ЗАЩИТНОЕ ПОКРЫТИЕ

Изобретение относится к области защиты металлов от коррозии, в частности к области защиты низколегированных и низкоуглеродистых сталей от коррозии в минерализованных водных средах, содержащих растворенный кислород и углекислый газ. Защитное покрытие включает наноструктурированный защитный слой ингибитора коррозии N-гетероциклической алкилфосфоновой кислоты и второй наружный слой, состоящий из эпоксидного полимера, при этом второй наружный слой получен из смеси состава, мас.%: мономер эпоксидной смолы Э-40 68,0-72,0; толуол 18,0-20,0; дибутилфталат (ДБФ) 2,0-4,0; упомянутый ингибитор коррозии 2,0-4,0; полиэтиленполиамин (ПЭПА) 4,0-6,0. Технический результат: повышение эффективности защиты металлов от всех видов коррозии, повышение долговечности и прочности сцепления. 1 з.п. ф-лы, 1 табл.

ИНГИБИТОР КОРРОЗИИ ЧЕРНЫХ МЕТАЛЛОВ В КИСЛЫХ СРЕДАХ

Ингибитор предназначен для использования на объектах добычи нефти и газа, преимущественно для защиты скважин, сборных нефте-газо- и газоконденсатных систем, промысловых установок. Ингибитор в качестве доступного сырья содержит продукт конденсации промышленно выпускаемых моноэтаноламина и каменноугольного фенола, а в качестве растворителя одноатомные изоспирты С3-С5, в частности, сивушное масло. при реакции конденсации получается третичный амин который обладает высоким защитным действием от общей коррозии и наводороживания металла. Технический результат: повышение эффективности защиты металла в высокоминерализованных слабокислых средах при минимальной концентрации ингибитора; улучшение эффекта последействия; использование более доступного и дешевого сырья. 2 з.п.ф-лы, 4 табл.

ВОДОРАСТВОРИМЫЙ ИНГИБИТОР КОРРОЗИИ ДЛЯ ЗАЩИТЫ ЭКСПЛУАТАЦИОННЫХ ТРУБ И ТРУБОПРОВОДОВ ДЛЯ ПРИРОДНОГО ГАЗА, А ТАКЖЕ СПОСОБ ЕГО ПОЛУЧЕНИЯ

Изобретение относится к способам получения водорастворимых ингибиторов коррозии для защиты эксплуатационных трубопроводов для природного газа. Получают компонент а) – смесь модифицированных производных имидазолина, проводят реакцию конденсации диэтилентриамина с жирными кислотами и алифатическими дикарбоновыми кислотами при температуре не менее 140° C. Получают смесь аминоамидов с кислотным числом <10 мг КОН/г. При температуре выше 180° C проводят реакцию конденсации. Получают смесь соединений с кислотным числом <1 мг КОН/г в количестве 0,1-50 мас.%. Нейтрализуют смесь при комнатной температуре в реакционной среде, содержащей компонент е) - алифатические спирты в количестве 15-99,7 мас.%, алифатической и/или ароматической монокарбоновой кислотой в количестве 0,05-25 мас.%. Получают конечный продукт и добавляют к компоненту а) в количестве 0,15-75 мас.% и компоненту е) следующие компоненты: b) - оксиэтиленированные жирные амины, с) - подщелачивающий агент и f) - противовспениватель. Изобретение ...

СПОСОБ ПОЛУЧЕНИЯ ИНГИБИТОРОВ КИСЛОТНОЙ КОРРОЗИИ

Изобретение относится к области защиты металлов от коррозии в кислых, высокоминерализованных водно-солевых средах. Способ включает взаимодействие полипропиленполиаминов с карбоновыми кислотами при мольном соотношении 1:1 и температуре 140-160°С в течение 6-8 ч, алкилирование полученных амидов кислот хлористым бензилом при температуре 60-80°С и мольном соотношении амида и хлористого бензила 1:1-4 в течение 4-8 ч и использование полученного продукта в качестве активной основы в составе ингибитора кислотной коррозии при следующем соотношении компонентов, мас.%: активная основа 14-25, соляная кислота 15-25, изопропиловый спирт 9-15, формалин 8-14, уротропин 1-2, диспергатор (ОП-7 или ОП-10) 1-2, вода - остальное. В качестве полипропиленполиаминов используют 2,5-диметил-1,4,7-триаминогептан, 2,5,8-триметил-1,4,7,10-тетраминодекан, 5-метил-1,4,7,10-тетраминодекан или техническую смесь полиэтиленполиаминов, а в качестве карбоновых кислот используют высшие α-разветвленные монокарбоновые кислоты ...

ИНГИБИТОР КОРРОЗИИ МЕТАЛЛОВ В СЕРНОЙ И СОЛЯНОЙ КИСЛОТАХ

Изобретение относится к защите металлов от коррозии в кислых средах с помощью ингибиторов и может быть применено в травильных растворах и кислотных очистках оборудования. Ингибитор содержит, мас.%: α-оксинафтальампициллин 10,7-8,6; 3-изопропилбензо-2,1,3-тиадиазинон-4-диоксид-2,2 21,2-17,1; 2-гептадецилимидазолинилацетат 31,5-22,5; уротропин 36,6-51,8. Технический результат - замедление коррозии стали, алюминия и индия, а также уменьшение наводороживания стали. 2 табл.

СПОСОБ ПОЛУЧЕНИЯ ИНГИБИТОРА СОЛЯНОКИСЛОЙ КОРРОЗИИ

Ингибитор солянокислой коррозии получают взаимодействием уротропина с полибензилхлоридом и/или алкилбензилхлоридом в присутствии воды. Предложенный способ позволяет получать эффективный ингибитор коррозии, не применяя дорогостоящий пиридин, и значительно упростить процесс. 2 табл.

Ингибитор кислотной коррозии (варианты)

Изобретение относится к средствам защиты металлов от коррозии, а именно к ингибиторам коррозии в кислой среде, которые могут быть использованы в нефтяной промышленности для кислотной обработки буровых скважин, а также для обработки призабойной зоны нефтяных и водонагнетательных скважин. Ингибитор содержит продукт взаимодействия полиэтиленполиамина с полибензилхлоридом, полученный при температуре 80-85°C в спиртовой среде в течение 3-5 часов при мольном соотношении полиэтиленполиамина с полибензилхлоридом, равном 1:(1,5-2) соответственно. Причем в качестве полибензилхлорида указанный продукт содержит полибензилхлорид со степенью полибензилирования, при которой показатель преломления полибензилхлорида находится в пределах 1,545-1,555. По второму варианту ингибитор дополнительно к продукту взаимодействия полиэтиленполиамина с полибензилхлоридом содержит пропаргиловый спирт или его производные и низкомолекулярный альдегид в виде формальдегида, или фурфурола, или ацетальдегида при массовом соотношении ...

КОМПОЗИЦИЯ ДЛЯ ЗАЩИТЫ МЕТАЛЛОВ ОТ КИСЛОТНОЙ КОРРОЗИИ

Композиция для защиты металлов от кислотной коррозии с использованием фракции диалкилпиридинов с температурой кипения ниже 250oC при давлении 760 мм рт. ст., полученной при ректификации высших пиридиновых оснований. Новая композиция позволяет комплексно использовать продукты, образующиеся при ректификации высших пиридиновых оснований, получая при этом высокоэффективные реагенты. 3 з.п. ф-лы, 2 табл.

СПОСОБ ПОЛУЧЕНИЯ ИНГИБИТОРА КОРРОЗИИ СТАЛЕЙ В СОЛЯНО-КИСЛЫХ СРЕДАХ И ИНГИБИТОР КОРРОЗИИ СТАЛЕЙ В СОЛЯНО-КИСЛЫХ СРЕДАХ

Изобретение направлено на расширение арсенала эффективных и технологичных средств для борьбы с коррозией скважинного оборудования при солянокислотных обработках призабойных зон скважин. Способ включает реакцию конденсации масла ПОД с формальдегидом при следующем соотношении компонентов, мас.%: масло ПОД 30,0-50,0, формальдегид остальное, аминирование полученного продукта реакции путем барботажа реакционной массы газообразным аммиаком до достижения аминного числа не менее 40 мг КОН/г и смешивание полученного аминированного продукта с органическим растворителем, выбранным из ряда: метанол, этанол, изопропилен, ацетон, сивушные масла при следующем соотношении компонентов, мас.%: аминированный продукт реакции 50,0-95,0, органический растворитель остальное. Ингибитор включает, мас.%: аминированный продукт реакции конденсации масла ПОД с формальдегидом 50,0-95,0 и органический растворитель, выбранный из ряда: метанол, этанол, изопропилен, ацетон, сивушные масла остальное, и полученный способом ...

ИНГИБИТОР КОРРОЗИИ МЕТАЛЛОВ В СЕРНОЙ, СОЛЯНОЙ И СУЛЬФАМИНОВОЙ КИСЛОТАХ

Изобретение может быть применено для травления стали и титана в металлургии и машиностроении, а также при кислотных очистках оборудования в энергетике и других отраслях производства. Ингибитор коррозии металлов в соляной, серной и сульфаминовой кислотах содержит продукт конденсации амина с альдегидом - N-(3-метокси-4-оксибензилиден)-4-амино-5-бром-1-фенилпиридазон-6 14,0 - 19,0 мас.%, 2-нитро-2-метилпропандиол-1,3 18,7 - 23,8 мас.%, 4-метил-5-β -оксиэтил-N-(2-метил-4-амино-5-метилпиримидил)-тиазолий иодида гидроиодид 20,3 - 23,8 мас.% и уротропин 33,3 - 46,8 мас.%. Ингибитор повышает степень защиты от коррозии стали и титана и эффективность защиты стали от наводороживания. 2 табл.

ДИ(4-ДИМЕТИЛАМИНОФЕНИЛ)ДИТЕЛЛУРИД В КАЧЕСТВЕ ПРОМЕЖУТОЧНОГО ПРОДУКТА В СИНТЕЗЕ ЕГО ДИЙОДМЕТИЛАТА, ЯВЛЯЮЩЕГОСЯ ИНГИБИТОРОМ КИСЛОТНОЙ КОРРОЗИИ СТАЛИ

Использование: в качестве полупродукта в синтезе его дийодметилата, проявляющего свойства ингибитора кислотной коррозии стали. Продукт: ди(4 - диметиламинофенил) дителлурид, 4-(CH3)2NC6 H4FeFeC6H4N(CH3)2-4 БФ C16H20N2Fe2 выход 60% , т. разл. 100 - 102°С. Продукт: дийодметилат ди(4 - диметиламинофенил) дителлурида БФ C18H26I2N2Fe2, выход 80% , т. разл. 100 - 102°С. Синтез 1: реагент 1: 4 - бром - N, N - диметиланилин. Реагент 2: магний и теллур. Условия реакции: в тетрагидрофуране на водяной бане. Синтез 2. Реагент 1: (4 - диметиламинофенил) дителлурид. Реагент 2: йодистый метил. Условия реакции: в ацетонитриле, 0,5 ч при комнатной температуре и 0,5 ч на водяной бане. 1 табл.

ИНГИБИТОР КИСЛОТНОЙ КОРРОЗИИ СТАЛИ

Изобретение относится к области защиты металлов от кислотной коррозии и защиты воздуха от кислотных испарений и может быть использовано при травлении изделий из углеродистых марок стали в растворах минеральных кислот. Ингибитор кислотной коррозии стали содержит этоксилированный продукт конденсации алкилфенолов, полиалкиленполиаминов и формальдегида при следующем соотношении компонентов, мас. %: алкилфенолы 16-22; полиалкиленполиамины 12-20; формальдегид 2-3; окись этилена 55-70. Ингибитор кислотной коррозии стали позволяет повысить эффективность защиты стали от коррозии и увеличить период и степень защиты воздуха от кислотных испарений при травлении стали в растворах минеральных кислот. 4 табл.

ПАССИВИРУЮЩИЙ РАСТВОР ДЛЯ ОБРАБОТКИ СОСУДОВ И АППАРАТОВ, КОНТАКТИРУЮЩИХ С ПЕРЕКИСЬЮ ВОДОРОДА

Изобретение относится к составу растворов, предназначенных для обработки внутренней поверхности емкостей, трубопроводов и других устройств, контактирующих с перекисью водорода различной концентрации, и может найти применение в производстве и хранении перекиси водорода в различных отраслях промышленности. Сущность изобретения: раствор содержит в мас.%: серную кислоту 3,15; нитрит натрия 1,5 - 7,5; воду - остальное. Указанный раствор используется после щелочной обработки изделия. Преимущества данного изобретения - повышение эффективности за счет снижения скорости разложения перекиси водорода и скорости коррозии металлов на основе алюминия и его сплавов, а также нержавеющих сталей. 1 табл.

СПОСОБ ПОЛУЧЕНИЯ ИНГИБИТОРА КИСЛОТНОЙ КОРРОЗИИ

Изобретение относится к области защиты металлов от коррозии посредством введения ингибиторов в агрессивную среду, в частности к способам получения ингибиторов кислотной коррозии стали, которые могут быть использованы в нефтяной, машиностроительной, энергетической, химической и других отраслях промышленности для защиты стального оборудования, эксплуатируемого в кислотных средах, а также в композиционных кислотных смесях. Получают ингибитор кислотной коррозии смешением компонентов, включающих кубовый остаток производства сантохина - 8,0 - 40,0 мас.%, соляную кислоту - остальное. В преимущественных вариантах получения ингибитора в него вводят формальдегидсодержащее соединение при соотношении ингибитора и формальдегидсодержащего соединения 1 : (0,001 - 0,3) соответственно; полученные ингибиторы выдерживают до расслоения и разделяют на верхнюю и нижнюю фазы; в верхнюю и нижнюю фазы ингибитора без содержания формальдегидсодержащего соединения вводят формальдегидсодержащее соединение при соотношении ...

ИНГИБИТОР КОРРОЗИИ В СОЛЯНОЙ КИСЛОТЕ

Изобретение относится к производству ингибированной соляной кислоты, применяемой в нефтедобыче. Ингибитор коррозии в соляной кислоте представляет собой смесь солянокислых аминопарафинов, получаемую аминированием хлорпарафинов C10-C26 с содержанием органического хлора в пределах 15 - 46 мас.% при температуре 120 - 160oC этилендиамином в эквимолярном соотношении органического хлора и диамина, до содержания остаточного органического хлора не более 3,0 мас. %. Применение ингибитора коррозии позволяет повысить эффективность предотвращения коррозии металлов в соляной кислоте. 3 табл.

ИНГИБИТОР КОРРОЗИИ УГЛЕРОДИСТОЙ СТАЛИ В КИСЛОРОДСОДЕРЖАЩИХ ВОДНЫХ РАСТВОРАХ

Изобретение относится к области защиты углеродистых сталей от коррозии в кислых и нейтральных кислородсодержащих водных растворах и может быть использовано в нефтехимии и теплотехнике. Ингибитор содержит, мас. ч. : морфолин 70,00 - 100,00; сульфат кобальта 0,75 - 1,50; соль, включающая анион металла переменной валентности, 4,00 - 6,4; антиоксидант 1,50 - 12,5, в качестве соли, включающей анион металла переменной валентности, используют молибдат натрия и/или хромат натрия, а в качестве антиоксиданта используют гидрохинон и/или п-бензохинон, ионол, оксим (диизопропоксифосфорил)карбонилхлорид, н-бутил (диизопропоксифосфорил)формамидоксим, 3-диизопропоксифосфорил-5-изопропоксикарбонилизоксазол; смесь 3-диизопропоксифосфорил-5-метоксикарбонилизоксазола и 3-диизопропоксифосфорил-4-метоксикарбонилизоксазола. 1 з. п. ф-лы, 2 табл.

СОСТАВ ДЛЯ ИНГИБИРОВАНИЯ СОЛЯНОЙ КИСЛОТЫ

Изобретение относится к производству ингибированной соляной кислоты, применяемой в нефтедобыче, в частности к составам для ингибирования абгазной соляной кислоты. Состав для ингибирования содержит, мас.%: продукт моно- и дихлорфенолов с формальдегидом и диметиламином 2-10 и продукт, полученный путем обработки формальдегидом маточного раствора производства хлорамина Б со стадии амидирования бензолсульфохлорида водным раствором аммиака 90-98. 1 табл.

СПОСОБ ПОЛУЧЕНИЯ ИНГИБИРОВАННОЙ СОЛЯНОЙ КИСЛОТЫ

Изобретение относится к производству ингибированной соляной кислоты, применяемой в нефтедобыче и используемой для обработки призабойных зон нефтяных и водонагнетательных скважин. Способ получения ингибированной соляной кислоты включает разбавление ее водой и ввод в нее первичных алифатических аминов формулы NH2R или смеси первичных и вторичных алифатических аминов формулы NHR2, где R - алкил с числом углеводородных атомов С8-С20 или изоалкиламины, содержащие разветвленную структуру аминов фракции С12-С18, и дополнительный ввод неионогенного поверхностно-активного вещества и формальдегидсодержащего соединения или перед вводом в водный раствор соляной кислоты азотсодержащего компонента его предварительно смешивают с порцией соляной кислоты в соотношении моль/моль и в полученную смесь вводят неионогенное поверхностно-активное вещество и формальдегидсодержащее соединение. Технический результат: получение эффективной ингибированной соляной кислоты за счет образования ингибитора кислотной коррозии ...

СПОСОБ ЗАЩИТЫ СТАЛИ ОТ КИСЛОТНОЙ КОРРОЗИИ

Способ защиты стали от кислотной коррозии путем введения ингибиторов аминного типа, отличающийся тем, что в качестве ингибиторов используют соединения, общей формулы: где R = 1,3 (CH2CH2)2Ad; -(CH2)6-; -(CH2)2-; \ ...

Способ получения ингибитора углекислотной и сероводородной коррозии

Изобретение относится к нефтедобывающей промышленности и может быть использовано для защиты нефтепромыслового оборудования от коррозии в минерализованных водных и водонефтяных средах, содержащих углекислоту и сероводород. Способ включает получение активной основы ингибитора при взаимодействии смеси алкиламинов, выбранных из группы, включающей кокоамин, талловый амин, этилендиамин, диэтилентриамин, аминоэтилэтаноламин, аминоэтилпиперазин и пиперазин, с триглицеридом или продуктом его переработки, выбранным из группы, включающей рапсовое масло, соевое масло, талловое масло, метиловый эфир жирной кислоты, этиловый эфир жирной кислоты, биодизель и жирную кислоту таллового масла, при этом реакцию проводят с использованием отгона образующейся воды и/или спирта при температуре 140-240°C и турбулентном перемешивании реакционной массы с выделением глицерина, воды и/или спирта, а к полученному водно-спиртовому раствору активной основы ингибитора добавляют четвертичное аммониевое соединение в виде ...

СПОСОБ ЗАЩИТЫ АЛЮМИНИЯ ОТ КОРРОЗИИ

Изобретение относится к области защиты металлов от коррозии и может быть использовано в травильных ваннах и при кислотных очистках оборудования. Способ защиты алюминия от коррозии в серной кислоте включает введение в агрессивную среду ингибитора, содержащего органические соединения, при этом в качестве ингибитора используют водный экстракт листьев чистотела большого, который вводят в агрессивную среду в количестве 0,6-1,0 г в пересчете на сухое вещество на литр агрессивной среды. Технический результат - повышение эффективности защиты от коррозии алюминия. 1 табл., 1 пр.

ИНГИБИТОР КОРРОЗИИ СТАЛИ В СОЛЯНОЙ КИСЛОТЕ

Применение 5,6-дигидро-2Н-пиранов общей формулы где R1 - атом водорода, алкил C1; R2 - атом водорода или алкил C1 - C3, в качестве ингибитора коррозии стали в соляной кислоте.

ИНГИБИТОР КИСЛОТНОЙ КОРРОЗИИ МЕТАЛЛОВ

Ингибитор кислотной коррозии металлов, содержащий сульфоксиды, отличающийся тем, что, с целью повышения степени защиты, он дополнительно содержит полиоксиэтиленовые эфиры алкилфенолов (ОП-7 или ОП-10), алкилароматические углеводороды, а в качестве сульфоксидов - нефтяные сульфоксиды при следующем соотношении компонентов, мас.%: Нефтяные сульфоксиды - 5 - 50 Полиоксиэтиленовые эфиры алкилфенолов (ОП-7 или ОП-10) - 2 - 20 Алкилароматические углеводороды - Остальное ...

ИНГИБИТОР КОРРОЗИИ ЧУГУНА В СРЕДАХ, СОДЕРЖАЩИХ СЕРНУЮ КИСЛОТУ И ХЛОР

Изобретение относится к защите металлов от коррозии с помощью химических реагентов-ингибиторов и может быть использовано для предотвращения коррозии чугуна в средах, содержащих серную кислоту и хлор, например, в хлорных компрессорах. Ингибитор включает дифениламин, сульфат железа и сульфонол при следующем содержании компонентов, мас.%: дифениламин 50-98; сульфат железа 1-25; сульфонол 1-25. Ингибитор снижает скорость коррозии чугуна СЧ20 в 7-14 раз. Степень защиты чугуна в динамическом режиме, моделирующем условия работы хлорного компрессора, при использовании ингибитора достигает 93%. 2 ил.

СПОСОБ ПОЛУЧЕНИЯ ИНГИБИРОВАННОЙ СОЛЯНОЙ КИСЛОТЫ

Изобретение относится к способам получения ингибированной соляной кислоты, применяемой в нефтедобыче, а именно к производству ингибированной соляной кислоты, используемой для обработки призабойных зон нефтяных и водонагнетательных скважин. Технический результат - получение более концентрированной ингибированной соляной кислоты с улучшенными ингибирующими свойствами. Способ получения ингибированной соляной кислоты включает ее разбавление до требуемой концентрации и введение расчетного количества ингибирующей смеси, включающей азотсодержащее соединение, представляющее собой первичные алифатические амины формулы NHR, где R-алкил с числом углеводородных атомов С-С, неионогенное поверхностно-активное вещество и формальдегидсодержащее соединение. Перед введением в соляную кислоту указанные компоненты смешивают между собой в следующем порядке: первоначально формальдегидсодержащее соединение смешивают с порцией соляной кислоты в массовом соотношении 15-20:1, затем последовательно вводят первичные ...

ИНГИБИТОР КОРРОЗИИ МЕТАЛЛОВ В СЕРНОЙ И СОЛЯНОЙ КИСЛОТАХ

Изобретение относится к области защиты металлов от кислотной коррозии и может быть использовано при травлении металлов и кислотных очистках оборудования. Цель изобретения состоит в увеличении степени защиты от коррозии стали, титана и хрома, а также в снижении наводороживания стали. Для достижения названной цели в серную и соляную кислоты вводят ингибитор коррозии, содержащий полиэтиленподиамин 42,85 -58,8 мас.% и продукт конденсации амина с альдегидом, отличающийся тем, что в качестве продукта конденсации в состав ингибитора входит фурфулиден-п-нитроанилин в количестве 11,7 - 14,3 мас.% и дополнительно 4-(бис-)-4-(диметиламино)-3-нитрофенил-(оксиметил)-антипирин в количестве 17,6 - 28,6 мас.%, а также 7-иод-8-оксихинолин-5-сульфокислоту в количестве 11,7 - 14,3 мас.%.

ИНГИБИТОР КОРРОЗИИ МЕТАЛЛОВ В СЕРНОЙ И СОЛЯНОЙ КИСЛОТАХ

Ингибитор коррозии металлов в серной и соляной кислотах, содержащий продукт конденсации амина с альдегидом, отличающийся тем, что он дополнительно содержит производное дипиридилия (1,1'-диметил-4,4'-дипиридилийдихлорид), производное пиримидина (2-этиламино-4-окси-5-бутил-6-метилпиридин) и уротропин, а в качестве продукта конденсации амина с альдегидом n-нитробензаль-о-аминофенол, при следующем соотношении компонентов, мас.%: ...

СПОСОБ ПОЛУЧЕНИЯ ИНГИБИРОВАННОЙ СОЛЯНОЙ КИСЛОТЫ

Способ получения ингибированной соляной кислоты путем разбавления абгазной соляной кислоты водой и последующего введения азотсодержащего ингибитора кислотной коррозии, отличающийся тем, что абгазную соляную кислоту дополнительно разбавляют раствором, полученным путем обработки формальдегидом маточного раствора производства хлорамина Б со стадии амидирования бензолсульфохлорида водным раствором аммиака.

ИНГИБИТОР КОРРОЗИИ МЕТАЛЛОВ В СОЛЯНОЙ И СЕРНОЙ КИСЛОТАХ

Изобретение относится к защите металлов от коррозии в соляной и серной кислотах, и может быть применено при травлении металлов в машиностроении и других отраслях производства. Повышение степени защиты от коррозии стали, титана, цинка и латуни и увеличение степени защиты стали от наводороживания достигается использованием в качестве продукта конденсации амина и альдегида N-(3-окси-4-метоксибензалиден)-N- (3'-нитро-6- пиридил)-сульфаниламида 15,1 - 24,0 мас.% и дополнительным содержанием в ингибиторе, мас.%: 6-бутил-N-метилхинолиний иодида 32,9 - 36,0; 5-окситетразола 12,0 - 16,4 и уротропина 28,0 - 35,6.

Ингибитор коррозии металлов в соляной и серной кислотах

ИНГИБИТОР КИСЛОТНОЙ КОРРОЗИИ СТАЛИ

Применение оксиэтилированного вторичного спирта общей формулы где R1 + R2-алкил с числом атомов углерода 13 - 15 или 14 - 16; n = 9 или 12, в качестве ингибитора кислотной коррозии стали.

2-АЛЛИЛОКСИМЕТИЛТЕТРАГИДРОФУРАН В КАЧЕСТВЕ ИНГИБИТОРА КОРРОЗИОННО-МЕХАНИЧЕСКОГО РАЗРУШЕНИЯ ТРУБНЫХ СТАЛЕЙ

Изобретение относится к защите металлоа от коррозии под напряжением (механохимической коррозии) ингибиторами и может быть использовано, в частности, для защиты трубных сталей от коррозионно-механического разрушения при транспортировании по трубопроводам увлажненного сероводородсодержащего природного газа и нефтяного газоконденсата. Ингибитор представляет собой 2-аллилоксиметилтетрагидрофуран, снижение температуры застывания ингибитора при высокой его эффективности достигается применением соединения формулы 2 табл.

ИНГИБИТОР КИСЛОТНОЙ КОРРОЗИИ (ВАРИАНТЫ)

... 1. Ингибитор кислотной коррозии на основе органических азотсодержащих соединений, отличающийся тем, что в качестве органических азотсодержащих соединений он содержит кубовый остаток производства сантохина и дополнительно - ароматический и гидрофильный органический растворители при следующем соотношении компонентов, мас.%: Кубовый остаток производства сантохина - 3,5 - 54,0 Ароматический растворитель - 3,5 - 54,0 Гидрофильный органический растворитель - Остальное 2. Ингибитор кислотной коррозии на основе органических азотсодержащих соединений, отличающийся тем, что в качестве органических азотсодержащих соединений он содержит кубовый остаток производства сантохина и дополнительно "возвратный спирт" производства кремнийорганических смол при следующем соотношении компонентов, мас.%: Кубовый остаток производства сантохина - 3,5 - 54,0 "Возвратный спирт" производства кремнийорганических смол - Остальноеи ...

ИНГИБИТОР КОРРОЗИИ МЕТАЛЛОВ В СЕРНОЙ, СОЛЯНОЙ И СУЛЬФАМИНОВОЙ КИСЛОТАХ

Изобретение может быть применено для травления стали и титана в металлургии и машиностроении, а также при кислотных отчистках оборудования в энергетике и других отраслях производства, к Ингибитор, в состав которого входят продукт конденсации альдегида с амином (14,0 - 19,0 мас.%) и уротропин (33,3 - 45,8 мас.%), отличается тем,что в качестве продукта конденсации он содержит N-(3 метокси-4-оксибензилиден)-4-амино-5-бром-1-фенилпиридазон-6, а также дополнительно содержит 2-нитронропандиол- 1,3 (18,7-23,8 мас. %) и 4-метил-5-β -оксиэтил-N-(2-метил-4-амино-5-метилвиримидил)- тиазолий иодида гидроиодид (20,3 - 23,8 мас.%). Ингибитор повышает степень защиты от коррозии стали и титана и эффективность защиты стали от наводороживания.

Ингибитор кислотной коррозии стали

Изобретение относится к технике защиты черных металлов от коррозии с помощью органических ингибиторов и может быть использовано для защиты различного оборудования, изготовленного из стали, перспективно для применения в травильных растворах или в буровых растворах при реализации соляно-кислотных технологий в процессе нефтедобычи, предотвращения или замедления атмосферной коррозии конструкционных материалов на основе стали за счет создания на их поверхности наноразмерных пассивирующих пленок или в составе различных защитных лаков и грунтовок. Предложено применение серосодержащих производных 1,3,5-триазин-2-амина общей формулы в которой R представляет собой водород или CnH2n-1, где n=1-10, в качестве ингибитора кислотной коррозии стали. Изобретение позволяет расширить арсенал эффективных ингибиторов коррозии металлов. Технический результат состоит в высокой степени защиты стали - 68,1-99,6% в соответствии с результатами потенциометрических методов для концентрации ингибитора 2 г/л в условиях ...

Способ получения ингибитора кислотной коррозии стали

Изобретение относится к аминоэфирам, в частности к получению иж ибитора кислотной коррозии стали. Цепь повышение защитного действия ингибитора Получение ведут реакцией глицидилового эфира с аммиаком или аминоспиртом. По ингибирую-0 щим свойствам новые ингибиторы превосходят известный инг ибигор (ПБ-5, защита 89%). 2 табл.

Раствор для химической очистки теплообменной аппаратуры

Способ защиты черных металлов

Способ комбинированной стабилизационной обработки воды систем оборотного водоснабжения промышленных предприятий

Способ химического травления молибдена в растворе азотной кислоты

Способ ингибирования коррозии стали марки-3

Способ понижения коррозионной активности концентрированной азотной кислоты

Способ консервации поршневого двигателя внутреннего сгорания

Спосо защиты металлов от коррозии

Способ защиты стали от сероводородной коррозии

Способ предотвращения коррозии стальных поверхностей

Способ очистки латунных поверхностей от карбонатных отложений

ИHГИБИTOP KИCЛOTHOЙ KOPPOЗИИ

Способ консервации поршневого двигателя внутреннего сгорания

Изобретение относится к области двигателестроения и может быть использовано при эксплуатации и хранении комбайновьк, аьтомобильных,тракторных , судовых и других поршневых двигателей внутреннего сгорания,Целью изобретения является повышение эффективности консервации. При осуществлении способа двигатель прогревают, выводят на 2-3 с на режим максимальной частоты. Затем останавливают и прокручивают его в течение 10-15 с при температуре масла в картере в пределах 15-30°С, а предпочтительно 20 - 25 С. Указанный интервал времени определен экспериментально по изменению относительной толщины масляной пленки на зеркале гильзы цилиндра двигателя. Температурный интервал для масла выбран из условия обеспечения необходимой и достаточной толщины защитной масляной пленки. 4 ил. с (Л (Х ...

Ингибитор наводороживания и общей коррозии стали в средах, содержащих сероводород

Изобретение относится к защите металлов от наводороживания и коррозии ингибиторами и может быть использовано для защиты трубной стали в средах с высоким содержанием сероводорода при добыче и транспортировке нефти и газа. Сущность изобретения: ингибитор содержит, мас.%: 3.5-диал- кил-Ц2.4-триазол 62 - 68; 2.5-диалкил-1Д4-ок- садиазол 7-13; н-алкиламиды карбоновой кислоты 22-28. 2 табл.

Состав для предотвращения солеотложений

СОСТАВ ДЛЯ ПРЕДОТБРАВ1ЕНИЯ СОЛЕОТЛОЖЕНИЯ, включающий Триполифосфат натрия и добавки, отличающийся тем, что, с целью повьппешш эффективности предотвращения солеотложения, усиления антикоррозионных свойств, возможности использования в присутствии opгaIiических добавок, расширения пределов использования по сапеобразуюпц гм реагентам , в качестве добавок вводят пирофосфорную кислоту и ацетат щелочного металла при следующих соотношени-ях ингредиентов, мас.%: Триполифосфат натрия 45-70 Пирофосфорная кислота28-54 Ацетат щелочного S металла1,0-2,0 ...

Ингибитор кислотной коррозии

Способ защиты углеродистой стали от коррозии

Способ удаления кислых газов из газового потока

Quaternäre Quinoliniumverbindungen.

VERBESSERTE ELEKTRONENTRANSFERMITTEL IN ZUSAMMENSETZUNGEN FÜR DIE SÄUREBEHANDLUNG VON BOHRLÖCHERN SOWIE ZUGEHÖRIGE VERFAHREN

Zwitterionic water-soluble substituted imine corrosion inhibitors

Environmentally friendly corrosion inhibitors for high temperature applications

Methods of inhibiting corrosion of metal surfaces by aqueous acids are described. The methods include combining an effective amount of a corrosion inhibitor composition with an aqueous acid solution to form an inhibited acid solution and contacting a metal surface with the inhibited acid solution. The corrosion inhibitor composition includes an aromatic ketone or a salt thereof.

Corrosion inhibiting compositions and process

... 1,142,429. Cleaning and preventing corrosion Of metals. ARMOUR & CO. Oct.9, 1967 [Oct.14, 1966], No.46077/67. Heading C7E. Corrosion of metals by an acid solution which may be a cleaning solution is inhibited by adding an N-aliphatic hexyhydropyrimidine-2-thione having the formula: - where R is an aliphatic hydrocarbon radical having from 6 to 22 carbon atoms. The inhibitor is added in an amount from 10 to 50,000 parts per million of the acid solution. The following acid solutions are referred to: - sulphuric, hydrochloric, citric, phosphoric, and sulphamic. A quaternary ammonium compound may also be added.

A METHOD OF INHIBITING CORROSION OF FERROUS ALLOYS

... 1,208,896. Inhibiting corrosion. STANDARD OIL CO. Dec.14, 1967 [Dec.14, 1966], No.56899/67. Heading C7E. To inhibit corrosion of ferrous alloys, such as stainless steel, by halogen-containing impurities in benzoic acid, water is added to the acid. Preferably the water added is from 0À2 to 5% by weight of the acid. Distilled water, deionized water, steam and ice may be used. Prevention of corrosion by isomers of bromobenzoic acid and by alpha-bromo-toluene, both produced during the production of benzoic acid by bromine-catalyzed air-oxidation of toluene, are specifically referred to and reductions in corrosion by impure liquid benzoic acid at up to 326‹F. are described.

Inhibitor compositions

Compounds of the general formula where R is an abietyl, hydroabietyl or dehydroabietyl radical, X is the radical CH2R1, and Y is a hydrogen atom or the radical CH2R1, and in which R1 is an a -ketonyl group, are made by reacting rosin amine with hydrochloric acid, formaldehyde and an a -ketone. The a -ketone may be acetone, acetophenone, 2,4-pentanedione, mesityl oxide, or diacetone alcohol. The compounds are mixed with propargyl alcohol to form corrosion-inhibiting compositions. Specification 734,665 is referred to.ALSO:Compositions comprising propargyl alcohol and a compound of p the general formula where R is an abietyl, hydroabietyl or dehydroabietyl, X is the radical CH2R1, and Y is a hydrogen atom or the radical CH2R1, and in which R1 is an a -ketonyl group, are corrosion inhibitors in the acid pickling of metals and in the acidizing of oil-wells. R1 is derived from ketones such as acetone, acetophennone, 2, 4-pentanedione, mesityl oxide, ...

Improvements in or relating to a process for the preparation of furfural

In the preparation of furfural by reacting vegetable material containing pentosans with aqueous hydrochloric acid, the reaction is carried out in the presence of a reducing carbohydrate in apparatus of which at least the reaction vessel is either made of pure, or substantially pure, copper, or has a coating of copper on the surface which contacts the reaction mixture. All parts of the apparatus contacted by the reaction mixture, e.g. heating coils and agitators, should also be made of, or coated with, copper. Acid of up to 20 per cent concentration is used, with glucose in amount 60-90 grams/litre acid. The glucose may be obtained by hydrolysis of higher carbohydrates in the vegetable material and/or supplied as such, and renders the copper resistant to acid attack.ALSO:In the preparation of furfural by reacting vegetable material containing pentosans with aqueous hydrochloric acid, the reaction is carried out in the presence of a reducing carbohydrate in apparatus of which at least the ...

A multi-branched mannich base corrosion inhibitor and preparation method thereof

Mannich-base inhibitor for decalcification, preparation method and application thereof

Process of protection of metals against electrochemical corrosion in acid medium.

MANNICH-BASE INHIBITOR FOR DECALCIFICATION, PREPARATION METHOD AND APPLICATION THEREOF

Mannich-base inhibitor for decalcification, preparation method and application thereof

A multi-branched mannich base corrosion inhibitor and preparation method thereof

A multi-branched mannich base corrosion inhibitor and preparation method thereof

Mannich-base inhibitor for decalcification, preparation method and application thereof

KORROSIONSINHIBITORPRAEPARAT

CORROSION INHIBITOR PREPARATION

PROCEDURE FOR PASSIVATING METAL SURFACES ATTACKED BY OPERATING CONDITIONS AND CORROSION PROMOTION END OF MEDIA

BATH, PROCEDURE AND CONCENTRATE FOR THE COATING OF ALUMINUM.

CORROSION INHIBITORS FUER ALUMINUM.

COMPOSITION AND PROCEDURE FOR SEALING PHOSPHATISATION METAL COMPONENTS.

MEANS TO THE CORROSION PREVENTING

Corrosion inhibitors for aluminum

HALOGEN ACID CORROSION INHIBITOR BASE

Improved electron transfer system for well acidizing compositions and methods

CORROSION INHIBITOR COMPOSITIONS COMPRISING REACTION PRODUCTS OF ALDEHYDES AND AMIDES AND RELATED METHODS

Abstract The invention relates to corrosion inhibitor compositions comprising products of a reaction between aldehydes and amides for use in subterranean applications and methods related thereto. In general, the methods for inhibiting corrosion comprise providing a corrosive environment and adding a composition comprising a corrosion inhibitor to the corrosive environment. The corrosion inhibitor comprises a product of a reaction between at least one aldehyde and at least one amide that is not formamide or a formamide derivative. 12/06/15,22806 abstract.doex,2 ...

METHODS AND ACIDIZING COMPOSITIONS FOR REDUCING METAL SURFACE CORROSION AND SULFIDE PRECIPITATION

Methods and acidizing compositions for reducing the corrosion of the metal surfaces of tubular goods and the like and reducing the precipitation of metal sulfide from the acidizing compositions are provided. The methods basically comprise the steps of combining an aldol-amine adduct with an aqueous acid solution to preferentially react with sulfide ions subsequently dissolved by the aqueous acid solution and thereby prevent subsequently dissolved metal ions from reacting therewith and precipitating, and then introducing the aqueous acid solution containing the aldol-amine adduct into a well or other location to be acidized.

WELL TREATMENT FLUIDS COMPRISING MIXED ALDEHYDES

An acidic fluid that is useful in stimulation and workover operations, and in particular, in matrix acidizing treatments, comprises an acid, such as hydrochloric acid; water; an aliphatic aldehyde having 1-10 carbon atoms; and an aromatic aldehyde having 7-20 carbon atoms. The aliphatic aldehyde preferably has 1-6 carbon atoms. Glyoxylic acid and glyoxal are especially preferred aliphatic aldehydes. The aromatic aldehyde preferably has 7-10 carbon atoms. Cinnamaldehyde is especially preferred.

METHODS OF INHIBITING CORROSION USING ISOMERS OF CHLORO-METHYLBENZOTRIAZOLE

The use of halo-benzotriazoles as corrosion inhibitors in aqueous systems is disclosed. Specific isomers of chloro-methylbenzotriazole were found to be more effective corrosion inhibitors than tolyltriazole in the presence of chlorine.

INHIBITING ALUMINUM CORROSION WITH MERCAPTO-SUBSTITUTED SILANES

Corrosion of metal surfaces, particularly aluminium or aluminium alloy surfaces, is inhibited by contacting the metal surfaces with a solution comprising a mercapto-substituted silane and then preferably baking the metal to cure the silane coating. Multifunctional organo-mercapto-substitututed silanes are preferred in the practice of the process. Preferably, the treatment solution is an aqueous mixture of the mercapto-substituted silane and selected solvents.

CORROSION INHIBITOR COMPOSITION

THALLIUM-CONTAINING COMPOSITION FOR STRIPPING PALLADIUM

METHODS OF INHIBITING CORROSION USING ISOMERS OF CHLORO-METHYLBENZOTRIAZOLE

The use of halo-benzotriazoles as corrosion inhibitors in aqueous systems is disclosed. Specific isomers of chloro-methylbenzotriazole were found to be more effective corrosion inhibitors than tolyltriazole in the presence of chlorine.

NOVEL CORROSION INHIBITION PACKAGE

An inhibition corrosion package for use with an acidic composition, where the package comprises a terpene component; a propargyl alcohol or derivative thereof; at least one amphoteric surfactant; and a solvent. Also disclosed are acidic compositions combining the corrosion inhibition package according to a preferred embodiment of the present invention for use in various industrial operations including but not limited to oil and gas operations. Also disclosed are methods of use of such compositions.

NOVEL DOWNHOLE METHODS

A method for the fracking or stimulation of a hydrocarbon-bearing formation, said method comprising the steps of: - providing a wellbore in need of stimulation; - inserting a plug in the wellbore at a predetermined location; - inserting a perforating tool and a spearhead or breakdown acid into the wellbore; - positioning the tool at said predetermined location; - perforating the wellbore with the tool thereby creating a perforated area; - allowing the spearhead acid to come into contact with the perforated area for a predetermined period of time sufficient to prepare the formation for fracking or stimulation; - removing the tool form the wellbore; and - initiating the fracking of the perforated area using a fracking fluid. Also disclosed is a corrosion inhibiting composition for us with the acid composition.

NOVEL DOWNHOLE METHODS

A method for the fracking or stimulation of a hydrocarbon-bearing formation, said method comprising the steps of: - providing a wellbore in need of stimulation; - inserting a plug in the wellbore at a predetermined location; - inserting a perforating tool and a spearhead or breakdown acid into the wellbore; - positioning the tool at said predetermined location; - perforating the wellbore with the tool thereby creating a perforated area; - allowing the spearhead acid to come into contact with the perforated area for a predetermined period of time sufficient to prepare the formation for fracking or stimulation; - removing the tool form the wellbore; and - initiating the fracking of the perforated area using a fracking fluid. Also disclosed is a corrosion inhibiting composition for us with the acid composition.

NOVEL CORROSION INHIBITION PACKAGE

An inhibition corrosion package for use with an acidic composition, where the package comprises a dialdehyde-containing hydrocarbon component; at least one surfactant; optionally, a propargyl alcohol or derivative thereof; and a solvent. Also disclosed are acidic compositions combining the corrosion inhibition package according to a preferred embodiment of the present invention for use in various industrial operations including but not limited to oil and gas operations. Also disclosed are methods of use of such compositions.

NOVEL CORROSION INHIBITION PACKAGE

A corrosion inhibition package for use with an aqueous acid composition, said package comprising: a terpene; a cinnamaldehyde or a derivative thereof; at least one amphoteric surfactant; and a solvent. Also disclosed are compositions comprising said corrosion inhibitor package. Preferably, the corrosion inhibition package meets the environmental requirements for classification as yellow according to the Norwegian North Sea offshore drilling regulatory requirements.

CORROSION INHIBITOR FORMULATIONS WITH IMPROVED PERFORMANCE, LOWER TOXICITY AND REDUCED MANUFACTURING HAZARDS

... ²²²Aqueous corrosion inhibitor compositions, preferably storage-stable, useful in ²acidic cleaning solutions for cleaning the surfaces of metal, comprising ²reaction products of at least one rosin amine component, at least one non-²flammable liquid ketone component, at least one carboxylic acid component, at ²least one paraformaldehyde component and water; aqueous acidic cleaners ²prepared therefrom; and methods of their use. The inventive corrosion ²inhibitor compositions are made by a simple process which reduces the presence ²of toxic and/or flammable raw materials, co-products, residual reactants and ²chloride ion while providing acid inhibition in aqueous acidic cleaners.² ...

CORROSION INHIBITOR INTENSIFIER COMPOSITIONS AND ASSOCIATED METHODS

Many methods are presented herein including a method comprising: providing a metal surface; and contacting the metal surface with a treatment fluid comprising an aqueous base fluid, an acid, a corrosion inhibitor, and a corrosion inhibitor intensifier composition comprising a corrosion inhibitor compound that corresponds to a formula: PR1R2R3, wherein R1, R2, and R3 are chosen from the group consisting of C1-C20 alkyl, cycloalkyl, oxyalkyl, and aryl groups, and R1, R2, and R3 may or may not be equal. Corrosion inhibitor intensifier compositions also are provided.

SEPARATORY AND EMULSION BREAKING PROCESSES

The invention pertains to the use of a class of acetylenic surfactants to resolve or break water and oil emulsions. The surfactants are of particular advantage in resolving crude oil emulsions of the type encountered in desalter and similar apparatus designed to extract brines from the crude as they partition to the aqueous phase in the desalter. Also, the surfactants may be used to separate oil from oil sands and similar oil/solids matrices.

AQUEOUS ACID CLEANING, CORROSION AND STAIN INHIBITING COMPOSITIONS IN THE VAPOR PHASE COMPRISING A BLEND OF NITRIC AND SULFURIC ACID

The present invention relates to sulfuric/ nitric blended acid cleaners which employ the use of ethoxylated amines and/or ethoxylated alcohols as a corrosion and stain inhibitor in the vapor phase for cleaning metal and other surfaces, particularly stainless steel. Method of use and manufacturing of the same are also disclosed.

CORROSION INHIBITING CLEANER FOR STEEL AND FERROUS METALS

IODINE-CONTAINING CORROSION INHIBITOR FOR OIL FIELD ACIDIZING OPERATIONS

Elemental iodine is used to improve the performance of conventional corrosional inhibitors in oil field acidizing operations. The iodine, because of its solubility, may be used in a formulation which includes a corrosion inhibitor and surfactants dissolved in a suitable organic solvent.

Corrosion inhibitors for oil and gas applications

A corrosion inhibitor composition and method of inhibiting corrosion on a surface in an oil or gas application is disclosed and claimed. The corrosion inhibitor includes at least one fatty acid; at least one alkanolamine; at least one alkylamine; and at least one organic sulfonic acid. The method of inhibiting corrosion includes on a surface in an oil or gas application comprises contacting an effective dosage of the corrosion inhibitor with the surface.

Compositions and Methods for Protecting Metal Surfaces from Corrosion

Guard bed compositions for protecting metal surfaces in a wellbore from corrosion may comprise a variety of constituent components. Exemplary guard bed compositions may include: one or more surfactants selected from the group comprising amine surfactants; one or more co-surfactants selected from the group comprising C3 to C15 alcohols; and one or more non-surfactant amines. Other exemplary guard bed compositions may comprise: a hydrocarbon fluid and an overbased detergent. Still other exemplary guard bed compositions may comprise: a hydrocarbon fluid; one or more surfactants; one or more co-surfactants; and one or more non-surfactant amines. The one or more surfactants may be selected from the group comprising alkyl alkoxylated surfactants. Still further, exemplary guard bed compositions may comprise: a hydrocarbon fluid and one or more associating surface active polymers selected from the group comprising amphiphilic polymers. 1. A guard bed composition for protecting a metal surface in a wellbore from corrosion , the composition comprising:a hydrocarbon fluid; andone or more associating surface active polymers selected from the group comprising amphiphilic polymers.2. The guard bed composition of wherein the polymer comprises between about 0.1 wt % and about 10 wt % of the guard bed composition.3. The guard bed composition of wherein the hydrocarbon fluid comprises hydrocarbons selected from the group of normal and branched alkane hydrocarbons having C8 to C20 carbons.4. The guard bed composition of wherein the hydrocarbon fluid comprises cyclic hydrocarbons.5. The guard bed composition of wherein the hydrocarbon fluid comprises synthetic oils.6. The guard bed composition of wherein the hydrocarbon fluid comprises an ultra low aromatic fluid.7. The guard bed composition of wherein the hydrocarbon fluid comprises less than about 1 wt % aromatic compounds.8. The guard bed composition of wherein the associating surface active polymers comprise a hydrocarbon backbone ...

Compositions and Methods for Protecting Metal Surfaces from Corrosion

Guard bed compositions for protecting metal surfaces in a wellbore from corrosion may comprise a variety of constituent components. Exemplary guard bed compositions may include: one or more surfactants selected from the group comprising amine surfactants; one or more co-surfactants selected from the group comprising C3 to C15 alcohols; and one or more non-surfactant amines. Other exemplary guard bed compositions may comprise: a hydrocarbon fluid and an overbased detergent. Still other exemplary guard bed compositions may comprise: a hydrocarbon fluid; one or more surfactants; one or more co-surfactants; and one or more non-surfactant amines. The one or more surfactants may be selected from the group comprising alkyl alkoxylated surfactants. Still further, exemplary guard bed compositions may comprise: a hydrocarbon fluid and one or more associating surface active polymers selected from the group comprising amphiphilic polymers.

Compositions and Methods for Protecting Metal Surfaces from Corrosion

Guard bed compositions for protecting metal surfaces in a wellbore from corrosion may comprise a variety of constituent components. Exemplary guard bed compositions may include: one or more surfactants selected from the group comprising amine surfactants; one or more co-surfactants selected from the group comprising C3 to C15 alcohols; and one or more non-surfactant amines. Other exemplary guard bed compositions may comprise: a hydrocarbon fluid and an overbased detergent. Still other exemplary guard bed compositions may comprise: a hydrocarbon fluid; one or more surfactants; one or more co-surfactants; and one or more non-surfactant amines. The one or more surfactants may be selected from the group comprising alkyl alkoxylated surfactants. Still further, exemplary guard bed compositions may comprise: a hydrocarbon fluid and one or more associating surface active polymers selected from the group comprising amphiphilic polymers. 1. A guard bed composition for protecting a metal surface in a wellbore from corrosion , the composition comprising:a hydrocarbon fluid; andan overbased detergent; wherein the overbased detergent is selected to form a colloidal coating on the metal surface upon contact with hydrogen sulfide and water.2. The guard bed composition of wherein the overbased detergent comprises greater than about 20 wt % based on the weight of the guard bed composition.3. The guard bed composition of wherein the overbased detergent comprises between about 20 wt % and about 99 wt %.4. The guard bed composition of further comprising at least one co-surfactant selected from the group comprising C3 to C15 alcohols claim 1 , wherein the alcohols are selected from the group comprising branched alcohols claim 1 , linear alcohols claim 1 , and mixtures thereof.5. The guard bed composition of wherein the hydrocarbon fluid comprises hydrocarbons selected from the group comprising normal and branched alkane hydrocarbons having C8 to C20 carbons claim 1 , cyclic alkanes claim ...

Composition and Methods for Protecting Metal Surfaces from Corrosion

Guard bed compositions for protecting metal surfaces in a wellbore from corrosion may comprise a variety of constituent components. Exemplary guard bed compositions may include: one or more surfactants selected from the group comprising amine surfactants; one or more co-surfactants selected from the group comprising C3 to C15 alcohols; and one or more non-surfactant amines. Other exemplary guard bed compositions may comprise: a hydrocarbon fluid and an overbased detergent. Still other exemplary guard bed compositions may comprise: a hydrocarbon fluid; one or more surfactants; one or more co-surfactants; and one or more non-surfactant amines. The one or more surfactants may be selected from the group comprising alkyl alkoxylated surfactants. Still further, exemplary guard bed compositions may comprise: a hydrocarbon fluid and one or more associating surface active polymers selected from the group comprising amphiphilic polymers. 1. A guard bed composition for protecting a metal surface in a wellbore from corrosion , the composition comprising:a hydrocarbon fluid;one or more surfactants selected from the group comprising alkyl alkoxylated surfactants;one or more co-surfactants selected from the group comprising C3 to C15 alcohols; andone or more non-surfactant amines.2. The guard bed composition of wherein the hydrocarbon fluid comprises between about 0 wt % and about 90 wt % based on the weight of the guard bed composition.3. The guard bed composition of wherein the hydrocarbon fluid comprises hydrocarbons selected from the group of normal and branched alkane hydrocarbons having C8 to C20 carbons.4. The guard bed composition of wherein the hydrocarbon fluid comprises cyclic hydrocarbons.5. The guard bed composition of wherein the hydrocarbon fluid comprises an ultra low aromatic fluid.6. The guard bed composition of wherein the hydrocarbon fluid comprises less than about 1 wt % aromatic compounds.7. The guard bed composition of wherein the alkyl alkoxylated ...

Nitrogen-containing compounds as corrosion inhibitors

The present invention relates to nitrogen-containing hydroxyethyl substituted compounds to be used as corrosion inhibitors for metal surfaces, for example in aqueous systems and in particular in oil-field applications, e.g. in oil or gas wells, and which could be used under sweet-well conditions as well as under sour-well conditions. It may also be used in oil-field acidizing and fracture-acidizing well stimulation treatment. The compounds belong to the group of partly ethoxylated fatty alkylamines, partly ethoxylated alkyletheramines and partly or fully hydroxyethyl substituted alkylamidopropylamines. The corrosion inhibitors have the formula (I) where R is a hydrocarbyl or an acyl group having 14-24 carbon atoms, or the group R′OCHCHCHwhere R′ is a hydrocarbyl group with 14-24 carbon atoms; X is hydrogen, CHOH or the group Y is hydrogen or CHOH and n is 0-3, with the proviso that at least one of the symbols X and Y is CHOH, at most one of the symbols X is n is at least one when R is an acyl group, and when R is a hydrocarbyl group or the group R′OCHCHCHat least one of the symbols X and Y is hydrogen. 113.-. (canceled)15. The corrosion inhibiting composition of claim 14 , where R is a hydrocarbyl group having 16-22 carbon atoms.16. The corrosion inhibiting composition of claim 14 , where n is 0-2.17. The corrosion inhibiting composition of claim 14 , where n is 1-2.18. The corrosion inhibiting composition of claim 14 , where R is the group R′OCHCHCH claim 14 , where R′ has the same meaning as in .19. The corrosion inhibiting composition of wherein said aqueous environment is acidic.20. The corrosion inhibiting composition of wherein said oilfield application is under sweet-well conditions.21. The corrosion inhibiting composition of wherein said oilfield application is under sour-well conditions.22. The corrosion inhibiting composition of claim 14 , further comprising a water-miscible solvent.23. The corrosion inhibitor of which comprises a mixture of ethoxylated ...

CORROSION INHIBITORS FOR OIL AND GAS APPLICATIONS

A corrosion inhibitor composition and method of inhibiting corrosion on a surface in an oil or gas application is disclosed and claimed. The corrosion inhibitor includes at least one fatty acid; at least one alkanolamine; at least one alkylamine; and at least one organic sulfonic acid. The method of inhibiting corrosion includes on a surface in an oil or gas application comprises contacting an effective dosage of the corrosion inhibitor with the surface. 3. The corrosion inhibitor composition of claim 2 , comprising (1) claim 2 , (2) claim 2 , (3) claim 2 , (4) claim 2 , (5) claim 2 , and (6).4. The corrosion inhibitor of claim 1 , further comprising at least one dispersant.5. The corrosion inhibitor of claim 4 , wherein the at least one dispersant comprises at least one oxyalkylate polymer.6. The corrosion inhibitor of claim 1 , further comprising at least one solvent.7. The corrosion inhibitor of claim 6 , wherein the at least one solvent comprises at least one selected from: methanol claim 6 , ethanol claim 6 , propanol claim 6 , isopropanol claim 6 , butanol claim 6 , isobutanol claim 6 , aromatic hydrocarbons claim 6 , monoethyleneglycol claim 6 , ethyleneglycolmonobutylether claim 6 , and combinations thereof.8. The corrosion inhibitor composition of claim 1 , comprising about 10 wt % to about 100 wt % of corrosion inhibitor actives.9. A method of inhibiting corrosion on a surface in an oil or gas application claim 1 , the method comprising contacting an effective dosage of the corrosion inhibitor of with the surface.10. The method of claim 9 , wherein the effective dosage range is between about 10 ppm to about 10 claim 9 ,000 ppm.11. The method of claim 9 , further comprising dosing the corrosion inhibitor into an annulus of a well; allowing the dosed corrosion inhibitor to travels into the well; and recovering the corrosion inhibitor with a produced fluid thereby avoiding entering a formation.12. The method of claim 9 , further comprising treating a ...

COMPOSITION AND METHOD FOR INHIBITING CORROSION OF METALS

A composition for inhibiting corrosion of a metal is provided. The corrosion inhibitor composition comprises 5-amino-2-mercaptobenzimidazole. The corrosion inhibitor composition outperforms many other sulfur-containing corrosion inhibitors in kettle testing. 1. A method of inhibiting corrosion of a metal , the method comprising contacting the metal with a corrosion inhibitor composition comprising an effective amount of 5-amino-2-mercaptobenzimidazole , wherein the metal comprises iron.2. (canceled)3. The method of claim 1 , wherein the corrosion inhibitor composition is contacted with the metal in an environment where the metal would otherwise be corrodible therein.4. The method of claim 3 , wherein the environment is brine claim 3 , a water-containing hydrocarbon claim 3 , a water-containing gas claim 3 , or a combination thereof.5. The method of claim 4 , wherein the corrosion inhibitor composition is introduced into the environment in an amount in the range from about 1 to about 1000 parts per million by volume.6. The method of claim 4 , wherein the corrosion inhibitor composition is introduced into the environment in an amount of about 1000 parts per million by volume or less.712.-. (canceled)13. A composition for inhibiting corrosion of a metal in an environment in which the metal would otherwise be corrodible claim 4 , the composition comprising 5-amino-2-mercaptobenzimidazole claim 4 , wherein the metal comprises iron.14. (canceled)15. The method of claim 1 , wherein the metal comprises an iron alloy.16. The method of claim 3 , wherein the environment comprises one or more of COand HS.17. The composition of claim 13 , wherein the metal comprises an iron alloy.18. The composition of claim 13 , wherein the environment comprises one or more of COand HS. Metals and metal alloys are subject to corrosion in certain oil and gas production environments. These metals and metal alloys may be exposed to a variety of acids, bases, acid gases such as COand HS, brines of ...

LOW DOSAGE CHEMICAL SUPPRESSION AGENTS FOR CARBON STEELS DEGRADATION

A composition for inhibiting corrosion of a metal is provided. The corrosion inhibitor composition comprises 5-amino-2-mercaptobenzimidazole. The corrosion inhibitor composition can also comprise a 2-mercaptobenzimidazole derivative selected from the group consisting of 2-mercapto-5-methylbenzimidazole, 5-Ethoxy-2-mercaptobenzimidazole, 5-(difluoromethoxy)-2-mercapto-1H-benzimidazole 1-Methyl-1H-benzimidazole-2-thiol and 2-mercapto-5-nitrobenzimidazole. The corrosion inhibitor composition outperforms many other sulfur-containing corrosion inhibitors in kettle testing. 1. A method of inhibiting corrosion of a metal , the method comprising contacting the metal with a corrosion inhibitor composition comprising an effective amount of a 2-mercaptobenzimidazole derivative selected from the group consisting of 2-mercapto-5-methylbenzimidazole , 2-mercapto-5-nitrobenzimidazole , 5-Ethoxy-2-mercaptobenzimidazole , 5-(difluoromethoxy)-2-mercapto-1H-benzimidazole , and 1-Methyl-1H-benzimidazole-2-thiol.2. The method of claim 1 , wherein the metal is one or more of carbon steel and stainless steel.3. The method of claim 1 , wherein the corrosion inhibitor composition is contacted with the metal in an environment where the metal would otherwise be corrodible therein.4. The method of claim 3 , wherein the environment is brine claim 3 , a water-containing hydrocarbon claim 3 , a water-containing gas claim 3 , or a combination thereof.5. The method of claim 4 , wherein the corrosion inhibitor composition is introduced into the environment in an amount in the range from about 1 to about 1000 parts per million by volume.6. The method of claim 4 , wherein the corrosion inhibitor composition is introduced into the environment in an amount of about 1000 parts per million by volume or less.7. A method of inhibiting corrosion of a metal claim 4 , the method comprising contacting the metal with an effective amount of a corrosion inhibitor composition comprising a 2-mercaptobenzimidazole ...

DUAL MODE CORROSION INHIBITOR FOR HYDROCARBON PROCESSES

A method of suppressing corrosion of a corrodible metal surface that contacts a fluid stream in a hydrocarbon system. The method includes introducing into the fluid stream a treatment chemistry including an organometallic corrosion inhibitor having a metal and an organic carboxylic acid. The organometallic corrosion inhibitor is hydrocarbon soluble and the metal is released from the organometallic corrosion inhibitor in the presence of water or 1. A method of suppressing corrosion of a corrodible metal surface that contacts a fluid stream in a hydrocarbon system , the method comprising:introducing into the fluid stream a treatment chemistry including an organometallic corrosion inhibitor having a metal and an organic carboxylic acid,{'sub': '2', 'wherein the organometallic corrosion inhibitor is hydrocarbon soluble and the metal is released from the organometallic corrosion inhibitor in the presence of water or HS.'}2. The method of suppressing corrosion of a corrodible metal surface according to claim 1 , wherein the organometallic corrosion inhibitor is a metal carboxylate compound.3. The method of suppressing corrosion of a corrodible metal surface according to claim 2 , wherein the metal carboxylate is stannous octoate.4. The method of suppressing corrosion of a corrodible metal surface according to claim 1 , wherein the metal is selected from the group consisting of tin claim 1 , molybdenum claim 1 , tungsten claim 1 , manganese claim 1 , boron claim 1 , aluminum claim 1 , zinc claim 1 , zirconium claim 1 , titanium claim 1 , iron claim 1 , and nickel.5. The method of suppressing corrosion of a corrodible metal surface according to claim 1 , wherein the organic carboxylic acid is a fatty acid selected from among the groups consisting of C4-C28 carboxylic acids claim 1 , naphthenic acids claim 1 , cyclic acids claim 1 , maleic olefin copolymers claim 1 , laureth acids claim 1 , oxirane modified acids claim 1 , ethoyxylated acids claim 1 , propoxylated acids ...

Corrosion resistance when using chelating agents in carbon steel-containing equipment

The present invention relates to the use of solutions containing glutamic acid N,N-diacetic acid or a salt thereof (GLDA) and/or methylglycine N,N-diacetic acid or a salt thereof (MGDA) in treating subterranean formations, wherein the solutions contact carbon steel-containing equipment, and to a system containing a carbon steel-containing material in contact with a solution containing glutamic acid N,N-diacetic acid or a salt thereof (GLDA) and/or methylglycine N,N-diacetic acid or a salt thereof (MGDA), at elevated temperatures and/or employing carbon steel types as usually found in subterranean formations. 1. A method of treating subterranean formations using a solution containing glutamic acid N ,N-diacetic acid or a salt thereof (GLDA) and/or methylglycine N ,N-diacetic acid or a salt thereof (MGDA) , comprising contacting carbon steel-containing equipment with the solution at a temperature of at least 100° C.2. The method of claim 1 , wherein the carbon steel-containing equipment is cleaned or descaled.3. The method of claim 1 , wherein the solution is an acidic solution.4. The method of claim 1 , wherein the subterranean formation is used in oil and/or gas production claim 1 , in pickling claim 1 , completions claim 1 , stimulation by acidizing claim 1 , or fracturing.5. The method of claim 1 , wherein the solution in addition contains water and a corrosion inhibitor.6. The method of claim 5 , wherein the amount of corrosion inhibitor is more than 0 up to 3 vol % on total volume of the solution.7. The method of claim 1 , wherein the solution in addition contains one or more of water claim 1 , solvents claim 1 , alcohols claim 1 , glycols claim 1 , organic solvents claim 1 , mutual solvents claim 1 , soaps claim 1 , surfactants claim 1 , dispersants claim 1 , emulsifiers claim 1 , pH control additives claim 1 , acids or bases claim 1 , biocides/bactericides claim 1 , water softeners claim 1 , bleaching agents claim 1 , enzymes claim 1 , brighteners claim 1 , ...

CORROSION INHIBITION

Corrosion of steel by aqueous acidic solution when treating a wellbore with acid is inhibited by a procedure in which the steel is initially exposed to a first aqueous solution containing one or more corrosion inhibiting constituents which provide both corrosion inhibitor and hydrophobic liquid and deposit a corrosion inhibiting film on the steel surface and then exposed to an acidic second aqueous solution containing one or more such corrosion inhibiting constituents at a lower concentration. During this second period, the lower concentration of corrosion inhibiting constituents in the second aqueous solution maintains the film already established on the steel surface. Weight loss through corrosion in the second stage is lower than the weight loss which otherwise would be observed. Overall there can be reduction of both weight loss and consumption of corrosion inhibitor. 2. A method according to wherein the second aqueous solution contains corrosion inhibitor able to adsorb to a steel surface and the concentration of said corrosion inhibitor in the second aqueous solution is less than in the first aqueous solution.3. A method according to wherein the first aqueous solution contains at least one corrosion inhibitor which is polymerisable on the steel surface.4. A method according to wherein the corrosion inhibitor which is polymerisable on the steel surface is an acetylenic alcohol.5. A method according to wherein the water-insoluble hydrophobic materials are selected from water-insoluble amines claim 1 , cationic surfactants and water-insoluble hydrophobic liquids.6. A method according to wherein corrosion inhibitor and hydrophobic liquid in the first aqueous solution are provided by at least one corrosion inhibitor which is able to adsorb to a steel surface and which is a water-insoluble hydrophobic liquid.7. A method according to wherein the corrosion inhibiting constituents in the first aqueous solution comprise at least one corrosion inhibitor able to adsorb to ...

ANTI-CORROSION COATING COMPOSITION

Provided is a humic acid-based coating suspension comprising humic acid, particles of an anti-corrosive pigment or sacrificial metal, and a binder resin dissolved or dispersed in a liquid medium, wherein the humic acid has a weight fraction from 0.1% to 50% based on the total coating suspension weight excluding the liquid medium. Also provided is an object or structure coated at least in part with such a coating. 1. A humic acid-based coating suspension comprising humic acid , particles of an anti-corrosive pigment or sacrificial metal , and a binder resin dissolved or dispersed in a liquid medium , wherein said humic acid has a weight fraction from 0.1% to 50% based on the total coating suspension weight excluding the liquid medium.2. The coating suspension of claim 1 , wherein said anti-corrosive pigment or sacrificial metal is selected from aluminum claim 1 , chromium claim 1 , zinc claim 1 , beryllium claim 1 , magnesium claim 1 , an alloy thereof claim 1 , zinc phosphate claim 1 , or a combination thereof.3. The coating suspension of claim 1 , wherein said liquid medium is selected from water claim 1 , an organic solvent claim 1 , an alcohol claim 1 , an ionic liquid claim 1 , or a combination thereof.4. The coating suspension of claim 1 , wherein said binder resin comprises a thermoset resin selected from the group consisting of epoxy resin claim 1 , polyurethane resin claim 1 , urethane-urea resin claim 1 , phenolic resin claim 1 , acrylic resin claim 1 , alkyd resin claim 1 , and combinations thereof.5. The coating suspension of claim 1 , wherein said coating suspension further comprises from 0.01% to 30% by weight of single-layer or few-layer graphene sheets selected from a pristine graphene material having essentially zero percent of non-carbon elements claim 1 , or a non-pristine graphene material having 0.001% to 47% by weight of non-carbon elements wherein said non-pristine graphene is selected from graphene oxide claim 1 , reduced graphene oxide claim ...

Corrosion control compositions and methods of mitigating corrosion

Corrosion inhibitor compositions are provided that can include a mixture of one or more transition metals, one or more organic phosphates, one or more inorganic phosphates, optionally a dispersant, and hydroxyphosphono acetic acid and/or salts thereof. Methods of mitigating or inhibiting corrosion of housing or conduits containing aqueous mediums are also disclosed. The methods can include the steps of pretreating the metal conduit with a mixture of one or more transition metals, one or more organic phosphates, one or more inorganic phosphates, and hydroxyphosphono acetic acid, introducing an aqueous medium into the metal conduit, and injecting a mixture of one or more transition metals, one or more organic phosphates, one or more inorganic phosphates, and hydroxyphosphono acetic acid and/or salts thereof into the aqueous medium.

Use Of A Composition Containing At Least One Biodegradable Sugar-Amide-Compound In Combination With At Least One Sulfur-Based Synergist For Corrosion Inhibition Of A Metallic Equipment In Oilfield Applications

In this invention the use of glucamides in combination with at least one sulfur-based synergist chosen from the group of thiols, thioethers, thiosulfates, thioglycolic acids, thiourea or derivatives thereof in a formulation for corrosion inhibition in the gas and oil industry is described. 214.-. (canceled)17. The process according to claim 15 , in which Ra is an alkyl or alkenyl group with 7 to 21 carbon atoms.18. The process according to claim 15 , in which Rb is methyl.19. The process according to claim 15 , in which the sulfur synergist is represented by the formula R—S—Rwherein Ris hydrogen claim 15 , and Ris an alkyl group with 1 to 12 carbon atoms that may contain oxygen or nitrogen atoms.20. The process according to claim 15 , in which the sulfur synergist is represented by the formula R—S—Rwherein{'sup': '1', 'Ris an alkyl group having 1 to 4 carbon atoms, that may contain oxygen or nitrogen atoms and'}{'sup': '2', 'Ris an alkyl group having 2 to 26 carbon atoms, that may contain oxygen or nitrogen atoms'}21. The process according to claim 15 , wherein one of Rand Rcomprises a carboxylic acid group.22. The process according to claim 21 , in which the sulfur synergist is represented by the formula M(HSCHCOO)wherein{'sub': '4', 'a) x=1 and M is selected from the group consisting of Li, Na, K, Ag, Cu or NH, and tertiary amines with alkyl, alkylene or alkoxyalkyl side groups, that may also be cyclic and may contain the heteroatoms O or N;'}b) x=2 and M is selected from the group consisting of Mg, Ca, Sr, Cu, Zn, Pb or Fe and tertiary amines with alkyl, alkylene or alkoxyalkyl side groups, that may also be cyclic and may contain the heteroatoms O or N;c) x=3 and M is selected from the group consisting of Al, Bi or Fe.23. The process according to claim 15 , in which the sulfur synergist is claim 15 , represented by the formula M(SO) wherein{'sub': '4', 'x=2 and y=1 and M=Li, Na, K, Ag, Cu or NH; or'}x=1 and y=1 and M=Mg, Ca, Sr, Cu, Zn, Pb or Fe; orx=2 and y=3 ...

BIOCIDE COMPOSITION AND USE THEREOF

The present disclosure relates to biocide compositions, formulations and methods for using formulations. In particular the present disclosure relates to biocide compositions and their use in effecting biocidal activity in subterranean oil and gas wells being drilled, completed, worked over or produced. 1. A process for reducing a bacterial population in a gas or oil well comprising ,a. treating the gas or oil well with a stabilized hypochlorous acid solution, andb. treating the gas or oil well with a water soluble bromide ion source.2. A process for treating flowback water in a gas or oil well comprising ,a. treating the flowback water with a stabilized hypochlorous acid solution, andb. treating the flowback water with a water soluble bromide ion source.38.-. (canceled)9. A composition for use in the drilling , completion , work over or production of subterranean oil and gas wells comprising hypobromous acid (HOBr) formed from contacting a stabilized hypochlorous acid solution with a water soluble bromide ion source.10. The process of claim 1 , wherein the stabilized hypochlorous acid solution is formed by contacting a chlorine source with a stabilizing agent in an aqueous solution.11. The process of claim 10 , wherein the chlorine source is an alkali or alkaline earth metal hypochlorite claim 10 , or chlorine gas.12. The process of claim 10 , wherein the stabilizing agent is selecter from the group consisting of urea claim 10 , thiourea claim 10 , creatinine claim 10 , mono or di-ethanolamine claim 10 , organic sulfonamide claim 10 , biuret claim 10 , sulfamic acid claim 10 , organic sulfamate claim 10 , and melamine.13. The process of claim 1 , wherein the water soluble bromide ion source is selected from the group consisting of sodium bromide claim 1 , potassium bromide claim 1 , lithium bromide claim 1 , chlorine bromide claim 1 , and bromine.14. The process of claim 2 , wherein the stabilized hypochlorous acid solution is formed by contacting a chlorine source ...

CORROSION INHIBITOR DERIVED FROM VEGETABLE OILS AND IT'S PROCESS OF OBTAINING

The present invention is directed to a formulation of corrosion inhibitors for corrosion control of low carbon steel piping, carrying different fuels products, obtained in refineries or petrochemical processes. The composition comprises active imidazoline inhibitors derived from vegetable oil selected from the group consisting of sunflower, canola, soybean, safflower, corn and mixtures thereof that are reacted with a polyalkylated polyamines such as diethylenetriamines (DETA), triethylenetetramine (TETA) and tetraethylenepentamine (TEPA). The imidazoline is reacted with 1 to 3 moles of a carboxylic acid having 2 to 6 carbon atoms. The product obtained is formulated with 50 to 60% weight of an aromatic solvent and 10 to 20 wt % of an alcohol. The compositions were evaluated in sour environments under the NACE TM0172 and ASTM G 185 method, and both, sour and sweet environments in the NACE ID182 method, so they are fit to pass the tests as indicated by the NRF-005-PEMEX-2009 standard for application in pipelines. 1. A corrosion inhibitor composition for low carbon steel pipelines for the transportation of sour or sweet hydrocarbon streams , said composition comprising 30 to 40% of an active carboxy-imidazoline corrosion inhibitor derived from vegetable oil selected from the group consisting of sunflower , canola , safflower , and canola/Sunflower , 5 to 10 wt.% glycerin and 50 to 60 wt.% of an aromatic solvent and 10-20 wt.% of an alcohol.3. The corrosion inhibitor composition in accordance with claim 2 , wherein the carboxylic acid is acrylic acid.5. A method of producing the inhibitor composition of claim 1 , wherein said method comprised a first step of producing an imidazoline precursor claim 1 , and a second step of modifying the imidazoline precursor to obtain the carboxy-imidazoline active component.6. The method in accordance with claim 5 , wherein the limidazoline precursors are obtained from sunflower claim 5 , canola claim 5 , soybean claim 5 , safflower ...

CORROSION INHIBITING POLYMER COMPOSITIONS, MIXTURES, AND METHODS OF USING THE SAME

Disclosed herein are polymer compositions useful for inhibiting corrosion of metal surfaces in industrial process water recirculating systems. The polymer compositions include interpolymers of about 90 mol % to about 97 mol % of a first monomer, about 0.01 mol % to about 5 mol % of a second monomer that is chemically different from the first monomer, and about 0.01 mol % to about 5 mol % of a third monomer that is chemically different from the first and second monomers; and optionally a fourth monomer that is chemically different from the first, second, and third monomers. About 0.05 ppm to about 200 ppm by weight of the polymer composition is dispersed in an industrial process water source, optionally in the presence of a divalent or higher valency metal ion. The dispersed polymer compositions significantly reduce the corrosion rate of metal surfaces of industrial equipment, even after one or more cycles of concentration. 1. A corrosion inhibiting mixture comprisingan industrial process water source; andabout 0.05 ppm to about 200 ppm by weight of a polymer composition dispersed in the water source, the polymer composition comprising the residues of about 90 mol % to about 97 mol % of a first monomer, about 0.01 mol % to about 5 mol % of a second monomer that is chemically different from the first monomer, and about 0.01 mol % to about 5 mol % of a third monomer that is chemically different from the first and second monomers,wherein the first monomer is acrylic acid, a salt thereof, or a conjugate base thereof; maleic acid, a salt thereof, or a conjugate base thereof; or methacrylic acid, a salt thereof, or a conjugate base thereof,the second monomer is 2-acrylamido-2-methylpropane sulfonic acid, a salt thereof, or a conjugate base thereof; maleic acid, a salt thereof, or a conjugate base thereof; methacrylic acid, a salt thereof, or a conjugate base thereof; methallyl sulfonate; or sulfostyrene; andthe third monomer is 2-acrylamido-2-methylpropane sulfonic acid, a ...

METHODS AND CEMENT COMPOSITIONS FOR REDUCING CORROSION OF WELLBORE CASINGS

A corrosion inhibiting cement composition for reducing corrosion of wellbore casings is disclosed that includes from 10 weight percent to 70 weight percent cement precursor, from 5 weight percent to 70 weight percent water, from 0.1% to 60% by weight of cement amine corrosion inhibitor, where the amine corrosion inhibitor comprises a polyethylene polyamine. A method for reducing corrosion of wellbore casings includes dispensing the corrosion inhibiting cement compositions into the annulus and allowing the corrosion inhibiting cement composition to cure to form a hardened cement, where the corrosion inhibiting cement composition includes a cement composition and the amine corrosion inhibitor. 1. A method for reducing corrosion in tubular strings installed in wellbores , the method comprising:dispensing a corrosion inhibiting cement composition into an annulus defined between a tubular string and an inner wall of a wellbore or between two tubular strings, where the corrosion inhibiting cement composition comprises a polyethylene polyamine and a cement composition comprising a cement precursor and water; andallowing the corrosion inhibiting cement composition to cure in the annulus to form a cured cement, where the polyethylene polyamines in the corrosion inhibiting cement composition react with a metal of the tubular string, the reaction forming a protective layer on the surfaces of the tubular string, the protective layer preventing dissolution of iron from the metal of the tubular string.2. The method of claim 1 , further comprising drilling a portion of a wellbore and placing a tubular string in the wellbore.3. The method of claim 1 , further comprising preparing the corrosion inhibiting cement composition claim 1 , where preparing the corrosion inhibiting cement composition comprises:preparing the cement composition;combining the polyethylene polyamine and the cement composition to produce the corrosion inhibiting cement composition; andmixing the corrosion ...

NOVEL DOWNHOLE METHODS

A method for the fracking or stimulation of a hydrocarbon-bearing formation, said method comprising the steps of: 2. The method according to claim 1 , wherein the breakdown acidic composition comprises an acid selected from the group consisting of: mineral acids; organic acids; and combinations thereof.3. The method according to claim 1 , wherein the breakdown acidic composition comprises an acid selected from the group consisting of: HCl; methanesulphonic acid; toluenesulfonic acid; sulfamic acid; HCl:amino acid; and HCl:alkanolamine.4. The method according to claim 1 , wherein the breakdown acidic composition is an acid comprising an HCl:amino acid claim 1 , where the amino acid is selected from the group consisting of: lysine; lysine monohydrochloride; alanine; asparagine; aspartic acid; cysteine; glutamic acid; histidine; leucine; methionine; proline; serine; threonine; valine; and combinations thereof.5. The method according to claim 1 , wherein the breakdown acidic composition is an acid comprising an HCl:alkanolamine wherein the alkanolamine is selected from the group consisting of: monoethanolamine; diethanolamine; triethanolamine and combinations thereof.6. The method according to claim 1 , wherein the breakdown acidic composition is an acid comprising HCl:monoethanolamine.8. The method according to claim 7 , wherein the breakdown acidic composition comprises an acid selected from the group consisting of: mineral acids; organic acids; and combinations thereof.9. The method according to claim 7 , wherein the breakdown acidic composition comprises an acid selected from the group consisting of: HCl; methanesulphonic acid; toluenesulfonic acid; sulfamic acid; HCl:amino acid; and HCl:alkanolamine.10. The method according to claim 7 , wherein the breakdown acidic composition is an acid comprising an HCl:amino acid claim 7 , where the amino acid is selected from the group consisting of: lysine; lysine monohydrochloride; alanine; asparagine; aspartic acid; cysteine ...

CORROSION INHIBITOR COMPOSITION FOR PIPELINES

The present invention relates to the low cost high performing corrosion inhibitor composition and process for preparation thereof. The corrosion inhibitor comprises of an ester of cashew nut shell liquid (CNSL), a dimer fatty acid (DFA), a long chain amine and a solvent. The corrosion inhibitor composition prevents corrosion of internal metal surface of pipelines due to petroleum products. 2. The composition as claimed in claim 1 , wherein the ester of cashew nut shell liquid (CSNL) is present in the range of 0.01 to 10% by weight.3. The composition as claimed in claim 1 , wherein the dimer fatty acid (DFA) is present in the range of 50 to 95% by weight.4. The composition as claimed in claim 1 , wherein the long chain amine is present in the range of 0.1 to 20% by weight.5. The composition as claimed in claim 1 , wherein the solvent is present in the range of 10 to 45% by weight.6. The composition as claimed in claim 1 , wherein the dimer fatty acid (DFA) is having alkyl chain of carbon atoms in the range of 30 to 50.7. An additive composition as claimed in claim 1 , wherein the dimer fatty acid (DFA) is a mixture of fatty acids having alkyl chain of 16 to 24 carbon atoms.8. The composition as claimed in claim 1 , wherein the long chain amine is having carbon atoms in the range of 10 to 18.9. The composition as claimed in claim 1 , wherein the ester of cashew nut shell liquid include ester of technical CNSL or hydrogenated CNSL or mixture thereof.10. The composition as claimed in claim 1 , wherein the solvent is an aromatic solvent or a aliphatic solvent or a petroleum solvent.11. The composition as claimed in claim 10 , wherein the solvent is selected from the group comprising of xylene claim 10 , toluene claim 10 , alkylated benzene claim 10 , isopropanol claim 10 , butanol claim 10 , pentanol claim 10 , pre-fractionator rerun column bottom claim 10 , or a combination thereof.12. A process for preparation of a corrosion inhibitor composition claim 10 , the process ...

NOVEL CORROSION INHIBITION PACKAGE

An inhibition corrosion package for use with an acidic composition, where the package comprises a terpene component; a propargyl alcohol or derivative thereof; at least one amphoteric surfactant; and a solvent. Also disclosed are acidic compositions combining the corrosion inhibition package according to a preferred embodiment of the present invention for use in various industrial operations including but not limited to oil and gas operations. Also disclosed are methods of use of such compositions. 1. A corrosion inhibition package for use with an aqueous acid composition , said package comprising:a terpene;a propargyl alcohol or derivative thereof;at least one amphoteric surfactant; anda solvent.2. The corrosion inhibition package as claimed in claim 1 , wherein the terpene is selected from the group consisting of:citral;ionone;ocimene; andcymene.3. The corrosion inhibition package as claimed in claim 1 , wherein the at least one amphoteric surfactant is selected from the group consisting of:a sultaine surfactant; a betaine surfactant; and combinations thereof.4. The corrosion inhibition package as claimed in claim 3 , wherein the sultaine surfactant and betaine surfactant are selected from the group consisting of:an amido betaine surfactant; an amido sultaine surfactant; and combinations thereof.5. The corrosion inhibition package as claimed in claim 4 , wherein the amido betaine surfactant and is selected from the group consisting of:an amido betaine comprising a hydrophobic tail from C8 to C16.6. The corrosion inhibition package as claimed in claim 5 , wherein the amido betaine surfactant comprising a hydrophobic tail from C8 to C16 is cocamidobetaine7. The corrosion inhibition package as claimed in claim 1 , further comprising an anionic surfactant.8. The corrosion inhibition package as claimed in claim 7 , wherein the anionic surfactant is a carboxylic surfactant or a sulfonic surfactant.9. The corrosion inhibition package as claimed in claim 8 , wherein the ...

Corrosion Resistance When Using Chelating Agents in Chromium-Containing Equipment

The present invention relates to process to reduce the corrosion of equipment containing a chromium-containing alloy in the oil and/or gas industry, comprising a step of contacting the equipment based on a chromium-containing alloy with a solution containing at least 1 wt % on total weight of the solution of glutamic acid N,N-diacetic acid or a salt thereof (GLDA) and/or methylglycine N,N-diacetic acid or a salt thereof (MGDA) having an acidic pH, the use of the above solutions in equipment containing a chromium-containing alloy to reduce corrosion, and to a system containing a piece of equipment used in the oil and/or gas industry made at least partly from chromium-containing alloy in contact with an acidic solution containing at least 1 wt % of glutamic acid N,N-di acetic acid or a salt thereof (GLDA) and/or methylglycine N,N-di acetic acid or a salt thereof (MGDA). 1. A process to reduce the corrosion of equipment containing a chromium-containing alloy in the oil and/or gas industry , comprising a step of contacting the equipment containing a chromium-containing alloy with a solution containing between 2 and 50 wt % on total weight of the solution of glutamic acid N ,N-diacetic acid or a salt thereof (GLDA) and/or between 2 and 40 wt % methylglycine N ,N-diacetic acid or a salt thereof (MGDA) having an acidic pH.2. A process to reduce the corrosion of equipment containing a chromium-containing alloy in the treatment of a subterranean formation wherein an acidic solution is introduced into the formation and at least part of the acid in the acidic solution is glutamic acid N ,N-diacetic acid or a salt thereof (GLDA) and/or methylglycine N ,N-diacetic acid or a salt thereof (MGDA) , and the acidic solution comes into contact with the equipment containing a chromium-containing alloy.3. The process of wherein the amount of GLDA and/or MGDA is at least 1 wt % on total weight of the solution.4. A process for preventing or reducing corrosion in equipment containing a ...

THIOL ADDUCTS FOR CORROSION INHIBITION

Compounds, compositions and methods are provided for inhibiting corrosion at a surface in the production, transportation, storage, and separation of fluids such as crude oil and natural gas, the compounds having the formula: 5. The composition of claim 4 , wherein the component comprises the organic solvent claim 4 , and the organic solvent comprises an alcohol claim 4 , a hydrocarbon claim 4 , a ketone claim 4 , an ether claim 4 , an alkylene glycol claim 4 , a glycol ether claim 4 , an amide claim 4 , a nitrile claim 4 , a sulfoxide claim 4 , an ester claim 4 , or a combination thereof claim 4 , and the composition optionally comprises water.6. The composition of claim 4 , wherein the component comprises the organic solvent claim 4 , and the organic solvent comprises methanol claim 4 , ethanol claim 4 , propanol claim 4 , isopropanol claim 4 , butanol claim 4 , 2-ethylhexanol claim 4 , hexanol claim 4 , octanol claim 4 , decanol claim 4 , 2-butoxyethanol claim 4 , methylene glycol claim 4 , ethylene glycol claim 4 , 1 claim 4 ,2-propylene glycol claim 4 , 1 claim 4 ,3-propylene glycol claim 4 , diethyleneglycol monomethyl ether claim 4 , diethylene glycol monoethyl ether claim 4 , ethylene glycol monobutyl ether claim 4 , ethylene glycol dibutyl ether claim 4 , pentane claim 4 , hexane claim 4 , cyclohexane claim 4 , methylcyclohexane claim 4 , heptane claim 4 , decane claim 4 , dodecane claim 4 , diesel claim 4 , toluene claim 4 , xylene claim 4 , heavy aromatic naphtha claim 4 , cyclohexanone claim 4 , diisobutylketone claim 4 , diethyl ether claim 4 , propylene carbonate claim 4 , N-methylpyrrolidinone claim 4 , N claim 4 ,N-dimethylformamide claim 4 , or a combination thereof.7. The composition of claim 4 , wherein the component comprises the corrosion inhibitor claim 4 , and the corrosion inhibitor comprises an imidazoline compound claim 4 , a quaternary ammonium compound claim 4 , a pyridinium compound claim 4 , or a combination thereof.8. The composition of ...

Corrosion Inhibitor Composition for Magnesium or Magnesium Alloys

The present invention relates to novel corrosion inhibitor compositions for magnesium or magnesium alloys and to a process for inhibiting the corrosion of such metals using such compositions. The corrosion inhibitor composition for magnesium or magnesium alloys comprises at least one corrosion inhibiting compound which is capable of forming a complex with at least one of Fe(II), Fe(III), Cu(I), Cu(II) and Ni(II) ions, where the complex with at least one of Fe(II), Fe(III), Cu(I), Cu(II) and Ni(II) ions has a stability constant in aqueous solution at room temperature (about 21° C.) log K of greater than or equal to 3.5 wherein the corrosion inhibiting compound is selected from the group of pyridinedicarboxylic acids, and their salts or esters thereof. 1. A corrosion inhibitor composition for magnesium or magnesium alloys comprising at least one corrosion inhibiting compound which is selected from the group of pyridine-dicarboxylic acids , their salts , esters or amides , and pyridine-dicarboxaldehyde dioximes.2. The corrosion inhibitor composition of claim 1 , wherein the pyridinedicarboxylic acids claim 1 , their salts claim 1 , esters and/or amides are selected from the group consisting of 2 claim 1 ,6-pyridinedicarboxylic acid claim 1 , 2 claim 1 ,5-pyridinedicarboxylic acid claim 1 , 2 claim 1 ,4-pyridinedicarboxylic acid claim 1 , 2 claim 1 ,3-pyridinedi-carboxylic acid claim 1 , 3 claim 1 ,5-pyridinedicarboxylic acid claim 1 , 3 claim 1 ,4-pyridine-dicarboxylic acid claim 1 , and their salts claim 1 , esters and/or amides.3. The corrosion inhibitor composition of claim 1 , wherein the pyridinedicarboxylic acids claim 1 , their salts claim 1 , esters and/or amides are selected from the group consisting of 2-amino-3 claim 1 ,5-pyridinedicarboxylic acid claim 1 , 2-hydroxy-3 claim 1 ,5-pyridine-dicarboxylic acid claim 1 , 2-chloro-3 claim 1 ,5-pyridinedicarboxylic acid claim 1 , 2-methyl-3 claim 1 ,5-pyridinedi-carboxylic acid claim 1 , 2-ethyl-3 claim 1 ,5- ...

CORROSION INHIBITOR SYSTEMS FOR LOW, MODERATE AND HIGH TEMPERATURE FLUIDS AND METHODS FOR MAKING AND USING SAME

A corrosion control system is disclosed including an anionic oxygen inhibitor, a cationic acid inhibitor or dispersant, and a noxious species inhibitor or scavenger for use in a fluid in contact with a metallic surface at low temperature, moderate temperature and especially at high temperature. A drilling fluid, a completion fluid, a production fluid and a geothermal fluid including an effective amount of the corrosion control system is also disclosed as well as methods for making and using same. 1. An aqueous drilling fluid comprising:water andeffective amount of a corrosion control system including an anionic scale inhibitor, a cationic acid inhibitor or dispersant, and a noxious species inhibitor or scavenger to a fluid in contact with a metallic surface.2. The drilling fluid of claim 1 , further comprising:a density reduction additive.3. The drilling fluid of claim 1 , further comprising:a shale inhibitor.4. The drilling fluid of claim 1 , further comprising:a pH modifier present in an amount sufficient to adjust the pH of the drilling fluid to pH 10.0.5. A corrosion control system comprising an anionic scale inhibitor claim 1 , a cationic acid inhibitor or dispersant claim 1 , and a noxious species inhibitor or scavenger to a fluid in contact with a metallic surface6. The system of claim 5 , further comprising:a pH modifier.7. The system of claim 6 , wherein the pH modifier is KOH or lime.8. The system of claim 5 , wherein the system has a pH of about 10.0.9. A corrosion control system comprising an anionic oxygen inhibitor claim 5 , a cationic acid inhibitor or dispersant claim 5 , and a noxious species inhibitor or scavenger for use in an oil or gas well fluid during drilling claim 5 , completion claim 5 , production claim 5 , fracturing or second oil recovery operations.10. A water-base drilling fluid for use in drilling wells through a formation containing a clay which swells in the presence of water claim 5 , the drilling fluid comprising:(a) a weight ...

EXTRACTION OF HYDROCARBONS FROM HYDROCARBON-CONTAINING MATERIALS AND/OR PROCESSING OF HYDROCARBON-CONTAINING MATERIALS

A method of extracting hydrocarbon-containing organic matter from a hydrocarbon-containing material includes the steps of providing a first liquid comprising a turpentine liquid; contacting the hydrocarbon-containing material with the turpentine liquid to form an extraction mixture; extracting the hydrocarbon material into the turpentine liquid; and separating the extracted hydrocarbon material from a residual material not extracted. 1. A method of inhibiting the corrosive and toxic effects of a reactive sulfur species in a sulfur-containing hydrocarbon containing material from a natural geological formation containing , comprising:providing a substantially surfactant-free, non-aqueous turpentine liquid selected from the group consisting of natural turpentine, synthetic turpentine, mineral turpentine, pine oil, α-pinene, β-pinene, α-terpineol, β-terpineol, γ-terpineol, terpene resins, α-terpene, β-terpene, γ-terpene, geraniol, 3-carene, dipentene (p-mentha-1,8-diene), nopol, pinane, 2-pinane hydroperoxide, terpin hydrate, 2-pinanol, dihydromycenol, isoborneol, p-menthan-8-ol, α-terpinyl acetate, citronellol, p-menthan-8-yl acetate, 7-hydroxydihydrocitronellal, menthol, anethole, camphene; p-cymene, anisaldeyde, 3,7-dimethyl-1,6-octadiene, isobornyl acetate, ocimene, alloocimene, alloocimene alcohols, 2-methoxy-2,6-dimethyl-7,8-epoxyoctane, camphor, citral, 7-methoxydihydro-citronellal, 10-camphorsulphonic acid, cintronellal, menthone, and mixtures thereof;contacting the sulfur-containing hydrocarbon-containing material with the substantially surfactant-free, non-aqueous turpentine liquid such that at least a portion of the reactive sulfur species from said sulfur-containing hydrocarbon containing material is extracted into the substantially surfactant-free, non-aqueous turpentine liquid from the natural geological formation; andrecovering hydrocarbon containing material from which reactive sulfur species has been removed such that the corrosive and toxic effects of ...

FLUORO-INORGANICS FOR ACIDIFICATION OR NEUTRALIZATION OF WATER SYSTEMS

The present invention generally relates to methods for reducing the pH of aqueous mixtures with the advantage of preventing formation of deposits and scales on internal surfaces in contact with the aqueous systems. These methods also that the advantages that they reduce pH with less corrosion or metal loss of the internal surface as compared with a conventional strong acid used to reduce the pH in such systems. The methods use an acid composition comprising a salt of a nitrogen base having a fluoro inorganic anion. 1. A method for reducing the pH of an aqueous system comprising contacting an acid composition with an internal surface of a piece of equipment ,wherein the acid composition comprises a salt of a nitrogen base having a fluoro inorganic anion.2. A method for reducing the pH of an aqueous system comprising contacting an acid composition with an aqueous mixture that contacts an internal surface of a piece of equipment ,wherein the acid composition comprises a salt of a nitrogen base having a fluoro inorganic anion.3. The method of claim 1 , wherein the aqueous system is a produced water claim 1 , a feedwater claim 1 , a surface water claim 1 , a ground water claim 1 , or a combination thereof.4. The method of claim 1 , wherein the acid composition further comprises a surfactant.5. The method of claim 4 , wherein the surfactant is a nonionic surfactant.6. The method of claim 3 , wherein the acid composition further comprises a corrosion inhibitor.79.-. (canceled)10. The method of claim 1 , wherein the acid composition removes inorganic deposits.11. The method of claim 10 , wherein the piece of equipment is a boiler claim 10 , a steam generator claim 10 , an evaporator claim 10 , a heat exchanger claim 10 , a tube bundle claim 10 , a cooling coil claim 10 , a chiller claim 10 , a tank claim 10 , a sump claim 10 , a containment vessel claim 10 , a pump claim 10 , a distributor plate claim 10 , a geothermal injection well claim 10 , a geothermal production well ...

TREATMENT DEVICE AND TREATMENT METHOD FOR PICKLING AND PHOSPHATING METAL PARTS

A treatment device for single-stage treatment of a metal object to be treated by at least the steps of pickling and phosphating. The treatment device comprises at least the following: a treatment container for receiving the object to be treated and for receiving a flowable treatment substance; and a pump device for exchanging at least a fraction of the treatment substance. The treatment substance is flowable around at least one part of the object to be treated. The treatment substance comprises a phosphor- or phosphate-containing solution, in particular phosphoric acid. The phosphor- or phosphate-containing solution consists partly of water and partly of a reaction substance, and the reaction substance consists of phosphor or a phosphate and an additional treatment effect-improving substance. The proportion of the phosphor or phosphate in the reaction substance is at least 95%, and the reaction substance does not have a salt acid or sulfuric acid content. 1. A treatment device for the single-stage treatment of a metal object to be treated , wherein the treatment encompasses at least pickling and phosphating of the object to be treated , wherein the treatment device comprises:a treatment container for receiving the object to be treated and for receiving a flowable treatment substance; anda pump device for circulating at least a fraction of the treatment substance;wherein the treatment substance is flowable around at least one part of the object to be treated,wherein the treatment substance is a phosphor or phosphate-containing solution,wherein the phosphor or phosphate-containing solution comprises water and a reaction substance,wherein the reaction substance comprises phosphor or a phosphate and at least one additional treatment effect-improving substance,wherein the proportion of the phosphor or phosphate in the reaction substance measures at least 95%,wherein the reaction substance does not have a salt acid or sulfuric acid content.2. The treatment device ...

CORROSION INHIBITING AQUEOUS EMULSIONS CONTAINING HYDROPHILIC GROUP FUNCTIONALIZED SILICONE POLYMERS

Methods of inhibiting corrosion of metal surfaces by aqueous acids are described. The methods include combining a corrosion inhibiting aqueous emulsion with the aqueous acid solution to form a treatment fluid and contacting the metal surface with the treatment fluid. The corrosion inhibiting aqueous emulsion includes one or more silicone polymers having hydrophilic functional groups. 1. A method of inhibiting corrosion of a metal surface contacted by an aqueous acid solution comprising:combining a corrosion inhibiting aqueous emulsion with the aqueous acid solution to form a treatment fluid, the corrosion inhibiting aqueous emulsion comprising an internal phase of one or more silicone polymers having hydrophilic functional groups; andcontacting the metal surface with the treatment fluid.2. The method of claim 1 , wherein the one or more silicone polymers comprise polydimethylsiloxane.3. The method of claim 1 , wherein the hydrophilic functional groups comprise one or more of amino claim 1 , hydroxyl claim 1 , sulfhydryl claim 1 , and carboxyl groups.4. The method of claim 1 , wherein the corrosion inhibiting aqueous emulsion is combined with the aqueous acid solution in an amount in the range of about 0.1% to about 10.0% by weight of the aqueous acid solution.5. The method of claim 1 , wherein the one or more silicone polymers are present in an amount of about 30% to about 60% by weight of the corrosion inhibiting aqueous emulsion.6. The method of claim 1 , wherein the corrosion inhibiting aqueous emulsion further comprises water and an emulsifier.7. The method of claim 6 , wherein the water is present in an amount of about 35% to about 65% by weight of the corrosion inhibiting aqueous emulsion and the emulsifier is present in an amount of about 5% by weight of the corrosion inhibiting aqueous emulsion.8. The method of claim 6 , wherein the emulsifier comprises a non-ionic emulsifier.9. The method of claim 1 , wherein the corrosion inhibiting aqueous emulsion ...

ANTI-CORROSION COATING COMPOSITION

Provided is a humic acid-based coating suspension comprising humic acid, particles of an anti-corrosive pigment or sacrificial metal, and a binder resin dissolved or dispersed in a liquid medium, wherein the humic acid has a weight fraction from 0.1% to 50% based on the total coating suspension weight excluding the liquid medium. Also provided is an object or structure coated at least in part with such a coating. 1. (canceled)2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. (canceled)9. (canceled)10. (canceled)11. (canceled)12. (canceled)13. (canceled)14. (canceled)15. A coating comprising humic acid , particles of an anti-corrosive pigment or sacrificial metal , and a binder resin , wherein said humic acid occupies a weight fraction from 0.1% to 50% based on the total coating weight.16. The object or structure of claim 15 , wherein said anti-corrosive pigment or sacrificial metal is selected from the group consisting of aluminum claim 15 , chromium claim 15 , zinc claim 15 , beryllium claim 15 , magnesium claim 15 , an alloy thereof claim 15 , zinc phosphate claim 15 , and combinations thereof.17. The object or structure of claim 15 , wherein said coating has a thickness from 1 nm to 1.0 mm.18. The object or structure of claim 15 , wherein said binder resin comprises a material selected from the group consisting of ester resin claim 15 , a neopentyl glycol (NPG) claim 15 , ethylene glycol (EG) claim 15 , isophthalic acid claim 15 , a terephthalic acid claim 15 , a urethane resin claim 15 , a urethane ester resin claim 15 , an acrylic resin claim 15 , an acrylic urethane resin claim 15 , and combinations thereof.19. The object or structure of claim 15 , wherein said binder resin comprises a curing agent and/or a coupling agent in an amount of 1 to 30 parts by weight based on 100 parts by weight of the binder resin.20. The object or structure of claim 15 , wherein said binder resin comprises a thermally curable resin containing a ...

Corrosion inhibitors

The present invention provides the use of a sulfosuccinate as a corrosion inhibitor. In particular, the sulfosuccinate may be used to inhibit the corrosion of a metal component that is, or will be, in contact with an aqueous fluid, in order to prevent or reduce corrosion of the metal component. The sulfosuccinate may be used to inhibit corrosion of a metal component in an industrial aqueous system, such as a hydrocarbon plant; a chemical plant; a water plant; or a paper manufacturing plant, and in particular in an oilfield system or a downstream oil-related system.

GREEN HIGH-EFFICIENCY CORROSION INHIBITOR

A corrosion inhibitor for use in aqueous fluids, e.g. brine, which contact a metal surface, contains a blend or cross-linked reaction product of a main chain type polybenzoxazine (MCTPB) and a chitosan component selected from the group consisting of chitosan, chitosan glycol, and combinations thereof. The MCTPB can be made by reacting formaldehyde, bisphenol A, and tetraethylenepentamine (TEPA). The corrosion inhibitor may contain a small amount of an inorganic acid and/or an organic acid. Suitable organic acids include, but are not necessarily limited to organic acid selected from the group of carboxylic acid consisting of formic acid, acetic acid, propionic acid, butyric acid, valeric acid, caproic acid, citric acid, oxalic acid, malic acid, lactic acid, benzoic acid, or selected from the group of sulfonic acids consisting of p-toluenesulfonic acid, trifluoromethanesulfonic acid, 2-aminoethanesulfonic acid, alkyl-aryl-sulfonic acids such as dodecylbenzenesulfonate, polymeric sulfonic acids, fluorinated derivatives of these organic acids, and combinations thereof. 1. A method for inhibiting or preventing the corrosion of a metal surface in contact with an aqueous fluid , the method comprising: a blend of a main chain type polybenzoxazine (MCTPB) and a chitosan component selected from the group consisting of chitosan, chitosan glycol, and combinations thereof;', 'a cross-linked reaction product of chitosan and MCTPB; and', 'combinations thereof., 'introducing an effective amount of a corrosion inhibitor into the aqueous fluid in contact with the metal surface to inhibit or prevent corrosion of the metal surface, where the corrosion inhibitor is selected from the group consisting of2. The method of where the aqueous fluid is brine.3. The method of where the weight ratio of chitosan to MCTPB ranges from about 5 to 1 to about 0.5 to 3.5.4. The method of where the weight ratio of chitosan to MCTPB is about 1 to 3.5.5. The method of where the effective amount of ...

COOLANT CONCENTRATE CONTAINING SILICATE

The invention relates to a silicate-containing coolant concentrate, including at least one freezing-point lowering liquid, at least one mixture of at least two saturated, aliphatic dicarboxylic acids, at least one saturated aliphatic or hydroxyl-containing aromatic mono-carboxylic acid, at least one azole, at least one stabilizing silicate, at least one phosphonocarboxylic acid, and at least one heteropoly complex anion from the group IIIA to VIA of the periodic table of the elements. 1. A silicate-containing coolant concentrate consisting essentially of:at least one freezing-point lowering liquid,at least one mixture of at least two saturated, aliphatic dicarboxylic acids,at least one saturated aliphatic or hydroxyl-containing aromatic mono-carboxylic acid,at least one azole,at least one stabilizing silicate,at least one phosphonocarboxylic acid, andat least one heteropoly complex anion from the group IIIA to VIA of the periodic table of the elements.2. The coolant concentrate according to claim 1 , wherein the freezing point lowering liquid is a compound of the group including alkylene glycol claim 1 , alkylene glycol ether claim 1 , glycol ether claim 1 , glycerin claim 1 , or of a mixture of two or more of these compounds.3. The coolant concentrate according to claim 1 , wherein the dicarboxylic acids have a chain length between four and 12 carbon atoms.4. The coolant concentrate according to claim 1 , wherein the dicarboxylic acids and/or the monocarboxylic acids are present in the form of their alkaline or alkaline earth metal salts.5. The coolant concentrate according to claim 1 , wherein the heteropoly complex anion is a molybdate anion.6. The coolant concentrate according to claim 1 , wherein the heteropoly complex anion is an anion from the group including phosphomolybdates claim 1 , silicon molybdates claim 1 , manganese molybdates claim 1 , silicon tungstates claim 1 , tellurium molybdates claim 1 , arsenic molybdates claim 1 , or a mixture thereof.7. ...

METHOD OF REMOVING MINERAL SCALES FROM A SUBSTRATE WITH MINIMIZED CORROSION OF THE SUBSTRATE

A method of removing mineral scales from a substrate with minimized corrosion of the substrate includes the steps of providing an acid solution providing a corrosion inhibitor solution, applying the acid solution to the substrate to remove mineral scales therefrom, and applying the corrosion inhibitor solution to the substrate to minimize corrosion thereof. The acid solution includes a mineral acid, an organic acid, or a combination thereof. The corrosion inhibitor solution includes an alpha-beta unsaturated aldehyde, a hydrophobic amine, and an oxime. The corrosion inhibitor solution optionally includes formic acid, a surfactant, and a solvent. 1. A method of removing mineral scales from a substrate with minimized corrosion of the substrate , said method comprising the steps of:providing an acid solution comprising a mineral acid, an organic acid, or a combination thereof; an alpha-beta unsaturated aldehyde;', 'a hydrophobic amine; and', 'an oxime; and optionally formic acid;', 'a surfactant; and', 'a solvent;, 'providing a corrosion inhibitor solution comprisingapplying the acid solution to the substrate to remove mineral scales therefrom; andapplying the corrosion inhibitor solution to the substrate to minimize corrosion thereof.2. The method of wherein the alpha-beta unsaturated aldehyde is cinnamaldehyde.3. The method of wherein the corrosion inhibitor solution further comprises the formic acid claim 1 , the surfactant claim 1 , and the solvent.4. The method of wherein the hydrophobic amine is chosen from oleyl-propanediamine claim 1 , cocopropanediamine claim 1 , soyapropanediamine claim 1 , tallowpropanediamine claim 1 , and combinations thereof.5. The method of wherein the hydrophobic amine is oleyl-propanediamine.6. The method of wherein the oxime is chosen from methyl ethyl ketoxime claim 1 , cyclohexanone oxime claim 1 , and combinations thereof.7. The method of wherein the oxime is methyl ethyl ketoxime.8. The method of further comprising the step of ...

ANTICORROSIVE COMPOSITION

The present invention relates to the discovery that melanoidins, and higher molecular weight fractions of products containing melanoidins, provide significant corrosive inhibition, which render these melanoidins suitable for use as anticorrosive agents in corrosive environments. In addition to being highly anticorrosive, the melanoidins of the present invention are environmentally friendly and non-toxic, and can be found in animal food and in human foodstuffs. 1. A method of reducing the corrosion caused by a chloride salt , the method comprising the steps of:obtaining a molecular weight fraction of a product containing melanoidins, wherein the molecular weight fraction comprises melanoidins having a molecular weight greater than or equal to 12,400;forming an aqueous solution including the molecular weight fraction of a product containing melanoidins; andapplying the solution to a metal surface, wherein the molecular weight fraction of a product containing melanoidins reduces corrosion at the metal surface caused by the chloride salt.2. The method of claim 1 , wherein the metal surface contains iron.3. The method of claim 1 , wherein the product containing melanoidins is selected from the group consisting of sugar cane and sugar beets.4. The method of claim 1 , wherein the product containing melanoidins is selected from the group consisting of molasses claim 1 , corn steep liquor claim 1 , brewers condensed solubles claim 1 , and distillers condensed solubles.5. The method of claim 1 , wherein the metal surface is a roadway.6. The method of claim 1 , wherein the metal surface is an oil well surface.7. The method of claim 1 , wherein the chloride salt is at least one selected from the group consisting of sodium chloride claim 1 , magnesium chloride claim 1 , calcium chloride claim 1 , and potassium chloride.8. The method of claim 1 , wherein the chloride salt is an industrial brine.9. The method of claim 1 , further comprising the step of adding a carbohydrate having ...

USE OF SULFONIUM SALTS AS CORROSION INHIBITORS

The present invention generally relates to the use of aryl sulfonium salts as a corrosion inhibitor in a water injection system, a hydrocarbon extraction system, or a hydrocarbon production system. Treating oilfield injection and produced fluids with aryl sulfonium salts can significantly decrease microbially induced corrosion. Thus, these aryl sulfonium salts can be effectively used as corrosion inhibitors in oilfield fluids. 1. A method of inhibiting corrosion at a surface , the method comprising contacting the surface with an effective amount of an anticorrosion composition comprising an aryl sulfonium salt or mixture of aryl sulfonium salts , wherein the surface is in contact with a hydrocarbon-containing fluid.2. The method of claim 1 , wherein the anticorrosion composition is effective to reduce microbially induced corrosion.4. (canceled)5. The method of claim 3 , wherein the aryl sulfonium salt comprises a cation of Formula 2.6. The method of claim 3 , wherein the aryl sulfonium salt comprises a dication of Formula 3.7. The method of claim 3 , wherein the aryl sulfonium salt comprises a cation of Formulae 1 and 2.8. The method of claim 3 , wherein the aryl sulfonium salt comprises a cation of Formula 1 and a dication of Formula 3.9. The method of claim 3 , wherein the aryl sulfonium salt comprises a cation of Formula 2 and a dication of Formula 3.10. The method of claim 3 , wherein the aryl sulfonium salt comprises a cation of Formulae 1 and 2 claim 3 , and a dication of Formula 3.11. (canceled)12. The method of claim 10 , wherein one to three of R-Rare independently alkyl and the balance are hydrogen.13. The method of claim 10 , wherein R-Rare hydrogen.14. The method claim 3 , wherein the counterion for the aryl sulfonium salt is chloride claim 3 , bromide claim 3 , fluoride claim 3 , iodide claim 3 , nitrate claim 3 , perchlorate claim 3 , sulfonate claim 3 , carbonate claim 3 , chromate claim 3 , hexafluoroarsenate claim 3 , hexafluorophosphate claim 3 , p ...

Composition to Reduce Friction Reducer Fouling in Wellbores

A method of spearheading an acid into a wellbore is adapted to avoid the gelation of a friction reducer polymer. The method comprises injecting a synthetic or modified acid composition down a wellbore, the composition comprising: a synthetic or modified acid; a solvent; and a chelating agent. Optionally the composition may comprise a corrosion inhibitor package. The method further includes allowing sufficient time for the synthetic or modified acid composition to react with material which require acidic treatment and injecting a fracturing composition comprising a liquid and a friction reducing polymer down the wellbore. 1. A method of spearheading an acid into a wellbore adapted to avoid the gelation of a friction reducer polymer , wherein said method comprises:injecting a synthetic acid composition down a wellbore, said composition comprising: a synthetic or modified acid; a solvent; and a chelating agent compound, optionally, the composition may comprise a corrosion inhibitor package;allowing sufficient time for the synthetic or modified acid composition to react with material which require acidic treatment;injecting a fracturing composition comprising a liquid and a friction reducing polymer down the wellbore.2. A method of spearheading an acid into a wellbore adapted to reduce the gelation of a friction reducer polymer , wherein said method comprises:injecting a synthetic or modified acid composition down a wellbore, said composition comprising: a synthetic or modified acid; a solvent; and a chelating agent compound, optionally, the composition may comprise a corrosion inhibitor package;allowing sufficient time for the synthetic or modified acid composition to react with material which require acidic treatment;injecting a fracturing composition comprising a liquid and a friction reducing polymer down the wellbore.3. The method according to where the modified acid is selected from the group consisting of: Urea-HCl; amino acid-HCl; and alkanolamine-HCl.4. The ...

PH-SENSITIVE CAPSULE AND RELEASE SYSTEM

A pH-sensitive release system comprising a capsule capable of releasing an agent in both low pH environments and high pH environments. The capsule encapsulates an agent and comprises at least two weak polyelectrolytes (e.g., PEI and PAA). The capsule responds to both low and high pH changes in the local environment by releasing the agent. The agent may include a corrosion inhibitor and may help prevent or ameliorate the effects of corrosion.

GREEN COMPOSITIONS FOR USE IN DOWNHOLE AND INDUSTRIAL APPLICATIONS

Crude oil may be treated with an additive made with Tire Pyrolysis Oil and naphtha, condensate, or both naphtha and condensate. Also disclosed herein are compositions including Tire Pyrolysis Oil wherein the composition is selected from the group consisting of: pipeline cleaner, tank cleaner, paraffin inhibitor or modifier, asphaltene inhibitor or modifier, scale inhibitor, corrosion inhibitor, stimulation fluid, crude oil density reducer, and crude oil viscosity reducer. The Tire Pyrolysis Oil is a green product recovered from recycling tires. 1. A composition comprising Pyrolysis Oil wherein the composition is selected from the group consisting of: pipeline cleaner , tank cleaner , paraffin inhibitor or modifier , asphaltene inhibitor or modifier , scale inhibitor , corrosion inhibitor , stimulation fluid , crude oil density reducer , and crude oil viscosity reducer.2. The composition of wherein the composition is a pipeline cleaner.3. The composition of wherein the composition is a tank cleaner.4. The composition of wherein the composition is a paraffin inhibitor or modifier.5. The composition of wherein the composition is an asphaltene inhibitor or modifier.6. The composition of wherein the composition is a scale inhibitor.7. The composition of wherein the composition is a corrosion inhibitor.8. The composition of wherein the composition is a stimulation fluid.9. The composition of wherein the composition is a crude oil density reducer.10. The composition of wherein the composition is a crude oil viscosity reducer.11. The composition of where in the Pyrolysis Oil is prepared using the method of U.S. Pat. No. 6 claim 1 ,835 claim 1 ,861.12. The composition of where in the Pyrolysis Oil is prepared using the method of U.S. Patent Publication No. 2008/0096787.13. A crude oil additive comprising naphtha and Pyrolysis Oil.14. A crude oil additive comprising condensate and Pyrolysis Oil.15. A method for reducing the viscosity of crude oil comprising introducing a ...

SYNTHESIS OF ARYL 1-(METHOXYMETHYL) VINYL KETONES AND THEIR USE AS INHIBITORS OF MILD STEEL CORROSION

Methods for preparing alkenylphenone corrosion inhibiting compositions may include providing an arylacetone and reacting the arylacetone with formaldehyde in the presence of a strong base catalyst. Corrosion inhibiting compositions may include an alkenylphenone, which may be prepared by a method including providing an arylacetone and reacting the arylacetone with formaldehyde in the presence of a strong base catalyst. Methods of inhibiting corrosion of a steel surface of an oilfield equipment component may include contacting the steel surface with an aqueous solution comprising a corrosion inhibitor. The corrosion inhibitor may include a composition containing an alkenylphenone prepared by reacting an arylacetone with formaldehyde in the presence of a strong base catalyst. 2. The method of claim 1 , wherein Ris a substituted aryl group claim 1 , wherein the aryl group is substituted by one or more of an alkyl group claim 1 , an alkenyl group claim 1 , an alkoxide group claim 1 , a halogen group claim 1 , an halogenoalkyl claim 1 , and an aryl group.3. The method of claim 1 , wherein Ris a phenyl group claim 1 , a methoxyphenyl group claim 1 , a tolyl group claim 1 , a xylyl group claim 1 , an ethylphenyl group claim 1 , an isopropylphenyl group claim 1 , an ethoxyphenyl group claim 1 , a propyloxyphenyl group claim 1 , chlorophenyl group claim 1 , or a chloromethylphenyl group.4. The method of claim 1 , wherein reacting the arylacetone with formaldehyde is performed in the presence of an alkyl alcohol.5. The method of claim 1 , wherein reacting the arylacetone with formaldehyde is performed in the presence of methanol.6. The method of claim 1 , wherein 1 equivalent of the arylacetone is reacted with 2 equivalents of formaldehyde.7. The method of claim 1 , wherein the strong base catalyst comprises sodium hydroxide.11. The composition of claim 10 , wherein Ris a substituted aryl group claim 10 , wherein the aryl group is substituted by one or more of an alkyl group ...

Method of Using Dithiazines and Derivatives Thereof in the Treatment of Wells

Corrosion of metallic tubulars in an oil, gas or geothermal well may be inhibited by introducing into the well a dithiazine derivative of the formula: 2. The dithiazine of claim 1 , wherein Ris a C-Cstraight chain or branched alkyl group.3. The dithiazine of claim 1 , wherein X is —Cl.4. The dithiazine of claim 1 , wherein the dithiazine is of formula (IV).5. The dithiazine of claim 1 , wherein the dithiazine is of formula (V).6. The dithiazine of claim 5 , wherein Ris benzyl or naphthylmethyl.7. The dithiazine of claim 6 , wherein Ris methyl.8. The dithiazine of claim 7 , wherein Ris benzyl.9. The dithiazine of claim 1 , wherein Ris methyl.10. The dithiazine of claim 4 , wherein Ris phenyl.12. The method of claim 11 , wherein the at least one component is an alkyl or alkenyl substituted quaternary pyridine selected from the group consisting of N-butyl-4-methylpyridinium chloride claim 11 , dodecylpyridinium chloride and tetradecylpyridinium chloride claim 11 , N-methylpyridinium chloride claim 11 , N-methylpyridinium bromide claim 11 , N-ethylpyridinium chloride claim 11 , N-ethylpyridinium bromide claim 11 , 2-vinylpyridinium chloride claim 11 , 2-vinylpyridinium bromide claim 11 , 3-vinylpyridinium chloride claim 11 , 3-vinylpyridinium bromide claim 11 , 4-vinylpyridinium chloride and 4-vinylpyridinium bromide and mixtures thereof.13. The method of claim 11 , wherein the corrosion inhibiting formulation further comprises a hydrophilic solvent with the at least one component.14. The method of claim 13 , wherein the hydrophilic solvent is water or an organic solvent.15. The method of claim 11 , wherein the weight ratio of spent fluid to the corrosion inhibiting formulation is between from about 25:75 to about 75:25.16. The method of claim 15 , wherein the weight ratio of spent fluid to the corrosion inhibiting formulation is approximately 50:50.17. The method of claim 11 , wherein the mixture is introduced into the well during stimulation.18. The method of claim 11 ...

USE OF CHARGED CELLULOSE NANOCRYSTALS FOR CORROSION INHIBITION AND A CORROSION INHIBITING COMPOSITION COMPRISING THE SAME

There is provided the use of cellulose nanocrystals as a corrosion inhibitor for inhibiting corrosion of a metal object made of steel. The use includes using acid to impart ester groups onto the cellulose nanocrystals. The use includes dispersing an effective corrosion inhibiting amount of the cellulose nanocrystals having the ester groups within a composition comprising a carrier essentially consisting of water. The cellulose nanocrystals are provided in an amount equal to or greater than 0.1% by weight of the carrier and equal to or less than 3.0% by weight of the carrier. The use includes applying an effective corrosion inhibiting amount of the composition to the metal object such that the composition is adapted to inhibit corrosion of the metal object by 8% or more. 152.-. (canceled)53. The use of cellulose nanocrystals as a corrosion inhibitor for inhibiting corrosion of a metal object made of steel , the use comprising:using acid to impart ester groups onto the cellulose nanocrystals;dispersing an effective corrosion inhibiting amount of said cellulose nanocrystals having said ester groups within a composition comprising a carrier essentially consisting of water, the cellulose nanocrystals being in an amount equal to or greater than 0.1 percent by weight of the carrier and equal to or less than 3.0 percent by weight of the carrier; andapplying an effective corrosion inhibiting amount of said composition to the metal object, the composition being adapted to inhibit corrosion of said metal object by 8% or more.54. The use as claimed in claim 53 , wherein the cellulose nanocrystals are obtained via acid hydrolysis and wherein the ester groups are negatively charged.55. The use as claimed in wherein the acid is sulfuric acid claim 53 , each of the cellulose nanocrystals has a surface claim 53 , the ester groups are imparted onto said surfaces of the cellulose nanocrystals claim 53 , and the ester groups are negatively charged sulfate ester groups.56. The use as ...

Novel Acid Corrosion Inhibitor

Acids, such as hydrochloric acid, are pumped down in to the formation in acidizing treatments of oil & gas wells, thru metal pipes/tubing. Corrosion Inhibition of these metal surfaces (pipes, tubing, etc) has been extensively studied. Most known acid corrosion inhibitors (ACI) and acid corrosion inhibitors currently used in the oilfield contain ingredients that are an environmental concern or have poor Health, Safety and Environmental (HSE) characteristics. This invention relates to the discovery of a Novel Acid Corrosion Inhibitor. Aromatic Nitriles, especially Cinnamyl Nitrile, when added to the acid in effective amounts, offers acceptable rates of corrosion inhibition. 1. A Novel Acid Corrosion Inhibitor consisting of an Aromatic Nitrile compound , used independently or in conjunction with other acid corrosion inhibitors , offers excellent corrosion inhibition rates of metal surfaces that come in contact with mineral acids.2. Aromatic Nitrile compound of is Cinnamyl Nitrile3. By using Cinnamyl Nitrile claim 1 , it is possible to formulate a corrosion inhibitor which has acceptable inhibition rates without the use of conventional ingredients that have poor Health claim 1 , Safety and Environmental (HSE) characteristics. Corrosion Inhibitors currently in use contain ingredients like Methanol claim 1 , Acetylenic Compounds claim 1 , Propargyl Alcohol claim 1 , EthylOctynol claim 1 , NonylPhenol claim 1 , Formaldehyde claim 1 , Benzyl Chloride claim 1 , Antimony claim 1 , etc which are either toxic claim 1 , flammable claim 1 , corrosive claim 1 , marine pollutants claim 1 , have large half lives in the environment and/or are not biodegradable. This Invention relates to the acid stimulation of oil & gas wells, and in particular to acidizing treatments and methods of using such acid fluids in treating formations having low permeability.Using aqueous acid solutions to acidize oil & gas wells is well known. Typically, an aqueous acid solution is pumped through the well ...

ORGANIC BLEND ADDITIVE USEFUL FOR INHIBITING LOCALIZED CORROSION OF EQUIPMENT USED IN OIL AND GAS PRODUCTION

An organic blend chemical additive comprising more than 50 wt. % organic solvent (e.g. methanol and/or ethylene glycol), less than 10 wt. % water, a nitrate salt, a maleic acid copolymer, and optionally an imidazoline may be delivered to a production well through a conduit having a stainless steel and corrosion resistant metal alloy surface, such as a capillary string or an umbilical tubing, the organic blend chemical additive being shown to be useful in inhibiting localized corrosion of and improving the repassivation of the equipment or conduit. 1. An organic chemical blend additive corrosion inhibitor comprising:a nitrate;a maleic acid copolymer;an organic solvent in an amount greater than 50 wt. %, based on a total amount of the organic chemical blend additive; andless than 10 wt. % water, based on a total amount of the organic chemical blend additive.2. The organic chemical blend additive corrosion inhibitor of where the nitrate is in solution form and present in the organic chemical blend additive in an amount less than 2 wt. % claim 1 , based on the total amount of the organic chemical blend additive.3. The organic chemical blend additive corrosion inhibitor of where the nitrate is selected from a group consisting of calcium nitrate claim 1 , sodium nitrate claim 1 , potassium nitrate claim 1 , and a combination thereof.4. The organic chemical blend additive corrosion inhibitor of where amount of nitrate present in the blend ranges from about 0.25% of a 45% aqueous solution of nitrate salt to about 5% of a 45% aqueous solution of the nitrate salt.5. The organic chemical blend additive corrosion inhibitor of where the maleic acid copolymer is a polycarboxylic acid having the following chemical description: propenoic acid claim 1 , ethyl ester claim 1 , polymer with ethenyl acetate and 2 claim 1 ,5 furandione claim 1 , hydrolyzed.6. The organic chemical blend additive corrosion inhibitor of where the amount of maleic acid copolymer in the organic chemical blend ...

Multifunctional surfactant and corrosion inhibitor additives

Multifunctional surfactants useful in, for example, in the oil and gas industry, are provided. In some embodiments, the multifunctional surfactants include at least one amide group and at least one thiol group in the same molecule. In some embodiments, the methods include contacting a metal surface with at least one multifunctional additive that includes at least one amide group and at least one thiol group in the same molecule; and allowing the multifunctional additive to interact with at least a portion of the metal surface.

SLURRY FOR CHEMICAL MECHANICAL POLISHING OF COBALT

The invention provides a chemical-mechanical polishing composition including (a) an abrasive comprising alumina particles, silica particles, or a combination thereof, (b) a rate accelerator comprising a phosphonic acid, an N-heterocyclic compound, or a combination thereof, (c) a corrosion inhibitor comprising an amphoteric surfactant, a sulfonate, a phosphonate, a carboxylate, a fatty acid amino acid, an amine, an amide, or a combination thereof, (d) an oxidizing agent, and (e) an aqueous carrier. The invention also provides a method of polishing a substrate, especially a substrate comprising a cobalt layer, with the polishing composition. 1. A chemical-mechanical polishing composition comprising:(a) about 0.1 wt. % to about 13 wt. % of an abrasive comprising alumina particles, silica particles, or a combination thereof,(b) about 0.05 wt. % to about 5 wt. % of a rate accelerator comprising a phosphonic acid, an N-heterocyclic compound, or a combination thereof,(c) a corrosion inhibitor comprising an amphoteric surfactant, a sulfonate, a phosphonate, a carboxylate, a fatty acid amino acid, an amine, an amide, or a combination thereof,(d) about 0.1 wt. % to about 5 wt. % of an oxidizing agent, and(e) an aqueous carrier.2. The chemical-mechanical polishing composition of claim 1 , wherein the abrasive comprises alumina particles claim 1 , wherein the alumina particles are alpha alumina particles claim 1 , and wherein at least a portion of the surface of the alpha alumina particles is coated with a negatively-charged polymer or copolymer.3. The chemical-mechanical polishing composition of claim 1 , wherein the abrasive comprises silica particles claim 1 , and wherein the silica particles are colloidal silica particles.4. The chemical-mechanical polishing composition of claim 1 , wherein the abrasive is present in the polishing composition at a concentration of about 0.3 wt. % to about 4 wt. %.5. The chemical-mechanical polishing composition of claim 1 , wherein the rate ...

Corrosion Inhibitor Injection Apparatus and Methods

An inhibitor solution injector system for an IC decapsulation apparatus has a source reservoir of inhibitor solution, a fluid injection apparatus connected to the source reservoir by a fluid passage, an injection coupling having a first input passage for inhibitor solution, and a through passage for etchant solution, the input passage intersecting with the through passage, and control circuitry controlling the controlled fluid injection apparatus. The fluid injection apparatus is controlled to draw inhibitor solution from the source reservoir, and to inject inhibitor solution through the input passage into the through passage of the injection coupling. 1. An inhibitor solution injector system for an IC decapsulation apparatus , comprising:a source reservoir of inhibitor solution;a fluid injection apparatus connected to the source reservoir by a fluid passage;an injection coupling having a first input passage for inhibitor solution, and a through passage for etchant solution, the input passage intersecting with the through passage; andcontrol circuitry controlling the controlled fluid injection apparatus;wherein the fluid injection apparatus is controlled to draw inhibitor solution from the source reservoir, and to inject inhibitor solution through the input passage into the through passage of the injection coupling.2. The injector system of wherein the fluid injection apparatus is controlled to inject inhibitor solution at one or more of specific times claim 1 , in specific quantity or at specific rate claim 1 , coordinated with measured flow of etchant solution through the through passage.3. The injector system of wherein the fluid injection apparatus is controlled to inject a specific quantity of inhibitor solution into the through passage at a time when there is no flow of etchant solution through the through passage.4. The injector system of wherein the fluid injection apparatus comprises a syringe apparatus having a plunger driven by a translator mechanism.5. ...

NOVEL MILD STEEL CORROSION INHIBITOR COMPOUNDS

Compounds and methods of inhibiting corrosion of mild steel. Compounds disclosed herein are cationic and contain multiple functional motifs such as propargyl, cinnamaldehyde, isoxazolidine and hydrophobe. These compounds are found to be effective in inhibiting mild steel corrosion in HCl, HSO, NaCl and CO-saturated environments. 2. The compound of claim 1 , wherein the compound is selected from the group consisting of:p-9-(2-methylisoxazolidin-5-yl)undec-1-yloxybenzaldehyde;p-9-(2-methylisoxazolidin-5-yl)non-1-yloxycinnamaldehyde; andp-9-[2-methyl-2-(2-popyn-1-yl) isoxazolidinium-5-yl]non-1-yloxycinnamaldehyde chloride.3. The compound of claim 1 , wherein the compound is prepared with a method comprising the following steps:(a) alkylating an arylaldehyde with a haloalkene to form a haloaryl alkene; and(b) cycloadding a nitrone to the haloaryl alkene to form an isoxazolidine.4. The compound of claim 3 , wherein the method further comprises the following steps:(c) contacting isoxazolidine with an acid to form an acid derivative; and(d) reducing then oxidizing the acid derivative to form a substituted cinnamaldehyde.5. The compound of claim 4 , wherein the method further comprises the following step:(e) quaternizing the nitrogen atom in the substituted cinnamaldehyde with a haloalkyne to form a quaternary salt.6. The compound of claim 1 , wherein the compound is effective in inhibiting corrosion of mild steel surrounded by an environment containing at least one acidic fluid claim 1 , at least one neutral salt or combinations thereof.7. The compound of claim 6 , wherein the acidic fluid is selected from the group consisting of HCl claim 6 , HSO claim 6 , HNO claim 6 , COand HS.8. The compound of claim 6 , wherein the acidic fluid is present at a saturated concentration.9. The compound of claim 1 , wherein the compound is effective in inhibiting corrosion of mild steel at concentrations of 10 to 1000 parts by the total weight of fluids that are in contact with the mild ...

TREATMENT FLUID CONTAINING A CORROSION INHIBITOR POLYMER OF A CARBOHYDRATE AND QUATERNARY AMINE

A treatment fluid comprises: water; a carboxylate; and a corrosion inhibitor, wherein the corrosion inhibitor is environmentally-friendly, biodegradable, and is a polymer, wherein the polymer comprises a carbohydrate backbone and a quaternary amine functional group; wherein a test fluid consisting essentially of the water, the carboxylate, and the corrosion inhibitor, and in the same proportions as in the treatment fluid, is capable of providing a corrosion weight loss to a metal plate of less than 0.05 pounds per square feet (lb/ft) under testing conditions of 200° F. (93.3° C.), a pressure of 500 psi (3.4 MPa), and a time of 24 hours whereas a substantially identical test fluid without the corrosion inhibitor provides a corrosion weight loss of greater than 0.05 lb/ftunder the testing conditions. A method of treating a portion of a well comprises: forming the treatment fluid; and introducing the treatment fluid into the well. 1. A method of treating a portion of a well comprising: (A) water;', '(B) a carboxylate, wherein the carboxylate is part of a delayed acid breaker system; and', '(C) a corrosion inhibitor, wherein the corrosion inhibitor is environmentally-friendly, biodegradable, and is a polymer, wherein the polymer comprises a carbohydrate backbone and a quaternary amine functional group, and wherein the polymer has a molecular weight such that the polymer is biodegradable;', {'sup': 2', '2, 'wherein a test fluid consisting essentially of the water, the carboxylate, and the corrosion inhibitor, and in the same proportions as in the treatment fluid, is capable of providing a corrosion weight loss to a metal plate of less than 0.05 pounds per square feet (lb/ft) under testing conditions of 200° F. (93.3° C.), a pressure of 500 psi (3.4 MPa), and a time of 24 hours whereas a substantially identical test fluid without the corrosion inhibitor provides a corrosion weight loss of greater than 0.05 lb/ftunder the testing conditions; and'}], 'forming a treatment ...

Composition and Method for Treating Water Systems

A solid composition for treating cooling or heated water systems to remove scale, microorganisms and biofilm, and corrosion by-products. The composition for cooling towers and chilled water systems comprises chelating agents and an anionic surfactant. The composition for boilers and heated water systems comprises a sulfite, neutralizing amines, sodium phosphate, and, optionally, a polymethacrylate or polyacrylate polymer. A method for using such a treatment composition comprises contacting the treatment composition with substantially all parts of the water system. 1. A solid composition for treating a boiler or heated water system , the composition comprising a neutralizing amine , a sulfite , and a phosphate , wherein the total concentrations when mixed with a volume of water being treated are in the range of about 0 to 200 ppm amine , 5 to 100 ppm sulfite , and 5 to 100 ppm phosphate.2. The solid composition according to wherein the composition comprises about 5 to 70% total weight of one or more neutralizing amines claim 1 , 10 to 95% total weight of one or more phosphates claim 1 , 0 to 30% total weight of one or more sulfites claim 1 , and 3 to 10% water.3. The solid composition according to wherein the neutralizing amine is selected from the group consisting of cyclohexamine claim 2 , morpholine and or diethylaminoethanol.4. The solid composition of wherein the phosphate is monosodium phosphate and the sulfite is sodium metabisulfite.5. The solid composition according to wherein the sulfite is sodium sulfite.6. The solid composition according to wherein the phosphate is disodium or trisodium phosphate.7. A method of treating a boiler or heated water system claim 1 , the method comprising the steps of:providing a solid treatment composition comprising a neutralizing amine, a sulfite, and a phosphate, wherein the total concentrations when dissolved and added to a volume of water being treated are in the range of about 0 to 200 ppm amine, 5 to 100 ppm sulfite, ...

Composite material composition for neutralizing acid compounds and pipe comprising a sheath made from same

The invention relates, on the one hand, to a composite material composition capable of neutralizing acid compounds and of being used under high temperature conditions, said composition being a mixture of a polymer material with a predetermined amount of reactive fillers, the mass fraction of the chemically active products ranges between 4 and 40% and the polymer material is selected from the vinylidene fluoride copolymers family, comprising a vinylidene fluoride monomer, and at least one monomer being selected from among the following monomers: hexafluoropropylene, perfluoro(methylvinyl)ether, perfluoro(ethylvinyl)ether, perfluoro (propylvinyl)ether, tetrafluoroethylene, perfluorobutylethylene, fluoropropylene, chlorotrifluoroethylene, chlorodifluoroethylene, chlorofluoroethylene, trifluoroethylene, and the monomer with the following formulation: CH 2 ═CH—CF 2 —(CF 2 ) 4 —CF 3 and, on the other hand, to a pipe comprising at least one sheath made from the composite material composition.

IDENTIFICATION AND CHARACTERIZATION OF NOVEL CORROSION INHIBITOR MOLECULES

Methods of employing corrosion inhibitors with oxidizing and/or non-oxidizing biocides, such as peroxycarboxylic acids, to provide corrosion protected compositions are disclosed. Various corrosion inhibitors further provide biocidal efficacy in addition to the corrosion protection providing further benefits for application of use. Methods of employing corrosion protected biocide compositions, such as peroxycarboxylic acid compositions, for corrosion protection are particularly well suited for treating fluids intended to flow through pipes, namely in the energy industry, water and paper industries, etc. Methods providing suitable corrosion protection in comparison to untreated systems and corrosion protected systems using conventional corrosion inhibitors, such as quaternary amines and imidazolines commonly used in the industry, are disclosed. 1. A method for inhibiting corrosion from a target treated with a biocide comprising:{'sub': 1', '22', '1', '22, 'contacting a target with a biocide comprising a C-Cperoxycarboxylic acid composition or a C-Cperoxycarboxylic acid forming composition or a non-oxidizing biocide;'}contacting the target with a corrosion inhibitor that is an alkyl pyridinium salt, cetyl pyridinium salt, polyesteramide, dimethicone, imidazole derivative, sulphonamide or combination thereof; andinhibiting corrosion, wherein the treated target has reduced corrosion in comparison to a target that is not treated with the corrosion inhibitor composition.2. The method of claim 1 , wherein the water source comprises from about 0.5 ppm to about 50 claim 1 ,000 ppm of said peroxycarboxylic acid composition or the non-oxidizing biocide claim 1 , and from about 1 ppm to about 1 claim 1 ,000 ppm of said corrosion inhibitor.3. The method of claim 1 , wherein the contacting of the biocide and the corrosion inhibitor is provided in separate contacting steps providing the biocide and the corrosion inhibitor to the target in need of treatment from at least two ...

ANTI-CORROSION FORMULATIONS WITH STORAGE STABILITY

The present invention concerns the use of at least one compound A comprising at least one —SH or —S—, M+group, at least one —C-G-C— chain, in which G represents an atom from column 16 of the periodic table, not comprising a carboxy group —C(═O)—OH or —C(═O)—O—, and of a molar mass of between 90 g·mol-1 and 1000 g·mol-1, as an additive in a formulation inhibiting corrosion in metals used in the oil industry, and more generally in any kind of industry involving the drilling of ores or fossil compounds, such as gas or oil, in order to improve both the anti-corrosion performance and the storage stability of same. The invention also concerns said corrosion-inhibiting formulations comprising at least one compound A. 1. A corrosion-inhibiting formulation comprising:a) at least one amine or amine derivative, [{'sup': −', 'p+', 'p+, 'i. the compound A contains at least one —SH or —SM group, where M represents a cation of an alkali metal (Group 1) or of an alkaline earth metal (Group 2), or of a metal of Groups 7, 8, 9, 10, 11 or 12 of the Periodic Table of the Elements, p representing the valency of the metal and being 1, 2 or 3,'}, 'ii. the compound A comprises at least one —C-G-C— sequence, where G represents an atom of Group 16 of the Periodic Table of the Elements,', {'sup': '−', 'iii. the compound A does not contain a —C(═O)—OH or —C(═O)—O group, and'}, {'sup': −1', '−1, 'iv. the molar mass of the compound A is between 90 g·moland 1000 g·ml, limits included, and'}], 'b) at least one compound A exhibiting at least the following characteristicsc) optionally a solvent or a mixture of two or more solvents.2. The formulation as claimed in claim 1 , wherein:a) represents from 40% to 99.5% by weight, limits included, with respect to the total weight of the components a)+b)+c),b) represents from 0.5% to 30% by weight, limits included, with respect to the total weight of the components a)+b)+c),c) represents from 0% to 59.5% by weight, limits included, with respect to the total ...

Corrosion Inhibition of HCL Treatment Fluids with Environmentally Compatible Solvent

A method of treating in a subterranean formation including placing a corrosion inhibitor composition into a subterranean formation, where the formation includes an acidic environment having a pH of about 5 or below, where the composition includes: an organic solvent comprising an alcohol with a flash point of at least about 75° C.; a nitrogen containing compound; an aqueous acid solution comprising HCl; and contacting a metal surface with the corrosion inhibitor composition. A corrosion inhibitor composition includes an organic solvent comprising an alcohol with a flash point of at least about 75° C.; a nitrogen containing compound; and an aqueous acid solution comprising HCl. 2. The method of claim 1 , wherein the alcohol comprises tetrahydrofurfuryl alcohol (THFA claim 1 , wherein the organic solvent is present in an amount of about 5% to about 100% by weight of the aqueous acid solution claim 1 , wherein the corrosion inhibitor composition further comprises at least one of ethylene glycol claim 1 , diethylene glycol claim 1 , propylene glycol claim 1 , surfactants claim 1 , and combinations thereof claim 1 , and wherein the surfactants are selected from the group consisting of linear alcohol ethoxylates claim 1 , amine alcohol ethoxylates claim 1 , ethoxylated amides claim 1 , ethoxylated alkyl amines claim 1 , alkylphenol claim 1 , alkyoxylated fatty acids claim 1 , and combinations thereof.3. (canceled)4. The method of claim 1 , wherein the at least one aldehyde comprises at least one aldehyde selected from the group consisting of 2-hydroxynapthaldehyde claim 1 , 7-phenyl-2 claim 1 ,4 claim 1 ,6-heptatrienal claim 1 , crotonaldehyde claim 1 , 2-hexenal claim 1 , 2-heptenal claim 1 , 2-octenal; 2-nonenal claim 1 , 2-decenal claim 1 , 2-undecenal claim 1 , 2-dodecenal claim 1 , 2 claim 1 ,4-hexadienal claim 1 , 2 claim 1 ,4-heptadienal claim 1 , 2 claim 1 ,4-octadienal claim 1 , 2 claim 1 ,4-nonadienal claim 1 , 2 claim 1 ,4-decadienal claim 1 , 2 claim 1 ,4- ...

Corrosion inhibitor compositions and methods of using same

Disclosed herein are sulfur-functional tall oil compositions, referred to herein as S-TO compositions. The S-TO is a sulfur-functional tall oil fatty amide composition, or sulfur-functional tall oil phosphate ester composition. Also disclosed herein are S-TO concentrates, which are stable and do not degrade to form H 2 S under standard storage conditions for a period of 1 day to 5 years. Also disclosed herein are treated water sources and treated metal containments including one or more S-TO compositions. The S-TO compositions inhibit corrosion of a metal containments contacted with one or more water sources, wherein the one or more water sources comprise one or more corrodents. The S-TO compositions are as effective or more effective at inhibiting corrosion than conventional sulfur-based corrosion inhibitors when compared on a weight basis.

Corrosion Inhibition

Corrosion of steel in acidic solution is inhibited using a mixture of a compound in which a plurality of heterocyclic aromatic groups with a quaternary nitrogen atom are connected together, such as by a linking group which may be covalently attached to the quaternary nitrogen atoms of the aromatic heterocyclic rings, and a polarizable adsorption-intensifying anion. 1. A method of inhibiting corrosion of metal exposed to aqueous acidic solution comprising including in the solution:at least one compound comprising two to five groups which are connected together and each contain a heterocyclic aromatic ring or ring system comprising at least one ring nitrogen atom which is quaternary in the aqueous acidic solution; andat least one adsorption-intensifying anion which comprises at least one atom of atomic number of 52 or above and/or an anionic group conjugated with an aromatic ring or ring system;wherein the concentration, in equivalents, of the at least one adsorption-intensifying anion is at least equal to the concentration, in equivalents, of the at least one ring nitrogen atom.2. The method according to wherein the at least one ring nitrogen atom is tertiary in aqueous neutral or alkaline solutions.3. The method according to wherein the concentration claim 1 , in equivalents claim 1 , of the at least one adsorption-intensifying anion is at least twice the concentration claim 1 , in equivalents claim 1 , of the at least one ring nitrogen atom.4. The method according to wherein the molar concentration of the at least one adsorption-intensifying anion is at least twice the concentration claim 1 , in equivalents claim 1 , of the at least one ring nitrogen atom.5. The method according to wherein the at least one adsorption-intensifying anion carries a single negative charge.6. The method according to wherein the at least one adsorption-intensifying anion comprises iodide.7. The method according to wherein the at least one adsorption-intensifying anion comprises an ...

IDENTIFICATION AND CHARACTERIZATION OF NOVEL CORROSION INHIBITOR MOLECULES

Methods of employing corrosion inhibitors with oxidizing and/or non-oxidizing biocides, such as peroxycarboxylic acids, to provide corrosion protected compositions are disclosed. Various corrosion inhibitors further provide biocidal efficacy in addition to the corrosion protection providing further benefits for application of use. Methods of employing corrosion protected biocide compositions, such as peroxycarboxylic acid compositions, for corrosion protection are particularly well suited for treating fluids intended to flow through pipes, namely in the energy industry, water and paper industries, etc. Methods providing suitable corrosion protection in comparison to untreated systems and corrosion protected systems using conventional corrosion inhibitors, such as quaternary amines and imidazolines commonly used in the industry, are disclosed. 1. A corrosion inhibited aqueous composition comprising:from about 0.5 ppm to about 50,000 ppm of an oxidizing or non-oxidizing biocide; andfrom about 1 ppm to about 1,000 ppm of a corrosion inhibitor selected from the group consisting of alkyl pyridinium salts, cetyl pyridinium salts, polyesteramides, dimethicones, imidazole derivatives, sulphonamides and combinations thereof,wherein the composition has a pH below 12.0, and wherein the corrosion inhibited aqueous composition provides a treated surface or system with a corrosion rate of less than about 4 mils per year (MPY).2. The composition of claim 1 , wherein the oxidizing biocide is a C1-C22 peroxycarboxylic acid composition or a C1-C22 peroxycarboxylic acid forming composition claim 1 , or the non-oxidizing biocide comprises a quaternary phosphonium salt claim 1 , an aldehyde claim 1 , tetrakis(hydroxymethyl)phosphonium sulfate (THPS) claim 1 , gluteraldehyde or combinations thereof.3. The composition of claim 1 , comprising from about 1 to about 99 wt-% non-oxidizing biocide or oxidizing biocide and from about 1 to about 99 wt-% corrosion inhibitor.4. The composition of ...

METHODS AND COMPOSITIONS FOR INHIBITING CORROSION ON METAL SURFACES

Methods and compositions for inhibiting corrosion of a metal product are provided. The metal product can be contacted with water that includes at least one carbonate and/or bicarbonate salt, or otherwise has components that increase the alkalinity of the water. In addition, or as an alternative, the water can include a stannous corrosion inhibitor. The water can be evaporated off of a surface of the metal product to provide a residual of the salt on the surface and/or a protective stannous film on the surface. 1. A method for inhibiting corrosion of a metal product comprising:contacting a surface of the metal with water that includes at least one salt selected from the group consisting of carbonates, bicarbonates, and combinations thereof; andevaporating the water off of the surface so that a residual of the at least one salt remains on the surface.2. The method of claim 1 , wherein the water that contacts the surface of the metal includes an amount of the at least one salt so that the alkalinity of the water is in the range of from 25 ppm to 1 claim 1 ,000 ppm.3. The method of claim 1 , wherein the water that contacts the surface of the metal further includes a chloride content in the range of from 10 ppm to 1 claim 1 ,000 ppm.4. The method of claim 1 , wherein the water that contacts the surface of the metal further includes a sulfate content in the range of from 2 ppm to 500 ppm.5. The method of claim 1 , wherein the metal is selected from steel claim 1 , aluminum claim 1 , copper claim 1 , and brass.6. The method of claim 1 , wherein the metal is steel and the water is contacted with the surface of the steel during an annealing step.7. The method of claim 1 , further comprising a step of contacting the surface of the metal with water that includes a stannous corrosion inhibitor.8. The method according to claim 7 , wherein the stannous corrosion inhibitor is present in the water that includes the salt.9. A method for inhibiting corrosion of a metal product that ...

METHOD OF TREATING SURFACE OF ALUMINUM SUBSTRATE TO INCREASE PERFORMANCE OF OFFSHORE EQUIPMENT

Disclosed is a method of treating the surface of an aluminum substrate, including (a) forming a porous oxide film on the surface of the aluminum substrate and (b) applying a corrosion inhibitor on the surface of the aluminum substrate having the oxide film formed thereon. The method of treating the surface of the aluminum substrate enables the formation of the porous oxide film on the surface of the aluminum substrate through surface treatment so that the applied corrosion inhibitor is partially absorbed into the porous oxide film, thus exhibiting superior corrosion resistance and anti-fouling effects of the metal substrate, compared to conventional surface treatment methods involving coating only with a corrosion inhibitor. 1. A method of treating a surface of an aluminum substrate , comprising:(a) forming a porous oxide film on the surface of the aluminum substrate; and(b) applying a corrosion inhibitor on the surface of the aluminum substrate having the oxide film formed thereon.2. The method of claim 1 , wherein the aluminum substrate comprises Al7075.3. The method of claim 1 , wherein (a) is performed using an anodizing process or a plasma electrolytic oxidation process.4. The method of claim 3 , wherein the anodizing process is performed at room temperature at a voltage of 30 to 100 V for 1 to 3 hr.5. The method of claim 1 , wherein in (a) claim 1 , the oxide film is formed at a thickness of 10 to 20 μm on the surface of the aluminum substrate.6. The method of claim 1 , wherein the corrosion inhibitor is an oil-type corrosion inhibitor.7. The method of claim 6 , wherein the corrosion inhibitor further comprises a viscosity controller.8. The method of claim 1 , wherein (b) is performed using any one process selected from among spray coating claim 1 , screen printing claim 1 , brushing claim 1 , and dipping.9. The method of claim 1 , wherein (b) further comprises homogenizing the surface of the aluminum substrate claim 1 , after the applying the corrosion ...

USING ACIDIC BALLS FOR ACID STIMULATION IN CARBONATE RESERVOIRS

A method for acid treatment of a wellbore in a carbonate formation is provided. The method includes dropping spacer solids into the well to fill the wellbore to perforations in a casing, dropping acidic solids into the wellbore on the top of the spacer solids, allowing the acidic solids to dissolve on top of the spacer solids forming an acidic solution, and injecting water into the wellbore to force the acidic solution into the carbonate formation. 1. A method for acid treatment of a wellbore in a carbonate formation , comprising:dropping spacer solids into the well to fill the wellbore to perforations in a casing;dropping acidic solids into the wellbore on the top of the spacer solids;allowing the acidic solids to dissolve on top of the spacer solids forming an acidic solution; andinjecting water into the wellbore to force the acidic solution into the carbonate formation.2. The method of claim 1 , comprising:drilling a wellbore to the carbonate formation; andperforating the casing at a production level.3. The method of claim 1 , comprising performing an injection test on the well before dropping the spacer solids into the well.4. The method of claim 1 , comprising performing an injection test after forcing the acidic solution into the formation.5. The method of claim 1 , wherein the spacer solids are spherical.6. The method of claim 1 , wherein the spacer solids comprise a metal alloy that disintegrates in the wellbore.7. The method of claim 1 , wherein the spacer solids comprise a surfactant that dissolves in the wellbore.8. The method of claim 1 , wherein the spacer solids comprise an alkane compound that melts at a temperature of the wellbore.9. The method of claim 1 , wherein the acidic solids are spherical.10. The method of claim 1 , wherein the acidic solids comprise a surfactant mixed with an acid.11. The method of claim 10 , wherein the acid is hydrochloric acid.12. The method of claim 10 , wherein the acid is a solid that dissolves in water.13. The method ...

COMPOSITION FOR REMEDIATING IRON SULFIDE IN OILFIELD PRODUCTION SYSTEMS

A composition for inhibiting corrosion and/or removing hydrocarbonaceous deposits in oil and gas applications is provided. The composition comprises an iron sulfide dissolver, an organic solvent, and a corrosion inhibitor. 1. A composition for inhibiting corrosion and/or removing hydrocarbonaceous deposits in oil and gas applications , the composition comprising:an iron sulfide dissolver comprising allaric acid, altaric acid, altraric acid, altronic acid, arabinaric acid, arabinonic acid, dihomocitric acid, fructuronic acid, fuconic acid, galactaric acid, galactonic acid, galacturonic acid, glucaric acid, glucoheptonic acid, gluconic acid, glucuronic acid, gulonic acid, homocitric acid, homoisocitric acid, idaric acid, idonic acid, iduronic acid, isocitric acid, mannaric acid, mannonic acid, octulosonic acid, rhamnonic acid, ribonic acid, tagaturonic acid, xylonic acid, or xyluronic acid, or a salt or derivative thereof, or a combination thereof;an organic solvent; anda corrosion inhibitor comprising an imidazoline compound, a quaternary ammonium compound, a pyridinium compound, or a combination thereof.2. The composition of claim 1 , wherein the iron sulfide dissolver comprises gluconic acid claim 1 , a salt thereof claim 1 , or a combination thereof.3. The composition of claim 1 , wherein the iron sulfide dissolver comprises sodium gluconate claim 1 , ammonium gluconate claim 1 , potassium gluconate claim 1 , lithium gluconate claim 1 , magnesium gluconate claim 1 , calcium gluconate claim 1 , cesium gluconate claim 1 , gluconic acid claim 1 , sodium glucarate claim 1 , ammonium glucarate claim 1 , potassium glucarate claim 1 , lithium glucarate claim 1 , magnesium glucarate claim 1 , calcium glucarate claim 1 , cesium glucarate claim 1 , glucaric acid claim 1 , or a combination thereof.4. The composition of claim 1 , wherein the iron sulfide dissolver comprises sodium gluconate claim 1 , ammonium gluconate claim 1 , potassium gluconate claim 1 , lithium gluconate ...

Henna Corrosion Inhibitor for Acid in a Well

A method of treating a portion of a well including the steps of: (A) forming a fluid comprising: (i) an aqueous liquid phase; and (ii) a corrosion inhibitor selected from the group consisting of: (a) the leaves of henna, jewelweed, or any combination thereof; (b) an extract of the leaves of henna, jewelweed, or any combination thereof; (c) a plant source of a hydroxynaphthoquinone; (d) a hydroxynaphthoquinone; and (e) any combination an any of the foregoing; and (B) introducing the fluid into the portion of the well. 1. A method of treating a portion of a well , the method comprising the steps of: (i) an aqueous liquid phase; and', (a) the leaves of henna, jewelweed, or any combination thereof;', '(b) an extract of the leaves of henna, jewelweed, or any combination thereof;', '(c) a plant source of a hydroxynaphthoquinone;', '(d) a hydroxynaphthoquinone; and', '(e) any combination an any of the foregoing; and, '(ii) a corrosion inhibitor selected from the group consisting of], '(A) forming a fluid comprising(B) introducing the fluid into the portion of the well.2. The method according to claim 1 , wherein the fluid is a water-based fluid.3. The method according to claim 1 , wherein the aqueous liquid phase comprises a water-soluble inorganic salt.4. The method according to claim 1 , wherein the aqueous liquid phase comprises one or more salts selected from the group consisting of alkali metal halides.5. The method according to claim 1 , wherein the aqueous liquid phase additionally comprises an acid such that an initial pH is less than about 4.6. The method according to claim 5 , wherein the acid comprises HCl.712-. (canceled)13. The method according to claim 1 , wherein the hydroxynaphthoquinone is selected from the group consisting of: 2-hydroxy-1 claim 1 ,4-napthoquinone; 4-hydroxy-1 claim 1 ,2-napthoquinone; and any combination thereof.14. The method according to claim 1 , wherein the extract is in particulate form when being mixed in the step of forming the ...

Method for inhibiting fouling in vapor transport system

Elimination and/or mitigation of fouling in a vapor transport systems, such as vent lines and scrubber feed lines may be accomplished using an antifouling additive. The method for employing the antifouling additive includes introducing into the vapor transport system an additive including a polar solvent and corrosion inhibitor wherein: the vapor transport system is substantially water free; the vapor transport system is used to transport acidic materials; the additive is a liquid at vapor transport system operating conditions; and the additive is stable at the vapor transport system operating conditions.

FUNCTIONAL FLUID COMPOSITIONS CONTAINING EROSION INHIBITORS

A functional fluid composition containing a fluid base stock (e.g., a phosphate ester fluid base stock) as a major component, and an erosion inhibitor mixture as a minor component. The erosion inhibitor mixture contains at least a first erosion inhibitor (e.g., a perhalometallate or perhalometalloidate salt) and a second erosion inhibitor (e.g., an alkali metal salt of perfluoroalkyl sulfonic acid). Erosion inhibition of the functional fluid composition is improved as compared to erosion inhibition achieved using singly the first erosion inhibitor or the second erosion inhibitor, as measured by one or more of ASTM D2624, ASTM D974, ASTM D130 and ASTM D6304. A method for operating and lubricating a hydraulic system by utilizing as a hydraulic fluid, the functional fluid composition. A method for identifying erosion inhibition effectiveness of the functional fluid. The functional fluids are useful as aircraft hydraulic fluids. 2. The functional fluid composition of wherein the one or more phosphate ester fluid base stocks comprise trialkyl phosphate claim 1 , dialkyl aryl phosphate claim 1 , alkyl diaryl phosphate claim 1 , triaryl phosphate claim 1 , or mixtures thereof.3. The functional fluid composition of wherein the one or more phosphate ester fluid base stocks comprise tri-n-butyl phosphate claim 1 , tri-isobutyl phosphate claim 1 , n-butyl di-isobutyl phosphate claim 1 , di-isobutyl n-butyl phosphate claim 1 , n-butyl diphenyl phosphate claim 1 , isobutyl diphenyl phosphate claim 1 , di-n-butyl phenyl phosphate claim 1 , di-isobutyl phenyl phosphate claim 1 , tri-n-pentyl phosphate claim 1 , tri-isopentyl phosphate claim 1 , triphenyl phosphate claim 1 , isopropylated triphenyl phosphates claim 1 , butylated triphenyl phosphates claim 1 , or mixtures thereof.4. The functional fluid composition of wherein claim 1 , in the one or more phosphate ester fluid base stocks claim 1 , R claim 1 , Rand Rare independently a substituted or unsubstituted alkyl group having ...

CMP SLURRY COMPOSITION FOR METAL WIRING AND POLISHING METHOD USING THE SAME

A CMP slurry composition for polishing a metal wire and a polishing method, the CMP slurry composition including polishing particles; an oxidant; a complexing agent; a corrosion inhibitor; and deionized water, wherein the corrosion inhibitor includes an inorganic nitrite or ammonium nitrate. 1. A CMP slurry composition for polishing a metal wire , the CMP slurry composition comprising:polishing particles;an oxidant;a complexing agent;a corrosion inhibitor; anddeionized water,wherein the corrosion inhibitor includes an inorganic nitrite or ammonium nitrate.2. The CMP slurry composition as claimed in claim 1 , wherein the inorganic nitrite includes sodium nitrite claim 1 , potassium nitrite claim 1 , ammonium nitrite claim 1 , or a combination thereof.3. The CMP slurry composition as claimed in claim 1 , wherein the inorganic nitrite or ammonium nitrate is present in an amount of 0.001 wt % to 10 wt % claim 1 , based on a total weight of the CMP slurry composition.4. The CMP slurry composition as claimed in claim 1 , further comprising a surfactant claim 1 , a polymeric compound claim 1 , a dispersant claim 1 , a pH regulator claim 1 , or a combination thereof.5. The CMP slurry composition as claimed in claim 1 , wherein the CMP slurry composition includes:about 0.01 wt % to about 20 wt % of the polishing particles;about 0.01 wt % to about 10 wt % of the oxidant;about 0.01 wt % to about 20 wt % of the complexing agent; andabout 0.001 wt % to about 10 wt % of the corrosion inhibitor, all wt % being based on a total weight of the CMP slurry composition.6. The CMP slurry composition as claimed in claim 1 , wherein the CMP slurry composition has a static etch rate of about 50 Å/min or less claim 1 , as measured for a cobalt film.7. The CMP slurry composition as claimed in claim 1 , wherein the CMP slurry composition has a static etch rate of about 30 Å/min or less claim 1 , as measured for a copper film.8. The CMP slurry composition as claimed in claim 1 , wherein the CMP ...

METHODS OF PROTECTING METAL SURFACE DURING EXPOSURE TO FLUORIDE ION-CONTAINING ACIDIC FLUIDS

A method of reducing corrosion of a metal surface comprises contacting a fluoride ion-containing acidic fluid with a corrosion inhibitor composition before the fluoride ion-containing acidic fluid contacts the metal surface, the corrosion inhibitor composition comprising a zirconium compound, an antimony compound, or a combination comprising at least one of the foregoing; and exposing the metal surface to the fluoride ion-containing acidic fluid. 1. A method of reducing corrosion of a metal surface , the method comprising:contacting a fluoride ion-containing acidic fluid with a corrosion inhibitor composition before the fluoride ion-containing acidic fluid contacts the metal surface, the corrosion inhibitor composition comprising a zirconium compound, an antimony compound, or a combination comprising at least one of the foregoing; andexposing the metal surface to the fluoride ion-containing acidic fluid.2. The method of claim 1 , wherein the metal surface comprises a titanium alloy.3. The method of claim 1 , wherein the fluoride ion-containing acidic fluid is an at least partially spent downhole treatment fluid.4. The method of claim 1 , wherein:the zirconium compound comprises one or more of the following: zirconium lactate; sodium zirconium lactate; zirconium sulfate; zirconium tetrachloride; zirconium carbonate; zirconium acetate; zirconium orthosulfate; zirconium oxychloride; zirconium ammonium carbonate; or zirconium acetylacetonate, andthe zirconium compound is present in such an amount that the inhibitor composition comprises about 2 wt % to about 10 wt % of zirconium based on the total weight of the inhibitor composition.5. (canceled)6. The method of claim 1 , wherein the inhibitor composition is added in an amount of about 5 to about 40 vol % based on the sum of the volumes of the inhibitor composition and the fluoride ion-containing acidic fluid.7. A method of treating a subterranean formation claim 1 , the method comprising:injecting into the subterranean ...

Novel Modified Acid Compositions as Alternatives to Conventional Acids in the Oil and Gas Industry

An aqueous modified acid composition for use in oil industry activities, said composition comprising: an amino acid, an alkanolamine and strong acid wherein the mineral acid:alkanolamine/amino acid are present in a molar ratio of not more than 15:1, preferably not more than 10:1; it can also further comprise a metal iodide or iodate. Said composition demonstrates advantages over known conventional acids and modified acids.

Corrosion Inhibitor Compositions For Acidizing Treatments

A corrosion inhibitor composition and a method of inhibiting corrosion on a surface are disclosed. The corrosion inhibitor composition includes at least one nitrogen containing heteroaromatic compound and at least one haloalkynyl carbamate compound. The corrosion inhibitor composition may be utilized with acidizing treatments for wells, in particular for the production of oil, gas, and/or water.

SQUEEZE TREATMENT FOR IN SITU SCAVENGING OF HYDROGEN SULFIDE

A method of performing a squeeze treatment comprises pumping a treatment fluid under pressure through a wellbore into a subterranean formation, wherein the treatment fluid includes a hydrogen sulfide scavenging compound that adsorbs onto the subterranean formation in a region around the wellbore. Production fluids are then allowed to flow from the subterranean formation into the wellbore, wherein the production fluids contact the adsorbed hydrogen sulfide scavenging compound as the production fluids flow through the region around the wellbore, and wherein the production fluids contain hydrogen sulfide that reacts with the hydrogen sulfide scavenging compound to reduce an amount of hydrogen sulfide in the production fluids before the production fluids flow into the wellbore. 1. A squeeze treatment method for reducing the amount of hydrogen sulfide in a hydrocarbon-containing fluid , comprising:pumping a treatment fluid under pressure through a wellbore into a subterranean formation and maintaining the treatment fluid in the region around the wellbore for a predetermined period of time, wherein the treatment fluid includes a hydrogen sulfide scavenging compound that adsorbs onto the subterranean formation in a region around the wellbore; andflowing production fluids from the subterranean formation into the wellbore, wherein the production fluids contact the adsorbed hydrogen sulfide scavenging compound as the production fluids flow through the region around the wellbore, and wherein the production fluids contain hydrogen sulfide that reacts with the hydrogen sulfide scavenging compound to reduce an amount of hydrogen sulfide in the production fluids before the production fluids flow into the wellbore, andwherein the hydrogen sulfide scavenging compound is an alpha-hydroxy alkyl ester functionalized with a phosphate group, phosphonate group, sulfate group, sulfonate group, or hydroxyl group; or an alpha-hydroxy alkyl ether functionalized with a phosphate group, ...

Compositions For Use In Corrosion Protection

The invention relates to compositions, methods and preparation of such compositions to protect metals from corrosion, especially acid corrosion. The compositions of this invention may be added to acids to protect metals from their corrosive influence, particularly at elevated temperatures. These compositions are of particular utility in the oil and gas (petroleum) industry. Also disclosed are “corrosion inhibition intensifiers” to enhance the corrosion inhibition properties of other corrosion inhibitors. Formulations which control ferric ions in acidic solutions are also disclosed. These may be combined with inhibited acids and some compositions provide both corrosion inhibition and ferric ion control. 126-. (canceled)27. A method for providing an acid solution which contacts a metal at least one of (i) reduction in corrosion of said metal by said acid solution and (ii) reduction in the formation of ferric ions in said solution , comprising adding to the said acid solution an additive comprising surface modified particles of a low water solubility material wherein the surfaces of the said particles are modified by a surface functionalization agent with a molecular weight of at least 60.28. The method of wherein the low water solubility material comprises a cuprous compound.29. The method of claim 27 , wherein the surface functionalization agent is selected from at least one of PVP claim 27 , PVP copolymer claim 27 , a surfactant claim 27 , an organic acid and a salt of an organic acid.30. The method of where the said additive further comprises a material selected from at least any one of:(a) a monomeric material;(b) a nitrogen containing material;(c) a cationic surfactant and;(d) a phenylpropanoid.312. The method of wherein the said additive comprises at least one additional metal compound selected from any of (a) a copper compound which is different from the cuprous compound in claim and (b) compounds of a metal selected from Li claim 28 , Na claim 28 , K claim 28 ...

IDENTIFICATION AND CHARACTERIZATION OF NOVEL CORROSION INHIBITOR MOLECULES

Methods of employing corrosion inhibitors with oxidizing and/or non-oxidizing biocides, such as peroxycarboxylic acids, to provide corrosion protected compositions are disclosed. Various corrosion inhibitors further provide biocidal efficacy in addition to the corrosion protection providing further benefits for application of use. Methods of employing corrosion protected biocide compositions, such as peroxycarboxylic acid compositions, for corrosion protection are particularly well suited for treating fluids intended to flow through pipes, namely in the energy industry, water and paper industries, etc. Methods providing suitable corrosion protection in comparison to untreated systems and corrosion protected systems using conventional corrosion inhibitors, such as quaternary amines and imidazolines commonly used in the industry, are disclosed. 1. A corrosion inhibited aqueous composition comprising:from about 0.5 ppm to about 50,000 ppm of an oxidizing or non-oxidizing biocide; andfrom about 1 ppm to about 1,000 ppm of a corrosion inhibitor is an alkyl pyridinium salt, cetyl pyridinium salt, polyesteramide,dimethicone, imidazole derivative, sulphonamide or combination thereof,wherein the composition has a pH below 12.0, and wherein wherein the corrosion inhibited aqueous composition provides a treated surface or system with a corrosion rate of less than about 4 mils per year (MPY).2. The composition of claim 1 , wherein the non-oxidizing biocide comprises a quaternary phosphonium salt claim 1 , an aldehyde claim 1 , tetrakis(hydroxymethyl)phosphonium sulfate (THPS) claim 1 , gluteraldehyde or combinations thereof.3. The composition of claim 1 , comprising from about 1 to about 99 wt-% non-oxidizing biocide or oxidizing biocide and from about 1 to about 99 wt-% corrosion inhibitor.4. The composition of claim 1 , wherein the composition is shelf-stable for a period of at least 1 month.5. The composition of claim 1 , wherein the composition is shelf-stable for a period ...

Novel Modified Acid Compositions as Alternatives to Conventional Acids in the Oil and Gas Industry

An aqueous modified acid composition for industrial activities, said composition comprising: an alkanolamine and strong acid in a molar ratio of not less than 1:15, preferably not less than 1:10; it can also further comprise a metal iodide or iodate. Said composition demonstrates advantages over known conventional acids and modified acids. 1. An aqueous modified acid composition comprising:a mineral acid and an alkanolamine in a molar ratio of not more than 15:1.2. A aqueous modified acid composition comprising:hydrochloric acid and an alkanolamine in a molar ratio of not more than 15:1.3. The aqueous modified acid composition according to claim 2 , wherein the hydrochloric acid and alkanolamine are present in a molar ratio of not more than 10:1.4. The aqueous modified acid composition according to claim 2 , wherein the hydrochloric acid and alkanolamine are present in a molar ratio of not more than 7.0:1.5. The aqueous modified acid composition according to claim 2 , wherein the hydrochloric acid and alkanolamine are present in a molar ratio of not more than 4.1:1.6. The aqueous modified acid composition according to claim 2 , wherein the hydrochloric acid and alkanolamine are present in a molar ratio of not less than 3:1.7. The aqueous modified acid composition according to claim 2 , wherein the alkanolamine is selected from the group consisting of: monoethanolamine; diethanolamine; triethanolamine and combinations thereof.8. The aqueous modified acid composition according to claim 2 , wherein the alkanolamine is monoethanolamine.9. The aqueous modified acid composition according to claim 2 , wherein the alkanolamine is diethanolamine.10. The aqueous modified acid composition according to claim 2 , further comprising a metal iodide or iodate.11. The composition according to claim 1 , wherein the mineral acid is selected from the group consisting of: HCl claim 1 , nitric acid claim 1 , sulfuric acid claim 1 , sulfonic acid claim 1 , phosphoric acid claim 1 , and ...

METHODS FOR DIAGNOSING, MONITORING AND MITIGATING MICROBIOLOGICALLY INFLUENCED CORROSION

Provided are methods for diagnosing, monitoring and mitigating microbiologically influenced corrosion (MIC). The methods employ steps to determine the nature and concentration of biological signatures, formed through metabolism of microorganisms, and correlating the biological signatures with MIC. Based on such analyses, appropriate MIC mitigation strategies may be implemented so as to efficiently target MIC at sites of interest. The methods advantageously allow selection of appropriate MIC mitigation treatments that correspond to the level of severity of the MIC and based on historical data correlating particular biological signatures with particular MIC risk. 1. A method for diagnosing or monitoring one or more types of microbiologically induced corrosion (MIC) at a site of interest comprising the steps of:(a) determining the nature and/or concentration of one or more biological signatures at, or in close proximity to, the site of interest;(b) correlating the nature and/or concentration of the one or more biological signatures with the one or more types of MIC.2. A method according to claim 1 , wherein the correlation comprises comparing the one or more determined biological signatures with one or more biological signatures in a reference database claim 1 , said reference database linking the nature and concentration of the determined biological signatures to one or more types of MIC.3. A method according to claim 1 , wherein the method further comprises the step of collecting one or more samples at claim 1 , or in close proximity to claim 1 , the site of interest claim 1 , and performing the determination of step (a) on the one or more samples.4. A method according to claim 3 , wherein the method further comprises the step of extracting one or more extracellular and/or intracellular biological signatures from the one or more samples.5. A method according to claim 1 , wherein the biological signatures are selected from the group consisting of proteins claim 1 , ...

Novel Modified Acid Compositions as Alternatives to Conventional Acids in the Oil and Gas Industry

An aqueous modified acid composition for industrial activities, said composition comprising: an alkanolamine and strong acid in a molar ratio of not less than 1:15, preferably not less than 1:10; it can also further comprise a metal iodide or iodate. Said composition demonstrates advantages over known conventional acids and modified acids. 1. A method of use of a modified acid composition comprising a mineral acid and an alkanolamine in a molar ratio ranging from 3:1 to not more than 15:1 and having a pH of less than 1 in the construction industry said use being selected from the group consisting of: etching concrete and cleaning concrete from equipment and buildings.2. The method according to claim 1 , wherein the mineral acid is selected from the group consisting of: HCl claim 1 , nitric acid claim 1 , sulfuric acid claim 1 , sulfonic acid claim 1 , phosphoric acid claim 1 , and combinations thereof.3. The method according to claim 1 , wherein the mineral acid is hydrochloric acid.4. The method according to claim 1 , wherein the hydrochloric acid and alkanolamine are present in a molar ratio of not more than 10:1.5. The method according to claim 1 , wherein the hydrochloric acid and alkanolamine are present in a molar ratio of not more than 7.0:1.6. The method according to claim 1 , wherein the hydrochloric acid and alkanolamine are present in a molar ratio of not more than 4.1:1.7. The method according to claim 1 , wherein the alkanolamine is selected from the group consisting of: monoethanolamine; diethanolamine; triethanolamine and combinations thereof.8. The method according to claim 1 , wherein the alkanolamine is monoethanolamine.9. The method according to claim 1 , wherein the alkanolamine is diethanolamine.10. The method according to claim 1 , wherein modified acid compositions further comprises a corrosion inhibitor comprising a α claim 1 ,β-unsaturated aldehyde with no methyl group at the alpha position.11. A method of use of a modified acid composition ...

MITIGATION OF CORROSION IN GEOTHERMAL SYSTEMS

Corrosion inhibitor blends including one or more ether compounds, one or more quaternary ammonium compounds, and one or more fatty acid amine condensates are disclosed. The corrosion inhibitor blends can be used in methods of inhibiting corrosion of a metallic surface in a geothermal process. In one method, an effective amount of a corrosion inhibitor blend may be added to a production well in a geothermal process. In another method, an effective amount of a corrosion inhibitor blend may be added to a geothermal medium, which could be, for example, steam or liquid brine. 1. A method of inhibiting corrosion of a metallic surface in a geothermal process comprising:adding an effective amount of a corrosion inhibitor blend to a production well in a geothermal process, wherein the corrosion inhibitor blend comprises an ether compound, a quaternary ammonium compound, and a fatty acid amine condensate.2. The method of claim 1 , wherein a second effective amount of the corrosion inhibitor blend is added to at least one additional location selected from the group consisting of a high pressure steam separator claim 1 , a standard pressure crystallizer claim 1 , a low pressure steam separator claim 1 , a condenser claim 1 , a clarifier tank claim 1 , an injection well claim 1 , and a pipeline.3. The method of claim 1 , wherein the ether compound comprises an alcohol functional group.4. The method of claim 1 , wherein the ether compound is selected from the group consisting of butoxyethanol claim 1 , ethylene glycol monopropyl ether claim 1 , ethylene glycol monobutyl ether claim 1 , and any combination thereof.5. The method of claim 1 , wherein the corrosion inhibitor blend comprises about 10% to about 30% claim 1 , by weight claim 1 , of the ether compound.6. The method of claim 1 , wherein the quaternary ammonium compound is selected from the group consisting of benzyldimethyldodecylammonium chloride claim 1 , benzyldimethyltetradecylammonium chloride claim 1 , ...

Corrosion Inhibition of HCL Treatment Fluids with Environmentally Compatible Solvent

A method of treating in a subterranean formation including placing a corrosion inhibitor composition into a subterranean formation, where the formation includes an acidic environment having a pH of about 5 or below, where the composition includes: an organic solvent comprising an alcohol with a flash point of at least about 75° C.; a nitrogen containing compound; an aqueous acid solution comprising HCl; and contacting a metal surface with the corrosion inhibitor composition. A corrosion inhibitor composition includes an organic solvent comprising an alcohol with a flash point of at least about 75° C.; a nitrogen containing compound; and an aqueous acid solution comprising HCl. 1. A corrosion inhibitor composition comprising:an organic solvent comprising an alcohol with a flash point of at least about 75° C.; the product of a reaction between at least one aldehyde and at least one amide that is not formamide or a formamide derivative;', 'a quaternary nitrogen containing compound; and', 'combinations thereof; and, 'a nitrogen containing compound, wherein the nitrogen containing compound includes at least one ofan aqueous acid solution comprising HCl.2. The composition of claim 1 , wherein the alcohol comprises tetrahydrofurfuryl alcohol (THFA).3. The composition of claim 1 , wherein the organic solvent is present in an amount of about 5% to about 100% by weight of the aqueous acid solution.4. The composition of claim 1 , wherein the at least one aldehyde comprises at least one aldehyde selected from the group consisting of 2-hydroxynapthaldehyde claim 1 , 7-phenyl-2 claim 1 ,4 claim 1 ,6-heptatrienal claim 1 , crotonaldehyde claim 1 , 2-hexenal claim 1 , 2-heptenal claim 1 , 2-octenal; 2-nonenal claim 1 , 2-decenal claim 1 , 2-undecenal claim 1 , 2-dodecenal claim 1 , 2 claim 1 ,4-hexadienal claim 1 , 2 claim 1 ,4-heptadienal claim 1 , 2 claim 1 ,4-octadienal claim 1 , 2 claim 1 ,4-nonadienal claim 1 , 2 claim 1 ,4-decadienal claim 1 , 2 claim 1 ,4-undecadienal claim ...

CLEANING LIQUID, ANTICORROSION AGENT, AND METHOD FOR MANUFACTURING THE SAME

A cleaning liquid and an anticorrosion agent having an excellent corrosion inhibition function, and a method for manufacturing the same. The cleaning liquid contains alkanol hydroxyamine represented by general formula (1), alkanolamine represented by general formula (2), a solvent, and a basic compound other than the alkanol hydroxyamine and the alkanolamine or an acidic compound. In the general formula (1), Rand Reach independently represents a C1-C10 alkyl group having one to three hydroxy groups, or a hydrogen atom, Rand Rare not simultaneously a hydrogen atom, and Rand Rare not simultaneously a hydrogen atom. 2. The cleaning liquid according to claim 1 , wherein Rin the general formula (1) and Rin the general formula (2) are the same group claim 1 , and Rin the general formula (1) and Rin the general formula (2) are the same group.3. The cleaning liquid according to claim 1 , wherein Rand Rin the general formula (1) are the same group claim 1 , and Rand Rin the general formula (2) are the same group.6. A method for cleaning a substrate comprising using the cleaning liquid according to .7. A method for cleaning a substrate comprising using the anticorrosion agent according to .8. A method for cleaning a substrate comprising using the anticorrosion agent manufactured by the method according to .7. The method according to claim 6 , wherein the cleaning of a substrate is cleaning of a substrate in lithography.8. A method for manufacturing a semiconductor comprising a substrate claim 6 , the method comprising cleaning the substrate using the method according to .9. A method for inhibiting corrosion of easily corrodible metal claim 1 , comprising bringing the easily corrodible metal into contact with the cleaning liquid according to .10. A method for inhibiting corrosion of easily corrodible metal claim 4 , comprising bringing the easily corrodible metal into contact with the the anticorrosion agent according to .11. A method for inhibiting corrosion of easily ...

MULTIPLE HYDROPHILIC HEAD CORROSION INHIBITORS

Compounds comprising multiple hydrophilic heads and a lipophilic tail may be contacted with a metal or other surface so as to adhere to the surface and inhibit corrosion, among other things. Suitable hydrophilic heads may include quaternary ammonium cation moieties, phosphonium cation moieties, and combinations thereof. Such corrosion-inhibiting compounds may be introduced into a wellbore penetrating at least a portion of a subterranean formation, for instance in oil and/or gas recovery operations and the like, whereupon the compound may adhere to a metal or other surface downhole so as to inhibit corrosion of the surface. These compounds may be employed in various other environments, such as any metal or other surface that may be exposed to corrosive conditions. 2. The method of further comprising increasing the hydrophobicity of the metal surface.3. The method of wherein the corrosion-inhibiting compound is present in a concentration of from 1 ppm to 100 ppm.4. The method of wherein the corrosion-inhibiting compound comprises the reaction product of a reaction process that comprises (i) a first reaction between a long-chain primary amine and an epihalohydrin claim 1 , and (ii) a second reaction between the product of the first reaction with an amine selected from the group consisting of a secondary amine claim 1 , a tertiary amine claim 1 , and any combination thereof.5. The method of wherein the reaction process occurs at a temperature in a range of from 20° C. to 80° C.6. The method of wherein J is hydrogen.7. The method of wherein J is a Cto Chydrocarbon chain.8. The method of wherein X is a halide.9. The method of wherein X″ is a halide.11. The method of further comprising increasing the hydrophobicity of the metal surface.12. The method of wherein the corrosion-inhibiting compound is present in a concentration of from 1 ppm to 100 ppm.13. The method of wherein the corrosion-inhibiting compound comprises the reaction product of a reaction process that ...

EMULSIFER WITH HIGH TEMPERATURE RESISTANCE, LOW VISCOSITY AND LOW CORROSIVENESS, AND EMULSIFIED ACID SYSTEM COMPRISING SAME

An emulsifier with high temperature resistance, low viscosity and low corrosiveness, and an emulsified acid system comprising the same. The emulsifier includes a viscoelastic surfactant, which is prepared by a quaterization of fatty acid acyl propyl dimethylamine and a halogenated compound; by a quaterization of a long-chain halogenated hydrocarbon and a tertiary amine compound; or by a reaction of the fatty acid acyl propyl dimethylamine with a linking group synthesized by epichlorohydrin and an alkylamine compound. 1. An emulsifier , comprising:a viscoelastic surfactant;wherein the viscoelastic surfactant is prepared by a quaterization of fatty acid acyl propyl dimethylamine and a halogenated compound;by a quaterization of a linear halogenated hydrocarbon and a tertiary amine compound; orby a reaction of the fatty acid acyl propyl dimethylamine with a linking group formed by reaction of epichlorohydrin and an alkylamine compound; andthe alkylamine compound is hutanolamine, 1,6-butanediamine or diallylamine.2. The emulsifier of claim 1 , wherein the viscoelastic surfactant comprises at least one hydrophobic chain.3. The emulsifier of claim 1 , wherein the viscoelastic surfactant is cationic or zwitterionic.4. The emulsifier of claim 1 , wherein a fatty acid chain in the fatty acid acyl propyl dimethylamine is derived from erucic acid claim 1 , docosanoic acid claim 1 , oleic acid claim 1 , stearic acid claim 1 , arachidic acid claim 1 , tetracosenic acid claim 1 , heneicosanoic acid claim 1 , heptadecanoic acid claim 1 , hexadecanoic acid claim 1 , pentadecanoic acid claim 1 , tridecanoic acid claim 1 , dodecanoic acid or undecanoic acid.5. The emulsifier of claim 1 , wherein the linear halogenated hydrocarbon is halogenated octadecane claim 1 , halogenated hexadecane claim 1 , halogenated tetradecane claim 1 , halogenated dodecane claim 1 , halogenated undecane claim 1 , or a derivative thereof.6. An emulsified acid system claim 1 , comprising: 5-10 parts by ...

Novel Modified Acid Compositions as Alternatives to Conventional Acids in the Oil and Gas Industry

An aqueous modified acid composition for use in oil industry activities, said composition comprising: an amino acid, an alkanolamine and strong acid wherein the mineral acid:alkanolamine/amino acid are present in a molar ratio of not more than 15:1, preferably not more than 10:1; it can also further comprise a metal iodide or iodate. Said composition demonstrates advantages over known conventional acids and modified acids. 2. An aqueous modified acid composition according to claim 1 , wherein the amino acid:alkanolamine proportion ranges from 1%:99% to 99%:1%.3. An aqueous modified acid composition according to claim 1 , wherein the amino acid:alkanolamine proportion ranges from 20%:80% to 80%:20%.4. An aqueous modified acid composition according to claim 1 , wherein the amino acid:alkanolamine proportion ranges from 30%:70% to 70%:30%.5. An aqueous modified acid composition according to claim 1 , wherein the amino acid:alkanolamine proportion is 50%:50%.6. The aqueous modified acid composition according to claim 1 , wherein the mineral acid:alkanolamine/amino acid are present in a molar ratio of not more than 10:1.7. The aqueous modified acid composition according to claim 1 , wherein the mineral acid:alkanolamine/amino acid are present in a molar ratio of not more than 7.0:1.8. The aqueous modified acid composition according to claim 1 , wherein the mineral acid:alkanolamine/amino acid are present in a molar ratio of not more than 4:1.9. The aqueous modified acid composition according to claim 1 , wherein the mineral acid:alkanolamine/amino acid are present in a molar ratio of not more than 3:1.10. The aqueous modified acid composition according to claim 1 , wherein the mineral acid:alkanolamine/amino acid are present in a molar ratio ranging from 3:1 to 12:1.11. The aqueous modified acid composition according to claim 1 , wherein the mineral acid:alkanolamine/amino acid are present in a molar ratio ranging from 5:1 to 10:1.12. The aqueous modified acid ...

BINDER COMPOSITION, A METHOD OF MANUFACTURING A CORROSION-RESISTANT SACRIFICIAL PROTECTIVE COATING USING SAID COMPOSITION, AND A SUPPORT COATED WITH SUCH A COATING

The present disclosure provides an aqueous binder composition for forming a sacrificial corrosion-protective coating, said composition being free of chromates and also preferably free of borates and molybdates. Said binder composition advantageously has a pH of less than 6 and comprises a binder, particles of at least one metal oxide and at least one metallic phosphate, said binder comprising a hydrolyzed organosilane oligomer. In addition, the proportion by weight of said particles of at least one metal oxide relative to the total dry weight of said binder composition is greater than or equal to 75%. 1. An aqueous binder composition for manufacturing a sacrificial corrosion-protective coating , said composition being free of chromates and also preferably free of borates and molybdates , wherein said binder composition has a pH of less than 6 and comprises a binder , particles of at least one metal oxide and at least one metallic phosphate , said binder comprising a hydrolyzed organosilane oligomer , and wherein the proportion by weight of said particles of at least one metal oxide relative to the total dry weight of said aqueous binder composition is greater than or equal to 75%.2. The binder composition according to claim 1 , wherein said at least one metallic phosphate is selected from the group constituted by zinc phosphate (Zn(PO)) claim 1 , manganese phosphate (Mn(PO)) claim 1 , aluminum phosphate (AlPO) claim 1 , aluminum tripolyphosphate (Al(PO)) claim 1 , aluminum and zinc phosphate claim 1 , and mixtures thereof.3. The binder composition according to claim 1 , wherein said at least one metal oxide particle is selected from the group constituted by aluminum oxide claim 1 , zinc oxide claim 1 , a mixed zinc-magnesium oxide claim 1 , a mixed aluminum-zinc oxide claim 1 , and mixtures thereof.4. The binder composition according to claim 1 , wherein the proportion by weight of particles of at least one metal oxide is greater than or equal to 80% relative to the ...

Novel Downhole Methods And Compositions Used in Such

A novel method for the placement of spearhead acid and stimulation of a hydrocarbon-bearing formation, said method comprising the steps of 2. The method according to where the acid is selected from the group consisting of: mineral acids; organic acids; modified acids; synthetic acids; and combinations thereof.3. The method according to where the acid is selected from the group consisting of: HCl; methanesulfonic acid; sulfamic acid; toluenesulfonic acid; HCl-alkanolamine; HCl-amino acid claim 1 , such as lysine; etc.4. The method according to where the Group A compound is selected from the group consisting of: 'cinnamaldehyde, €-cinnamaldehyde, crotonaldehyde, acrolein, methacrolein, leafaldehyde, citral, furfural, €-2-methyl-2-butenal, 3-methyl-2-butenal, €-2-ethyl-2-butenal, €-2-ethyl-2-hexenal, 2-hexenal, 2-heptenal, 2-octenal, 2-nonenal, 2-decenal, 2-undecenal, 2-dodecenal, 2,4-hexadienal, 2,4-heptadienal, 2,4-octadienal 2,4-nonadienal 2,4-decadienal 2,4-undecadienal 2,4-dodecadienal 2,6-dodecadienal, 1-formyl-[2-(2-methylvinyl)]-2-n-octylethylene, dicinnamaldehyde, p-hydroxycinnamaldehyde, p-methylcinnamaldehyde, p-ethylcinnamaldehyde, p-methoxycinnamaldehyde, p-dimethylaminocinnamaldehyde, p-diethylaminocinnamaldehyde, p-nitrocinnamaldehyde, o-nitrocinnamaldehyde, o-allyloxycinnamaldehyde, 4-(3-propenal)cinnamaldehyde, p-sodium sulfocinnamaldehyde, p-trimethylammoniumcinnamaldehyde sulfate, p-trimethylammoniumcinnamaldehyde o-methylsulfate, p-thiocyanocinnamaldehyde, p-(S-acetyl)thiocinnamaldehyde, p-(S—N,N-dimethylcarbamoylthio)cinnamaldehyde, p-chlorocinnamaldehyde, 5-phenyl-2,4-pentadienal, 5-(p-methoxyphenyl)-2,4-pentadienal, 2,3-diphenylacrolein, 3,3-diphenylacrolein, α-methylcinnamaldehyde, β-methylcinnamaldehyde, α-chlorocinnamaldehyde, α-bromocinnamaldehyde, α-butylcinnamaldehyde, α-amylcinnamaldehyde, α-hexylcinnamaldehyde, 2-(p-methylbenzylidine)decanal, α-bromo-p-cyanocinnamaldehyde, a-ethyl-p-methylcinnamaldehyde, p-methyl-α-pentylcinnamaldehyde, 3 ...

Sealing Anodized Aluminum Using a Low-Temperature Nickel-Free Process

The inventive two-step process operates at low temperature, without any toxic heavy metals, to provide excellent sealing on anodized aluminum substrates, especially those aluminum substrates comprising silicon. The first step of the process seals the anodized surface and the second step passivates the anodized surface. The process allows for corrosion resistance in anodized aluminum and anodized aluminum alloys to be achieved that is comparable to traditional nickel based sealants, without the toxicity of nickel. The process additionally does not require any excessive temperatures, as required by hot water sealing processes. The composition used for the sealing step comprises soluble lithium ions, fluoride ions, and preferably, a complexing agent comprising phosphines, phosphonates and/or polymers of acrylic acid. The composition used for the passivation step comprises metal ions and preferably a complexing agent comprising phosphines, phosphonates and/or polymers of acrylic acid. 1. A method for sealing an anodized aluminum or anodized aluminum alloy surface comprising:(i) contacting the anodized surface with a sealing composition comprising a source of lithium ions, a source of fluoride ions, and a complexing agent, followed by;(ii) contacting the anodized surface with a passivation composition wherein the passivation composition comprises a source of metal ions and a complexing agent;wherein the surface of the anodized aluminum or anodized aluminum alloy becomes corrosion resistant.2. The method according to claim 1 , wherein the complexing agent in the sealing composition is selected from the group consisting of phosphines claim 1 , phosphonates claim 1 , acrylic acid polymers claim 1 , and mixtures thereof.3. The method according to claim 2 , wherein the complexing agent is in the sealing composition in a concentration from 50 ppm to 500 ppm.4. The method according to claim 1 , wherein the complexing agent in the passivation composition is selected from the ...

PROTEINS FOR REMOVING SULFUROUS COMPOUNDS AND/OR ACIDIC COMPOUNDS IN DOWNHOLE FLUIDS

Proteins with antibacterial properties may be used in additive compositions, fluid compositions, and methods for decreasing or removing sulfur-containing compounds and/or acid-containing compounds from recovered downhole fluids and/or the subterranean reservoir wellbore from which the downhole fluid was recovered. The fluid composition may include at least protein and a base fluid. The protein(s) may be or include a labiase, a lysozyme, a lysostaphin, a hexose oxidase, a cecropin, a thermolysin, a serine protease, a cysteine protease, and combinations thereof. The base fluid may be or include a drilling fluid, a servicing fluid, a production fluid, a completion fluid, an injection fluid, a refinery fluids, and combinations thereof. 16-. (canceled)7. A fluid composition comprising:a base fluid selected from the group consisting of drilling fluids, servicing fluids, production fluids, completion fluids, injection fluids, refinery fluids, and combinations thereof; andat least one protein selected from the group consisting of a labiase, a lysozyme, a lysostaphin, a hexose oxidase, a cecropin, a thermolysin, a serine protease, a cysteine protease, and combinations thereof.8. The fluid composition of claim 7 , wherein the concentration of the at least one protein within the fluid composition ranges from 0.01 mg/mL to 100 mg/mL based on the total amount of the base fluid.9. The fluid composition of claim 7 , wherein the fluid composition comprises at least two proteins as a blend.10. The fluid composition of claim 9 , wherein the blend comprises each protein in an amount ranging from 0.1 mg/mL to 1 mg/mL based on the total amount of the fluid composition.11. The fluid composition of claim 7 , wherein the fluid composition comprises at least one sulfur-containing compound in a decreased amount as compared to an otherwise identical fluid composition absent the at least one protein.12. The fluid composition of claim 7 , wherein the fluid composition comprises at least one ...

Corrosion Inhibitors for Oilfield Applications

A corrosion inhibitor active and method for reducing corrosion of a metal surface in contact with a corrosive environment is disclosed. The corrosion inhibitor active is an organic sulfonated compound that is derived from the sulfonation of one or more carboxylic acids, internal olefins, or alpha-olefins having a carbon chain length of 15 to 26 carbon atoms. The method of reducing corrosion includes contacting the metal surface with an effective amount of the corrosion inhibitor active. The corrosion inhibitor active is useful in high temperature corrosive environments, such as those found in oil and gas operations. 1. A method of treating a metal surface in a corrosive environment to decrease corrosion of the metal surface , the method comprising:introducing a sulfonate corrosion inhibitor active into a corrosive environment in contact with the metal surface in an amount effective to decrease corrosion of the metal surface, wherein the sulfonate corrosion inhibitor active is selected from internal olefin sulfonates having a carbon chain length of 15 to 26 carbon atoms, alpha sulfonated fatty acid esters having a carbon chain length of 15 to 26 carbon atoms, alpha-olefin sulfonates having a carbon chain length of 15 to 26 carbon atoms, and sulfonated fatty acid salts having a carbon chain length of 15 to 26 carbon atoms.2. The method of claim 1 , wherein the effective amount of the sulfonate corrosion inhibitor additive is from about 10 ppm to about 200 ppm claim 1 , based on a total volume of the corrosive environment.3. The method of claim 1 , wherein the corrosive environment is at a temperature of at least 250° F. (121° C.).4. The method of claim 3 , wherein the corrosive environment is at a temperature of about 250° F. (121° C.) to about 400° F. (204° C.).5. The method of claim 1 , wherein the corrosive environment is part of an oilfield operation.6. The method of claim 5 , wherein the corrosive environment is part of an offshore well.7. The method of claim 1 , ...

Inhibitors of metal corrosion

The present invention relates to a composition of at least one sulfonic acid in combination with an effective amount of at least one nitrosyl compound, acting as inhibitor of corrosion of metals by said at least one sulfonic acid.

Corrosion inhibitor, well, pipeline, and method for forming anticorrosion film

This corrosion inhibitor can satisfactorily prevent corrosion of the inner surface of a well or pipeline, and contains an inhibitor (A) having a hydrophobic group and a polar group capable of donating an electron pair to a metal surface, an aromatic solvent (B), and hydrophobic nanoparticles (C).

AQUEOUS SOLUTION AND METHOD FOR USE THEREOF

An aqueous solution is disclosed including water, an acid, a nitrogen-containing compound, and a functionalizing agent (FA), which can be a ketone, diketone, aldehyde, dialdehyde, organic acid, and combinations thereof. An additional aqueous solution is disclosed including water, an acid, and an acid neutralizing agent which can be a reaction product of at least a portion of the nitrogen-containing compound and the functionalizing agent. Methods of treating a formation are also disclosed including treating a formation fluidly coupled to a wellbore with an oilfield treatment fluid comprising either or both of the aqueous solutions. 1. A method of treating a formation , comprising: water;', 'an acid;', 'a nitrogen-containing compound comprising urea; and', 'a functionalizing agent (FA) comprising glyoxal; and, 'preparing an aqueous solution comprisingtreating a formation fluidly coupled to a wellbore with an oilfield treatment fluid comprising the aqueous solution.2. The method of claim 1 , wherein the acid is selected from the group consisting of hydrochloric acid claim 1 , hydrobromic acid claim 1 , hydroiodic acid claim 1 , hydrofluoric acid claim 1 , sulfuric acid claim 1 , nitric acid claim 1 , phosphoric acid claim 1 , alkanesulfonic acids claim 1 , arylsulfonic acids claim 1 , acetic acid claim 1 , formic acid claim 1 , alkyl carboxylic acids claim 1 , acrylic acid claim 1 , lactic acid claim 1 , glycolic acid claim 1 , malonic acid claim 1 , fumaric acid claim 1 , citric acid claim 1 , tartaric acid claim 1 , and combinations thereof.3. The method of claim 1 , wherein the acid is HCl claim 1 , and a molar ratio of glyoxal:urea is from about 0.1 to about 2.4. The method of claim 1 , wherein the acid is HCl claim 1 , and a molar ratio of urea:HCl is from about 0.1 to about 2.4.5. The method of claim 1 , wherein a formation temperature is higher than about 225° F. (107° C.).6. A method of treating a formation claim 1 , comprising: water,', 'hydrochloric acid (HCl ...

CORROSION INHIBITOR INTENSIFIERS FOR CORROSION RESISTANT ALLOYS

Corrosion inhibitor intensifiers that include a phosphonic acid, phosphonate, an ester thereof, a salt thereof, and any combination thereof may be useful in combination with corrosion inhibitors for inhibiting the corrosion for corrosion resistant alloys, and in particular, phosphonate corrosion inhibitors. In some instances, a corrosion resistant alloy that comprises at least one selected from the group consisting of chromium, nickel, copper, molybdenum, and any combination thereof may be in fluid communication with a wellhore penetrating a subterranean formation and contacted by an acidic treatment fluid comprising an aqueous base fluid, an acid, a corrosion inhibitor, and a corrosion inhibitor intensifier that comprises at least one selected from the group consisting of a phosphonic acid, phosphonate, an ester thereof, a salt thereof, and any combination thereof. 112-. (canceled)13. A method comprising:providing a corrosion resistant alloy that comprises at least one selected from the group consisting of chromium, nickel, copper, molybdenum, and any combination thereof, wherein the corrosion resistant alloy is in fluid communication with a wellbore penetrating a subterranean formation; andcontacting the corrosion resistant alloy with an acidic treatment fluid comprising an aqueous base fluid, an acid, a corrosion inhibitor, and a corrosion inhibitor intensifier, the corrosion inhibitor intensifier comprising at least one selected from the group consisting of a phosphonic acid, phosphonate, an ester thereof, a salt thereof, and any combination thereof,{'b': '10', 'wherein the acidic treatment fluid corrodes the corrosion resistant alloy less than a comparable acidic treatment fluid not comprising the corrosion inhibitor intensifier by about % or greater, and'}contacting a filter cake in a wellbore penetrating a subterranean formation with the acidic treatment fluid so as to degrade at least a portion of the filter cake.14. A method comprising:providing a corrosion ...

Compositions for corrosion inhibition

Compounds and methods of inhibiting corrosion of mild steel. Compounds disclosed herein are cationic and contain multiple functional motifs such as propargyl, cinnamaldehyde, isoxazolidine and hydrophobe. These compounds are found to be effective in inhibiting mild steel corrosion in HCl, H 2 SO 4 , NaCl and CO 2 -saturated environments.

INHIBITORS OF TOP-OF-LINE CORROSION OF PIPELINES CONVEYING CRUDES FROM EXTRACTION OF HYDROCARBONS

The invention relates to a composition for inhibiting corrosion of the upper part (or roof) of a pipeline for conveying wet hydrocarbons, i.e. hydrocarbons comprising a variable amount of water, said composition comprising at least one Amine 1 with vapour pressure greater than or equal to 10 mmHg, and at least one. Amine 2 with vapour pressure greater than or equal to 0.1 mmHg and strictly less than 10 mmHg. 1. Composition for inhibiting top-of-line corrosion , comprising:from 1% to 30% by weight of at least one first amine (Amine 1) with vapour pressure greater than or equal to 10 mmHg (1.33 kPa), measured at 20° C.;from 5% to 50% by weight of at least one second amine (Amine 2) with vapour pressure greater than or equal to 0.1 mmHg 13.3 Pa) and less than 10 mmHg (<1.33 kPa), measured at 20° C.;from 0 to 30% by weight of at least one sulphur-containing additive, selected from mercapto-acids and mercapto-alcohols;from 0 to 60% by weight of at least one alkanolamine; andoptionally at least one solvent, in a sufficient quantity (q.s.) to reach 100%.3. Composition according to claim 1 , wherein Amine 1 is selected from MOPA (methoxy-3-propylamine) and EDIPA (N claim 1 ,N-diisopropylethylamine).5. Composition according to claim 1 , wherein Amine 2 is selected from octylamines; nonylamines claim 1 , decylamines claim 1 , undecylamines and dodecylamines.6. Composition according to claim 1 , further comprising one or more other inhibitors for inhibiting other types of corrosion encountered in the area of extraction of hydrocarbons.7. Method of inhibiting top-of-line corrosion of a hydrocarbon pipeline in which gas claim 1 , crude oil claim 1 , gas and crude oil circulate claim 1 , mixed with a variable amount of water claim 1 , comprising injecting a composition according to into the pipeline.8. Method according to claim 7 , wherein the inhibitor composition is injected at a rate from 100 ppm to 10 000 ppm claim 7 , expressed as the weight of the corrosion inhibiting ...

CHEMICAL MECHANICAL POLISHING METHOD FOR TUNGSTEN

A process for chemical mechanical polishing a substrate containing tungsten is disclosed to reduce corrosion rate and inhibit dishing of the tungsten and erosion of underlying dielectrics. The process includes providing a substrate; providing a polishing composition, containing, as initial components: water; an oxidizing agent; a thiolalkoxy compound; a dicarboxylic acid, a source of iron ions; a colloidal silica abrasive; and, optionally a pH adjusting agent; providing a chemical mechanical polishing pad, having a polishing surface; creating dynamic contact at an interface between the polishing pad and the substrate; and dispensing the polishing composition onto the polishing surface at or near the interface between the polishing pad and the substrate; wherein some of the tungsten (W) is polished away from the substrate, corrosion rate is reduced, dishing of the tungsten (W) is inhibited as well as erosion of dielectrics underlying the tungsten (W). 1. A method of chemical mechanical polishing tungsten , comprising:providing a substrate comprising tungsten and a dielectric;providing a chemical mechanical polishing composition, comprising, as initial components:water;an oxidizing agent;a thiolalkoxy compound;a colloidal silica abrasive;a dicarboxylic acid,a source of iron (III) ions; and,optionally, a pH adjusting agent;providing a chemical mechanical polishing pad, having a polishing surface;creating dynamic contact at an interface between the chemical mechanical polishing pad and the substrate; anddispensing the chemical mechanical polishing composition onto the polishing surface of the chemical mechanical polishing pad at or near the interface between the chemical mechanical polishing pad and the substrate to remove at least some of the tungsten.3. The method of claim 1 , wherein the chemical mechanical polishing composition provided has a tungsten removal rate of ≥1 claim 1 ,000 Å/min with a platen speed of 80 revolutions per minute claim 1 , a carrier speed of ...

Anti-corrosion formulations with storage stability

The present invention concerns the use of at least one compound A comprising at least one —SH or —S − , M + group, at least one —C-G-C— chain, in which G represents an atom from column 16 of the periodic table, not comprising a carboxy group —C(═O)—OH or —C(═O)—O − , and of a molar mass of between 90 g·mol −1 and 1000 g·mol −1 , as an additive in a formulation inhibiting corrosion in metals used in the oil industry, and more generally in any kind of industry involving the drilling of ores or fossil compounds, such as gas or oil, in order to improve both the anti-corrosion performance and the storage stability of same. The invention also concerns said corrosion-inhibiting formulations comprising at least one compound A.

CLEANING COMPOSITION AND METHOD OF MANUFACTURING METAL WIRING USING THE SAME

A cleaning composition includes about 0.01 to about 5 wt % of a chelating agent; about 0.01 to about 0.5 wt % of an organic acid; about 0.01 to about 1.0 wt % of an inorganic acid; about 0.01 to about 5 wt % of an alkali compound; and deionized water. 1. A cleaning composition comprising:about 0.01 to about 5 wt % of a chelating agent, wherein the chelating agent comprises an amino acid compound, wherein the amino acid compound comprises at least one of glycine, ethylenediaminetetraacetic acid, and cyclohexanediaminetetraacetic acid;about 0.01 to about 0.5 wt % of an organic acid, wherein the organic acid comprises at least one of lactic acid, lactic acid alkyl ester, acetic acid, and acetic acid alkyl ester;about 0.01 to about 1.0 wt % of an inorganic acid, wherein the inorganic acid comprises at least one of hydrochloric acid, phosphoric acid, nitric acid, sulfuric acid, hydrofluoric acid, bromic acid, and iodic acid;about 0.01 to about 5 wt % of an alkali compound, wherein the alkali compound comprises at least one of tetramethylammonium hydroxide, tetrabutylammonium hydroxide, tetraethylammonium hydroxide, and trimethylammonium chloride; anddeionized water.2. The cleaning composition according to claim 1 , wherein the cleaning composition has a pH of about 1 to about 6.3. The cleaning composition according to claim 1 , wherein the cleaning composition has a pH of about 8 to about 13.4. The cleaning composition according to claim 1 , further comprising about 0.01 to about 3 wt % of a corrosion inhibitor.5. The cleaning composition according to claim 8 , wherein the corrosion inhibitor comprises a benzene carboxylic acid-based material or a benzotriazole-based material.6. A cleaning composition comprising:about 0.01 to about 3 wt % of a corrosion inhibitor;about 0.01 to about 0.5 wt % of an organic acid, wherein the organic acid comprises at least one of lactic acid, lactic acid alkyl ester, acetic acid, and acetic acid alkyl ester;about 0.01 to about 1.0 wt % of ...

SQUEEZE TREATMENT FOR IN SITU SCAVENGING OF HYDROGEN SULFIDE

A method of performing a squeeze treatment comprises pumping a treatment fluid under pressure through a wellbore into a subterranean formation, wherein the treatment fluid includes a hydrogen sulfide scavenging compound that adsorbs onto the subterranean formation in a region around the wellbore. Production fluids are then allowed to flow from the subterranean formation into the wellbore, wherein the production fluids contact the adsorbed hydrogen sulfide scavenging compound as the production fluids flow through the region around the wellbore, and wherein the production fluids contain hydrogen sulfide that reacts with the hydrogen sulfide scavenging compound to reduce an amount of hydrogen sulfide in the production fluids before the production fluids flow into the wellbore. 1. A method , comprising:pumping a treatment fluid under pressure through a wellbore into a subterranean formation, wherein the treatment fluid includes a hydrogen sulfide scavenging compound that adsorbs onto the subterranean formation in a region around the wellbore; andflowing production fluids from the subterranean formation into the wellbore, wherein the production fluids contact the adsorbed hydrogen sulfide scavenging compound as the production fluids flow through the region around the wellbore, and wherein the production fluids contain hydrogen sulfide that reacts with the hydrogen sulfide scavenging compound to reduce an amount of hydrogen sulfide in the production fluids before the production fluids flow into the wellbore.2. The method of claim 1 , wherein the treatment fluid is maintained in the region around the wellbore for a predetermined period of time to allow the hydrogen sulfide scavenging compound to absorb onto the subterranean formation.3. The method of claim 2 , wherein the predetermined period of time is between 12 and 16 hours.4. The method of claim 2 , wherein the predetermined period of time is greater than 16 hours.5. The method of claim 2 , further comprising: ...

Novel Modified Acid Compositions as Alternatives to Conventional Acids in the Oil and Gas Industry

An aqueous modified acid composition for industrial activities, said composition comprising: an alkanolamine and strong acid in a molar ratio of not less than 1:15, preferably not less than 1:10; it can also further comprise a metal iodide or iodate. Said composition demonstrates advantages over known conventional acids and modified acids. 1. A method of use of a modified acid composition comprising a mineral acid and an alkanolamine in a molar ratio ranging from 3:1 to not more than 15:1 and having a pH of less than 1 in the water treatment industry said use being selected from the group consisting of: adjusting pH and neutralizing alkaline effluent.2. The method according to claim 1 , wherein the mineral acid is selected from the group consisting of: HCl claim 1 , nitric acid claim 1 , sulfuric acid claim 1 , sulfonic acid claim 1 , phosphoric acid claim 1 , and combinations thereof.3. The method according to claim 1 , wherein the mineral acid is hydrochloric acid.4. The method according to claim 1 , wherein the hydrochloric acid and alkanolamine are present in a molar ratio of not more than 10:1.5. The method according to claim 1 , wherein the hydrochloric acid and alkanolamine are present in a molar ratio of not more than 7.0:1.6. The method according to claim 1 , wherein the hydrochloric acid and alkanolamine are present in a molar ratio of not more than 4.1:1.7. The method according to claim 1 , wherein the alkanolamine is selected from the group consisting of: monoethanolamine; diethanolamine; triethanolamine and combinations thereof.8. The method according to claim 1 , wherein the alkanolamine is monoethanolamine.9. The method according to claim 1 , wherein the alkanolamine is diethanolamine.10. A method of use of a modified acid composition comprising a mineral acid and an alkanolamine in a molar ratio ranging from 3:1 to not more than 15:1 and having a pH of less than 1 in the fertilizer/landscaping industry to adjust the pH level of a soil.11. The method ...

METHOD OF USING BIOSURFACTANTS AS ACID CORROSION INHIBITORS IN WELL TREATMENT OPERATIONS

Corrosive effects arising during well treatment applications are inhibited and/or prevented by introducing into the well composition containing a corrosion inhibitor of a biosurfactant selected from glycolipids (other than sophorolipids and mannosylerythritol lipids), phospholipids; polyol lipids; lipoproteins, lipopeptides, ornithine lipids, carbohydrate-lipids, neutral lipids, aminoacid lipids, exolipids, liposan; siderolipids, protein polyamines diglycosyl diglycerides, fimbriae, saponified triglycerides and fatty acids. The composition may also contain a corrosion inhibitor intensifier. 1. A method of inhibiting corrosion during a well treatment operation which comprises introducing into a well a composition comprising a corrosive inhibiting effective amount of a biosurfactant selected from the group consisting of glycolipids (other than sophorolipids and mannosylerythritol lipids) , phospholipids; polyol lipids; lipoproteins , lipopeptides , ornithine lipids , carbohydrate-lipids , neutral lipids , aminoacid lipids , exolipids , liposan; siderolipids , protein polyamines diglycosyl diglycerides , fimbriae , saponified triglycerides and fatty acids.2. The method of claim 1 , wherein the biosurfactant is a glycolipid.3. The method of claim 2 , wherein the glycolipid is selected from the group consisting of rhamnolipids claim 2 , cellobiose lipids claim 2 , trehalose claim 2 , lipopolysaccharides claim 2 , emulsans and alasans.8. The method of claim 1 , wherein the biosurfactant is selected from the group consisting of phospholipids; polyol lipids; lipoproteins claim 1 , lipopeptides claim 1 , ornithine lipids claim 1 , carbohydrate-lipids claim 1 , aminoacid lipids claim 1 , exolipids claim 1 , siderolipids claim 1 , protein polyamines claim 1 , diglycosyl diglycerides claim 1 , fimbriae claim 1 , saponified triglycerides and fatty acids.9. The method of claim 8 , wherein the biosurfactant is a protease enzyme.10. The method of claim 1 , wherein the composition ...

CYANAMIDE-BASED CARBON DIOXIDE AND/OR HYDROGEN SULFIDE SCAVENGERS AND METHODS OF USE IN SUBTERRANEAN OPERATIONS

COscavenging additives having one or more cyanamide functionalities for the reduction of corrosion in subterranean formations are disclosed. The additives are also suitable for the simultaneous scavenging of COand H5. The additives can be introduced by way of a treatment fluid for the subterranean formation to interact with and reduce the concentration of COand/or H5 in the formation. 1. A method comprising:providing a treatment fluid comprising a base liquid and a scavenging additive comprising a cyanamide;introducing the treatment fluid into at least a portion of a subterranean formation where carbon dioxide is present; andallowing at least a portion of the treatment fluid to interact with at least a portion of the carbon dioxide to reduce the amount of the carbon dioxide present in the subterranean formation.2. The method of wherein the base liquid comprises an aqueous liquid.3. The method of wherein the cyanamide comprises at least one compound selected from the group consisting of: an alkaline earth metal cyanamide claim 1 , a hydrogen cyanamide claim 1 , and any combination thereof.4. The method of claim 1 , wherein the cyanamide comprises at least one compound selected from the group consisting of: C-Calkyl cyanamide claim 1 , dialkyl cyanamide claim 1 , allyl cyanamide claim 1 , alkenyl cyanamide claim 1 , diallyl cyanamide claim 1 , dialkenyl cyanamide claim 1 , and any combination thereof.5. The method of claim 1 , wherein the cyanamide is a dicyanamide or dicyandiamide.6. The method of claim 1 , wherein the cyanamide comprises at least one compound selected from the group consisting of: an ethylmethyl sulfa-cyanamide derivative claim 1 , a piperidine cyanamide derivative claim 1 , a piperazine cyanamide derivative claim 1 , a pyyrole-indole cyanamide derivative claim 1 , a pyrazine cyanamide derivative claim 1 , a quinolone cyanamide derivative claim 1 , an indole cyanamide derivative claim 1 , a guanidine derivative claim 1 , and any combination thereof. ...

BRANCHED VISCOELASTIC SURFACTANT FOR HIGH-TEMPERATURE ACIDIZING

A treatment fluid for use in a subterranean formation penetrated by the wellbore of a well includes: (i) water; (ii) a strong acid; and (iii) a branched viscoelastic surfactant having a hydrophobic portion with a total of 16 to 20 carbons; wherein the pH of the treatment fluid is less than 0.5; and wherein the viscosity of the treatment fluid is less than 5 cP at 40 sec-1. A method of treating a zone of a subterranean formation penetrated by a wellbore includes the steps of forming the treatment; (B) introducing the treatment fluid through the wellbore into the zone; and (C) allowing time for the strong acid in the treatment fluid to spend in the formation. Such a treatment fluid shows good rheological properties at temperatures above 93° C. (200° F.). 1. A treatment fluid for use in a subterranean formation penetrated by the wellbore of a well , the treatment fluid comprising:(i) water;(ii) a strong acid; and(iii) a branched viscoelastic surfactant having at least one hydrocarbon branch of 16 to 20 carbons;wherein the treatment fluid has an initial pH of less than 0.5; and{'sup': '−1', 'wherein the treatment fluid has a viscosity of less than 5 cP at 40 secat the initial pH.'}2. The treatment fluid according to claim 1 , wherein the strong acid comprises hydrochloric acid.3. The treatment fluid according to claim 1 , wherein the treatment fluid does not include hydrogen fluoride.4. The treatment fluid according to claim 1 , wherein the branched viscoelastic surfactant comprises a viscoelastic surfactant having a nitrogen atom with short chain alkyl groups.5. The treatment fluid according to claim 1 , wherein the branched viscoelastic surfactant comprises a quaternary of a branched fatty acid substituted amidoamine.6. The treatment fluid according to claim 5 , wherein the branched viscoelastic surfactant comprises N-Ethyl-N claim 5 ,N-Dimethyl-[(3-Oxoisooctadecyl)Amino]-1-Propanaminium Ethyl Sulfate.7. The treatment fluid according to claim 1 , wherein the treatment ...