УСТРОЙСТВО И СПОСОБ НАВЕДЕНИЯ НА ЦЕЛЬ ПРИ НАПРАВЛЕННОМ БУРЕНИИ

Изобретение относится к области подземного направленного бурения, а более конкретно к системе наведения на цель при направленном бурении, устройству и связанному с ним способу. Устройство, используемое совместно с системой для выполнения горизонтально направленного бурения; система включает в себя бурильную колонну, вытянутую от буровой установки до бурового инструмента, так чтобы буровой инструмент управлялся на основании ориентации по крену. Система также включает в себя устройство для выработки команд управления для направления бурового инструмента на положение цели. В ответ, по меньшей мере частично, на указанные команды управления, дисплей выполнен с возможностью избирательного отображения команды поворота, команды толкания и командой вращения. Описан индикатор управления, который показывает текущую ориентацию по крену бурового инструмента. 3-D сетка может быть анимационной и отцентрированной на индикаторе управления или индикаторе цели. Округление отношения команд управления позволяет ...

НАПРАВЛЯЮЩИЙ БЛОК ДЛЯ НАПРАВЛЕННОГО БУРЕНИЯ СКВАЖИНЫ (ВАРИАНТЫ) И СПОСОБ НАПРАВЛЕННОГО БУРЕНИЯ СКВАЖИНЫ С ИСПОЛЬЗОВАНИЕМ НАПРАВЛЯЮЩЕГО БЛОКА

Группа изобретений относится к области наклонно-направленного бурения. Направляющий блок для направленного бурения скважины содержит кожух, имеющий продольную ось и расположенный в бурильной колонне для использования в скважине, шпиндель, выполненный с возможностью прохождения через кожух, отклоняющий блок, выполненный с возможностью отклонения шпинделя относительно продольной оси. Отклоняющий блок содержит отклоняющую муфту, выполненную с возможностью отклонения шпинделя на основе положения отклоняющей муфты вдоль продольной оси внутри кожуха, кольцевую шестерню, выполненную с возможностью перемещения отклоняющей муфты вдоль продольной оси в упомянутое положение, и муфту ориентации отклонителя, соединенную с отклоняющей муфтой и выполненную с возможностью размещения вокруг шпинделя, причем муфта ориентации отклонителя содержит наклонное отверстие, содержащее расположенную в нем несущую каретку. При этом несущая каретка выполнена с возможностью аксиального перемещения в муфте ориентации ...

БУРОВАЯ РОТОРНАЯ УПРАВЛЯЕМАЯ СИСТЕМА

Изобретение относится к технологии бурения, а именно к буровым роторным управляемым системам (РУС). Управляемая по траектории компоновка низа бурильной колонны (КНБК) содержит компонент бурильной колонны, включающий в себя подсистему исполнительного механизма, причем подсистема исполнительного механизма содержит исполнительный механизм с выходным валом для избирательного вращения диска клапана вокруг оси вращения КНБК. Подсистема исполнительного механизма дополнительно содержит маркер положения на выходном валу, датчик положения вблизи выходного вала, при этом датчик положения и маркер положения взаимодействуют, когда маркер положения поворачивается с выходным валом в положение, смежное с датчиком положения, датчик положения в ответ передает сигнал подсистеме исполнительного механизма для применения в управлении угловой ориентацией диска клапана. КНБК дополнительно содержит отклоняющую подсистему, проходящую между компонентом бурильной колонны и буровым долотом, которая принимает поток ...

МНОГОКАНАЛЬНЫЙ ВРАЩАЮЩИЙСЯ ЭЛЕКТРИЧЕСКИЙ СОЕДИНИТЕЛЬ

Изобретение относится к многоканальному вращающемуся электрическому соединителю и может включать в себя многочисленные первые контакты, которые отнесены радиально друг от друга, и многочисленные вторые контакты, которые входят в электрический контакт с соответствующими первыми контактами, при этом происходит относительное вращение между первыми и вторыми контактами. Вторые контакты могут быть отнесены радиально друг от друга. Скважинный инструмент включает в себя одну секцию, которая вращается относительно другой секции скважинного инструмента, и многоканальный вращающийся электрический соединитель, который включает в себя многочисленные контакты кольцевой формы, которые вращаются относительно друг друга. Способ эксплуатации скважинного инструмента в подземной скважине включает в себя производство относительного вращения между секциями скважинного инструмента и поддержание многоканальной связи электрическими сигналами между секциями, при этом происходит относительное вращение между секциями ...

МНОГОСТВОЛЬНАЯ СИСТЕМА Y-БЛОКА

Группа изобретений относится к многостволовым скважинам. Технический результат – снижение вероятности утечки, коррозии и повреждения оборудования в боковых стволах. Система для применения в многоствольной скважине содержит многоствольный скважинный комплект, размещенный в многоствольной скважине. Многоствольный скважинный комплект содержит Y-блок, содержащий защитный кожух и желоб встроенного байпаса, расположенный вдоль внешней части Y-блока, боковую колонну подъемных труб, герметично соединенную с защитным кожухом и проходящую в боковой ствол многоствольной скважины, основную колонну подъемных труб, герметично соединенную с защитным кожухом и проходящую в основной ствол многоствольной скважины, и верхнюю по стволу колонну подъемных труб, герметично соединенную с защитным кожухом и проходящую вверх по скважине от Y-блока, и линию управления, расположенную в желобе встроенного байпаса и проложенную в боковой ствол без соединения внахлестку. При этом Y-блок дополнительно содержит верхний ...

УЗЕЛ КЛИНА-ОТКЛОНИТЕЛЯ И ОТКЛОНЯЮЩЕГО КЛИНА ДЛЯ МНОГОСТВОЛЬНЫХ СКВАЖИН

Группа изобретений относится к области заканчивания скважин. Способ заканчивания стволов скважины, включающий перемещение клина-отклонителя и фиксатора якоря внутрь родительского ствола скважины, при этом фиксатор якоря прикрепляется к клину-отклонителю посредством разъемного соединения, а родительский ствол скважины облицован по меньшей мере частично обсадной колонной, которая содержит защелочное соединение; закрепление фиксатора якоря внутри родительского ствола скважины посредством стыковки защелочного профиля фиксатора якоря с защелочным соединением; отклонение бурового долота клином-отклонителем для бурения бокового ствола скважины, отходящего от родительского ствола скважины; перемещение оборудования бокового заканчивания внутрь бокового ствола скважины инструментом для спуска обсадной колонны-хвостовика, при этом оборудование бокового заканчивания содержит заканчивающий инструмент; отделение клина-отклонителя от фиксатора якоря разъемным соединением с использованием инструмента извлечения ...

СИСТЕМА БУРЕНИЯ С РЕГУЛИРУЕМЫМ СРАБАТЫВАНИЕМ ПЛОЩАДКИ УПРАВЛЕНИЯ НАПРАВЛЕНИЕМ

Группа изобретений относится к области наклонно-направленного бурения скважин. Устройство для образования ствола скважины в подземном пласте содержит компоновку низа бурильной колонны (КНБК), содержащую первую секцию и вторую секцию, гибкий элемент, соединяющий первую секцию КНБК со второй секцией КНБК, выполненный с возможностью сгибания для обеспечения возможности осевого несовпадения между первой секцией КНБК и второй секцией КНБК, буровое долото, присоединенное к первому концу первой секции КНБК, буровой двигатель, расположенный вдоль второй секции КНБК и соединенный с буровым долотом с возможностью его вращения, причем упомянутый гибкий элемент отделяет буровой двигатель от первой секции КНБК, к первому концу которой присоединено буровое долото, и узел управления направлением, расположенный вдоль КНБК, содержащий первый блок управления направлением, содержащий по меньшей мере одну площадку, создающую усилие в первом направлении, и второй блок управления направлением, расположенный ...

Роторная управляемая система

Изобретение относится к нефтегазодобывающей отрасли, а именно к роторным управляемым системам, используемым при бурении наклонно направленных и горизонтальных скважин. Роторная управляемая система включает в себя многозаходный героторный механизм, состоящий из статора, содержащего наружный корпус с винтовыми зубьями, выполненными из эластомера, и вала-ротора, зубья которых образуют между собой полости - рабочие камеры, и имеющий эксцентриситет, равный половине высоты зубьев, согласно изобретению вал-ротор является полым в верхней и нижней частях и содержит каналы, соединяющие его внутренние полости с рабочими камерами героторного механизма, а также имеет в верхней части присоединительную резьбу к бурильным трубам, верхний герметичный эксцентричный подшипник, нижний герметичный эксцентричный подшипник и присоединительную резьбу к гибкому наддолотному переводнику, который является основанием для осевой опоры скольжения нижнего эксцентричного подшипника, имеющего, как и верхний эксцентричный ...

СПОСОБ ПОВЫШЕНИЯ УГЛЕВОДОРОДООТДАЧИ ПЛАСТОВ И ИНТЕНСИФИКАЦИИ ДОБЫЧИ НЕФТЕГАЗОКОНДЕНСАТНЫХ СКВАЖИН ПОСРЕДСТВОМ ГИДРОМОНИТОРНОГО РАДИАЛЬНОГО ВСКРЫТИЯ ПЛАСТА НА ДЕПРЕССИИ

Изобретение относится к способам для промывки нефтегазоконденсатных скважин с использованием жидкостей и газов. Техническим результатом является повышение продуктивности скважин и коэффициента извлечения углеводородов. Способ повышения углеводородоотдачи пластов и интенсификации добычи нефтегазоконденсатных скважин посредством гидромониторного радиального вскрытия пласта на депрессии включает установку в скважине высокопрочных НКТ, механического якоря, поворотного и герметизирующего устройств, отклонителя с проходящим в нем внутренним каналом, привязкой и возможной ориентацией его в пространстве в интервале нижнего уровня проводки боковых стволов. Ниже отклонителя последовательно устанавливают разъединитель, циркуляционный узел, пакер и воронку. Герметизируют устья скважины. Устанавливают гидромониторную насадку, узел управления траекторией ствола, навигационную систему, рабочий койл (гибкая НКТ), устройство перераспределения потока, обратный клапан, подающий койл. Осуществляют подачу аэрированной ...

ОТКЛОНИТЕЛЬ

Полезная модель относится к нефтедобывающей промышленности, в частности к механическим отклонителям с использованием клина-отклонителя и узла опоры клина-отклонителя в нем. Она может быть использована для закрепления компоновки устройства на стенках обсадной колонны труб и прорезания «окна» в обсадной колонне и забуривания бокового ствола в скважину.Задачей полезной модели является разработка отклонителя с использованием механического клина-отклонителя и механического узла опоры, исключающего недостатки отклонителя прототипа.Согласно изобретению узел опоры включает: раздвижное устройство, механический якорь на сплошном стволе и переходник между ними, переходник выполнен переменного сечения с цилиндрическим сечением в разрезе вверху, образуя шарнирную часть для закрепления с нижней частью нижнего клина раздвижного устройства узла опоры и коническим сечением в разрезе внизу, функционируя как фиксатор для захватов механического якоря, сплошной ствол узла опоры выполнен с двумя симметрично ...

Устройство для направленного бурения ствола скважины

Полезная модель относится к области бурения грунта, а именно к устройствам для изменения направления буровой скважины. Устройство для направленного бурения ствола скважины содержит невращающийся корпус (1), в котором расположены вал (В) (2) бурового долота (3) и узел отклонения вала долота, содержащий привод (4), выходное звено которого соединено последовательно с передаточным механизмом (5) и механизмом углового отклонения вала долота с клиновой парой возвратно-поступательного движения, один элемент (6) которой соединен с передаточным механизмом (5), а второй элемент (7) - с В (2). Устройство снабжено, как минимум, двумя дополнительными приводами (8) и (9) узла отклонения В (2), каждый из которых соединен последовательно с дополнительным передаточным механизмом и механизмом углового отклонения В (2). Каждый механизм углового отклонения В (2) имеет клиновую пару возвратно-поступательного движения, один элемент (10) и (11) которой соединен с соответствующим передаточным механизмом, а второй (12) и (13) - с В 2. Повышается точность пространственной ориентации вала долота, упрощается конструкция устройства и его эксплуатация. 1 з.п. ф-лы, 2 ил. Ц 1 174947 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) (11) сх а < &(13) (51) МПК ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ ЕВ 708 (2006.01) (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21)(22) Заявка: 2017113598, 19.04.2017 (24) Дата начала отсчета срока действия патента: 19.04.2017 Дата регистрации: 13.11.2017 Приоритет(ы): (22) Дата подачи заявки: 19.04.2017 (45) Опубликовано: 13.11.2017 Бюл. № 32 Адрес для переписки: 614014, г. Пермь, ул. 1905 года, 35, стр. 2404, оф. 318, ПАО "Мотовилихинские заводы", ЗАО "СКБ", патентно-лицензионное бюро (72) Автор(ы): Еременко Владимир Григорьевич (КО), Иконников Юрий Александрович (КО) (73) Патентообладатель(и): Публичное акционерное общество специального машиностроения и металлургии "Мотовилихинские заводы" (КО) (56) Список документов, цитированных в отчете о поиске: ВИ 2603148 С2, 20.11.2016. ...

Самоориентируемый извлекаемый клин-отклонитель многократной активации

Полезная модель относится к области бурения, текущего и капитального ремонта нефтяных и газовых скважин, а именно используется для повторного входа технологического инструмента в боковой ствол многоствольной скважины в процессе ее эксплуатации или капитального ремонта. Самоориентируемый извлекаемый клин-отклонитель многократной активации, включающий корпус, спускаемый на колонне труб, соединенный посредством сварного или резьбового соединения с устройством для ориентирования, в котором установлен толкатель и закреплен с помощью фиксирующего пальца ловильный крюк, верхняя часть которого выполнена из легкорасфрезеруемого материала, а нижняя - из легированной стали с высокой твердостью; якорящий элемент, установленный через промывочный переводник; корпус при этом оснащен пазом для крюка извлечения, к корпусу с помощью срезного винта и шпоночного паза прикреплен фрезер оконный, сообщенный с устройством для ориентирования и якорящим элементом гидравлической трубкой, обеспечивающей гидравлическую ...

УСТРОЙСТВО ДЛЯ ГИДРОМЕХАНИЧЕСКОГО УПРАВЛЕНИЯ НАПРАВЛЕННЫМ РОТОРНЫМ БУРЕНИЕМ

Устройство предназначено для использования при бурении наклонно-направленных и горизонтально-направленных интервалов при строительстве скважин. Устройство содержит трубчатый корпус, толкатель, трубчатый вал, камеру давления, направляемые штифты, поршень с направляющей дорожкой, имеющей первую, вторую и третью взаимосвязанные направляющие части для зацепления направляемых штифтов, первое смещающее средство, перемещающее поршень, муфту, жестко установленные на муфте кулачки, неподвижно смонтированные в трубчатом корпусе пазы для зацепления с кулачками, второе смещающее средство для перемещения муфты с кулачками в положение зацепления, в котором кулачки и пазы зацепляются друг за друга, кулачки и пазы выполнены с возможностью отсоединения друг от друга, нижняя часть трубчатого корпуса выполнена с искривленной частью, трубчатый вал установлен с возможностью осевого движения внутри трубчатого корпуса и состоит из последовательно герметично соединенных долотного вала, нижнего вала, поршневого ...

Устройство для создания деревянного искусственного забоя

Полезная модель относится к области направленного бурения в твердых породах, в частности к средствам, предназначенным для создания временного искусственного забоя. Устройство для создания деревянного искусственного забоя включает переходник, контейнер, выполненный из колонковой трубы, в которой расположены продавочная пробка, щебень, удерживаемый пробкой, деревянная пробка, закрепленная при помощи срезных штифтов. Деревянная пробка закреплена в верхней части колонковой трубы, а снизу снабжена клином с закрепленными на нем распорными плашками. На наружной поверхности деревянной пробки по всей ее длине выполнены углубления для закрепления в них троса. Деревянная пробка выполнена длиной, обеспечивающей забуривание нового направления с отклонением от оси скважины нагде d– диаметр скважины. Обеспечивается повышение эффективности искусственного искривления скважины. 2 з.п. ф-лы, 9 ил.

Способ разработки залежи сверхвязкой нефти

Изобретение относится к нефтедобывающей промышленности, в частности, к разработке залежей высоковязкой нефти или битумов с нефтенасыщенной толщиной менее 10 м. Технический результат - увеличение охвата разработкой залежи, повышение нефтеотдачи продуктивного пласта. В способе разработки залежи сверхвязкой нефти 1, включающем бурение вертикальной скважины 2, исследование фильтрационно-емкостных свойств вскрытых бурением пластов, выделение битумонасыщенных и водонасыщенных пропластков, после выделения водонасыщенных и нефтенасыщенных пропластков определяют уровень водонефтяного контакта ВНК 3. После этого в вертикальную скважину 2 спускают колонну труб 4 до глубины на 10 м ниже ВНК 3 и производят ее цементирование с образованием искусственного забоя. Далее производят установку нижнего клина-отклонителя в направлении бурения нижних боковых стволов 5, 5', вырезают окно. Производят бурение от 2 до 4 нижних боковых горизонтальных стволов 5, 5' длиной 50-100 м, причем таким образом, чтобы нижние ...

Якорь гидравлический неизвлекаемый

Изобретение относится к области бурения нефтяных и газовых скважин, в частности к устройствам для зарезки и бурения боковых стволов из обсаженных скважин. Якорь выполнен в виде профильной трубы, имеет гидравлический канал сообщения с внутритрубным пространством бурильных труб посредством гидропровода. В верхней части якоря выполнено шарнирное соединение с клин-отклонителем, нижний конец имеет башмак. В башмаке якоря установлен подпружиненный дифференциальный клапан, выполненный с возможностью перепускания скважинной жидкости через центральный канал сообщения между внутритрубным и затрубным пространством при возникновении избыточного затрубного или внутритрубного давления. Центральный канал сообщения включает кольцевую и внутреннюю полости. Кольцевая полость образована между наружной поверхностью дифференциального клапана и внутренней поверхностью башмака якоря. Внутренняя полость центрального канала сообщения является одновременно внутренней полостью дифференциального клапана, в ней свободно ...

УНИВЕРСАЛЬНЫЙ ШАРНИР ВЫСОКОЙ НАГРУЗКИ ДЛЯ СКВАЖИННОГО РОТОРНОГО УПРАВЛЯЕМОГО БУРОВОГО ИНСТРУМЕНТА

Изобретение относится к устройствам для направленного бурения. Техническим результатом является создание компактной системы бурения скважины, содержащей универсальный шарнир с высокой несущей способностью. Высокая несущая способность достигается методами, применяющими уникальные механизмы передачи нагрузки. Например, более высокая несущая способность может обеспечиваться с использованием принципа распределения нагрузки, согласно которому скручивающие напряжения передаются совместно через штифты универсального шарнира и боковые грани крестовины универсального шарнира. Более высокая несущая способность может также достигаться путем передачи нагрузки через монолитную крестовину, имеющую штифты, составляющие с ней единое целое, и блок разъемная вилка/хомут. В другом варианте воплощения более высокая несущая способность является результатом использования штифтов универсального шарнира, вставленных с внутренней стороны универсального шарнира и завинченных наружу до достижения полного соединения ...

НАПРАВЛЕННОЕ БУРЕНИЕ С ПРИМЕНЕНИЕМ ВРАЩАЮЩЕГОСЯ КОРПУСА И СЕЛЕКТИВНО ОТКЛОНЯЮЩЕГОСЯ ПРИВОДНОГО ВАЛА

Группа изобретений относится к области наклонно-направленного бурения. Система управления направлением бурильной компоновки в стволе скважины, содержащая утяжеленную бурильную трубу инструмента, корпус, установленный вблизи конца и по меньшей мере частично за пределами утяжеленной бурильной трубы инструмента, отклоняющийся приводной вал, соединенный с буровым долотом и по меньшей мере частично установленный в корпусе; и двигатель, соединенный с корпусом, при этом двигатель, когда активирован, независимо вращает корпус. Обеспечивается создание управляемой по направлению движения бурильной компоновки с диаметром, по существу одинаковым с диаметром бурильной колонны, с возможностью прохода через скважинное оборудование. 3 н. и 17 з.п. ф-лы, 4 ил.

МНОГОСТВОЛЬНАЯ СИСТЕМА Y-БЛОКА

... 1. Система для применения в многоствольной скважине, содержащая:многоствольный скважинный комплект, размещенный в многоствольной скважине, который содержит:Y-блок, содержащий защитный кожух и желоб встроенного байпаса, расположенный вдоль внешней части Y-блока;боковую колонну подъемных труб, герметично соединенную с защитным кожухом и проходящую в боковой ствол многоствольной скважины;основную колонну подъемных труб, герметично соединенную с защитным кожухом и проходящую в основной ствол многоствольной скважины; иверхнюю по стволу колонну подъемных труб, герметично соединенную с защитным кожухом и проходящую вверх по скважине от Y-блока; илинию управления, расположенную в желобе встроенного байпаса и проложенную в боковой ствол без соединения внахлестку.2. Система по п. 1, отличающаяся тем, что Y-блок содержит множество желобов встроенного байпаса и множество линий управления, расположенных во множестве желобов байпаса, при этом множество линий управления проложено в боковой ствол без соединения ...

Устройство для направленного бурения скважин

Изобретение относится к области направленного бурения скважин и предназначено для отклонения и корректировки направления ствола скважины при использовании снаряда со съемным керноприемником. Устройство для направленного бурения скважин включает отклонитель с ориентирующим устройством и корпус с механизмом блокирования отклонителя внутри колонны бурильных труб с коронкой. Отклонитель выполнен в виде подпружиненного штока с возможностью продольного перемещения на длину штока внутри корпуса. Внешний диаметр штока не превышает внутреннего диаметра коронки, а корпус отклонителя соединен с корпусом механизма блокирования. Шток снабжен шарниром с возможностью отклонения в одной заданной плоскости. На нижнем конце штока выполнен профильный башмак, профиль которого имеет скос торца, направление которого противоположно направлению отклонения штока. На штоке над шарниром с возможностью продольного скольжения по штоку установлена втулка, наружная форма которой соответствует внутренней форме коронки ...

Способ строительства бокового ствола скважины

Изобретение относится к области бурения боковых стволов нефтяных и газовых скважин, а именно к способам предотвращения разрушения и обвала стенок скважины при бурении интервалов с неустойчивыми породами. Способ строительства бокового ствола скважины, включающий предварительное определение зоны неустойчивых пород, вырезание окна в эксплуатационной колонне, бурение бокового ствола, крепление бокового ствола безмуфтовой колонной-летучкой в определенной зоне неустойчивых пород с установленным на нижнем конце разбуриваемым башмаком, бурение бокового ствола до проектного забоя. Боковым стволом зону неустойчивых пород вскрывают в три этапа. На первом этапе проводят бурение до кровли зоны неустойчивых пород с использованием технической воды для облегчения прокачки через затрубье бурильной колонны. Проходку на втором этапе зоны неустойчивых пород на буровом растворе на углеводородной основе, а расширение ствола скважины на третьем этапе зоны неустойчивых пород на буровом растворе на углеводородной ...

УСТРОЙСТВО ДЛЯ УСТАНОВКИ ОБСАДНЫХ ФИЛЬТРОВ В ГЛУБОКИХ ПЕРФОРАЦИОННЫХ КАНАЛАХ-ВОЛНОВОДАХ

Изобретение относится к техническим средствам для строительства и ремонта нефтяных и газовых скважин, а именно к средствам вторичного вскрытия продуктивных пластов. Устройство для установки обсадных фильтров в глубоких перфорационных каналах-волноводах содержит полый корпус с установленной в нем направляющей трубой, транспортировочную трубу, клин-отклонитель и связанный с ним якорь. Кроме того, оно снабжено поворотно-ориентирующим механизмом, размещенным между якорем и клином-отклонителем, жестко связанным с полым корпусом, переходником, присоединенным к направляющей трубе, в нижней части которой выполнены радиальные отверстия, соединяющие ее с образованным между полым корпусом и направляющей трубой кольцевым пространством. При этом переходник соединен с транспортировочной трубой, в которой установлена разделительная вставка, снабженная коническими эластичными манжетами, а также жесткими опорами, взаимодействующими с манжетами и образующими в транспортировочной трубе, переходнике и направляющей ...

Боковой дефлектор с проходным каналом для подключения к интеллектуальным системам

Предусмотрены системы для подключения линии управления к интеллектуальному устройству, расположенному ниже места пересечения бокового ствола скважины в соответствии с данным изобретением и проиллюстрированными фигурами. Приведенная в качестве примера система содержит боковой дефлектор. Боковой дефлектор содержит корпус бокового дефлектора, верхнюю часть бокового дефлектора, соединенную с корпусом бокового дефлектора, отклоняющую поверхность и проходной канал, который закрыт верхней частью бокового дефлектора, когда верхняя часть бокового дефлектора соединена с корпусом бокового дефлектора. Верхняя часть бокового дефлектора является съемной и выполнена с возможностью отсоединения от корпуса бокового дефлектора. Система дополнительно содержит трубчатую колонну, головку соединителя линии управления, соединенную с трубчатой колонной, первую линию управления, соединенную с проходным каналом и спускающуюся вниз по стволу скважины от места пересечения бокового ствола скважины, и вторую линию управления ...

КЛИНОВОЙ ОТКЛОНИТЕЛЬ

Изобретение относится к технике бурения, в частности к устройству для прорезания "окна" в обсадной колонне, и может быть использовано при бурении нефтяных и газовых скважин для изменения траектории ствола скважины при аварийных работах или бурении дополнительных стволов в скважине. Клиновой отклонитель содержит направляющий клин с рабочей поверхностью, пазом, размещенным с противоположной стороны рабочей поверхности, для размещения шланга высокого давления и камерой, полость которой расположена в корпусе, жестко соединенном с нижней частью клина, которая сообщается со шлангом высокого давления. Корпус выполнен в виде цилиндра с прорезанными в нем лепестками в верхней и нижней частях, на концах которых расположены плашки диаметром, равным внутреннему диаметру обсадной колонны. В верхней части плашка, расположенная на стороне рабочей поверхности клина, имеет толщину больше, чем остальные плашки в этой части. В нижней части плашка, расположенная на стороне, противоположной рабочей поверхности ...

НАПРАВЛЕННОЕ БУРЕНИЕ С ОДНОВРЕМЕННОЙ ПОДАЧЕЙ ЭЛЕМЕНТА ХВОСТОВИКА С ВОЗМОЖНОСТЬЮ КРЕПЛЕНИЯ ЗАЩЕЛКАМИ ДЛЯ МНОГОКРАТНЫХ СПУСКОПОДЪЕМНЫХ ОПЕРАЦИЙ

Изобретение предназначено для направленного бурения с одновременной подачей хвостовика с возможностью крепления защелками для многократных спускоподъемных операций. По мере бурения ствола скважины устанавливают каждую обсадную трубу и хвостовик, имеющие верхние и нижние внутренние защелочные соединения. Хвостовик, устанавливаемый под исходной обсадной трубой, содержит внешнее защелочное устройство, имеющее размеры, подходящие для соединения внутренними защелочными соединениями исходной обсадной трубы. Компоновка низа бурильной колонны может содержать верхнее и нижнее внешние защелочные устройства внутренней колонны для соединения с верхними и нижними внутренними защелочными соединениями устанавливаемого хвостовика. Такая организация позволяет подавать и устанавливать хвостовик с помощью компоновки низа бурильной колонны во время направленного бурения и временно подвешивать хвостовик от исходной обсадной трубы для замены компоновки низа бурильной колонны во время бурения. 2 н. и 18 з.п.

УПРАВЛЕНИЕ ТРАЕКТОРИЕЙ БУРОВОЙ СКВАЖИНЫ ПОСРЕДСТВОМ ИЗМЕРЕНИЯ ГЛУБИНЫ

СИСТЕМА И СПОСОБЫ УПРАВЛЕНИЯ НАКЛОННО НАПРАВЛЕННЫМ БУРЕНИЕМ

СИСТЕМА, СПОСОБ И КОМПЬЮТЕРНЫЙ ПРОГРАММНЫЙ ПРОДУКТ ДЛЯ ИЗОБРАЖЕНИЯ ГОРИЗОНТАЛЬНОГО РАЗРЕЗА ВДОЛЬ ТРАЕКТОРИИ СКВАЖИНЫ ДЛЯ ПРИМЕНЕНИЙ НАПРАВЛЕННОГО БУРЕНИЯ

РЕГУЛИРУЕМЫЙ ЗАБОЙНЫЙ ДВИГАТЕЛЬ ДЛЯ НАКЛОННО-НАПРАВЛЕННОГО БУРЕНИЯ

Verfahren zum Richtungsbohren

Verfahren zum Herstellen von Tiefbohrungen in geologischen Strukturen

Ein Verfahren zum Herstellen von Tiefbohrungen in geologischen Schichten weist die folgenden Schritte auf: Anbohren der erdbodennahen Schicht unter einem von der Vertikalen abweichenden Winkel; Tiefbohren unter einem beliebigen Winkel bis zu einer Tiefe einer Lagerstätte; wenigstens teilweises Durchbohren der Lagerstätte und Erzeugen einer motorischen Kraft in der Bohrvorrichtung in oder entgegen der Bohrrichtung, derart, daß jederzeit ein geeigneter Anpreßdruck über den Bohrstrang auf das Bohrwerkzeug ausgeübt wird. Bei einem verwandten Verfahren wird das Anbohren unter einem beliebigen, insbesondere vertikalen Winkel durchgeführt, und an das hier vollständige Durchbohren der Lagerstätte schließt sich ein Steigbohren nach oben unter einem beliebigen Winkel bis zum Erreichen des Erdbodenniveaus an. Mit diesem Verfahren kann die Ausbeute und die Wirtschaftlichkeit einer Erschließung von Lagerstätten verbessert werden, indem unter motorischem Vorschub lange horizontale und ansteigende Bohrstreckenabschnitte ...

VERFAHREN UND VORRICHTUNG ZUM STEUERN DER RICHTUNG EINES SCHLAGBOHRWERKZEUGS IM BOHRLOCH.

Drehbare Sensoren zur Messung von Eigenschaften einer unterirdischen Formation

Bohrlochanordnung (214), umfassend:einen Werkzeugstrang (212);einen mit dem Werkzeugstrang (212) gekoppelten richtungsabhängigen Sender (216);einen mit dem Werkzeugstrang (212) gekoppelten richtungsabhängigen Empfänger (218), wobei zumindest einer von dem richtungsabhängigen Empfänger (218) und dem richtungsabhängigen Sender (216) bezogen auf den Werkzeugstrang (212) drehbar ist; undein mit zumindest dem Empfänger (218) kommunikativ gekoppeltes Informationsverarbeitungssystem, wobei das Informationsverarbeitungssystem einen Prozessor (1102) und eine mit dem Prozessor gekoppelte Speichervorrichtung (1104) umfasst, wobeizumindest einer von dem Sender (216) oder Empfänger (218) eine Antenne einschließt, die eine erste, in einer ersten Wicklungsebene (217) angeordnete Wicklung (215) und eine zweite, in einer zweiten Wicklungsebene (219) angeordneten Wicklung (213) aufweist, wobei die erste Wicklung (215) bezogen auf die zweite Wicklung (213) geneigt ist, wobei der in der Speichervorrichtung ...

Verfahren zum Lenken eines Erdbohrgeräts und ein lenkbares Gerät zum Herstellen einer Erdbohrung

Verfahren zum Lenken eines Erdbohrgerätes mit einem sich drehenden, mit Lenkelementen versehenen Bohrkopf, dadurch gekennzeichnet, daß ein oder mehrere richtungsändernde Lenkimpulse auf den Bohrkopf zur Wirkung gebracht werden oder eine Impulsfolge unterbrochen wird, wenn die Winkellage des Bohrkopfes bezüglich seiner Achse der Lage entspricht, in der die Richtungsänderung erfolgen soll.

VORRICHTUNG UND VERFAHREN ZUR HERSTELLUNG EINER LATERALBOHRUNG

Tool for directional boring

Whipstock and deflector assembly for multilateral wellbores

Directional drilling methods and systems employing multiple feedback loops

An arrangement for sinking a well drill hole having a hydrostatic uncoupling element

Wedge deflecting device for sidetracking

Multilateral Y-block system

Method and apparatus for controllably drilling off-vertical holes

... 1,064,804. Wells; drilling by jet; solution ruining. J. K. HENDERSON. April 9, 1965 [April 23, 1964], No. 15080/65. Heading E1F. Apparatus for drilling a laterally extending hole from a well 20 to a well 10 comprises a drilling device 24, 26, 28 located in the well 20, a signal generating means 72 (Fig. 4 not shown) in one of the wells, a signal receiving means 16 in the other well, and means for changing the drilling direction to bring the signal generating and receiving means together, the signal generating or receiving means in the well 20 being attached to the drilling device. The drilling device comprises drill string 24, flexible part 26, and jetting head 28. The head has a single nozzle 60 (Fig. 4 not shown) and is rotated by a motor 64 to change the direction of jetting in response to the signals, the initial hole deviation being given by a whipstock 30. The means 16 may be replaced by a tubing string 130 (Fig. 6, not shown) having depending legs 116, 118 which may be caused to ...

Apparatus and method for installation of ducts

Scoop and method of orienting and setting a whipstock assembly

Steerable boring machine

A boring machine having a multi strand rod assembly for producing boreholes in the ground, comprises a rotatable inner rod 20, an optionally rotatable outer rod 19, at least one steering and digging tool 5 driven by the inner rod 20 and having an axis of rotation inclined at an angle, for example 90{, to the axis of the rod 20, and a linear drive for the rod assembly 19,20. It is possible to perform both straight-ahead boring when both the outer and inner rods are driven and if only the steering and digging tool 5 is driven, curved boring. As shown, the digging tool is driven via bevelled gears 25,26,27 and a belt or chain 29. In another embodiment the belt itself can be provided with teeth for digging as in a coal plane (see figure 6). Drilling fluid is supplied to nozzle 31 via passage 32. Radio transmitter 6 relays data such as depth of drilling to a receiver at the surface. The lower end of the outer rod 19 can optionally be provided with boring means (see figure 5). A further embodiment ...

Apparatus and methods for anchoring and orienting equipment in well casing

Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk

Methods and systems may be provided simulating forming a wide variety of directional wellbores including wellbores with variable tilt rates and/or relatively constant tilt rates. The methods and systems may also be used to simulate forming a wellbore in subterranean formations having a combination of soft, medium and hard formation materials, multiple layers of formation materials and relatively hard stringers disposed throughout one or more layers of formation material. Values of bit walk rate from such simulations may be used to design and/or select drilling equipment for use in forming a directional wellbore.

Using sensors to determine the correct depth for lateral drilling

A method of determining a desirable depth for drilling a horizontal well within an oil reservoir includes the steps of deploying data sensors (120, 124, 128) at discrete depths in a subsurface formation penetrated by a wellbore (104); gathering formation pressure data for the discrete depths and determining the depth of a reservoir from the gathered data. Once the correct depth has been identified, the wellbore, or a lateral bore depending from the wellbore, can be steered into the reservoir. The sensors (124) are deployed in the formation from a drill collar (132) on a drill string (103) by a piston (328) that is exposed to hydraulic pressure which is communicated to piston chamber (332) from a hydraulic system (334).

Compensated shielded actuator apparatus and method

Sensor deployment

A modulated bias unit for rotary drilling

A modulated bias unit for rotary drilling

Down hole drilling tool control mechanism

A rotatable pressure seal

A rotatable pressure seal between a relatively rotatable shaft and body structure comprises two annular sealing discs concentric with the shaft, one disc being mounted on the body structure and the other disc being carried on the shaft the discs having engaging sealing faces formed of polycrystalline diamond or other superhard material. The pressure seal is particularly for use in a modulated bias unit, for controlling the direction of drilling of a rotary drill bit when drilling boreholes in subsurface formations. The bias unit comprises a number of hydraulic actuators spaced apart around the periphery of the unit, and a selector control valve modulates the fluid pressure supplied to each actuator in synchronism with rotation of the drill bit so that, as the drill bit rotates, a thrust member of each actuator is displaced outwardly at the same selected rotational position so as to bias the drill bit laterally and thus control the direction of drilling. The selector control valve is located ...

Pitch sensor for a steerable drill

A pitch sensor tool (216) for a directional boring or drilling machine includes a cylindrical housing adapted to be mechanically coupled to a stem (102) and head (210) of the machine. A pitch sensing device (226) is disposed on or in the housing and transmits a reading of the sensed pitch to the tool (216). The sensing device (216) may be housed in a compartment (224) in the tool and separated therefrom by a shock absorbing device. The sensing device (226) is mounted within the tool (216) such that it remains stationary as the machine drills and this is accomplished by mounting the sensing device (216) in the compartment (224) on wheels (396, fig 3a) or bearings (314, fig 3b) so that the tool (216) can rotate with respect to the sensing device (226).

Real time telemetry

Directional drilling methods and systems employing multiple feedback loops

An affixation and release arrangement for a whipstock and mill

Downhole tool with drive coupling and torque limiter

A method for forming a window in a wellbore using an orienter

A method for forming a window 436 in a wellbore 410 comprises connecting a bottom hole assembly (BHA) to an end of a coiled tubing drill string 415. The BHA comprises a mud motor 400 having a stator and a rotor, a cutting tool 422 and 426, a fluid actuated clutch (300, Fig 2), a whipstock 420, an anchor 438 coupled to the whipstock and an orienter 434 disposed between the stator and the drill string. The orienter comprises a housing (502-505, Fig 5) rotationally coupled to the drill string and having a guide (526, Fig 5), and a piston (518, Fig 5) rotationally coupled to the stator, disposed in the housing, and having a guide (527, Fig 5). The guides cooperate to cause continuous rotation of the piston relative to the housing, when the piston is operated by sufficient fluid flow through the housing, which orients the whipstock through fluid actuation of the clutch. The method further comprises setting the anchor and further actuating the clutch, wherein the motor rotates the cutting tool ...

Rotary steerable tool employing a timed connectioon

A downhole steering tool (100) includes distinct hydraulic and electronics modules (110,160) deployed about a shaft (105). The hydraulics module (110) includes a plurality of hydraulically actuated blades (150). The electronics module (160) includes electronic circuitry configured to control blade actuation. The hydraulics and electronics modules (110,160) are physically and electrically connected to one another via a timed connection (250).

Method and apparatus for casing entry

Downhole adjustable bent motor

A bent sub for use in a bottom hole assembly, between the power section of a mud motor and the drill bit, which can have its bend angle altered from the surface while remaining downhole, and a method for adjusting the bend of a bent sub. A biasing mechanism includes a number of linear actuators radially positioned about the tool centerline and oriented for axial motion. The linear actuators are connected to travelling blocks, which engage the upper end of the inner race a pivoting bearing assembly. The lower end of the inner race is connected to the mud motor bearing assembly. The linear actuators and can be actuated in coordination to tilt the inner race, and hence, the mud motor bearing assembly, to various selectable angles in any radial direction for control of tool face. In an embodiment, the actuators are battery-powered motor-driven lead screws.

Optimized production via geological mapping

A method for optimizing deposit production in a well includes localizing the low resistivity fluid deposits in a geological formation. Once the deposits are mapped, production of the fluid deposit from the geological formation is optimized based on the localizing. The optimization may include adjustment of at least one of a drilling parameter or a production parameter.

Rare earth alloys as borehole markers

A magnetic marking method includes drilling a borehole and marking a position along an uncased section of the borehole with a magnetic marker comprising a magnetic rare earth alloy. A magnetic marker for open hole use includes an unconsolidated mass of high remanence, magnetized material that comprises a magnetic rare earth alloy. The magnetic marker for open hole use also includes a suspension fluid suited for conveying the magnetized material through a drill string bore into an open borehole. A magnetic marker for a casing terminus includes a magnet comprising a magnetic rare earth alloy and an attachment mechanism that secures the magnet to a casing shoe. Such magnetic markers for open hole use or a casing terminus can be used for borehole intersection operations.

Valve-controlled downhole motor

Steerable drill bit arrangement

Sliding mode control techniques for steerable systems

A method for directional drilling including defining, by a sliding mode controller, a sliding hypersurface for reducing a trajectory error in one or more error dimensions; determining a current trajectory error between a current trajectory of a directional drilling tool and a reference trajectory for a curved path, the current trajectory error corresponding to a current error position in the one or more error dimensions; calculating a sliding mode vector originating from the current error position and substantially conforming to the sliding hypersurface in the one or more error dimensions; determining a feedback control input for the directional drilling tool based on the sliding mode vector; instructing the directional drilling tool to generate a wellbore path according to the feedback control input; and updating the current trajectory error based on either a change in position or a change in attitude of the directional drilling tool.

Wedge deflecting device for sidetracking

Real time misalignment correction of inclination and azimuth measurements

A method for determining wellbore trajectory includes determining survey parameters in the wellbore; measuring force parameters) in the wellbore; and correcting the survey parameters using the measured force parameter(s). The downhole measured force parameters may include forces associated with an operation of a steering device such as an internal reaction force, and /or a bending moment. In variants, the method may include measuring a wellbore temperature; measuring a wellbore parameter in addition to the temperature; and correcting a survey parameter using the measured parameter and the measured temperature. These methods may include correcting survey parameters using measured wellbore diameters. Also, a processor in the wellbore may be programmed to perform the correction while in the wellbore and / or control a steering device using measurements provided by a sensor for measuring internal reaction forces.

Spring mechanism for downhole steering tool blades

Hydraulically assisted shear bolt

A whipstock

A whipstock having a longitudinal axis, a first end and a second end, and a tapering deflection section extending at least part of the way between the first end and the second end, wherein: the deflection section has a rear face 4; thedeflection section has a front face 5, the front face having first 8 and second side edges 9 and a width defined between the first and second side edges; a depth of the deflection section is defined as the distance between the rear face and the front face; and at least one point along the length of the deflection surface, the depth of the deflection section at a distance from the first side edge is greater than the depth of the deflection section at the same distance from the second side edge.The depth differences may be defined as percentage proportion of the other side, the cross section of the front face may be curved or straight sided. Methods of forming a whipstock and using the whipstock to form a window in a wellbore casing.

Downhole tool for vertical and directional control

A downhole steering tool includes one or more steering blades 103 selectively extendable from a housing 101. Each steering blade is extended by fluid pressure within a steering cylinder 105. Each steering cylinder is coupled to the interior of a mandrel 12 positioned within the housing through an adjustable orifice 109. The adjustable orifice is moved between an open, a partially open and a closed position. The adjustable orifice comprises a manifold orifice (221 fig 6B) of a manifold (217 fig 6B). A valve ring (231 fig 6B) abuts the manifold. The adjustable orifice may generate one or more pressure pulses to transmit data to the surface.

Apparatus and method for setting a tool in a borehole

Well drilling apparatus and methods

Downhole tool for vertical and directional control

Controlling the sensitivity of a valve by adjusting a gap

"Improvememnts in or relating to steerable rotary drilling systems"

Continuous locating while drilling

Load-bearing universal joint with self-energizing seals for a rotary steerable drilling tool

A rotary steerable drilling tool and a method according to which a universal joint is sealed. In one embodiment, the method includes providing the collar, the shaft, the universal joint, and first and second shoulders between which the universal joint is positioned; providing first and second self-energizing seals between the collar and the shaft on opposite sides of the universal joint; rotating the collar and the shaft; seating the first self-energizing seal against the first shoulder; and seating a second self-energizing seal against the second shoulder. In one embodiment, the universal joint includes a convex surface formed on the shaft; a first concave surface extending circumferentially about the shaft and adapted to mate with the convex surface to carry a first axial load; and a spacer ring defining a second concave surface adapted to mate with the convex surface to carry a second axial load.

Steering system for use with a drill string

Improving geosteering inversion using look-ahead look-around electromagnetic tool

Tool face control of a downhole tool reduced drill string friction

Method and apparatus for casing entry

Whipstock and deflector assembly for multilateral wellbores

Sliding mode control techniques for steerable systems

Avoiding geological bodies that are hazards to drilling operations

Rotary steerable drilling tool and method

Steering actuation mechanism

Adjustable stabilizer for directional drilling.

A stabilizer body is rotatably carried by the stabilizer sub (3), wherein the stabilizer body remains substantially stationery relative to the borehole as the drillstring rotates. At least one stabilizer blade (11)is carried by the stabilizer body, the stabilizer blade being radially extendable from the stabilizer body and into engagement with the sidewall of the borehole. Each stabilizer lade is extendable and retractable from the stabilizer body independently of the others. Each of the blades is guided in slots (17)with inclined bottom (17a)and shifted along the bottom by an electrical motor (19). The motors are fed by batteries (25)which are charged by inductive coupling with charging coils (27)carried by stabiliser sub (3). The movement of the blades is controlled either via telemetry from the surface or by mwd system.

[1,2,4]TRIAZOLO[4,3-B]PYRIDAZINES FOR USE IN THE TREATMENT OF PROLIFERATIVE DISEASES

System and method for making a hole in a object.

[1,2,4]TRIAZOLO[4,3-B]PYRIDAZINES FOR USE IN THE TREATMENT OF PROLIFERATIVE DISEASES

CONTROLLABLE PROPULSION MECHANISM

BOHRVORRICHTUNG MIT EINEM AUS FLEXIBLEM MATERIAL BESTEHENDEN DOPPELWANDIGEN MANTELROHR

SENSOR PROCEDURE FOR TOOL SURFACES

FLEXIBLE BOHRWELLE

Устройство для бурения наклонно-направленных и горизонтальных скважин

Полезная модель относится к области бурения, в частности к устройствам бурения наклонно-направленных и горизонтальных скважин. Бурильное устройство содержит буровое долото, соединенное с валом шпиндельной секции забойного двигателя; забойный двигатель, содержащий шпиндельную секцию, вал которой соединен с буровым долотом; регулятор угла перекоса или косой переводник, соединяющий шпиндельную и двигательную секции; карданный вал, передающий вращение от винтового героторного механизма на вал шпиндельной секции; двигательную секцию, содержащую верхнее ловильное устройство, винтовой героторный механизм, содержащий статор с обкладкой из эластомера и ротор; обратный клапан; переливной клапан; немагнитную буровую трубу, соединенную с забойным двигателем, с размещенным в ней магнитным датчиком инклинометрического зонда, причем регулятор угла перекоса или косой переводник, карданный вал, корпус статора, ротор, ловильное устройство, обратный клапан, переливной клапан выполнены из немагнитного материала. Обеспечивается снижение помех на магнитный зонд телесистемы, повышается точность бурения наклонно-направленных и горизонтальных скважин. 4 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 200 806 U1 (51) МПК E21B 4/02 (2006.01) E21B 7/08 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК E21B 4/02 (2020.08); E21B 7/06 (2020.08) (21)(22) Заявка: 2020127152, 09.07.2019 (24) Дата начала отсчета срока действия патента: 12.11.2020 Приоритет(ы): (22) Дата подачи заявки: 09.07.2019 (45) Опубликовано: 12.11.2020 Бюл. № 32 2 0 0 8 0 6 R U (54) Устройство для бурения наклонно-направленных и горизонтальных скважин (57) Реферат: Полезная модель относится к области бурения, героторный механизм, содержащий статор с в частности к устройствам бурения наклоннообкладкой из эластомера и ротор; обратный направленных и горизонтальных скважин. клапан; переливной клапан; немагнитную Бурильное устройство содержит буровое долото, буровую трубу, ...

Steerable drilling system

A steerable system comprises a fluid powered motor 10 having a rotor 16 and a stator 18 , and a bias arrangement having a plurality of bias pads 34 connected to the stator 18 so as to be rotatable therewith, the bias pads 34 being moveable to allow the application of a side load to the steerable system.

System and method for drilling a deviated wellbore

A system and method for drilling a wellbore along a desired well path is disclosed. The system and method employed a bearing housing which may be connected into a bottom hole assembly to facilitate drilling of deviated wellbore sections. The bearing housing has an internal bore with an axis that can be positioned to form a non-zero angle with the central or longitudinal axis of the bearing housing. The internal bore is designed to rotatably receive a drill bit shaft such that a drill bit is oriented at a desired angle with respect to the bearing housing. Alternatively, the internal bore may be positioned in a sleeve which is received in the bearing housing.

Drill Bit with Adjustable Side Force

A drill bit according to one embodiment includes a center member configured to rotate at a first speed and an outer member disposed outside the center member, wherein the outer member is configured to rotate at a second speed. The drill bit also includes a first cutter disposed on the center member and a second cutter disposed on the outer member, wherein the first speed and second speeds are configured to control a resultant side force of the drill bit.

Steering Mechanism with a Ring Disposed about an Outer Diameter of a Drill Bit

In one aspect of the present invention, a steering assembly for downhole directional drilling comprises a drill bit comprising a cutting portion and an outer diameter. A steering ring disposed around the outer diameter, and at least one biasing mechanism disposed intermediate the outer diameter and the steering ring. The at least one biasing mechanism is configured to move the steering ring with respect to the outer diameter.

System and method for drilling a borehole

A system and method is provided for drilling a wellbore using a rotary drill bit with a bit body having a plurality of mechanical cutters to cut away formation material as the wellbore is formed; and a directed energy mechanism to direct energy into the formation. The energy from the directed energy mechanism is used to enhance the cutting of the mechanical cutters by fracturing surrounding material to facilitate drilling in the direction of the directed energy.

Combination whipstock and completion deflector

Assemblies can be disposed in a subterranean bore. An assembly can include a surface that can divert a cutting tool for creating a branch wellbore and that can divert a completion component for completing the branch wellbore without requiring the assembly or part of the assembly from being removed from a parent wellbore prior to the completion component being diverted.

Method and apparatus for milling a zero radius lateral window in casing

A flexible milling assembly for milling an orifice through a well casing. One embodiment includes a drive yoke, and a plurality of straight and split yoke assemblies—all linked together and to a cutter head with universal blocks that enable the components to pivot relative to each other. A string of joint tubing connected to a prime mover on the surface is used to lower the milling assembly into a well and supply the driving torque. A split shoe coupled to a guide tube is positioned within the well casing where the orifice is to be milled. The milling assembly is guided through a curved passage within the split shoe to bring the cutter head into contact with the well casing. A protector assembly can be provided to enclose and protect the milling assembly when it is tripping into and out of the well casing.

Method and Device for Deploying a Cable and an Apparatus in the Ground

A method and device for deploying a cable and an apparatus in a ground formation having a motherbore, wherein the method comprises positioning a non-rotating drill pipe, a cable and an apparatus in a motherbore tubular; and drilling a lateral opening relatively the motherbore by displacing the drill pipe into the formation with the cable and apparatus attached.

Lateral Well Drilling Apparatus and Method

In one aspect, a drilling apparatus is provided, where the drilling apparatus includes a fluid pump disposed in a main wellbore, a lateral well in fluid communication with the fluid pump and a drilling assembly disposed in the lateral well, wherein the drilling assembly is configured to receive a fluid from the fluid pump to power the drilling assembly and to transport cuttings from the drilling assembly to the main wellbore. The drilling apparatus further includes a sealing mechanism disposed in the main wellbore, the sealing mechanism being configured to direct the cuttings in the fluid downhole of the sealing mechanism.

Systems and Methods for Improved Positioning of Pads

Systems and methods for the automated positioning of pads and orienting of slot templates for the pads. The systems and methods also include automated adjustment of well path plans from a pad to selected well targets.

Earth-boring tools including retractable pads, cartridges including retractable pads for such tools, and related methods

An earth-boring tool may comprise at least one cavity formed in a face thereof. At least one retractable pad residing in the at least one cavity may be coupled to a piston located at least partially within the at least one cavity. Additionally, a valve may be positioned within the earth-boring tool and configured to regulate flow of an incompressible fluid in contact with the piston through an opening of a reservoir. A cartridge may comprise a barrel wall defining a first bore, and a piston comprising at least one retractable pad positioned at least partially within the first bore. The barrel wall and the piston may define a first reservoir within the first bore, and a valve may be positioned and configured to regulate flow through an opening to the first reservoir. Related methods and devices are also disclosed.

Downhole Guiding Tool

The present invention relates to a downhole tool for guiding a device into a side track of a borehole, the tool having a tool axis and comprising a tool housing connected to an energy source. The invention further relates to a method for moving the downhole tool into a side track.

Rotary Steerable Assembly Inhibiting Counterclockwise Whirl During Directional Drilling

A bottom hole assembly avoids damaging vibrations that can develop during directional drilling with a rotary steerable system. The assembly has a drill bit, a first collar that rotates with the bit, a rotary steerable tool that controls the bit's trajectory, and a second collar that rotates with the drill string. The first collar between the bit and the tool defines a bend that deflects the bit from the first collar's axis. During operation, this bend causes portion of the assembly to engage the borehole wall to inhibit counterclockwise (CCW) bit whirl by promoting clockwise whirl in the assembly, generating friction against the borehole wall, and dampening vibrations. By inhibiting CCW bit whirl, other damaging vibrations such as CCW whirl in the drill string can also be prevented up the borehole. Alternatively, only the second collar between the tool and the drill string may define the bend, or both collars can define bends.

Steering head

A steering head for use with a casing, the steering head having a generally cylindrical body with a first body end with a lead edge, a second body end with a rear edge, and a body surface extending from the lead edge to the rear edge, an outer tube with an internal side generally facing the body surface, the outer tube extending from the first body end to the second body end, and a steering flap disposed on an external side of the outer tube having a first flap face facing radially inwardly and a second flap face facing radially outwardly. A biased hinge is secured to both the outer tube and the steering flap, the biased hinge being operative to retract the steering flap into a retracted position from an extending position.

Apparatus and Method for Transitioning a Tool Around the Radius of a Whipstock with Internal Guide Channel

A method for transitioning a rigid or semi-rigid tool around a whipstock having a curved internal guide channel. The apparatus and method entail the tool meeting specific proportion criteria relative to the narrowest part of the curved guide channel through which it must pass and relative to the length and width of the tool. In lateral borehole related applications, if the wider ends portions of the tool are of approximately the same diameter of the borehole, the tool can be stabilized as it travels through the guide channels and creates and transitions a lateral borehole. The disclosure is particularly suited to tools that are rotated through the curved whipstock and in certain applications offers such tools the benefit of a reduced number of segments or links and hence reduced costs and failure points. The method described herein can be used with a variety of tool types and for a variety of purposes and may increase the applicability of tools otherwise only feasible on wellbores of a larger diameter.

Oil Operated Rotary Steerable System

A technique facilitates steering of rotary steerable systems when conducting directional drilling operations. A rotary steerable system is combined with a pressurized oil system which delivers oil to a piston actuated mechanism. The pressurized oil provides precise, long-lasting control over the orientation of the bottom hole assembly and the drill bit to facilitate directional drilling of boreholes through subterranean formations. 1. A system for drilling a borehole , comprising:a drill bit;a rotary steerable drilling system to which the drill bit is coupled in a bottom hole assembly, the rotary steerable drilling system having a piston actuated mechanism which rotates with the rotary steerable drilling system and which selectively controls at least one of the directional bias and the axial orientation of the drill bit; anda pressurized oil system connected to the piston actuated mechanism, the pressurized oil system providing pressurized oil to pistons in the piston actuated mechanism.2. The system is recited in claim 1 , wherein the rotary steerable drilling system comprises a swivel.3. The system is recited in claim 1 , wherein the rotary steerable drilling system comprises a lower stabilizer.4. The system is recited in claim 1 , wherein the pressurized oil system comprises an oil pump.5. The system is recited in claim 4 , wherein the flow of oil from the oil pump to the piston actuated mechanism is controlled by a valve system.6. The system as recited in claim 5 , wherein the oil pump is driven by an electric motor.7. The system as recited in claim 6 , wherein the electric motor receives electrical power from a mud powered alternator.8. The system as recited in claim 5 , wherein the valve system comprises a plurality of bistable actuators.9. A method of drilling a borehole claim 5 , comprising:rotating a drill bit with a rotary steerable system;adjusting the orientation of the rotary steerable system and thus the drill bit with pressurized oil supplied to the ...

Methods For Geosteering A Drill Bit In Real Time Using Drilling Acoustic Signals

Disclosed is an apparatus, method, and program product for steering a drill bit within a pay zone in a lateral well. The method includes receiving acoustic signature data from a downhole processor assembly. The acoustic signature data includes an amplitude spectrum and one or more acoustic characteristics evaluated from an acoustic signal provided by a sensor arranged adjacent to a drill bit and generated in real-time as a result of rotational contact of the drill bit with encountered rock in the lateral well during drilling. The method further includes comparing the received real-time acoustic signature data to predetermined acoustic signatures determined for a plurality of rock samples, and identifying a lithology type of the rock being encountered by the drill bit based on the comparison. Further, the method includes steering the drill bit in a predefined direction, in real-time, based on the identified lithology type of the rock, for maintaining the drill bit within the pay zone of the lateral well. 1. A method for steering a drill bit within a pay zone in a lateral well , the method comprising:receiving acoustic signature data from a downhole processor assembly, wherein the acoustic signature data comprises an amplitude spectrum and one or more acoustic characteristics evaluated from an acoustic signal provided by a sensor arranged adjacent to a drill bit and generated in real-time as a result of rotational contact of the drill bit with encountered rock in the lateral well during drilling;comparing the received real-time acoustic signature data to predetermined acoustic signatures determined for a plurality of rock samples;identifying a lithology type of the rock being encountered by the drill bit based on the comparison; andsteering the drill hit in a predefined direction, in real-time, based on the identified lithology type of the rock, for maintaining the drill bit within the pay zone of the lateral well.2. The method of claim 1 , further comprising: ...

Boring tool control using remote locator

A drilling system performs underground boring using a drill rig and a boring tool which is configured for moving through the ground under control of the drill rig to form an underground bore. A monitoring arrangement, forming part of the system, includes a detection arrangement at the drill rig for monitoring at least one operational parameter to produce a data signal relating to at least one of a utility to be installed in the underground bore, the drill rig and the boring tool. A portable device forms another part of the system for receiving the data signal relating to the operational parameter for use by the portable device. A communication arrangement, for example using telemetry, transfers the data signal from the drill rig to the portable device. The operational parameter may be monitored for the purpose of preventing equipment failure.

Rotary Steerable Push-the-Bit Drilling Apparatus with Self-Cleaning Fluid Filter

A steerable drilling apparatus includes a control system inside a cylindrical housing connected to a drill bit having radially-extendable pistons. A fluid-metering assembly directs a piston-actuating fluid into fluid channels leading to respective pistons. The control system controls the fluid-metering assembly to allow fluid flow to selected pistons, causing the actuated pistons to temporarily extend in the opposite direction to a desired wellbore deviation, thereby deflecting the drill bit away from the borehole centerline. An upper member in the fluid-metering assembly can be moved to stabilize, steer, and change TFA within the drill bit. The control system and drill bit are connected so as to facilitate removal to change the drill bit's steering section and cutting structure configuration or gauge simultaneously. The apparatus may incorporate a fluid filter module mounted to the control system. The pistons may incorporate auxiliary cutting elements to provide near-bit reaming capability.

APPARATUS FOR DIRECTIONAL CONTROL OF A DRILLING TOOL

A directional-control apparatus for a drilling tool, in which the direction of the drilling tool during the drilling of a borehole is controlled by means of at least one steering body which is moved radially against the wall of the borehole, the movement of the at least one steering body relative to the centre axis of the directional-control apparatus being adjustable in order to steer the drilling tool in a desired direction and at a desired deflection, and at least one electrically operated actuator being connected via at least one set of transmission elements to the at least one steering body and arranged to move the at least one steering body into a position relative to the centre axis of the directional-control apparatus, the relative position having the effect that the drilling tool is steered in the desired direction and at the desired deflection. 1. A directional-control apparatus for a drilling tool , the directional-control apparatus comprising:a centre axis;an intermediate housing, wherein at least one steering body fits into a respective bore in the intermediate housing being adjustable in a radial direction relative to the intermediate housing and against a wall of a borehole, the at least one steering body, at an end portion facing the centre axis, being supported on an outer eccentric sleeve which is rotatably supported on an inner eccentric sleeve which is rotatably supported on a mandrel;a first electrically operated actuator for rotation of the outer eccentric sleeve; anda second electrically operated actuator for rotation of the inner eccentric sleeve and the outer eccentric sleeve, wherein the drilling tool is steered in a desired direction and at a desired deflection.2. The directional-control apparatus according to claim 1 , wherein the at least one steering body is provided with a hook which projects axially relative to the centre axis and into a groove in the outer eccentric sleeve.3. The directional-control apparatus according to claim 1 , ...

SYSTEM AND METHOD TO FACILITATE THE DRILLING OF A DEVIATED BOREHOLE

A system and method for facilitating the drilling of a deviated borehole. The system and method employ a flexible conveyance. A hydraulic actuation assembly is coupled to the flexible conveyance and a whipstock is releasably coupled to the hydraulic actuation assembly. The whipstock and hydraulic actuation assembly are conveyed downhole in the wellbore. The hydraulic actuation assembly provides a hydraulic fluid under pressure to anchor the whipstock. 1. A system for facilitating drilling of a deviated wellbore , comprising:a flexible line conveyance;a hydraulic actuation assembly coupled to the flexible line conveyance; anda whipstock releasably coupled to the hydraulic actuation assembly, the whipstock and hydraulic actuation assembly arranged and designed to be conveyed downhole into a wellbore, the hydraulic actuation assembly providing a hydraulic fluid under pressure to anchor the whipstock in the wellbore.2. The system of claim 1 , wherein the flexible line conveyance is a multi-conductor wireline cable that is in electrical communication with the hydraulic actuation assembly and that withdraws the hydraulic actuation assembly from the wellbore following release of the whipstock.3. The system of claim 1 , wherein the hydraulic actuation assembly comprises a pump driven by a motor to pressurize the hydraulic fluid.4. The system of claim 1 , wherein the hydraulic actuation assembly comprises a firing head and an explosive material arranged and designed to pressurize the hydraulic fluid.5. The system of claim 1 , wherein the flexible line conveyance is a slickline cable that withdraws the hydraulic actuation assembly from the wellbore following release of the whipstock.6. The system of claim 5 , wherein the hydraulic actuation assembly comprises a pump driven by a motor to pressurize the hydraulic fluid claim 5 , the motor being powered by a downhole power source.7. The system of claim 5 , wherein the hydraulic actuation assembly comprises a firing head and an ...

Directional drilling target steering apparatus and method

An apparatus and method are used in conjunction with a system for performing horizontal directional drilling, the system including a drill string extending from a drill rig to a boring tool such that the boring tool is steerable based on a roll orientation. The system also includes an arrangement for generating steering commands for guiding the boring tool to a target position. Responsive at least in part to the steering commands, a display is configured to selectively indicate each of a rotate command, a push command and a spin command. A steering indicator is described which indicates a current roll orientation of the boring tool. A 3-D grid can be animated and centered on either a steering or target indicator. Rounding of a steering command ratio can limit the display of target roll orientations to only those that a given boring tool transmitter is capable of sensing and indicating.

HYDRAULIC BRAKE FOR DRILLING-BIT

Method for blocking/braking at least one conical inlet wheel of a drilling-bit of a drilling tool, said method consisting in using at least one toothed wheel () of said drilling-bit as an element for driving a hydraulic pump (P) which pumps in a closed circuit (), said circuit including a controlled distributor () in order to take up either an open position or a closed position; such that, in the open position, the pump runs freely without absorbing energy, and that, in the closed position, said pump (P) is hydraulically blocked, which blocks the rotation of the toothed wheel (). 1179. Method for controlling a toothed wheel of a drilling-bit , in which method the toothed wheel () of said bit is used as an element for driving a hydraulic pump (P) which pumps in a closed loop hydraulic circuit () , said circuit including a controlled sealing member () , the method including the steps of:{'b': '1', 'controlling the sealing member in a forward direction in order to suppress the hydraulic braking force exerted onto the toothed wheel (), and'}{'b': '1', 'controlling the sealing member in a reverse direction in order to increase the hydraulic braking force exerted onto the toothed wheel ().'}2. Method according to claim 1 , in which the drilling-bit is rotated claim 1 , the method including phases for braking the toothed wheel alternated with phases for releasing the toothed wheel.32012078691. Drilling-bit including a drilling pipe () claim 1 , three toothed wheels () mounted in a pivoting manner on said drilling pipe and at least three hydraulic brakes arranged in the drilling pipe () claim 1 , in which each hydraulic brake includes a closed loop hydraulic circuit () claim 1 , a hydraulic pump (P) arranged in the closed loop hydraulic circuit in order to suck up a hydraulic fluid in a first portion () of the hydraulic circuit and to pump out the hydraulic fluid in a second portion () of the hydraulic circuit and a controlled sealing member () arranged in the closed loop ...

Rotary Steerable Tool Actuator Tool Face Control

A technique facilitates controlling the direction of drilling when using a rotary steerable system to drill a borehole. The method comprises processing parameters related to operation of a rotatable collar of the rotary steerable system. The parameters are used in cooperation with characteristics of actuators to control the positioning of an actuator tool face which, in turn, controls the drilling orientation of the rotary steerable system. 1. A method for controlling a drilling direction of a rotary steerable system having a rotatable collar and a sleeve pivoted by bi-stable valve actuators to control the drilling direction , comprising:determining an angular collar speed of a rotary steerable system;establishing a transition angle interval for each bi-stable valve actuator as each bi-stable valve is switched between off and on states; andusing the angular collar speed and the transition angle of each bi-stable valve actuator to control a desired dwell angle interval for each bi-stable valve actuator.2. The method as recited in claim 1 , further comprising employing four bi-stable valve actuators positioned at 90° offsets with respect to the rotatable collar.3. The method as recited in claim 2 , wherein using comprises triggering on and off states of the four bi-stable valve actuators via latched logic with a desired angular tolerance.4. The method as recited in claim 1 , wherein determining comprises using an actuator tool face controller to process a plurality of inputs.5. The method as recited in claim 4 , wherein determining comprises processing a collar angular position estimate claim 4 , a collar angular rate estimate claim 4 , and a plurality of additional parameters.6. The method as recited in claim 1 , further comprising sensing a pivot position of the sleeve.7. A method of controlling an actuator tool face in a rotary steerable system claim 1 , comprising:inputting a demand tool face;estimating a collar angular position and a collar angular rate for ...

Braking Mechanism for a Downhole Tool

This invention relates to braking mechanism for a downhole tool such as a steering tool. The braking mechanism comprises: 1. A braking mechanism for a downhole tool , the braking mechanism having:a body adapted for mounting upon the tool;at least one braking member which is movably mounted upon the body;a resilient biasing means biasing the braking member away from the body; anda damping mechanism connected to the braking member, the damping mechanism providing a damping force opposing movements of the braking member relative to the body, the damping force being dependent upon the rate of movement of the braking member.2. A braking mechanism according to in which the damping mechanism is hydraulic claim 1 , the body having a fluid conduit including a cylinder claim 1 , the braking member being connected to a drive piston which is movably located within the cylinder.3. A braking mechanism according to in which the fluid conduit includes at least one damping member which restricts the flow of fluid along the conduit.4. A braking mechanism according to in which the fluid conduit is connected to a second cylinder which accommodates a balancing piston.5. A braking mechanism according to in which the drive piston and the balancing piston are located at opposed ends of the fluid conduit claim 4 , with the damping member located therebetween.6. A braking mechanism according to in which the drive piston and the balancing piston are sealed to the fluid conduit so that they enclose a volume of hydraulic fluid therebetween.7. A braking mechanism according to in which the side of the balancing piston which does not face the drive piston is exposed to the pressure within the borehole.8. A braking mechanism according to in which the second cylinder is located adjacent to the edge of the body claim 7 , the body having at least one opening through which claim 7 , in use claim 7 , borehole fluid can enter the second cylinder.9. A braking mechanism according to in which the resilient ...

Downhole Tool Piston Assembly

A piston assembly may comprise a housing with a wall, and at least one chamber formed in the wall. A piston may be disposed within the chamber and at least one passageway may pass through the piston. At least one pin may be disposed within the passageway and attached to the chamber, and the piston may be free to translate relative to the pin.

CEMENTING WHIPSTOCK APPARATUS AND METHODS

A system and method facilitate sidetracking by eliminating one or more trips downhole. A sidetracking system includes a whipstock assembly and a stinger assembly. The stinger assembly has a stinger which extends at least partially through the whipstock assembly. The stinger is coupled to a sub of the sidetracking system by a releasable latch mechanism, such as a shear pin or collet. 1. A sidetracking system for forming a deviated wellbore , comprising: a stinger assembly having a stinger extending at least partially through the whipstock assembly, the stinger being releasably coupled to the whipstock assembly by a latch mechanism; and', 'a ball seat carrier having an extended portion releasably coupled within an interior of the latch mechanism., 'a whipstock assembly having a whipstock;'}2. The sidetracking system of claim 1 , wherein the latch mechanism is arranged and designed to be releasable only when the ball seat carrier is not present in the interior of the latch mechanism.3. The sidetracking system of claim 1 , wherein the ball seat carrier is coupled to the interior of the latch mechanism by a shear member.4. The sidetracking system of claim 1 , further comprising an anchor assembly coupled to the whipstock assembly.5. The sidetracking system of claim 4 , wherein the anchor assembly is arranged and designed to anchor the whipstock assembly in an open hole.6. The sidetracking system of claim 1 , wherein the latch mechanism is a collet.7. The sidetracking system of claim 1 , further comprising a debris screen positioned downhole of the ball seat carrier and configured to catch the ball seat carrier when released from the interior of the latch mechanism.8. The sidetracking system of claim 1 , wherein the ball seat carrier is released after a ball launched from an uphole location seats on a ball seat disposed in the ball seat carrier.9. A method of drilling a deviated wellbore claim 1 , comprising:deploying a sidetracking system downhole in a wellbore; the ...

DIRECTIONAL DRILLING SYSTEMS

A directional drilling system for use in drilling a wellbore can include a bit deflection assembly with a bit axis deflection mechanism which applies a deflecting force to a shaft connected to a drill bit. The deflecting force may deflect the shaft, without being reacted between the deflection mechanism and the drill bit. The deflecting force may deflect the shaft between the drill bit and a radial bearing which maintains the shaft centered in the bit deflection assembly. The deflection mechanism may both angularly deflect and laterally displace the bit axis in the deflection mechanism. 1. A directional drilling system for use in drilling a wellbore , the system comprising:a bit deflection assembly including a bit axis deflection mechanism which applies a deflecting force to a shaft connected to a drill bit, andwherein the deflecting force deflects the shaft without being reacted between the deflection mechanism and the drill bit.2. The system of claim 1 , wherein the deflection mechanism is interconnected between the drill bit and an articulation which permits deflection of the shaft.3. The system of claim 2 , wherein the articulation comprises a constant velocity joint.4. The system of claim 2 , wherein the articulation comprises a splined ball joint.5. The system of claim 2 , wherein the articulation comprises a flexible torsion rod.6. The system of claim 1 , wherein the deflection mechanism rotates the bit axis about an inclined axis.7. The system of claim 6 , wherein the inclined axis is formed in an inclined cylinder which is rotated about the shaft.8. The system of claim 1 , wherein the deflection mechanism laterally displaces the bit axis.9. The system of claim 1 , wherein the deflection mechanism angularly deflects the bit axis.10. The system of claim 1 , wherein the deflection mechanism angularly deflects and laterally displaces the bit axis.11. The system of claim 1 , wherein the deflection mechanism deflects the shaft in a succession of separate steps.12 ...

APPARATUS AND METHOD FOR LATERAL WELL DRILLING

An apparatus and method for penetrating earth strata surrounding a wellbore including a nozzle assembly, a flexible tubing connected to the nozzle assembly, and a means to position the nozzle assembly downhole in a substantially horizontal direction into earthen strata, such that the nozzle assembly is connected to one end of the flexible tubing. Embodiments can provide horizontal jetting into the earth's strata from both cased and uncased wells utilizing a rotating, swirling, pulsing or cavitating nozzles which can keep a relatively cuttings free downhole environment. 1. An apparatus for cutting into an earthen formation , comprising:a nozzle assembly having a main body that substantially circumscribes a rotatable shaft to which is attached a nozzle head;wherein one end of the nozzle assembly is connected to one end of a flexible tubing and the other end of the flexible tubing is coupled to a pumping unit capable of pumping gases, foams, fluids, or a combination thereof through the flexible tubing and out the nozzle assembly; anda means to position the nozzle assembly into earthen strata in a substantially horizontal direction;wherein a fluid bearing positioned between the nozzle body and the rotatable shaft is created in the presence of flow through the nozzle assembly.2. The apparatus of claim 1 , wherein the rotatable shaft is in fluid communication with the flexible tubing so as to allow the flexible tubing to be in fluid communication with the attached nozzle head.3. The apparatus of wherein a portion of the rotatable shaft extends out of the main body and is attached to the nozzle head.4. The apparatus of claim 1 , wherein the rotatable shaft is in the form of a cone and has a hole through the center along its longitudinal axis.5. The apparatus of claim 1 , wherein the nozzle head comprises at least two orifices.6. The apparatus of claim 5 , wherein at least one orifice is skewed with respect to the axis of rotation of the nozzle head so as to provide a ...

NAVIGATION SYSTEM

The present invention relates to a navigation system for navigating a drill head out of or in collision with a casing in a first borehole. The system comprises a drill head drilling a second borehole; a drill string made of several tubulars mounted into one tubular string by means of a connection means, the drill head being mounted onto one end of the drill string; and a plurality of logging units arranged with one logging unit in or in relation to each connection means. Each logging unit comprises a data transmitter and a data receiver for sending and receiving data between the logging units; and a detector, at least one logging unit comprising an emitter. Furthermore, the invention relates to a navigation method using the navigation system. 11234. A navigation system () for navigating a drill head () out of or into collision with a casing () in a first borehole () , comprising:{'b': '5', 'a drill head drilling a second borehole (),'}{'b': 6', '7', '8, 'a drill string () made of several tubulars () mounted into one tubular string by means of a connection means (), the drill head being mounted onto one end of the drill string,'}{'b': '9', 'a plurality of logging units () arranged with one logging unit in each connection means,'} [{'b': 10', '11, 'a data transmitter () and a data receiver () for sending and receiving data between the logging units, and'}, {'b': '13', 'a detector (),'}], 'each logging unit comprising{'b': '12', 'at least one logging unit comprising an emitter (),'}wherein the emitter of one logging unit emits a signal which is reflected by the casing and detected by the detector of at least two logging units so that a position and/or an extension direction of the casing can be found by means of trigonometry.2141516. A navigation system according to claim 1 , further comprising a communication pack () arranged in one of the connection means claim 1 , dividing the drill string into a top part () and a bottom part () claim 1 , the drill head being ...

CONTINUOUS ROTARY DRILLING SYSTEM AND METHOD OF USE

A drilling system has a drill string that is made up of tubular segments of coiled tubing joined together by connectors. The connectors can be selectively changed between locked and unlocked configurations. When in the unlocked configuration adjacent tubular segments rotate with respect to one another, and when in the locked configuration the tubular segments are rotationally affixed. The connectors include clutch members coupled to each tubular segment, that axially slide into a slot formed in an adjacent tubular segment to rotationally lock the adjacent segments. A Kelly bushing and rotary table rotate the drill string; and an injector head is used to insert the drill string through the Kelly bushing and rotary table and into a wellbore. While the drill string is inserted through the bushing and table, the connectors are set into the locked configuration so that all tubular segments from the rotary table downward are rotationally affixed. 1. A method of forming a wellbore in a subterranean formation comprising:a. providing a tubular string comprising tubular segments, and connectors axially adjoining adjacent segments that are selectively changing between an unlocked configuration where the adjacent segments are rotatable with respect to one another and a locked configuration where the adjacent segments are rotationally affixed to one another;b. changing connectors from the unlocked configuration to the locked configuration to form a substantially rotationally cohesive portion of the tubular string;c. inserting the substantially rotationally cohesive portion of the tubular string in the wellbore; andd. rotating the substantially rotationally cohesive portion of the tubular string, so that when a drill bit is provided on an end of the tubular string, cuttings are removed from the subterranean formation to create the wellbore.2. The method of claim 1 , wherein step (d) comprises engaging the tubular string with a rotary drive system disposed above an opening of the ...

CONTROLLABLE DEFLECTION HOUSING, DOWNHOLE STEERING ASSEMBLY AND METHOD OF USE

This invention relates to a controllable deflection tool. The controllable deflection tool is likely to have its greatest utility as part of a downhole assembly to steer a drill bit during drilling for oil and gas. There is provided a controllable deflection tool having a first end and a second end, the tool having: a conduit for a working fluid; a rotary element adapted for rotation within the tool; a deflection member; a vane motor configured to rotate the deflection member relative to the rotary element; and a valve for controlling the flow of working fluid to the vane motor. There is also provided a downhole steering assembly and a method of steering a downhole drilling assembly incorporating the controllable deflection tool. 1. A controllable deflection tool having a first end and a second end , the tool having:a conduit for a working fluid;a rotary element adapted for rotation within the tool;a deflection member;a vane motor configured to rotate the deflection member relative to the rotary element; anda valve for controlling the flow of working fluid to the vane motor.2. A controllable deflection tool according to in which the deflection member is a bent housing.3. A controllable deflection tool according to in which the rotary element is an annular sleeve.4. A controllable deflection tool according to in which the annular sleeve surrounds a part of a rotatable shaft.5. A controllable deflection tool according to in which there is a gap between the sleeve and the shaft claim 4 , the gap providing a part of the conduit.6. A controllable deflection tool according to in which the vane motor comprises an eccentric housing within which is located a body carrying at least three vanes claim 1 , the body being connected to the rotary element to rotate with the rotary element claim 1 , the body being rotatable relative to the eccentric housing claim 1 , the vanes being movably mounted upon the body so that they remain in contact with the eccentric housing during ...

Boring ram

A ram for boring through soil, comprising an elongate body terminating at one end in a head, wherein during use the head is separated from the body to form a channel therebetween for the soil to pass through from one side of the ram to another side of the ram.

METHODS AND SYSTEMS FOR DRILLING

A method of controlling a direction of drilling of the drill string used to form an opening in a subsurface formation, comprises varying a speed of the drill string during rotational drilling such that the drill string is at a first speed during a first portion of the rotational cycle and at a second speed during a second portion of the rotational cycle wherein the first speed is higher than the second speed, and wherein operating at the second speed in the second portion of the rotational cycle causes the drill string to change the direction of drilling. 1. A method of controlling a direction of drilling of the drill string used to form an opening in a subsurface formation , comprising:varying a speed of the drill string during rotational drilling such that the drill string is at a first speed during a first portion of the rotational cycle and at a second speed during a second portion of the rotational cycle wherein the first speed is higher than the second speed, and wherein operating at the second speed in the second portion of the rotational cycle causes the drill string to change the direction of drilling.2. The method of wherein the second portion of the rotational cycle is the portion of the rotational cycle in which a toolface of the drill string faces a desired direction for the drill string to proceed.3. The method of wherein varying the speed of the drill string comprises making a course correction.4. The method of wherein the course correction is made following a straight ahead lateral.5. The method of wherein varying the speed of the drill string comprises automatically determining a rotation speed for at least one portion of the rotational cycle.6. The method of wherein varying the speed of the drill string comprises automatically determining a sweep angle for at least one portion of the rotational cycle.7. The method of claim 1 , further comprising:establishing at desired turn rate for the drill string; andautomatically determining, based on the ...

Mechanism For Providing Controllable Angular Orientation While Transmitting Torsional Load

A mechanism for adjusting the relative angular orientation between two coaxial components includes a housing, a mandrel disposed in the housing, a lower ratchet member disposed around the mandrel, wherein a lower engagement interface between the lower ratchet member and the mandrel restricts relative rotation between the lower ratchet member and the mandrel, an upper ratchet member disposed around the mandrel, wherein an upper engagement interface between the upper ratchet member and the mandrel restricts relative rotation between the upper ratchet member and the mandrel, and a central sleeve disposed around the mandrel, wherein an outer engagement interface between the central sleeve and the housing restricts relative rotation between the central sleeve and the housing, wherein the central sleeve has an upper position configured to transmit torque between the upper ratchet member and the housing and a lower position configured to transfer torque between the lower ratchet member and housing. 115.-. (canceled)16. A mechanism for adjusting the relative angular orientation between two coaxial components , said mechanism comprising:a housing;a mandrel disposed in the housing;a lower ratchet member disposed around the mandrel, wherein a lower engagement interface between the lower ratchet member and the mandrel restricts relative rotation between the lower ratchet member and the mandrel;an upper ratchet member disposed around the mandrel, wherein an upper engagement interface between the upper ratchet member and the mandrel restricts relative rotation between the upper ratchet member and the mandrel; anda central sleeve disposed around the mandrel, wherein an outer engagement interface between the central sleeve and the housing restricts relative rotation between the central sleeve and the housing;wherein the central sleeve has an upper position configured to transmit torque between the upper ratchet member and the housing and a lower position configured to transfer ...

METHOD AND SYSTEM FOR RADIALLY EXPANDING A TUBULAR ELEMENT AND DIRECTIONAL DRILLING

The invention relates to a system and method for radially expanding a tubular element. The method comprises the steps of bending the tubular element radially outward and in axially reverse direction so as to form an expanded tubular section extending around an unexpanded tubular section, wherein bending occurs in a bending zone; increasing the length of the expanded tubular section by pushing the unexpanded tubular section in axial direction relative to the expanded tubular section; operating a drill string, which extends through the unexpanded tubular section and is provided with a drill bit at a downhole end thereof, to drill a borehole; and operating directional drilling means, which are coupled to the drill string, to deviate the borehole and direct the borehole along a predetermined path. 1. A method for radially expanding a tubular element , the method comprising the steps of:bending the tubular element radially outward and in axially reverse direction so as to form an expanded tubular section extending around an unexpanded tubular section, wherein bending occurs in a bending zone;increasing the length of the expanded tubular section by pushing the unexpanded tubular section in axial direction relative to the expanded tubular section;operating a drill string, which extends through the unexpanded tubular section and is provided with a drill bit at a downhole end thereof, to drill a borehole; andoperating directional drilling means, which are coupled to the drill string, to deviate the borehole and direct the borehole along a predetermined path.2. The method of claim 1 , wherein the directional drilling means include reference means for indicating a relative distance between the drill bit and the bending zone.3. The method of claim 2 , wherein the reference means include:a (mechanical) positioning tool; anda pressure release system.4. The method of claim 3 , wherein the positioning tool includes at least one gripper for engaging the bending zone.5. The method of ...

Downhole apparatus, device, assembly and method

The invention relates to a wellbore-lining tubing comprising at least one window pre-formed in the wall of the tubing and a device for selectively generating a fluid pressure pulse, and to a method of forming a lateral wellbore employing such a tubing. In an embodiment, a wellbore-lining tubing ( 130 m ) is disclosed which comprises: a tubing wall ( 32 m ), an internal fluid flow passage ( 30 m ), and at least one window ( 154 m ) pre-formed in the wall of the tubing; a device ( 34 m ) for selectively generating a fluid pressure pulse, the device located at least partly in a space ( 36 m ) provided in the wall of the tubing; and a coupling ( 190 ) for receiving a deflection tool ( 192 ) so that the deflection tool can be secured to the tubing and employed to divert a downhole component ( 202 ) through the window in the tubing wall.

DIRECTIONAL DRILLING

A method of controlling the direction of drilling comprising: providing a drill bit comprising mechanical cutting means forming a bit face and a plurality of nozzles for ejecting drilling fluid arranged at different azimuthal positions with respect to the bit face, and an intermediate space between an inlet port of the drill bit and the plurality of nozzles; rotating the drill bit while passing drilling fluid comprising solids through the intermediate space and the plurality of nozzles, so as to deepen the borehole; and modifying solids concentration of drilling fluid portions flowing through the plurality of nozzles while rotating the drill bit, so that the solids concentration, for the drilling fluid portion flowing through each of the nozzles, is relatively increased when the respective nozzle is in a selected first angular sector of the borehole bottom, as compared to a second angular sector.

Wellbore anchoring system

A hydraulic wellbore anchoring system for use with whipstocks or other tools in either cased or open hole wellbores. The anchoring system includes an upper slip system and a lower slip system. The anchor system may be set using hydraulic pressure and withdrawn by a predetermined upward force. While the slips of the upper and lower slip systems may be set substantially simultaneously, the anchoring system enables sequential disengagement of the slips to reduce the force required for withdrawal.

Steerable System

A steerable system comprises a first rotatable housing (), a second rotatable housing () connected to the first rotatable housing () by an adjustable joint (), a cam member () held against rotation, in use, and cam follower means cooperable with the cam member () and moveable to drive the second rotatable housing () for movement relative to the first rotatable housing () about the adjustable joint (). 1. An apparatus , comprising:a motor carried by to drill string within a borehole extending into a subterranean formation;a first housing operable to rotate m response to rotation of the motors;a second housing operable to rotate in response to rotation of the first housings;a bit operable to rotate in response to rotation of the second housing;as joint coupled between the first and second housings and operable to orient the bit relative to the motor; anda sleeve surrounding part of the first housing and rotationally fixed relative to the borehole during rotation a the first housing.2. The apparatus of wherein the first housing is coupled to the sleeve by bearings permitting rotation of the first housing relative to the sleeve.3. The apparatus of further comprising an internal chamber defined by the sleeve and the first housing claim 2 , wherein the bearings fluidly isolate the internal chamber from the annulus defined between the apparatus and the wall of the borehole.4. The apparatus of further comprising:a cam member positioned in the internal chamber;linear actuators coupled to the sleeve and operable to adjust an orientation of the cam member relative to the sleeve.5. The apparatus of wherein the cam member comprises a swash plate.6. The apparatus of wherein the cam member cannot rotate relative to the sleeve.7. The apparatus of further comprising a spherical bearing coupled between the cam member and the first housing.8. The apparatus of wherein the linear actuators are electrically claim 4 , electromagnetically claim 4 , or hydraulically operable.9. The ...

WEDGE DEFLECTING DEVICE FOR SIDETRACKING

A wedge deflecting device useful in drilling and workover operations on oil and gas wells. The device includes a cutting tool connected to the upper portion of the wedge by means of the shear element provided with an external circular groove, located below the wedge deflecting surface, and with a transverse slot in its upper part, the cutting tool having a longitudinal cylinder and a downwards spring-biased piston, inserted into the cylinder; above lower seal elements and below the spring the piston has a wedge nose which corresponds to a transverse slot of the shear element. Below the piston, the cylinder communicates with the drill string and the supply tube, and above-the-piston space communicates with the borehole interior. The cutting tool is provided with a radial inward spring-biased locking element, arranged to be able to fix the piston in its top position, where the piston is located above the shear element. 1a deflecting wedge with a hydraulic fixing mechanism, with a sub located therebetween;a movable joint, connecting the sub and the wedge;a deflecting wedge fixing unit, installed in the sub and comprising a fixing element and a piston-rod assembly, located in the hydraulic cylinder, communicating with the fixing unit cavity, besides, the upper part of the rod is arranged so that it can interact with the lower portion of the wedge from the side of its deflecting surface;a cutting tool, run-in on the drillstring and connected to the upper portion of the wedge by means of the shear element; a fluid supply tube, communicating the drillstring internal space and the cutting tool cavity with the fixing unit cavity, furthermore, the lower portion of the wedge from its deflecting surface side is arranged as a downward wedge nose with a bevel plane, directed oppositely to the wedge deflecting surface;herewith, the upper part of the rod is made in form of a side cut, interacting with a wedge bevel plane, with the fixing element positioned inbetween;whereinthe ...

DRILLING SYSTEM, BIASING MECHANISM AND METHOD FOR DIRECTIONALLY DRILLING A BOREHOLE

A drilling system for directional drilling of a borehole includes a biasing mechanism having a pivot associated with a lower bearing assembly, an offset mechanism associated with an upper radial bearing assembly, and a toolface controller, whereby the angular relationship of a drill bit and its toolface angle may be actively managed. 1. A biasing mechanism comprising:a bearing section, including a housing having a lower end and a longitudinal axis, including a lower bearing assembly and an upper radial bearing assembly within the housing, the housing;an offset shaft, having a longitudinal axis, an upper end, and a lower end, independently rotatable within the housing, the offset shaft having a first portion, including the lower end of the offset shaft, extending outwardly from the lower end of the bearing section housing, a second portion disposed within the bearing section housing associated with the lower bearing assembly, and a third portion disposed within the bearing section housing associated with the upper radial bearing assembly; anda biasing assembly associated with the bearing section to bias the offset shaft to be angularly displaced to permit directional orientation of a downhole assembly, the biasing assembly including: a pivot having a mid-point, associated with the lower bearing assembly of the bearing section; and an offset mechanism associated with the upper radial bearing assembly of the bearing section, which can selectively vary an angular relationship between the longitudinal axes of the housing and the offset shaft.2. The biasing mechanism of claim 1 , wherein the housing is non-sealed to permit a drilling fluid to lubricate the lower bearing assembly and the upper radial bearing assembly.3. The biasing mechanism of claim 1 , wherein the lower end of the offset shaft is disposed a distance from the mid-point of the pivot which is less than 36 inches.4. The biasing mechanism of claim 1 , wherein the pivot of the lower bearing assembly is a ...

LATERAL WELLBORE COMPLETION APPARATUS AND METHOD

A lateral wellbore completion apparatus may include a flow-through deflector having a deflector face and a junction string that includes a junction block cooperative to mate with the deflector face, a downhole device, and an inductive coupler electrically connected to the downhole device. A method may include anchoring the deflector in a main bore, making-up at the drilling surface a junction string that includes a junction block, a completion string section having a downhole device, and a secondary inductive coupler electrically connected to the downhole device, running the junction string into the main bore, deflecting the completion string section into the lateral bore, and landing the junction block on the deflector face thereby communicatively coupling the secondary and primary inductive couplers. 1. A lateral wellbore completion apparatus , comprising:a flow-through deflector having a deflector face; anda junction string comprising an inductive coupler electrically connected to a downhole device and a junction block positioned between the inductive coupler and the downhole device, the junction block comprising a bore and a low-side having a window to the bore, wherein the low-side is cooperative to mate with the deflector face.2. The apparatus of claim 1 , wherein the inductive coupler is electrically connected to the downhole device by a conductor.3. The apparatus of claim 1 , wherein:the junction block comprises a groove formed on a high-side; andthe inductive coupler is electrically connected to the downhole device by a conductor, the conductor positioned in the groove.4. The apparatus of claim 1 , further comprising a swivel located between the junction block and the downhole device.5. The apparatus of claim 1 , wherein the junction string comprises an intervention profile located on an opposite side of the junction block from the downhole tool.6. The apparatus of claim 1 , wherein the downhole device is located in a lateral completion string section of ...

Method and System for Laterally Drilling Through a Subterranean Formation

A method for lateral drilling into a subterranean formation whereby a shoe is positioned in a well casing, the shoe defining a passageway extending from an upper opening in the shoe through the shoe to a side opening in the shoe. A rod and casing mill assembly are inserted into the well casing and through the passageway in the shoe until a casing mill end of the casing mill assembly substantially abuts the well casing. The rod and casing mill assembly are rotated until the casing mill end substantially forms a perforation in the well casing. An internally rotating nozzle is attached to an end of a hose and is pushed through the passageway and the perforation into the subterranean formation, and fluid is ejected from tangential jets into the subterranean formation for impinging upon and eroding the subterranean formation.

MAGNETOSTRICTIVE MOTOR FOR A BOREHOLE ASSEMBLY

A motor includes: a rotor including an undulated surface; a rod disposed about the rotor; and a coil disposed about the rod to induce shape changes in the rod, which in turn impart forces to the undulated surface to rotate the rotor. 1. A motor , comprising:a rotor comprising an undulated surface;a rod disposed about the rotor; anda coil disposed about the rod to induce shape changes in the rod, which in turn impart forces to the undulated surface to rotate the rotor.2. The motor of claim 1 , wherein the undulated surface comprises a symmetrical pattern.3. The motor of claim 1 , wherein the undulated surface comprises a skewed pattern.4. The motor of claim 1 , wherein the forces rotate the rotor in a predetermined direction.5. The motor of claim 1 , wherein the shape changes impart forces to the undulated surface to rotate the rotor in a first direction with a plurality of phases.6. The motor of claim 1 , wherein the shape changes impart forces to the undulated surface to selectively rotate the rotor in one of a first direction and a second direction.7. The motor of claim 1 , wherein the rotor claim 1 , the rod claim 1 , and the coil and the rod assembly are usable in a wellbore.8. A bottom hole assembly claim 1 , comprising:a housing and a shaft disposed therein;a rotor coupled to the shaft and comprising an undulated surface;a magnetostrictive rod disposed in a rod housing about the undulated surface, the magnetostrictive rod having an end disposed adjacent to the undulated surface; anda winding arrangement disposed at least partially about the magnetostrictive rod to induce a series of shape changes in the magnetostrictive rod, wherein the series of shape changes imparts forces to the undulated surface.9. The bottom hole assembly of claim 8 , wherein the shaft is drivingly coupled to a drill bit claim 8 , and the rotor rotates the drill bit.10. The bottom hole assembly of claim 8 , further comprising:an adjustable portion of the housing, wherein the rotor is ...

Method for Hydrocarbon Well Completion

A method of completing a hydrocarbon lateral well in a target shale formation. The method uses a data log generated from an optical flow cell assembly to identify areas in the lateral well of high free gas porosity. By evaluating such data, an operator can group “like” rock, determine stage length and variation in stage length, and determine perforation cluster spacing and location. The flow cell assembly can also be used in a completion program to assist in the steering of a lateral well being drilled below the target formation. 19.-. (canceled)10. A method comprising:generating a data log from an optical flow cell assembly within a gas flow line of a rig drilling a lateral well, the gas flow line being in fluid communication with a return flow line of the lateral well, the data log showing areas of the lateral well exhibiting high free gas porosity.11. The method of claim 10 , wherein the optical flow cell assembly comprises:an optical probe disposed within an internal bore of the optical flow cell, the optical probe detecting raw point flow velocity data of gas in the gas flow line.12. The method of further comprising:filtering the raw point flow velocity data to reject errant velocity data to obtain filtered raw point flow velocity data;correcting the filtered raw point flow velocity data to obtain a bulk velocity data; andcalculating a corrected flow rate for the gas in the gas flow line based on the bulk velocity data and an internal diameter of the gas flow line.13. The method of further comprising:utilizing the corrected flow rate to determine an amount of gas in the return flow line.14. The method of claim 12 , wherein the optical flow cell assembly further comprises:a sensor array to receive temperature and pressure measurements, the corrected flow rate based on at least one of the temperature and pressure measurements.15. The method of claim 12 , wherein the optical flow cell assembly is communicatively coupled to a computer for filtering the raw point ...

SYSTEM AND METHOD FOR KICKING-OFF A ROTARY STEERABLE

A method and system for steering a rotary steerable tool in a borehole. A method includes determining an azimuthal angle between a reference direction and a reference point on a direction determination component of a tool string. The direction control component is remote from the rotary steerable tool. The azimuthal angle and a time at which the angle was determined are communicated to a rotary steerable tool direction control system. A steerable shaft of the rotary steerable tool is deflected based on the azimuthal angle and the time at which the angle was determined, thereby directing the rotary steerable tool in a predetermined direction. 1. A method for steering a rotary steerable tool in a borehole , comprising:determining an azimuthal angle between a reference direction and a reference point on a direction determination component of a tool string;communicating the azimuthal angle and a time at which the angle was determined to a rotary steerable tool direction control system; anddeflecting a steerable shaft of the rotary steerable tool based on the azimuthal angle and the time at which the angle was determined, thereby directing a the rotary steerable tool in a predetermined direction;wherein the direction determination component is remote from the rotary steerable tool.2. The method of claim 1 , further comprising synchronizing a clock of the direction determination component and a clock of the direction control system.3. The method of claim 1 , further comprising storing periodically determined time-stamped rotary position information for the steerable shaft.4. The method of claim 1 , further comprising:identifying stored rotary position information corresponding to the time at which the azimuthal angle was determined; anddetermining the position of a rotation resistant housing surrounding the steerable shaft relative to the reference direction at the time at which the azimuthal angle was determined based on the information.5. The method of claim 1 , further ...

DOWNHOLE DRILLING FORCE ASSEMBLY AND METHOD OF USING SAME

A drilling assembly, drilling system and method is provided. The drilling system includes a drilling rig with a drill string deployable therefrom and drivable thereby. The drill string has a bottom hole assembly with a drill bit at a lower end thereof advanceable into a subterranean formation to form a wellbore. The drilling assembly includes at least one mandrel operatively connectable to the drill string, at least one sleeve positionable about the mandrel (the sleeve having an offset stabilizer on an outer surface thereof selectively positionable in contact with a wall of the wellbore), and an orienter with a receptacle on an interior of the sleeve and a socket on an exterior of the mandrel. The socket is interlockingly engageable with the receptacle whereby the sleeve is orientable about the drill string. The one mandrel and the sleeve have a mass offset from the drill string whereby rotation of the drill string is affected during drilling. 1. A drilling assembly of a drilling system comprising a drilling rig with a drill string deployable therefrom and drivable thereby , the drill string having a bottom hole assembly with a drill bit at a lower end thereof advanceable into a subterranean formation to form a wellbore , the drilling assembly comprising:at least one mandrel operatively connectable to the drill string;at least one sleeve positionable about the at least one mandrel, the at least one sleeve having an offset stabilizer on an outer surface thereof selectively positionable in contact with a wall of the wellbore; andan orienter comprising a receptacle on an interior of the at least one sleeve and a socket on an exterior of the at least one mandrel, the socket interlockingly engageable with the receptacle whereby the at least one sleeve is orientable about the drill string;wherein the at least one mandrel and the at least one sleeve have a mass offset from the drill string whereby rotation of the drill string is affected during drilling.2. The drilling ...

MULTIDIRECTIONAL WELLBORE PENETRATION SYSTEM AND METHODS OF USE

A drilling assembly includes a hydraulic jet disposed on a downhole end of a fluid line, and one or more adjustable jet nozzles on the hydraulic jet in multiple angular orientations relative to a central axis of the hydraulic jet. The one or more adjustable jet nozzles provide fluid pressure to penetrate a formation and cut multiple angular channels. 1. A drilling assembly comprising:a hydraulic jet disposed on a downhole end of a fluid line; andone or more adjustable jet nozzles on the hydraulic jet in multiple angular orientations relative to a central axis of the hydraulic jet,wherein the one or more adjustable jet nozzles provide fluid pressure to penetrate a formation and cut multiple angular channels.2. The bottomhole assembly of claim 1 , further comprising one or more hydraulic centralizers disposed along a length of the flexible line to centralize the hydraulic jet.3. The bottomhole assembly of claim 2 , wherein the one or more hydraulic centralizers includes a plurality of circumferential radial jet nozzles to provide a circumferential jet stream radially outward.4. The bottomhole assembly of claim 3 , wherein the radial jet nozzles are evenly spaced about a circumference of the hydraulic centralizers.5. The bottomhole assembly of claim 3 , wherein the radial jet nozzles are unevenly spaced about a circumference of the hydraulic centralizers.6. The bottomhole assembly of claim 1 , wherein the one or more jet nozzles are configured having various diameters.7. The bottomhole assembly of claim 1 , wherein a jet size of the one or more jet nozzles is adjustable downhole.8. A cutting device comprising:a cutter disposed on an end thereof;a spacer section proximate to the cutter; anda guide channel having a radius of curvature,wherein a length of the spacer and bearing section corresponds with the guide channel radius of curvature to create a particular cutter path angle through a casing wall.9. The bottomhole assembly of claim 8 , wherein the guide channel has a ...

Wellbore Casing Section with Moveable Portion for Providing a Casing Exit

Systems and methods for providing a casing exit include a casing section having a generally cylindrical outer sleeve including a proximal end and a distal end. The outer sleeve may define an outer window extending between the proximal end and the distal end. A generally cylindrical inner sleeve may be received within the outer sleeve and may define an inner window. The inner sleeve may be moveable between a first position in which the inner window is misaligned with the outer window and the inner sleeve substantially closes the outer window, and a second position in which the inner window is aligned with the outer window. A deflector tool may be configured to engage the inner sleeve and move the inner sleeve from the first position to the second position 1. A casing section for positioning in a wellbore at a location where it is desired to form a diverging lateral borehole , the casing section comprising:a generally cylindrical outer sleeve including a proximal end and a distal end, the outer sleeve defining an outer window extending between the proximal end and the distal end; anda generally cylindrical inner sleeve received within the outer sleeve and defining an inner window, the inner sleeve being moveable between a first position in which the inner window is misaligned with the outer window and the inner sleeve substantially closes the outer window, and a second position in which the inner window is aligned with the outer window, wherein the inner sleeve includes an alignment portion a cam surface extending in a proximal and radial direction, the alignment portion being engageable to move the inner sleeve with respect to the outer sleeve.2. The casing section of claim 1 , wherein the inner sleeve is rotatable with respect to the outer sleeve from the first position to the second position.3. (canceled)4. The casing section of claim 1 , wherein the alignment portion includes a slot.5. (canceled)6. The casing section of claim 1 , wherein the outer sleeve includes ...

Advanced inground operations, system, communications and associated apparatus

Systems, apparatus and methods are described for purposes of initiating a response to detection of an adverse operational condition involving a system including a drill rig and an inground tool. The response can be based on an uphole sensed parameter in combination with a downhole sensed parameter. The adverse operational condition can involve cross-bore detection, frac-out detection, excessive downhole pressure, a plugged jet indication and drill string key-holing detection. A communication system includes an inground communication link that allows bidirectional communication between a walkover detector and the drill rig via the inground tool. Monitoring of inground tool depth and/or lateral movement can be performed using techniques that approach integrated values. Bit force based auto-carving is described in the context of an automated procedure. Loss of locator to drill rig telemetry can trigger an automated switch to a different communication path within the system.

High Load Universal Joint for Downhole Rotary Steerable Drilling Tool

A technique facilitates downhole drilling applications by providing a universal joint. The universal joint has a high load carrying capability presented in a compact and simple configuration. The high load carrying capability is achieved by techniques employing unique load transfer mechanisms. For example, higher load capability may be provided by a load sharing principal in which torque loads are jointly transmitted through universal joint pins and the side faces of a universal joint cross. The higher load capability also may be achieved by transferring loads through a monolithic cross having integral pins and a split yoke/clevis assembly. In another embodiment, higher load capability results from using universal joint pins inserted from the inside of the universal joint and screwed outwardly until full engagement with the joint yokes is achieved. Each of the universal joint embodiments also may be designed to enable pressure-sealed flow of drilling mud through the joint. 1. A system for drilling a borehole , comprising: a main body portion having a main body yoke with internal surfaces;', 'a bit shaft portion having a bit shaft yoke with internal surfaces; and', 'a centerpiece coupling the main body portion to the bit shaft portion, the centerpiece having side faces which correspond with the internal surfaces of the main body portion and the bit shaft portion, the side faces being shaped to jointly transfer torque loads over a plurality of the side surfaces., 'a universal joint coupled into a drill string, the universal joint comprising2. The system as recited in claim 1 , wherein the side faces comprise four generally flat side faces.3. The system as recited in claim 1 , wherein the universal joint comprises an internal passage to conduct flowing drilling mud.4. The system as recited in claim 1 , wherein the universal joint comprises four hardened pins which secure the yokes to the centerpiece.5. The system as recited in claim 1 , wherein a wear plate is ...

DIRECTIONAL DRILLING USING MAGNETIC BIASING

Apparatus and methods are disclosed for directionally drilling an earth formation where magnet arrays are utilized to provide net lateral force between a first member coupled to a drill bit and another member that either extends through or around the first member. 1. A directional drilling apparatus , comprising:a tubular member having an inner surface;an elongated member having an outer surface and extending inside said tubular member;a controller that controls at least one of a rotational and an axial alignment of said tubular member and said elongated member;a drilling bit coupled to one of said tubular member and said elongated member;a first array of magnets coupled to said tubular member;a second array of magnets coupled to said elongated member, wherein said first array of magnets and said second array of magnets are arranged in a first configuration controlled by said controller to provide a net lateral force to said one of said tubular member and said elongated member coupled to said drilling bit, thereby directionally controlling said drilling bit.2. A directional drilling apparatus according to claim 1 , wherein:said tubular member is a drill collar.3. A directional drilling apparatus according to claim 2 , wherein:said elongated member is an essentially geostationary mandrel.4. A directional drilling apparatus according to claim 3 , wherein:said drilling bit is coupled to said drill collar.5. A directional drilling apparatus according to claim 4 , further comprising:first and second sets of bearings, axially spaced and located between said outer surface of said mandrel and said inner surface of said drill collar, said second set of bearings located distal said first set of bearings, wherein said first array of magnets and said second array of magnets are located axially between said second set of bearings and said drilling bit.6. A directional drilling apparatus according to claim 4 , further comprising:first and second sets of bearings, axially spaced ...

Drill With Remotely Controlled Operating Modes and System and Method for Providing the Same

The present invention relates to a drilling system with a multi-function drill head used in, among other applications, oil and gas drilling. The system is used to enhance the effective permeability of an oil and/or gas reservoir by drilling or cutting new structures into the reservoir. The system is capable of cutting straight bores, radius bores, or side panels, by water jets alone or in combination with lasers. In various embodiments, a device for remotely controlling the mode of the system by variations in the pressure of a drilling fluid is also provided, allowing an operator to switch between various modes (straight drilling, radius bore drilling, panel cutting, etc.) without withdrawing the drill string from underground. 1. A valve assembly for controlling operating modes of a drill , comprising: a bore;', 'a first end;', 'a first hole;', 'a second hole;', 'a first body groove interconnected to the first hole, wherein the first body groove corresponds to a first operating mode; and', 'a second body groove interconnected to the second hole, wherein the second body groove corresponds to a second operating mode;, 'a housing, comprisinga spool having an axial bore, a first notch, a second notch, a first end, and a second end, wherein the spool is movable between a first position and a second position, wherein the first end of the spool receives an operating fluid, and wherein the first position corresponds to a first pressure of the operating fluid and the second position corresponds to a second pressure of the operating fluid;a spring biased against the second end of the spool and the first end of the housing; anda detent assembly for locking the spool in the first position and in the second position, wherein the detent comprises a spring biased against a locking pin, wherein the locking pin is biased against the first notch of the spool when the spool is in the first position and the locking pin is biased against the second notch of the spool when the spool is ...

Steering head

A steering head for use with a casing, the steering head having a generally cylindrical body with a first body end with a lead edge, a second body end with a rear edge, and a body surface extending from the lead edge to the rear edge, an outer tube with an internal side generally facing the body surface, the outer tube extending from the first body end to the second body end, and a steering flap disposed on an external side of the outer tube having a first flap face facing radially inwardly and a second flap face facing radially outwardly. A biased hinge is secured to both the outer tube and the steering flap, the biased hinge being operative to retract the steering flap into a retracted position from an extending position.

Downhole Robotic Micro-Drilling System

The invention relates to the completion and enhancement of oil and gas wells. The invention provides for a downhole tool which: enters vertical or horizontal wells located adjacent to the oil and gas bearing formation, parts the casing and extends outward forming micro-boreholes necessary to remove residual oil and gas which remain in place. After the initial fluid production has been harvested, the invention can be employed on new or old wells and can operate in all conditions which wells encounter during the standard drilling process. The process of micro-holes can replace the process known as “fracking”. Fracking is being employed; however the process is being reviewed due to safety of human life. The invention employs special alloys and procedures to form the extended reach micro-boreholes.

Apparatus and method for drilling a well

A method for forming a controllable bend angle in a drill string in a wellbore comprises attaching an upper housing to a drill string. At least, one drive motor is anchored in the upper housing. A middle housing is operably coupled to the at least one drive motor. A lower housing is operably coupled to the at least one drive motor. The at least one drive motor is controllably operated to rotate the middle housing by a first rotation angle with respect to the upper housing, and to rotate the lower housing by a second rotation angle with respect to the upper housing, to generate a desired bend angle between the middle housing and the lower housing at a target toolface orientation between the bend angle and the upper housing.

Bi-Stable Valve

A bi-stable valve includes a first chamber having a first aperture and a second aperture, and a second chamber having a first aperture and a second aperture. The bi-stable valve also includes a shaft having a first valve member adjacent a first end of the shaft and a second valve member adjacent an opposite second end of the shaft. The shaft is movable between a first position, in which the first valve member closes off the second aperture of the first chamber and the second valve member closes off the second aperture of the second chamber to prevent fluid from passing through the second apertures of the first and second chambers, and a second position, in which the first valve member and the second valve member allow fluid to pass through the second aperture of the first chamber and the second aperture of the second chamber. 1. A down hole tool control system , comprising: a first chamber having a first aperture and a second aperture;', 'a second chamber having a first aperture and a second aperture;', 'a shaft having a first valve member adjacent a first end of the shaft and a second valve member adjacent an opposite second end of the shaft, the shaft movable between a first position, in which the first valve member closes off the second aperture of the first chamber and the second valve member closes off the second aperture of the second chamber to prevent fluid from passing through the second apertures of the first and second chambers, and a second position, in which the first valve member and the second valve member allow fluid to pass through the second aperture of the first chamber and the second aperture of the second chamber;', 'a third chamber having a first aperture and a second aperture, the first aperture in fluid communication with the second aperture of the first chamber; and', 'a fourth chamber having a first aperture, a second aperture and a third aperture, the first aperture of the fourth chamber in fluid communication with the second aperture of ...

Diverter latch assembly system

A system and methodology facilitates use of a diverter latch assembly in cooperation with a lateral wellbore. The diverter latch assembly comprises an upper latch assembly coupled with a lower latch assembly via a swivel. The upper latch assembly also comprises a releasable latch positioned to engage a tieback receptacle located in the well. The swivel and the releasable latch are designed to enable rotation of the releasable latch relative to a tubing of the lower latch assembly during release of the diverter latch assembly from the tieback receptacle. The rotational release system helps provide controlled release and withdrawal of the diverter latch assembly while reducing risk of damage to the diverter latch assembly or other downhole components.

Steerable Earth Boring Assembly

A steerable earth boring assembly which includes an annular collar and a drive shaft with a drill bit, where the shaft pivots with respect to the collar. An upper portion of the shaft inserts into an orientation sleeve which resides in the collar. An axial bore is obliquely formed through the sleeve, and in which the upper portion inserts. Rotating the sleeve causes precession of the upper portion, thereby pivoting the drill bit obliquely to the collar. Selective rotation of the sleeve orients the drill bit into a designated orientation for forming a deviated wellbore. Included in the assembly is a flow tube with an end in sealing contact with the drive shaft. 1. A method of forming a deviated wellbore comprising:providing a steerable earth boring assembly that comprises, an annular collar, a drive shaft rotationally coupled to the annular collar, a drill bit mounted to a downstream end of the drive shaft, an orientation sleeve having a bore that extends oblique to an axis of the sleeve, and in which receives an end of the drive shaft distal from the drill bit;rotating the drive shaft and drill bit by rotating the collar;rotating the orientation sleeve at the same time the collar is being rotated to position the drive shaft in a designated orientation that is oblique to an axis of the earth boring assembly; andexcavating a subterranean formation with the drill bit to form the deviated wellbore.2. The method of claim 1 , wherein the steerable earth boring assembly is coupled to an end of a drill string claim 1 , and wherein rotating the drill siring rotates the annular collar.3. The method of claim 1 , wherein the collar is rotated at substantially the same rate of rotation as the orientation sleeve.4. The method of claim 3 , wherein the collar is rotated in a direction opposite from a direction of rotation of the orientation sleeve.5. The method of further comprising claim 1 , adjusting a rate of rotation of the orientation sleeve to cause a change of direction of ...

Drive Shaft for Steerable Earth Boring Assembly

A steerable earth boring assembly which includes an annular collar and a drive shaft with a drill bit, where the shaft pivots with respect to the collar. An upstream portion of the shaft inserts into an orientation sleeve which resides in the collar. An axial bore is obliquely formed through the sleeve, and in which the upstream portion inserts. Rotating the sleeve causes precession of the upstream portion, thereby pivoting the drill bit obliquely to the collar. Selective rotation of the sleeve orients the drill bit into a designated orientation for forming a deviated wellbore. Included in the assembly is a flow tube with an end in sealing contact with the drive shaft. 1. A steerable earth boring assembly comprising:an annular collar;a drive shaft circumscribed by the collar and that swivels with respect to the collar;a bore through the drive shaft having a downstream end that selectively receives a drill bit;a flow tube having an upstream end in communication with drilling fluid and a downstream end in communication with the bore; anda shroud on a portion of the drive shaft distal from the bit and that circumscribes the flow tube, and which is defined where an inside diameter of the bore exceeds an outer diameter of flow tube to accommodate swiveling of the drive shaft.2. The steerable earth boring assembly of claim 1 , wherein the inside diameter of the bore tapers radially outward with distance away from the drill bit.3. The steerable earth boring assembly of claim 1 , further comprising a static seal formed between the downstream end of the flow tube and the bore.4. The steerable earth boring assembly of claim 3 , wherein the drive shaft pivots about a plane in which the static seal is disposed.5. The steerable earth boring assembly of claim 1 , wherein the collar and drive shaft are rotationally coupled by spline gears.6. The steerable earth boring assembly of claim 5 , wherein the spline gears comprise male splines coupled to the drive shaft claim 5 , female ...

Steerable Earth Boring Assembly Having Flow Tube with Static Seal

A steerable earth boring assembly which includes an annular collar and a drive shaft with a drill bit, where the shaft pivots with respect to the collar. An upstream portion of the shaft inserts into an orientation sleeve which resides in the collar. An axial bore is obliquely formed through the sleeve, and in which the upstream portion inserts. Rotating the sleeve causes precession of the upstream portion, thereby pivoting the drill bit obliquely to the collar. Selective rotation of the sleeve orients the drill bit into a designated orientation for forming a deviated wellbore. Included in the assembly is a flow tube with an end in sealing contact with the drive shall. 1. A steerable earth boring assembly comprising:an annular collar that has an end in selective engagement with a drill string;an annular flow tube disposed in the collar that is in fluid communication with an annulus in the drill string;a drive shaft coupled with the collar and that is pivotable with respect to the flow tube;a bore axially formed through the drive shaft that selectively receives an earth boring bit and that is in fluid communication with the flow tube; anda sealing element that defines a static seal between the flow tube and drive shaft.2. The steerable earth boring assembly of claim 1 , wherein the bore has a diameter that increases with distance away from the profile to define a shroud portion claim 1 , and wherein the flow tube inserts into the shroud portion claim 1 , so that when the drive shaft pivots an inner diameter of the bore within the shroud portion is spaced away from an outer surface of the flow tube.3. The steerable earth boring assembly of claim 1 , wherein the sealing element continues to block a flow of fluid when the drive shaft pivots with respect to the collar.4. The steerable earth boring assembly of claim 1 , wherein the sealing element comprises an elastomeric O-ring that circumscribes the flow tube.5. The steerable earth boring assembly of claim 1 , further ...

ADJUSTABLE BENT HOUSINGS WITH DISINTEGRABLE SACRIFICIAL SUPPORT MEMBERS

Adjustable drill string housings are described for use in the directional drilling of wellbores, e.g. wellbores for hydrocarbon recovery wells. The adjustable drill string housings permit adjustment of a bend angle in the housings without removing the housings from a wellbore. In some exemplary embodiments, the bend angle can be adjusted by changing the internal stresses in a support member carried by the housings. In other embodiments, the bend angle may be adjusted by causing failure of sacrificial support members carried by the housings, and the failure may be caused by delivering chemicals through a chemical delivery system to the sacrificial support members. Methods of operating the adjustable drill string housings include multi-lateral drilling operations wherein the bend angle is adjusted when a casing window has been detected. 1. An adjustable drill string housing , comprising: a first operational configuration wherein the annular member maintains an internal preload therein such that the upper and lower longitudinal axes are disposed at a first bend angle with respect to one another; and', 'a second operational configuration wherein at least a portion of the internal preload is relieved such that the upper and lower longitudinal axes are disposed at a second bend angle with respect to one another; and, 'an annular member having an upper end and a lower end, the annular member defining an upper longitudinal axis extending through the upper end and a lower longitudinal axis extending through the lower end, the annular member deformable about a bend axis betweenat least one sacrificial support member carried by the annular member, the at least one sacrificial support member coupled to the annular member to maintain at least a portion of the internal preload in the annular member, and wherein the at least one sacrificial support member is constructed of at least one disintegrable material, the at least one disintegrable material selectively disintegrable to ...

Slip Ring With A Tensioned Contact Element

One example embodiment is an apparatus including a ring assembly and a contact assembly. The ring assembly includes a conductive ring having a conductive ring engagement surface. The contact assembly includes a contact block and a contact element having a contact element engagement surface. The contact element is connected with the contact block. The contact element forms a loop around the conductive ring between the ends of the contact element. The contact element engagement surface is engaged with the conductive ring engagement surface along an electrical contact section of the loop. Another example embodiment is a method for assembling a slip ring.

Steering System for Drill String

A technique facilitates directional drilling of boreholes. A steerable system has a plurality of actuator pistons slidably mounted in a mechanical structure. The mechanical structure comprises a radially inward portion containing ports to deliver a portion of drilling mud to the plurality of actuator pistons. The mechanical structure also has a radially outward portion positioned to define a main flow passage extending longitudinally through the steerable system between the radially inward portion and the radially outward portion of the mechanical structure. 1. A system for forming a directional borehole , comprising: a radially inward portion containing ports to deliver actuating mud to the plurality of actuator pistons;', 'a radially outward portion; and', 'a piston chamber portion extending radially between the radially inward portion and the radially outward portion, mechanical structure defining a main flow passage extending longitudinally through the rotary steerable system between the radially inward portion and the radially outward portion for directing a flow of actuating mud to a drill bit., 'a rotary steerable system having a plurality of actuator pistons slidably mounted in a mechanical structure, the mechanical structure comprising2. The system as recited in claim 1 , further comprising a valve system positioned radially inward of the main flow passage.3. The system as recited in claim 1 , wherein the actuator pistons act against corresponding steering pads.4. The system as recited in claim 1 , wherein the actuator pistons have circular cross-sections.5. The system as recited in claim 1 , wherein the actuator pistons have non-circular cross-sections.6. The system as recited in claim 1 , wherein the rotary steerable system is connected into a drill string.7. The system as recited in claim 1 , wherein the plurality of actuator pistons comprises three actuator pistons.8. The system as recited in claim 1 , wherein at least a portion of each actuator piston ...

Valve System for Distributing Actuating Fluid

A technique facilitates delivery of high pressure actuating fluid, e.g. drilling mud, to a plurality of actuators. The technique employs a valve system in which high pressure actuating fluid is delivered from inside a rotor to outer stator ports on a surrounding stator. The construction and arrangement of the rotor and stator reduces the inherent instability and susceptibility to sticking that can otherwise affect the operation of the valve. 1. A system for distributing actuating fluid in a rotary steerable system , comprising:a stator having a plurality of collecting chambers fluidly coupled with a plurality of flow ports;a rotor rotatably received in the stator, the rotor receiving actuating fluid under pressure and having rotor ports which may be aligned with specific flow ports to deliver actuating fluid to select steering actuators; anda plurality of pads on which the rotor is rotatably mounted to provide a larger clearance between the rotor and the stator.2. The system as recited in claim 1 , wherein the plurality of pads comprises a plurality of ribs.3. The system as recited in claim 1 , wherein the plurality of pads comprises a plurality of inserts.4. The system as recited in claim 3 , wherein at least some inserts of the plurality of inserts are positioned around the flow ports and have flow passages through which the actuating fluid flows.5. The system as recited in claim 1 , wherein the rotor is mounted on a shaft which is rotatably received in a bearing mounted in the stator.6. A system for distributing actuating fluid claim 1 , comprising:a stator having a cylindrical interior with stator flow ports;a rotor in the form of a cylinder rotatably received in the stator, the rotor having rotor flow ports which may be selectively aligned with the stator flow ports by rotating the rotor relative to the stator, the stator flow ports and the rotor flow ports being non-circular.7. The system as recited in claim 6 , wherein the stator flow ports have a different ...

UNIVERSAL JOINT

A universal joint assembled to a drill string transfers torque and axial force between two components where the shafts of the components are not completely aligned. The universal joint includes end members connected to opposite ends of a cable for connecting to components of the drill string. As the joint rotates the cable flexes to accommodate misalignment between the connected drill string components. 1. A universal joint for downhole applications including:a cable with spaced ends;a first component fixed to and terminating a first end of the cable, and including a connector for connecting into a drill string; anda second component fixed to and terminating a second end of the cable, and including a connector for connecting into a drill string;wherein the cable transmits torque and axial force from the first component to the second component.2. The universal joint of wherein the cable is a stranded cable.3. The universal joint of wherein the cable includes a disk that spaces groups of strands from each other.4. The universal joint of wherein the cable includes a band around groups of strands.5. The universal joint of where the cable includes two kinds of strand material with contrasting material properties.6. The universal joint of where the cable includes a solid portion at least half the diameter of the cable.7. The universal joint of where the cable includes a service life indicator providing a gauge of wear claim 1 , erosion claim 1 , overstress and/or fatigue.8. The tool of where the cable includes a hollow tube.9. A downhole tool including:a positive displacement motor;a drill bit;a cable between the positive displacement motor and the drill bit to transfer torque and axial forces from the positive displacement motor to the drill bit; andfirst and second cable termination members, each with a socket to receive the cable at one end and a connector at the opposite end, wherein one of the cable termination members is connected to the positive displacement motor ...

Bi-directional drilling systems and methods

A method for removing material with a bit includes rotating a bit in a first direction, changing the rotational direction and rotating the bit in an opposing second direction. Rotation of the bit in the first direction and rotation of the bit in the second direction both remove material.

Collar With Stepped Retaining Ring Groove

An assembly for a torque-transmitting connection in an inner pipe string of a dual-member drill string is formed from a collar, a retaining ring, and an inner pipe member. An endless internal groove having adjacent shallow and deep sections is formed in the collar. Formed in the inner pipe member, an endless external groove is situated in concentric relationship with the internal groove. The retaining ring, situated within the grooves, resists disconnection of the collar from the inner pipe member. When the assembly is subjected to an axial force that might otherwise tend to pull it apart, the retaining ring resists the tendency by wedging between the bottom of the shallow section of the internal groove and the crest of the external groove. 1. An assembly , comprising:a tubular collar having opposed first and second ends and an endless internal groove positioned adjacent the first end in which the groove has a step-like base defining adjacent shallow and deep sections;a pipe member having an end positioned within the collar and an endless external groove positioned adjacent the end of the pipe member and situated in concentric relationship with the internal groove; anda retaining ring situated within the grooves of both the collar and the pipe section.2. The assembly of in which the external groove is bounded on one side by a ramp.3. The assembly of in which the included angle between the ramp and the bottom of the external groove is between 120 and 165 degrees.4. The assembly of in which the included angle between the ramp and the bottom of the external groove is 135 degrees.5. The assembly of claim 1 , the collar having an internal shoulder positioned between the end of the collar and the internal groove and the pipe member having an external shoulder in which contact between the shoulders limits the axial movement of the collar and the pipe member relative to each other.6. The assembly of in which the shallow section of the groove is situated closer to the first ...

LOAD-BEARING UNIVERSAL JOINT WITH SELF-ENERGIZING SEALS FOR A ROTARY STEERABLE DRILLING TOOL

A rotary steerable drilling tool and a method according to which a universal joint is sealed. In one embodiment, the method includes providing the collar, the shaft, the universal joint, and first and second shoulders between which the universal joint is positioned; providing first and second self-energizing seals between the collar and the shaft on opposite sides of the universal joint; rotating the collar and the shaft; seating the first self-energizing seal against the first shoulder; and seating a second self-energizing seal against the second shoulder. In one embodiment, the universal joint includes a convex surface formed on the shaft; a first concave surface extending circumferentially about the shaft and adapted to mate with the convex surface to carry a first axial load; and a spacer ring defining a second concave surface adapted to mate with the convex surface to carry a second axial load. 1. A rotary steerable drilling tool adapted to be disposed within a wellbore , the rotary steerable drilling tool comprising:a collar defining an interior surface and a first longitudinal axis;a shaft extending within the collar, the shaft defining an exterior surface and a second longitudinal axis;a universal joint adapted to transfer rotation from the collar to the shaft when the collar is rotated;a convex surface connected to the shaft and extending circumferentially thereabout;a first concave surface extending circumferentially about the shaft, the first concave surface adapted to mate with the convex surface to carry a first axial load applied to the shaft in a first direction;wherein the first axial load is applied to the shaft when the first and second longitudinal axes are spaced in either an oblique relation or a parallel relation.2. The rotary steerable drilling tool of claim 1 , wherein the rotary steerable drilling tool further comprises a spacer ring disposed within the collar claim 1 , the spacer ring comprising:a second concave surface extending ...

Design and Method to Improve Downhole Motor Durability

Rotor and/or stator designs and methods thereof to improve progressive cavity motor or pump durability. In one or more implementations, the rotor may have a variable outer diameter or variable stiffness along an axial length thereof. The stator may similarly have a variable inner diameter or variable stiffness, which may compliment or diverge from the variable outer diameter or variable stiffness of the rotor. 1. A progressive cavity motor or pump , comprising:a stator with an internal axial bore therethrough, the internal axial bore having an inwardly facing surface with axial lobes arranged and designed to form a stator helical profile; anda rotor with an outer surface having axial lobes arranged and designed to form a rotor helical profile that is at least partially complimentary to the stator helical profile; the rotor being rotationally disposed within the internal axial bore of the stator; the axial lobes of the rotor numbering at least one less than the axial lobes of the stator to form a moving chamber between the rotor and stator; the rotor having a diameter that varies along an axial length thereof, the diameter of the rotor proximate an uphole end portion thereof being no greater than at a downhole end portion thereof.2. The progressive cavity motor or pump of wherein claim 1 ,the diameter of the rotor proximate the downhole end portion thereof is greater than at an uphole diameter.3. The progressive cavity motor or pump of wherein claim 1 ,the diameter of the rotor intermediate the uphole end portion and the downhole end portion is a minimum diameter.4. The progressive cavity motor or pump of claim 3 , wherein claim 3 ,rotor stiffness proximate the minimum diameter is less than elsewhere along the axial length of the rotor.5. The progressive cavity motor or pump of claim 1 , wherein claim 1 ,the rotor is constructed of the same materials at the uphole end portion as at the downhole end portion.6. The progressive cavity motor or pump of wherein claim 1 , ...

DRILLING SYSTEMS AND METHODS

A directional drilling system that includes a drill bit that drills a bore through rock. The drill bit includes an outer portion of a first material and an inner portion coupled to the outer portion. The inner portion includes a second material. 1. A directional drilling system , comprising: an outer portion comprising a first material; and', 'an inner portion coupled to the outer portion, wherein the inner portion comprises a second material, and wherein the first material and the second material are different., 'a drill bit configured to drill a bore through rock, wherein the drill bit comprises2. The directional drilling system of claim 1 , wherein the first material comprises carbide.3. The directional drilling system of claim 1 , wherein the second material comprises steel.4. The directional drilling system of claim 1 , wherein the inner portion is a ring and wherein an inner surface of the ring comprises a first plurality of protrusions that extend circumferentially about the inner surface.5. The directional drilling system of claim 4 , comprising:a drive shaft configured to transfer torque from a motor to the drill bit, wherein the drive shaft comprises a second plurality of protrusions that extend circumferentially about the drive shaft, and wherein the first plurality of protrusions are configured to interlock with the second plurality of protrusions.6. The directional drilling system of claim 5 , wherein the outer portion of the drill bit couples to the drive shaft with at least one fastener.7. The directional drilling system of claim 4 , wherein the first plurality of protrusions define a cloverleaf pattern.8. The directional drilling system of claim 5 , comprising:an annular seal configured to rest within an annular groove in an end face of the drive shaft, wherein the annular seal is configured to seal against the outer portion of the drill bit.9. The directional drilling system of claim 1 , wherein the outer portion comprises a plurality of teeth.10. ...

ROTARY STEERING SYSTEMS AND METHODS

A drilling system that includes a drill bit that drills a bore through rock. A shaft coupled to the drill bit, wherein the shaft transfers rotational power to the drill bit. A housing that receives at least part of the shaft. A rotary steering system that controls a drilling direction of the drill bit. The rotary steering system includes a steering sleeve that couples to and uncouples from the housing to control a drilling direction of the drill bit. 1. A drilling system , comprising:a drill bit configured to drill a bore through rock;a shaft coupled to the drill bit, wherein the shaft is configured to transfer rotational power to the drill bit;a housing configured to receive at least part of the shaft; and 'a steering sleeve configured to couple to and uncouple from the housing to control a drilling direction of the drill bit.', 'a rotary steering system configured to control a drilling direction of the drill bit, the rotary steering system comprising2. The drilling system of claim 1 , wherein the rotary steering system comprises:a steering pad coupled to the steering sleeve, wherein the steering pad is configured to rotate with the steering sleeve and to form a steering angle with the drill bit.3. The drilling system of claim 1 , wherein the rotary steering system comprises:a piston coupled to the steering sleeve, wherein the piston is configured to move radially with respect to a longitudinal axis of the steering sleeve to engage a brake pad with and disengage the brake pad from an external rock face.4. The drilling system of claim 3 , wherein the housing comprises a valve configured to control a flow of a fluid to actuate the piston.5. The drilling system of claim 3 , wherein the steering sleeve comprises a valve configured to control a flow of a fluid to actuate the piston.6. The drilling system of claim 1 , comprising:a locking mechanism configured to couple and uncouple the steering sleeve from the housing.7. The drilling system of claim 6 , comprising:a ...

DIRECTIONAL DRILLING SYSTEMS AND METHODS

A directional drilling system that includes a drill bit capable of drilling a bore through rock. A shaft couples to the drill bit. The shaft transfers rotational power from a motor to the drill bit. A steering system controls a drilling direction of the drill bit. The steering system includes a sleeve coupled to the shaft. A steering pad couples to the sleeve. The steering pad forms a steering angle with the drill bit. Axial movement of the steering pad with respect to the drill bit changes the drilling direction by changing the steering angle. 1. A directional drilling system , comprising:a drill bit;a shaft coupled to the drill bit, wherein the shaft is configured to transfer rotational power from a motor to the drill bit; a sleeve coupled to the shaft; and', 'a first steering pad coupled to the sleeve, wherein the first steering pad is configured to form a steering angle with the drill bit, and wherein axial movement of the first steering pad with respect to the drill bit is configured to change the drilling direction by changing the steering angle., 'a steering system configured to control a drilling direction of the drill bit, the steering system comprising2. The system of claim 1 , wherein the first steering pad is configured to move axially and radially to change the steering angle.3. The system of claim 1 , wherein the first steering pad is configured to move axially and radially simultaneously to change the steering angle.4. The system of claim 1 , wherein the system is configured such that the steering angle decreases as the first steering pad moves axially away from the drill bit and the steering angle increases as the first steering pad moves axially toward the drill bit.5. The system of claim 1 , comprising a first actuator configured to axially move the first steering pad.6. The system of claim 5 , wherein the first actuator comprises at least one of a hydraulic actuator and a mechanical actuator.7. The system of claim 1 , wherein the first steering ...

SYSTEM AND METHOD FOR IMPROVING ROTATING SURVEY ACCURACY

The disclosed embodiments include a rotating survey tool. The rotating survey tool includes a first sensor array that in operation collects a first set of survey measurements during a downhole drilling operation. Additionally, the rotating survey tool includes a second sensor array directly coupled to the first sensor array that in operation collects a second set of survey measurements while a drill bit drills during the downhole drilling operation. Further, the second set of survey measurements has a greater base accuracy than the first set of survey measurements. 1. A rotating survey tool , comprising:a first sensor array configured to collect a first set of survey measurements during a downhole drilling operation; anda second sensor array directly coupled to the first sensor array and configured to collect a second set of survey measurements while a drill bit drills during the downhole drilling operation, wherein the second set of survey measurements has a greater base accuracy than the first set of survey measurements.2. The rotating survey tool of claim 1 , comprising a steering system communicatively coupled to the first sensor array and the second sensor array claim 1 , wherein the steering system is configured to receive the first set of survey measurements and the second set of survey measurements and to steer the drill bit based on the first set of survey measurements and the second set of survey measurements.3. The rotating survey tool of claim 2 , wherein the steering system is configured to calibrate the first sensor array based on the second set of survey measurements claim 2 , and to steer the drill bit based on the first set of survey measurements after the first sensor array is calibrated.4. The rotating survey tool of claim 1 , wherein the first sensor array and the second sensor array each comprise an accelerometer claim 1 , a magnetometer claim 1 , a gyroscope claim 1 , or any combination thereof.5. The rotating survey tool of claim 1 , wherein ...

Tool Assembly and Process for Drilling Branched or Multilateral Wells with Whip-Stock

Downhole tool assembly comprises a whipstock engageable with a flow control device. The whipstock comprises a channel. A core is removably mounted in the channel. The flow control device comprises a valve with a shiftable sleeve for selectively directing fluid flow. In a process of drilling and operating a branched well, the whipstock is anchored at a junction in a first well. A second well is drilled from the junction in a direction defined by the work face of the whipstock. After drilling, the core is removed to open the channel in the whipstock. The valve can be set to direct fluid flow to the second well so a fluid pressure can be applied to the second well. The valve can also be set to direct fluid flow through the channel to the first well, so a fluid pressure can be applied to the first well. 1. A downhole tool assembly for drilling and operating a branched well , the assembly comprising: 'a whipstock body having a channel defined therethrough and comprising a first coupling structure, and', 'a whipstock comprising'} a second coupling structure for coupling with the first coupling structure to engage the whipstock body, and', 'a valve comprising a shiftable sleeve for selectively directing fluid flow to the branched well or to the channel in the whipstock body when the first and second coupling structures are coupled to each other., 'a flow control device comprising, 'a core removably mounted in the channel, the core having a work face for orienting a drill to drill the branched well; and'}2. The assembly of claim 1 , wherein the valve is a hydraulically or mechanically-actuated valve and comprises:a tubular body defining a conduit connecting an input port to a first output port and a second output port, wherein the second output port is configured to be in flow communication with the channel in the whipstock body when the first and second coupling structures are coupled to each other, wherein the shiftable sleeve is mounted in the conduit and is actuatable ...

MILLABLE BIT TO WHIPSTOCK CONNECTOR

A departure device couples to a bit using a connector that facilitates release of the bit from the departure device. The connector may be more millable than the departure device and can transmit axial and torque loads between the bit and the departure device. The connector may include a material having lesser strength or hardness than the departure device, and may be millable by the bit. Another example connector may have connection points with the bit, and a movable member of the departure device may a force to the connector and contribute to releasing the connection between the bit and the departure device. A tensile connector between the bit and the movable member may apply a tension force to the movable member, urging the movable member toward an extended position in which the movable member is aligned coherently with a sloped face of the departure device. 1. A connector for coupling a bit to a departure device , comprising:a body having a yield strength between 205 MPa and 485 MPa;a push loading area at a proximal end portion of the body, the push loading area configured to receive an axial force;a torque loading area at a proximal end portion of the body, the torque loading area configured to receive a torque;a push transmission area at a distal end portion of the body, the push transmission area configured to transmit the axial force; anda torque transmission area at a distal end of the body, the torque transmission area configured to transmit the torque.2. The connector of claim 1 , the body having a yield strength between 380 MPa and 450 MPa.3. The connector of claim 1 , the body being made of aluminum bronze.4. The connector of claim 1 , the body defining one or more recesses extending from the proximal end portion toward the distal end portion of the body.5. The connector of claim 4 , at least a portion of the torque loading area being located on a laterally-facing surface adjacent at least one of the one or more recesses claim 4 , or at least a portion ...

ROTARY STEERABLE DRILLING ASSEMBLY AND METHOD

A rotary steerable drilling assembly for directional drilling includes a driveshaft rotatably disposed in a driveshaft housing, a bend adjustment assembly coupled to the driveshaft housing, a bearing mandrel coupled to the bend adjustment assembly, and a torque control assembly including a rotor configured to couple with a drill string, a stator assembly coupled to the downhole motor, and a torque control actuator assembly configured to control the amount of torque transmitted between the rotor and the stator assembly, wherein the bend adjustment assembly includes a first position providing a first deflection angle between a longitudinal axis of the driveshaft housing and a longitudinal axis of the bearing mandrel, wherein the bend adjustment assembly includes a second position providing a second deflection angle between the longitudinal axis of the driveshaft housing and the longitudinal axis of the bearing mandrel, the second deflection angle being different from the first deflection angle. 1. A rotary steerable drilling assembly for directional drilling , comprising:a driveshaft rotatably disposed in a driveshaft housing;a bend adjustment assembly coupled to the driveshaft housing;a bearing mandrel coupled to the bend adjustment assembly; and a rotor configured to couple with a drill string;', 'a stator assembly coupled to the downhole motor; and', 'a torque control actuator assembly configured to control the amount of torque transmitted between the rotor and the stator assembly;, 'a torque control assembly comprisingwherein the bend adjustment assembly includes a first position configured to provide a first deflection angle between a longitudinal axis of the driveshaft housing and a longitudinal axis of the bearing mandrel; andwherein the bend adjustment assembly includes a second position configured to provide a second deflection angle between the longitudinal axis of the driveshaft housing and the longitudinal axis of the bearing mandrel, the second deflection ...

Method for Establishment of a New Well Path from an Existing Well

A method is for establishing a new well path from an existing well, wherein the existing well, at least in a portion where the new well path is to be established, is delineated radially by a casing. The method comprises disposing and anchoring a plug base in the well; providing a plug above the plug base in the well and along a longitudinal section thereof, wherein the plug, at least in a portion thereof, covers substantially the entire cross-section of the well; removing a portion of the plug in such a manner that at least a cross-sectional section of the plug remains on the outside of the casing; disposing and anchoring a direction-guiding element in the well, and at least partially within the longitudinal section; and with the direction-guiding element, guiding a drilling tool against the inside of the casing in the existing well path in order to form a hole through the casing, and through the remaining cross-sectional section of the plug within the longitudinal section, which opens up to formation of a new well path. The method also comprises conducting a perforation tool down into the casing and to the longitudinal section where the plug is to be set; forming holes in the casing and along the longitudinal section by means of the perforation tool; and pumping a fluidized plugging material down through the string and out into the casing, thus also into the annulus via the holes in the casing. 1. A method for establishment of a new well path from an existing well , wherein the existing well , at least in a portion Where the new well path is to be established , is delineated radially by a casing , and wherein the method comprises:(A) disposing and anchoring a plug base in the well;(B) providing a plug above the plug base in the well and along a longitudinal section thereof, wherein the plug, at least in a portion thereof, covers substantially the entire cross-section of the well;(C) removing a portion of the plug in such a manner that at least a cross-sectional ...

PROTECTION OF CASING LOWSIDE WHILE MILLING CASING EXIT

The lowside of a casing joint is protected from wear while milling a casing exit for a lateral borehole. The casing joint is coupled to a casing string and is made of a material that is softer than that of the casing string. A whipstock assembly is arranged within the casing joint and has a deflector surface operable to direct a drilling assembly into a sidewall of the casing joint to create the casing exit. A wear sleeve is coupled to and extends axially from the whipstock assembly, the wear sleeve defining a throat that extends axially along the axial length of the wear sleeve and transitions into the deflector surface. The axial length of the wear sleeve extends beyond a point of contact where the drilling assembly would otherwise engage the lowside of the casing joint. 1. A well system subassembly , comprising:a casing joint coupled to a casing string and defining a lowside therein, the casing joint being made of a first material that is softer than that of the casing string;a whipstock assembly arranged within the casing joint and having a deflector surface operable to direct a drilling assembly into a sidewall of the casing joint to create a casing exit; anda wear sleeve coupled to and extending axially from the whipstock assembly, the wear sleeve defining a throat that extends along an axial length of the wear sleeve and transitions into the deflector surface, wherein the axial length of the wear sleeve extends across a point of contact where the drilling assembly would otherwise engage the lowside of the casing joint, whereby the wear sleeve protects the lowside of the casing joint from wear caused by the drilling assembly.2. The subassembly of claim 1 , wherein the first material is aluminum.3. The subassembly of claim 1 , wherein the wear sleeve is made of a second material that is harder than the first material.4. The subassembly of claim 1 , wherein the wear sleeve is formed as an integral extension of the whipstock assembly.5. The subassembly of claim 1 ...

Rotary Steerable Push-the-Bit Drilling Apparatus with Self-Cleaning Fluid Filter

A steerable drilling apparatus includes a control system inside a cylindrical housing connected to a drill bit having radially-extendable pistons. A fluid-metering assembly directs a piston-actuating fluid into fluid channels leading to respective pistons. The control system controls the fluid-metering assembly to allow fluid flow to selected pistons, causing the actuated pistons to temporarily extend in the opposite direction to a desired wellbore deviation, thereby deflecting the drill bit away from the borehole centerline. An upper member in the fluid-metering assembly can be moved to stabilize, steer, and change TFA within the drill bit. The control system and drill bit are connected so as to facilitate removal to change the drill bit's steering section and cutting structure configuration or gauge simultaneously. The apparatus may incorporate a fluid filter module mounted to the control system. The pistons may incorporate auxiliary cutting elements to provide near-bit reaming capability. 154-. (canceled)55. A drilling apparatus for drilling a borehole in a subterranean formation , the drilling apparatus comprising:a body having a central axis, an upper end, a lower end, a central channel extending axially from the upper end, and a plurality of circumferentially-spaced fluid channels extending axially from the upper end and radially spaced from the central channel, wherein the central channel is configured to flow drilling fluid through the body;a plurality of pistons housed in the body, wherein each fluid channel in the body extends to one of the piston and is configured to flow drilling fluid to the corresponding piston, wherein each piston is configured to move radially outward relative to the body in response to drilling fluid supplied by the corresponding fluid channel, and wherein each piston has a formation facing surface including a plurality of cutting elements configured to engage the formation;a fluid-metering assembly configured to selectively meter ...

Steerable Drilling System

A steerable system comprises a fluid powered motor having a rotor and a stator and a bias arrangement having a plurality of bias pads connected to the stator so as to be rotatable therewith, the bias pads being moveable to allow the application of a side load to the steerable system. 120-. (canceled)21. A steerable drilling system , comprising:a fluid powered motor having a rotor and a stator within a housing, the stator being coupled into a drillstring so as to be rotatable therewith, and a bias arrangement having a plurality of bias pads connected to the stator so as to be rotatable therewith, the bias pads being moveable by a pressure differential between fluid upstream of the fluid powered motor and fluid in a wellbore annulus outside of the fluid powered motor to allow the application of a side load to the steerable system.22. The system as recited in claim 21 , wherein each bias pad is moveable by an actuator.23. The system as recited in claim 22 , wherein each actuator comprises a piston to which fluid can be supplied to move the associated bias pad from a retracted position towards an extended position.24. The system as recited in claim 23 , further comprising a control arrangement for controlling the operation of the actuators.25. The system as recited in claim 24 , wherein the control arrangement includes a plurality of solenoid actuated valves.26. The system as recited in claim 25 , wherein each solenoid actuated valve includes a bistable actuator.27. The system as recited in claim 24 , wherein the control arrangement includes a control unit claim 24 , the motor is used to drive a drill bit claim 24 , and the motor is located between the drill bit and at least part of the control unit.28. The system as recited in claim 27 , wherein the control unit includes at least one sensor arranged to sense a drilling parameter.29. A system claim 27 , comprising: a fluid powered motor disposed along a drillstring and rotatable with the drillstring; and', 'a bias ...

Coiled Tubing Extended Reach with Downhole Motors

Disclosed is a method to enhance the reach of coiled tubing in the lateral section of a wellbore. The application of this method may enhance the use of coiled tubing in drilling very deep flowing wells. Similarly, the method may be applied in increasing the reach of the tubing for other coiled tubing well intervention applications. The method involves the use of downhole motor assemblies, stabilizers, and dynamic torque arrestors to rotate coiled-tubing string. 1. A method of drilling with coiled tubing , the method comprising;attaching a drill assembly to a coiled tubing;attaching a second motor assembly to the drill assembly;inserting the second motor assembly, the drill assembly, and the coiled tubing downhole;attaching a first motor assembly to the coiled tubing;inserting the first motor assembly downhole;rotating the coiled tubing with the first motor assembly; androtating the drill assembly with the second motor assembly.2. The method of claim 1 , wherein the first motor assembly rotates the coiled tubing between the first motor assembly and the second motor assembly.3. The method of claim 1 , wherein the drill assembly further comprises a drill bit.4. The method of claim 1 , wherein the first motor assembly is connected to a stabilizer.5. The method of claim 4 , further wherein there are at least two stabilizers.6. The method of claim 1 , wherein the first motor assembly is connected to a dynamic torque arrestor.7. The method of claim 6 , further wherein there are at least two dynamic torque arrestors.8. The method of claim 1 , wherein the motor assembly is connected to both a stabilizer and a dynamic torque arrestor.9. The method of claim 8 , wherein the first motor assembly is connected to a plurality of stabilizers and a plurality of dynamic torque arrestors.10. A dynamic torque arrestor claim 8 , comprising:a casing;an adapter at one end of the casing; anda connector opposite the adapter.11. The dynamic torque arrestor of claim 10 , wherein the casing ...

ADJUSTABLE BENT HOUSINGS WITH SACRIFICIAL SUPPORT MEMBERS

Adjustable drill string housings are described for use in the directional drilling of wellbores, e.g. wellbores for hydrocarbon recovery wells. The adjustable drill string housings permit adjustment of a bend angle in the housings without removing the housings from a wellbore. In some exemplary embodiments, the bend angle can be adjusted by changing the internal stresses in a support member carried by the housings. In other embodiments, the bend angle may be adjusted by causing failure of sacrificial support members carried by the housings, and the failure may be caused by delivering chemicals through a chemical delivery system to the sacrificial support members. Methods of operating the adjustable drill string housings include multi-lateral drilling operations wherein the bend angle is adjusted when a casing window has been detected. 1. An adjustable drill string housing , comprising: a first operational configuration wherein the annular member maintains an internal preload therein such that the upper and lower longitudinal axes are disposed at a first bend angle with respect to one another, and', 'a second operational configuration wherein at least a portion of the internal preload is relieved such that the upper and lower longitudinal axes are disposed at a second bend angle with respect to one another;, 'an annular member having an upper end and a lower end, the annular member defining an upper longitudinal axis extending through the upper end and a lower longitudinal axis extending through the lower end, the annular member deformable about a bend axis betweenat least one sacrificial support member carried by the annular member, the at least one sacrificial support member extending across the bend axis and coupled to the annular member to maintain at least a portion of the internal preload in the annular member such that failure of the at least one sacrificial support member induces the annular member to move to the second operational configuration.2. The ...

Directional Drill Hammer Pullback Device

A pullback system to install or replace underground utilities that is used with a hammer used in horizontal directional drilling operations. The system comprises a drill bit attached to the hammer. The drill bit comprises a cutting face comprising a first and second passage. The system further comprises a pullback adapter comprising an attachment member, a first member, and a second member. The attachment member may be secured to the cutting face of the drill bit by inserting the first member of the pullback adapter through the first passage of the cutting face and inserting the second member of the pullback adapter through the second passage of the cutting face. The first member secures to the second member within an internal cavity of the drill bit to hold the attachment member for movement with the drill bit. A new pipe may be secured to a shackle on the pullback adapter. The drilling machine will then pull the hammer rearwardly through the borehole which in turn pulls the new pipe into the borehole.

Apparatus and method for drilling a directional borehole in the ground

A directional casing drilling system includes a casing string, a drilling rig and a retrievable Bottom Hole Assembly (BHA). The drilling rig includes a casing drive for rotating the casing string in the borehole, a control system for controlling the casing drive, and a mud pump for pumping a continuous flow of drilling mud into the casing string. The BHA includes a torque transfer section, with which it is secured in the casing string, and a drill bit section held in a drilling position in the torque transfer section. It further includes a mud drive that rotates the drilling position of the drill bit section about the longitudinal axis of the torque transfer section, and a communicating device for communicating the orientation of the drill bit to the control system. The BHA is steered by adjusting the rotational speed of the casing string.

Mechanics experiment system and method for perforated string in underground perforating blasting of oil-gas well

A mechanics experiment system for a perforated string in underground perforating blasting of an oil-gas well. The system includes an experiment water pool, a perforated string arranged in the experiment water pool, a signal amplifier, an A/D converter and a computer. The signal amplifier, the A/D converter and the computer are arranged outside the experiment water pool and are sequentially electrically connected; the perforated string includes an oil pipe, a packing tube, a sleeve, an acceleration testing short joint A, a damper, an acceleration testing short joint B and a perforating gun which are sequentially connected from top to bottom.

EXPANDABLE REENTRY COMPLETION DEVICE

A method includes severing a liner positioned in a first wellbore at least partially lined with casing and thereby providing a severed end, conveying a mid-completion assembly into the first wellbore and receiving the severed end within a tail pipe assembly of the mid-completion assembly, wherein a smallest inner diameter of the mid-completion assembly is greater than or equal to a smallest inner diameter of the liner and thereby permits tools sized for operations in the liner to pass through the mid-completion assembly, actuating an expandable device of the mid-completion assembly to sealingly engage an inner surface of the casing uphole from the severed end, and drilling a second wellbore extending from the first wellbore. 1. A method , comprising:severing a liner positioned in a first wellbore at least partially lined with casing and thereby providing a severed end;conveying a mid-completion assembly into the first wellbore and receiving the severed end within a tail pipe assembly of the mid-completion assembly, wherein a smallest inner diameter of the mid-completion assembly is greater than or equal to a smallest inner diameter of the liner and thereby permits tools sized for operations in the liner to pass through the mid-completion assembly;actuating an expandable device of the mid-completion assembly to sealingly engage an inner surface of the casing uphole from the severed end; anddrilling a second wellbore extending from the first wellbore.2. The method of claim 1 , wherein receiving the severed end within the tail pipe assembly comprises engaging sealing elements disposed on an inner surface of the tail pipe assembly with an outer surface of the severed end.3. The method of claim 1 , wherein the mid-completion assembly further includes an orientation device and the method further comprises:conveying a deflector tool into the first wellbore;angularly orienting the deflector tool within the first wellbore using the orientation device;securing the deflector ...

BI-MILL FOR MILLING AN OPENING THROUGH A WELLBORE CASING AND IN A PREPLANNED LATERAL DRILLING PATH IN DEPARTURE FROM THE WELLBORE AXIS

A bi-mill mills an opening through a wellbore casing in a preplanned lateral drilling path in departure from the wellbore axis and through the wellbore casing or rock formation and in the direction of the drilling path. The bi-mill provides increase debris removal and cutting surfaces and includes an assembly having a lead mill and a follow mill and attaches to the wellbore whipstock. The lead mill further includes fluid passageways leading from the lead mill and exiting the nose of the lead mill. Debris removal channels channel milled debris away from the lead mill and in the direction of the follow mill form in a helical configuration for guiding debris milled by lead mill inserts along the debris removal channels. The lead mill and follow mill continue milling through the wellbore casing and into the underground rock formation a distance sufficient to initiate the preplanned drilling path. 1. A bi-mill for milling an opening through a wellbore casing in initiating a preplanned lateral drilling path in departure from the wellbore axis and through the wellbore casing or wellbore rock formation , and further continuing into underground rock formation outside the wellbore and in the direction of the preplanned lateral drilling path and as guided by a wellbore whipstock , comprising:an assembly comprising a lead mill and a follow mill, said lead mill threadably attached to said follow mill, said lead mill comprising;a body forming a structural base for said lead mill, and further comprising:a smooth bore in the lead mill for receiving a circumferentially-grooved shear bolt, said shear bolt comprising a threaded end threadably attached to the wellbore whipstock and with the unthreaded end inserted into said smooth bore, said lead mill comprising a plurality of fluid passageways wherein said smooth bore comprises a sufficiently shallow depth so as to not intersect with internal fluid passageways and so as to not exit the distal side of said lead mill, said lead mill ...

ROTARY STEERABLE SYSTEM WITH ROLLING HOUSING

A directional drilling device for drilling a wellbore having a wall, the device including an outer housing, a driveshaft located at least partially within and selectively rotatable with respect to the outer housing. The device also includes extendable members oveable to extend radially outwardly from the outer housing and so as to apply a force onto the wellbore wall and move the device off-center in the wellbore in a direction. The device further includes a hydraulic actuation system operable to control hydraulic fluid to extend and retract of the extendable members. The rotational orientation of the extendable members is controllable by rotation of the outer housing by the driveshaft and the rotational orientation of the extendable members and the outer housing and thus the direction may be maintained by extension of the extendable members into contact with the borehole to restrain the outer housing from rotating. 1. A directional drilling device for drilling a wellbore having a wall , comprising: an outer housing , a driveshaft located at least partially within and selectively rotatable with respect to the outer housing , extendable members moveable to extend radially outwardly from the outer housing and so as to apply a force onto the wellbore wall and move the device off-center in the wellbore in a direction , a hydraulic actuation system operable to control hydraulic fluid to extend and retract of the extendable members , wherein the rotational orientation of the extendable members is controllable by rotation of the outer housing by the driveshaft , and wherein the rotational orientation of the extendable members and the outer housing and thus the direction may be maintained by extension of the extendable members into contact with the borehole to restrain the outer housing from rotating.2. The device of claim 1 , wherein the extendable members are extendable in unison.3. The device of claim 1 , wherein the extendable member is extendable radially outwardly ...

MINING DRILL WITH GRADIENT SENSING

A drill for excavating a bore in the earth includes a steerable boring tool configured to excavate a bore and sensors coupled to the boring tool. The sensors are spaced apart from one another at multiple azimuthal locations around the steerable boring tool and the sensors are configured to detect a mineral property in the earth adjacent the steerable boring tool. 1. A drill for excavating a primary bore in the earth and for excavating a plurality of side bores in the earth , the drill comprising:a steerable primary boring tool configured to excavate a primary bore;a secondary boring tool configured to excavate a plurality of side bores, wherein the side bores extend outward from the primary bore at a plurality of azimuthal locations around the primary bore; anda sensor configured to detect a mineral property in the earth adjacent each of the side bores.2. The drill of claim 1 , further comprising:a controller coupled to the sensor, the controller configured to compare the detected mineral property associated with each of the side bores, determine a locally preferred drilling direction in response to the comparison, and provide an output indicative of the locally preferred drilling direction to the steerable boring tool.3. The drill of claim 2 , wherein the locally preferred drilling direction is toward the side bore associated with the highest detected concentration of the mineral property.4. The drill of claim 2 , wherein the locally preferred drilling direction is toward a side bore associated with a detected concentration of the mineral property above a threshold value.5. The drill of claim 1 , further comprising:a controller coupled to the sensor, the controller configured to compare the detected mineral property associated with each of the side bores at a plurality of sites along the primary bore, determine a locally preferred drilling direction in response to the comparison at each of the plurality of sites along the primary bore, determine a preferred overall ...

TUNABLE WELLBORE PULSATION VALVE AND METHODS OF USE TO ELIMINATE OR SUBSTANTIALLY REDUCE WELLBORE WALL FRICTION FOR INCREASING DRILLING RATE-OF-PROGRESS (ROP)

A tunable wellbore pulsation valve reduces drillstring friction in a wellbore. An upper valve plate and a lower valve plate, and upper valve plate orifice and lower valve plate orifice enabling throughflow. A Moineau motor rotates the upper valve plate while the lower valve plate remains stationary. Fluid flow causes a first fluid state of fluid passing through both the upper valve plate and the lower valve plate when the fluid passing causes rotation of the upper valve plate to align the upper valve plate orifice with the lower valve plate orifice. Increased flow efficiency produces more powerful fluid pressure pulsations and axial vibrations without increasing pump pressure at the surface of the wellbore, yielding increased wellbore friction reduction while expending the same or less energy at the surface pump than would be expended in the absence of the reduced turbulent and shear conditions and increased laminar conditions. 1. A tunable wellbore pulsation valve for reducing drillstring friction in a wellbore , said tunable wellbore pulsation valve comprisingan upper valve plate anda lower valve plate,wherein said upper valve plate comprises an upper valve plate orifice enabling throughflow and said lower valve plate comprises a lower valve plate orifice enabling throughflow,said upper valve plate associated with a Moineau motor and shouldered against a rotor outlet of said Moineau motor, said upper valve plate rotating during fluid rotation of said Moineau motor, while said lower valve plate remains stationary, wherein said upper valve plate and said lower valve plate are configured for receiving and flowing helical fluid flow progressing centripetally outward from a central axis of said tunable wellbore pulsation valve as said helical fluid flow exits said rotor outlet of said Moineau motor,wherein fluid flow through a drillstring causes a first fluid state of fluid passing through both said upper valve plate and said lower valve plate when said fluid passing ...

Drilling A Borehole With A Steering System Using A Modular Cam Arrangement

A cam system for use with a rotary steerable system, the cam system includes a housing, a cam positioned at least partially within the housing, and a solid cam shaft engaged with the cam and positioned at least partially within the housing, wherein the cam is operable to adjust an azimuthal orientation of the solid cam shaft. 1. A cam system for use with a rotary steerable system , the cam system comprising:a housing;a cam positioned at least partially within the housing; anda solid cam shaft engaged with the cam and positioned at least partially within the housing, wherein the cam is operable to adjust an azimuthal orientation of the solid cam shaft.2. The cam system of claim 1 , further comprising a shaft cap coupled to the solid cam shaft at an end opposite of the cam claim 1 , wherein the shaft cap comprises a bore and a channel to allow a drilling fluid to flow from an area outside the shaft cap between the solid cam shaft and the housing into the bore of the shaft cap.3. The cam system of claim 2 , wherein the shaft cap is coupleable to a hollow constant velocity shaft and the shaft cap is pivotable to pivot rotation of the solid cam shaft at the azimuthal orientation to rotation about a central axis of a CV section.4. The cam system of claim 2 , wherein the end of the solid cam shaft extends axially further than the housing to attach to the shaft cap outside of the housing.5. The cam system of claim 1 , wherein a drilling fluid is flowable in an area between the solid cam shaft and the housing.6. The cam system of claim 1 , further comprising a bearing positioned between the cam and the housing and a lubrication system claim 1 , the lubrication system comprising:a flow sleeve positioned between the solid cam shaft and the housing to define a cavity between the flow sleeve and the housing;a piston that fluidly separates the cavity into a first chamber and a second chamber; anda biasing device positioned in the second chamber and between the piston and an end ...

ROTARY STEERABLE SYSTEM WITH CUTTERS

A rotary steerable tool may include a tool body with an upper end and a lower end. Additionally, the tool body may include at least one steering assembly extending from the tool body and includes at least one steering actuator configured to extend beyond other portions of the steering assembly. Furthermore, at least one cutter may be disposed on the rotary steerable tool a distance from the at least one steering actuator. 1. A rotary steerable tool , comprising:a tool body, wherein the tool body has an upper connection end and a lower connection end, the lower connection end including a pin connection or a box connection;at least one steering assembly carried by the tool body and extending radially from the tool body, the at least one steering assembly comprising at least one steering actuator configured to extend radially beyond other portions of the steering assembly; andat least one cutter on the rotary steerable tool a distance from the at least one steering actuator, the at least one cutter positioned between the upper connection end and the lower connection end of the tool body carrying the at least one steering assembly,wherein the rotary steerable tool, excluding the at least one cutter, has a first diameter when the steering actuator is not extended, and the at least one cutter is at a diameter greater than the first diameter.2. The rotary steerable tool of claim 1 , wherein the at least one steering assembly comprises at least one piston assembly configured to house the at least one steering actuator.3. The rotary steerable tool of claim 2 , wherein the steering actuator comprises a piston within the piston assembly to extend or retract to provide a steering offset.4. The rotary steerable tool of claim 1 , wherein the steering actuator comprises an actuatable bias pad.5. The rotary steerable tool of claim 1 , wherein the at least one cutter is radially moveable.6. The rotary steerable tool of claim 1 , wherein the at least one cutter is on the at least one ...

ADJUSTMENT MECHANISMS FOR ADJUSTABLE BENT HOUSINGS

Adjustable drill string housings are described for use in the directional drilling of wellbores, e.g. wellbores for hydrocarbon recovery wells. The adjustable drill string housings permit adjustment of a bend angle in the housings without removing the housings from a wellbore. In some exemplary embodiments, the bend angle can be adjusted by changing the internal stresses in a support member carried by the housings. In other embodiments, the bend angle may be adjusted by causing failure of sacrificial support members carried by the housings, and the failure may be caused by delivering chemicals through a chemical delivery system to the sacrificial support members. Methods of operating the adjustable drill string housings include multi-lateral drilling operations wherein the bend angle is adjusted when a casing window has been detected. 1. An adjustable drill string housing , comprising:an annular member having an upper end and a lower end, the annular member defining an upper longitudinal axis extending through the upper end and a lower longitudinal axis extending through the lower end, the annular member deformable about a bend axis between a first configuration wherein the upper and lower longitudinal axes are disposed at a first bend angle with respect to one another and a second configuration wherein the upper and lower longitudinal axes are disposed at a second bend angle with respect to one another; andan adjustment mechanism comprising at least one support member carried by the annular member radially offset from the upper and lower longitudinal axes and extending across the bend axis, the adjustment mechanism selectively movable between a first arrangement for maintaining the annular member in the first configuration and a second arrangement for maintaining the annular member in the second configuration, wherein the adjustment mechanism changes an real stress in the at least one support member to move between the first and second arrangements.2. The ...

ROTARY STEERABLE DRILLING ASSEMBLY WITH A ROTATING STEERING DEVICE FOR DRILLING DEVIATED WELLBORES

A drilling assembly for drilling deviated wellbores is disclosed that in one embodiment includes a steering unit having an upper section coupled to a lower section through a tilt device, wherein an electro-mechanical actuation device tilts the tilt device about a selected location in the drilling assembly to cause the lower section to tilt relative to the upper section along a selected direction while the drill string is rotating. 1. A drilling assembly for use in drilling of a wellbore , comprising:a steering unit having a tilt device and an actuation device, wherein a first section and a second section of the drilling assembly are coupled through the tilt device, andwherein the actuation device causes a tilt of the tilt device to cause the first section to tilt relative to the second section along a selected direction while the steering device is rotating.2. The drilling assembly of claim 1 , wherein the actuation device applies forces on the tilt device in a manner that maintains the tilt device geostationary or substantially geostationary when the steering assembly is rotating.3. The drilling assembly of claim 1 , wherein the tilt device includes an adjuster and wherein the actuation device applies forces onto the adjuster to cause the adjuster to move along a selected direction.4. The drilling assembly of claim 3 , wherein the tilt device further includes a joint coupled to the actuation device claim 3 , wherein applying forces on the adjuster by the actuation device causes the first section to tilt about the joint relative to the second section.5. The drilling assembly of claim 1 , wherein movement of at least a part the actuation device is selectively adjustable to cause the first section to tilt with a selected tilt relative to the second section.6. The drilling assembly of claim 4 , wherein a tilt of the joint is selectively adjustable to cause the first section to tilt with a selected tilt relative to the second section.7. The apparatus of claim 1 , ...

ROTARY STEERABLE SYSTEM WITH A STEERING DEVICE AROUND A DRIVE COUPLED TO A DISINTEGRATING DEVICE FOR FORMING DEVIATED WELLBORES

A rotary drilling apparatus for drilling deviated wellbores Is disclosed that in one embodiment includes a drilling assembly that further includes a drilling motor coupled to a drive member to rotate a disintegrating device, a housing outside the drive member having a lower section and an upper section, and a steering device disposed outside the drive member that tilts the lower section relative to the upper section and maintains the tilt geostationary or substantially geostationary when the drilling assembly is rotating to drill a deviated section of the wellbore. 1. A rotary steerable drilling assembly , comprising:a drilling motor coupled to a drive member to rotate a disintegrating device;a housing outside the drive member having a first section and a second section; anda steering device that tilts the first section relative to the second section and maintains the tilt substantially geostationary when the drilling assembly is rotating to drill a deviated section of the wellbore.2. The drilling assembly of claim 1 , wherein the steering device includes: an actuation device; and a tilt device coupled to the first section and second section; and wherein the actuation device applies selected forces onto the tilt device to cause the first section to tilt relative to the second section.3. The drilling assembly of claim 2 , wherein the tilt device includes an adjuster coupled to a joint and wherein the actuation device applies the selected forces onto the adjuster to cause the first section to tilt relative to the second section about the joint.4. The drilling assembly of claim 2 , wherein the actuation device includes one or more spaced apart actuators claim 2 , and wherein each such actuator applies a selected force on the adjuster to tilt the first section relative to the second section.5. The apparatus of claim 4 , wherein each actuator rotates when the drilling assembly rotates and applies force on the adjuster during each revolution of the drilling assembly.6. ...

DRILLING ASSEMBLY UTILIZING TILTED DISINTEGRATING DEVICE FOR DRILLING DEVIATED WELLBORES

A drilling assembly for use in drilling a wellbore is disclosed that in one embodiment includes a steering unit that includes a tilt device in a disintegrating device and an electro-mechanical actuation device having a force application member that applies axial force on the disintegrating device to tilt the disintegrating device about the tilt device along a selected direction. In one embodiment, the actuation device translates a rotary motion into an axial movement of the force application member to apply the axial force on the disintegrating device to tilt the disintegrating device about the tilt device. 1. An apparatus for use in drilling a wellbore , comprising:a disintegrating device including a tilt device configured to tilt the disintegrating device about the tilt device; andan electro-mechanical actuation device including at least one force application member that applies force on the disintegrating device to tilt the disintegrating device about the tilt device.2. The apparatus of claim 1 , wherein the electro-mechanical actuation device translates a rotary motion into an axial movement of the at least one force application member that applies an axial force on the disintegrating device to tilt the disintegrating device about the tilt device.3. The apparatus of claim 1 , wherein the actuation device includes a rotary member having a tilt in contact with the at least one force application member claim 1 , wherein the rotary member causes the force application member to reciprocate to apply the force on the disintegrating device.4. The apparatus of claim 1 , wherein the at least one force application member is selected from a group consisting of: a rigid member; a non-rigid member; a member that includes an elastic section; and a pre-compressed member having a pre-compression force that is at least in part created by an axial force resulting from connecting the disintegrating device to a housing that contains the actuation device.5. The apparatus of further ...