Schmierfett

Preactivated organophilic clay gellant

A preactivated organophilic clay gellant that may be used to thicken organic compositions, especially, lubricating greases without the presence of a polar activator. The preactivated organophilic clay gellant may be prepared using certain process parameters namely shearing of the smectite-type clay prior to reaction with the organic cation, dilute reaction conditions and gentle drying of the organophilic clay or the preactivated organophilic clay gellant.

Oil based drilling muds

Oil-based drilling muds

An oil based drilling mud comprises (a) a base oil, (b) about 1 to about 170 parts by weight of an aqueous phase per 100 parts by weight of the oil, (c) about 0.25-40 g/l of at least one viscosifier, and (d) a hydrophobic weighting agent in amount sufficient to achieve a required mud density. The hydrophobic weighting agent is preferably barite. The drilling muds do not contain emulsifiers or oil wetting agents and are particularly advantageous in their reduction in oil retention on cuttings and smaller reduction in permeability of oil bearing formations. ...

EMULSION FOR USE IN DRILLING AND REPAIRING OIL WELLS

A grease

A grease composition comprises a nitrogencontaining component which is an oleophilic imidazoline and/or an oleophilic aminoamide formed between a fatty acid and a plyethylene polyamine, an oleophilic clay product, a polyethylene glycol and a lubricating oil. The clay product, preferably passing a 250 mesh (U.S.) screen, is formed (see Division C1) by treating an acid-exchanged clay such as hectorite with one or more of the above class of nitrogen-containing components and spray drying in the absence of oil. The product preferably bears 40 to 125% by weight, based on the clay, of the nitrogen compound on its surface. The clay product may contain 0.5-5% moisture and the grease itself preferably contains up to 1% water. The polyethylene glycol is preferably water-soluble and has a molecular weight between 500 and 1600, e.g. "Carbowax." The lubricating oil, present in an amount 10 to less than 100% by weight based on the clay, may be a mineral oil or a synthetic oil, e.g. esters of dibasic ...

MODIFIED ORGANOPHILIC CLAY COMPLEXES

Water based wellbore fluids.

MICRO BALLS ABSTENTION DRILLING LIQUID AS WELL AS THEIR USE

AQUEOUS DRILLING LIQUID

Coated products and use thereof in oil fields

CLAY-CATION COMPLEXES

An organophilic clay gellant comprising the reaction product of an organic cationic compound and a smectite-type clay having a cation exchange capacity of at least 75 milliequivalents per 100 grams of said clay, wherein said organic cationic compound contains (a) a first member selected from the group consisting of a .beta., .gamma.-unsaturated alkyl group, and a hydroxyalkyl group having 2 to 6 carbon atoms, and mixtures thereof, (b) a second member comprising a long chain alkyl group having 12 to 60 carbon atoms and (c) a third and fourth alkyl member.

BALANCED-ACTIVITY IMPROVED INVERSE EMULSION TO INHIBIT BRITTLE LUTITE HYDRATION IN OIL FIELDS

A BALANCED-ACTIVITY IMPROVED INVERSE EMULSION TO INHIBIT BRITTLE LUTITE HYDRATION IN OIL FIELDS This invention refers to an improved inverse emulsion that allows the adjustment of the dispersedphase activity, when used as a drilling fluid or a fluid to repair oil fields in order to inhibit brittle lutite hydration, or else when it is used as packing fluid to drag or suspend cuttings made by the drilling bit in said wells. The emulsion comprises the following components: heavy oil, brine, viscosity agent, with thermostabilizing properties in addition to being the main controller of filtration properties, as well as secondary emulsifier, main emulsifying agent; thickening agent; gelatinizing additive; and an alkaline earth metal hydroxide. The balanced-activity feature consists of feasibility to equal inverse emulsion brine activity with that pertaining to the formation to be drilled, in such a way as to avoid hole collapsing, causing improved well gage stability.

WATER BASED WELLBORE FLUIDS

The invention relates to water based wellboe fluids used during a hydrocarbon recovery process, such as drilling, fracturing, gravel packing and wellbore workover. According to the present invention, said wellbore fluid comprises a fluid loss additive and a bridging material that are hydrophobic in nature, hydrophobically modified or oil wettable. The wellbore fluid generates an active filter cake that once formed, is impermeable to an aqueous phase, thus reducing fluid loss and enduring reduced damage to the formation, yet simultaneously is permeable to the back flow of hydrocarbons during a hydrocarbon recovery process.

METHODS OF SEALING SUBTERRANEAN ZONES

The present invention provides improved methods of sealing a subterranean zone to remedy the uncontrolled flow of fluids into and out of the zone. The methods basically comprise preparing a sealing composition and placing the composition into the zone to be sealed. The placement of the composition is controlled in a manner whereby portions of the sealing composition are continuously converted to sealing masses which are successively diverted into permeable portions of the zone until all of the permeable portions are sealed.

DEFOAMING COMPOSITIONS AND METHODS

The present invention provides improved defoaming compositions and methods. The compositions of the invention are basically comprised of polypropylene glycol, particulate hydrophobic silica and a liquid diluent.

ORGANOPHILER CLAY/TONE COMPLEX AND PROCEDURE FOR ITS PRODUCTION.

ORGANOPHILER ORGANIC CLAY/TONE COMPLEX AS WELL AS PROCEDURE FOR THE INCREASE OF THE VISCOSITY OF AN ORGANIC SYSTEM USING THE CLAY/TONE COMPLEX.

A NOT WAESSRIGES LIQUID SYSTEM.

DRIED VORAKTIVIERTES ORGAN OF ALUMINA GELLING MEANS FOR ORGANIC COMPOSITIONS, IN PARTICULAR GREASES.

MODIFIED ORGANOPHILIC CLAY COMPLEXES

PRODUCTS WITH COATING AND THEIR APPLICATION AT OIL FIELDS

ПРОДУКТЫ С ПОКРЫТИЕМ И ИХ ПРИМЕНЕНИЕ НА НЕФТЯНЫХ МЕСТОРОЖДЕНИЯХ

В изобретении описано химическое средство для добычи нефти, главным образом, ингибитор образования отложений, который находится в форме его частиц, несущих покрытие, например, из диспергатора. Это покрытие может быть полимерным, таким как олигомерный полиэфир поликислоты, полимерный алкоксилированный спирт или продукт реакции конденсации жирной кислоты и полиамина, или оно может также представлять собой поверхностно-активное вещество и может быть использовано в форме суспензии в инертном нефтепродукте, таком как дизельное топливо или керосин, которую можно инжектировать в подземную формацию для ингибирования образования отложений, например отложений в нефтяных скважинах, в течение более длительного периода времени, чем в случае соединений, не имеющих покрытия.

ПЕСОК С КИСЛОТНЫМ ПОКРЫТИЕМ ДЛЯ ГРАВИЙНОГО ФИЛЬТРА И ОЧИСТКА ФИЛЬТРОВАЛЬНОГО ОСАДКА

Способ получения и применения полимеризованных, покрытых альфа-оксикарбоновой кислотой расклинивающих наполнителей для гравийного фильтра и удаления фильтровального осадка, оставленного жидкостью для бурения резервуаров. Согласно предпочтительному примеру покрытый полигликолевой кислотой песок используют для замены известного песка для гравийного фильтра, обычно используемого для набивки гравийного фильтра. В условиях скважины кислотный побочный продукт, образуемый в результате гидратации покрытого полигликолевой кислотой песка, способен размельчить растворимые и/или расщепляемые кислотой компоненты, содержащиеся в фильтровальном осадке. Такое взаимодействие способствует удалению фильтровального осадка и усилению потока углеводорода из разрабатываемого пласта. Покрытый полигликолевой кислотой песок может быть получен полимеризацией гликолевой кислоты с натуральным или синтетическим расклинивающим наполнителем, таким как коммерческий песок, размером 20-40 меш, при температурах около 210° ...

PROCESS FOR THE PREPARATION OF ORGANOCLAYS

A method for preparing organoclays from smectites for use as rheological control agents and in the preparation of nanocomposites. Typically, the clay is dispersed in water, and a substantially monomolecular layer of a water soluble polymer is applied to the surfaces of the clay. A surfactant is also applied to the clay to modify the surface hydrophilic/hydrophobic balance of the clay, and the organoclay is separated out for subsequent use.

ADDITIVE FOR INCREASING THE DENSITY OF AN OIL-BASED FLUID AND FLUID COMPRISING SUCH ADDITIVE

A method of formulating a wellbore fluid that includes grinding a solid particulate material and a polymeric dispersing agent to provide a resulting polymer coated solid material, and suspending the resulting polymer coated solid material in the wellbore fluid. At least a portion of the resulting polymer coated solid material has a particle diameter less than 2.0 microns, wherein the polymeric dispersing agent has a molecular weight greater than 10,000. Exemplary starting materials for the solid material include weighting agents including barite, calcium carbonate, dolomite, ilmenite, hematite or other iron ores, olivine, siderite and strontium sulfate as well as mixture and combinations of these and other similar weighting materials. The dispersant in one illustrative embodiment is a polymeric acrylate ester made from the monomers of stearyl methacrylate, butyacrylate, and acrylic acid.

METHODS OF USING DRILLING FLUIDS CONTAINING BIODEGRADABLE ORGANOPHILIC CLAY

Method of sealing subterranean zone

A subterranean zone is sealed to reduce the uncontrolled flow of fluids into and out of the zone, by introducing a sealing composition into the well bore fluids so that it rapidly converts to a high viscosity sealing mass therein and is deposited in said zone to seal it.

Zusammensetzungen auf Basis von Öl zur Abdichtung von unterirdischen Lagerstätten

OIL-BASED DRILLING MUDS

ORGANOPHILIC ORGANIC-CLAY COMPLEXES

USE FROM SURFACE-MODIFIED NANO-PARTICLES TO THE ÖLGEWINNUNG

ORGANOPHILE CLAY/TONE ADDITIVES AND IT ABSTENTION DRILLING LIQUIDS WITH RHEOLOGIC CHARACTERISTICS THE ONE SMALLER TEMPERATURE DEPENDENCE EXHIBITING

USE OF QUELLFAEHIGEN, SYNTHETIC LAYER SILICATES IN WAESSRIGEN DRILLING RINSING AND BOREHOLE TREATMENT MEANS.

ADDUCTS FROM LAMINATED MIXTURES METAL HYDROXIDES AND CLAY/TONE AS THICKENERS FOR WATER AND OTHER HYDROPHILIC LIQUIDS.

Coated products and use thereof in oil fields

ORGANOPHILIC CLAY ADDITIVES AND OIL WELL DRILLING FLUIDS WITH LESS TEMPERATURE DEPENDENT RHEOLOGICAL PROPERTIES CONTAINING SAID ADDITIVES

Conventional organophilic clays, when used as rheological additives in oil based invert muds, display marked viscosity loses in the mud when these muds are heated much above 350.degree. F, whereas muds prepared according to the present invention are dramatically more viscosity stable at temperatures through 500.DELTA. F. The present invention relates to the discovery of oil based invert emulsion drilling fluids that provides more stable drilling fluid viscosity and anti-settling performance over varying temperatures when compared to conventional fluids containing organoclays. As a result, the inventive fluids of this invention are ideal candidates for high temperature applications. This invention in another aspect of this invention is a process for improving the rheological properties of oil well drilling fluids particularly useful for oil- based invert emulsion types of drilling fluids. The new process uses as a rheological viscosifer for such fluids as a specific organoclay which when ...

CLAY COMPOSITION

ORGANOPHILIC POLYPHENOLIC ACID ADDUCTS

Organophilic polyphenolic materials which are effective fluid loss control additives for oil base well-working fluids are prepared from a polyphenolic material and one or more phosphatides. Preferred phosphatides are phosphoglycerides obtained from vegetable oils, most preferably commercial lecithin. Preferred polyphenolic materials comprise one or more of: humic acid; lignosulfonic acid; lignins; phenolic condensates; tannins; the oxidized, sulfonated, or sulfomethylated derivatives of these polyphenolic materials; and the water soluble or colloidally dispersible salts of these polyphenolic materials or these derivatives thereof.

ANIONICALLY MODIFIED ORGANOPHILIC CLAYS

ACID-COATED SAND FOR GRAVEL PACK AND FILTER CAKE CLEAN-UP

A method of the preparation and utilization of polymerized alpha- hydroxycarboxylicacid-coated proppants for gravel pack and removal of filter cake that was deposited by reservoir drilling fluid. In a preferred example, polyglycolic-acid-coated sand is used to replace conventional gravel pack sand typically used for gravel packing. Under downhole conditions, the acidic by- product generated from the hydration of polyglycolic-acid-coated sand can break down acid-soluble and/or acid-breakable components embedded in the filter cake. This reaction enhances the filter cake removal and the flow of hydrocarbon from the producing formation. The polyglycolic-acid-coated sand may be produced by polymerizing a glycolic acid with a natural or synthetic proppant like 20-40 mesh commercial sand, at temperatures of about 210 ~F or higher.

COATED PRODUCTS AND USE THEREOF IN OIL FIELDS

An oil field production chemical, especially a scale inhibitor, is in the fo rm of particles thereof carrying a coating e.g. of a dispersing agent. The coating may be polymeric such as an oligomeric polyacid polyester , a polymeric alkoxylated alcohol or a fatty acid polyamine condensate or it may also be a surfactant and may be used in the form of a suspension in an inert oil, such as diesel oil or kerosene which may be injected into a subterranean formation to inhibit the formation of deposits, e.g. scale in oil wells over a longer period than compounds free of the coating.

PUMPABLE ORGANOPHILIC CLAY/POLYAMIDE COMPOSITIONS USEFUL AS RHEOLOGICAL ADDITIVES

A novel pourable organophilic clay polyamide composition useful as a rheolog ical additive for organic fluid system comprising a) from about 5 to 15 weight percent of an organophilicly modified smectite- type clay, b) from about 25 to about 35 weight percent of one or more rheologically act ive polyamides and c) from about 40 to 60 weight percent of one or more organic solvents prefer ably selected from the group consisting of n-propanol, toluene and mineral spirit s. The organophilic clay polyamide composition is used in non-aqueous fluid sys tems such as paints, inks, and coatings to provide improved rheological properties to the system.

DRILLING SOLUTION WATER-BASED

GELLING UNSUPPORTED HAS ORGANOPHILIC CLAY FOR LUBRICATING GREASES, LUBRICATING GREASE THICKENED BY A GELLING UNSUPPORTED ORGANOPHILIC CLAY AND PREPARATION PROCESS OF THE CLAY-BASED GELLANTS PHAGOCYTES

EMULSION FOR USE IN DRILLING AND REPAIRING OIL WELLS

UNA EMULSION INVERSA MEJORADA, DE ACTIVIDAD BALANCEADA, PARA INHIBIR LA HIDRATACION DE LUTITAS DELEZNABLES, UTIL COMO FLUIDO DE PERFORACION O REPARACION DE POZOS PETROLEROS, EN LA QUE LA FASE CONTINUA ES UN ACEITE PESADO Y LA FASE DISPERSA ES UNA SALMUERA DE HALOGENURO DE METAL ALCALINO- TERREO, CON CONCENTRACIONES DE 2,5 X 10 A LA 5° A 3,2 X 10 A LA 5°PPM. CONSTITUIDA POR: UNA EMULSION ACEITE PESADO/SALMUERA, EN UNA PROPORCION 90- 60/10-40% EN VOLUMEN, EN UNA CANTIDAD EQUIVALENTE DE 25 A 90% EN PESO;AGENTE VISCOSIFICANTE Y TERMOESTABILIZADOR INTEGRADO A BASE DE ASFALTO SOPLADO YY GILSONITA EN UNA PROPORCION DE 2,0 A 5,0% EN PESO; AGENTE EMULSIFICANTE PRINCIPAL A BASE DE LA SAL DE CALCIO DE UN ACIDO ALQUIL- AROMATICO SULFONICO, EN UNA PROPORCION DE 0,5 A 2,0% EN PESO; AGENTE DENSIFICANTE A BASE DE BARITA HASTA 72% EN PESO; ADITIVO GELANTE A BASE DE ARCILLA ORGANOFILICA, PRODUCTO DE LA REACCION DE UNA BENTONITA CON UNA SAL CUATERNARIA DE AMONIO, DEL TIPO DEL CLORURO DE DIMETIL-DIALQUI L-AMONIO ...

METHODS OF PREPARING AND USING COATED PARTICULATES

The present invention involves methods of preparing coated particulates and using such coated particulates in subterranean applications such as production enhancement and sand control. One embodiment of the present invention provides a method of preparing coated particulates comprising the steps of coating particulates with a resin or a tackifying agent to create pre-coated particulates; and, covering the pre-coated particulates with a partitioning agent to create coated particulates. Another embodiment of the present invention provides a method of treating a subterranean formation comprising the steps of providing coated particulates made by a method comprising the steps of substantially coating particulates with a resin or a tackifying agent to create pre-coated particulates; and, substantially covering the pre-coated particulates with a partitioning agent to create coated particulates; substantially slurrying the coated particulates in a servicing fluid to create a coated particulate ...

ILTERKUCHENENTFERNUNG

WITH ACID COATED SAND FOR GRAVEL PACKING AND FILTER CAKE DISTANCE

PRE-TREATED A TONING, YOUR PREPARING AND USE FOR NON--HARMFUL DRILLING DREDGING

COMPOSITION AND PROCESS FOR OIL EXTRACTION

The invention relates to a composition for use in the extraction of oil and to a method of extracting oil using the composition. The composition comprises components A, B and C in which: A is a first solid hydrophobic material which is insoluble in an organic solvent selected from light fractions of petroleum, distillate, kerosene, acetone, gasoil, hexane, benzene and condensate; B is a second hydrophobic material which is either soluble in or can be emulsified with an organic solvent selected from light fractions of petroleum, distillate, kerosene, acetone, gasoil, hexane, benzene and condensate; and C is a retention improving material comprising a mineral material. A solvent, D, is added before the composition is used to treat an oil well. In oil well systems in which water or surfactant is pumped into the stratum through an injection well under pressure so that petroleum is forced from the rock stratum into the bottom hole zone of an extraction well, the composition is added to the extraction ...

GELIFIANT PREACTIVE A BASE D'ARGILE ORGANOPHILE POUR GRAISSES LUBRIFIANTES, GRAISSE LUBRIFIANTE EPAISSIE PAR UN GELIFIANT PREACTIVE A BASE D'ARGILE ORGANOPHILE ET PROCEDE DE PREPARATION DES GELIFIANTS PREACTIVES A BASE D'ARGILE

L'INVENTION CONCERNE UN GELIFIANT A BASE D'ARGILE ORGANOPHILE PREACTIVE POUVANT ETRE UTILISE POUR EPAISSIR DES COMPOSITIONS ORGANIQUES, EN PARTICULIER DES GRAISSES LUBRIFIANTES SANS LA PRESENCE D'UN ACTIVATEUR POLAIRE. LE GELIFIANT A BASE D'ARGILE ORGANOPHILE PREACTIVE PEUT ETRE PREPARE AU MOYEN DE CERTAINS PARAMETRES OPERATOIRES, A SAVOIR LE CISAILLEMENT DE L'ARGILE DE TYPE SMECTITE AVANT LA REACTION AVEC LE CATION ORGANIQUE, DES CONDITIONS REACTIONNELLES DILUEES ET UN SECHAGE MODERE DE L'ARGILE ORGANOPHILE OU DU GELIFIANT A BASE D'ARGILE ORGANOPHILE PREACTIVE.

CLAY COMPOSITION

GELLING OF THE TYPE CLAY ORGANOPHILE

IL EST CONSTITUE PAR LE PRODUIT DE REACTION D'UN CATION ORGANIQUE, D'ANIONS PRIMAIRE ET SECONDAIRE ET D'UNE ARGILE DU TYPE SMECTITE AYANT UNE CAPACITE D'ECHANGE DE CATIONS D'AU MOINS 75 MILLIEQUIVALENTS PAR 100 G D'ARGILE TEL QUE DE MULTIPLES COMPLEXES CATION ORGANIQUE-ANIONS ORGANIQUES SONT INTERCALES AVEC L'ARGILE DU TYPE SMECTITE ET QUE LES SITES D'ECHANGE DE CATIONS DE CELLE-CI SONT SUBSTITUES PAR LE CATION ORGANIQUE, LA QUANTITE DE CATION ORGANIQUE PRESENT ETANT D'AU MOINS (100 N) MILLIEQUIVALENTS OU N EST LA QUANTITE D'ANION PRIMAIRE EXPRIMEE EN MILLIEQUIVALENTS PAR 100 G D'ARGILE, CALCULEE EN ARGILE ACTIVE A 100. LE PRODUIT OBTENU, DISPERSE DANS UN LIQUIDE ORGANIQUE, A DE NOMBREUX USAGES : GRAISSES DE LUBRIFICATION, BOUES A BASE D'HUILE, FLUIDE D'OBTURATION DE FORAGES, DECAPANTS, PEINTURES, LIANTS DE SABLE DE FONDERIE, ETC. IT CONSISTS OF THE REACTION PRODUCT OF AN ORGANIC CATION, PRIMARY AND SECONDARY ANIONS AND A CLAY OF THE SMECTITE TYPE HAVING A CATION EXCHANGE CAPACITY OF AT LEAST 75 MILLIEQUIVALENTS PER 100 G OF CLAY SUCH AS MULTIPLE ORGANIC CATION-ORGANIC ANION COMPLEXES ARE INTERCALED WITH THE SMECTITE-TYPE CLAY AND THAT THE CATION EXCHANGE SITES THEREOF ARE SUBSTITUTED BY THE ORGANIC CATION, THE QUANTITY OF ORGANIC CATION PRESENT BEING AT LEAST (100 N) MILLIEQUIVALENTS WHERE N IS THE QUANTITY OF PRIMARY ANION EXPRESSED IN MILLIEQUIVALENTS PER 100 G OF CLAY, CALCULATED AS 100 ACTIVE CLAY. OIL BASE, DRILLING FLUID, STRIPPERS, PAINTS, FOUNDRY SAND BINDERS, ETC.

Organophilic polymers

Organophilic polymer adducts which are effective fluid loss control additives for oil base well-working fluids are prepared from an anionic or cationic water soluble polymer and one or more phosphatides. Preferred phosphatides are phosphoglycerides obtained from vegetable oils, most preferably commercial lecithin. Preferred polymers comprise polysaccharides or derivatives thereof and synthetic polymers.

Silane coated silicate minerals and method for preparing same

Phyllosilicate minerals which exhibit in their structure, sequentially, octahedral layers containing magnesium, aluminum and/or iron oxides and tetrahedral layers of silica, are superficially etched with dilute acid to remove the outer octahedral layer under controlled conditions which preserve the basic structural integrity of the mineral substance. The acid etch exposes silanol groups on the outer silicate layer of the mineral so that they become available to form silicon-to-oxygen-to-silicon-to-carbon bonds through condensation with organo-silanes. The condensation of the organo-silane with the conditioned mineral surface is accomplished by mixing the acid etched silicate mineral with the organo-silane in a suitable solvent system under mild conditions. The organo-silane may be chosen from either of two classes: those which impart an oleophilic surface to the mineral; or those which enable the mineral surface to form additional chemical bonds with reactive sites within certain polymers ...

Modified organophilic clay complexes, their preparation and non-aqueous systems containing them

An organophilic clay gellant useful for gelling organic liquids is disclosed which comprises the reaction product of (a) a smectite-type clay having a cation exchange capacity of at least 75 milliequivalents per 100 grams of said clay; (b) a primary anion selected from the group consisting of anions derived from organic sulfonic acids, alkylsulfates and mixtures thereof containing at least one lineal or branched alkyl group having greater than 9 carbon atoms, aromatic sulfonic acids and mixtures thereof; (c) a secondary anion different from said primary anion and selected from the group consisting of anions derived from organic acids having a pKa of less than about 11.0 and mixtures thereof; and (d) an organic cation is an amount sufficient to satisfy the cation in exchange capacity of said clay and the cationic activity of the primary and secondary anions wherein the resulting organic cation-organic anion complexes are intercalated with the smectite-type clay and wherein the combination ...

Method of making organophilic clays

A substantially dry method for making organophilic clays. Smectite clays, having a moisture content of less than 12% by weight are sprayed with an activator substance comprising about 1-10% by weight of the clay of a hydrophobic radical including those obtained from an "onium" base selected from a class consisting of ammonium, oxonium, sulfonium, arsonium, stibonium and telluronium. Organic amines and ammonium salts are preferred sources for the hydrophobic radical, and a substituted, hydrogenated tallow ammonium chloride is particularly preferred. The pretreated clay is then subjected to mechanical working such as by compaction to activate the clay. The subject method avoids the addition of water or other solvent to the clay when adding the activator substance, and therefore avoids the added cost of later removing the water, or other solvent. The physical properties of the dry processed organophilic clay are superior in some respects to organophilic clays made by the prior art methods.

MIKROKÜGELCHEN ENTHALTENDE BOHRFLÜSSIGKEIT SOWIE DEREN VERWENDUNG

OIL BASED DRILLING MUDS

CLAY COMPOSITION

... 1326968 Drill muds INTERNATIONAL MINERALS & CHEMICAL CORP 17 May 1971 [2 June 1970] 15371/71 Heading E1F [Also in Division Cl] A clay composition for use as a drilling mud or for use in slurry trenching comprises a bentonite or sub-bentonite clay containing minor amounts of (A) a water soluble polyalkylene oxide (e.g. polyethylene oxide) and (B) a water soluble polymer containing carboxyl groups or salts thereof or a polymer anhydride. B may be a copolymer of maleic anhydride and e.g. methyl vinyl ether, an acrylic type polymer or a graft copolymer of acrylic acid with a polyhydroxy compound e.g. sugars, starch or derivatives thereof or polymeric compounds containing hydroxyl groups e.g. polyvinyl alcohol.

VISCOSIFYING AGENT FOR DRILLING FLUIDS

ORGANOPHILIC CLAY HAVING ENHANCED DISPERSIBILITY

Methods of preparing and using coated particulates

Methods of preparing and using coated particulates

METHODS OF PREPARING AND USING COATED PARTICULATES

The present invention involves methods of preparing coated particulates and using such coated particulates in subterranean applications such as production enhancement and sand control. One embodiment of the present invention provides a method of preparing coated particulates comprising the steps of coating particulates with a resin or a tackifying agent to create pre-coated particulates; and, covering the pre-coated particulates with a partitioning agent to create coated particulates. Another embodiment of the present invention provides a method of treating a subterranean formation comprising the steps of providing coated particulates made by a method comprising the steps of substantially coating particulates with a resin or a tackifying agent to create pre-coated particulates; and, substantially covering the pre-coated particulates with a partitioning agent to create coated particulates; substantially slurrying the coated particulates in a servicing fluid to create a coated particulate ...

ASBESTOS COMPOSITION HAVING ORGANO-SILANE COATING

... 11865 ASBESTOS COMPOSITION HAYING ORGANO-SILANE COATING A chrysotile asbestos base material for enhancing the rheological properties of fluids such as oil base drilling fluids having a precipitation deposited siliceous layer and an organo-silane coating bonded to and overlying said siliceous layer. S P E C I F I C A T I O N ...

CLAY-CATION COMPLEXES

OIL BASED COMPOSITIONS FOR SEALING SUBTERRANEAN ZONES AND METHODS

The present invention provides oil based compositions and methods of using the compositions for sealing subterranean zones. The compositions are basically comprised of oil, a hydratable polymer, an organophillic clay and a water-swellable clay.

PRETREATED CLAYS, THEIR PREPARATION AND USE IN FORMULATING DRILLING MUDS NOT AGGRESSIVE TO LAYER CLAYS

Disclosed is a process for preparing aqueous, clay-based muds, not aggressive to layer clays, which process comprises a first step in which clay is treated with an aqueous solution containing the necessary amount of dispersant to fluidify the mud; a second step, of separation of so treated clay from the aqueous solution containing any not adsorbed dispersant, and, finally, a step of re-dispersion of so treated clay in water, in order to formulate the mud.

Methods of using drilling fluids containing biodegradable organophilic clay

Methods of treating a wellbore comprise displacing a drilling fluid comprising an organophilic clay treated with a quaternary ammonium surfactant having an amide linkage into the wellbore. Methods of drilling a wellbore comprise: applying torque to a bit within the wellbore and concurrently applying force to urge the bit to extend through the wellbore; and circulating a drilling fluid past the bit to remove cuttings therefrom, the drilling fluid comprising an organophilic clay treated with a quaternary ammonium surfactant having an amide linkage. Methods of preparing a drilling fluid comprise: forming an organophilic clay treated with a quaternary ammonium surfactant having an amide linkage; and combining the organophilic clay with an oil-based fluid.

Entschäumerzusammensetzungen für Bohrlochbehandlungsflüssigkeiten

Organophilic organic-clay complexes

An organophilic clay gellant is disclosed which comprises the reaction product of an organic cation compound, an organic anion, and a smectite-type clay having a cation exchange capacity of at least 75 milliequivalents per 100 grams of said clay. The organic cation compound has the formula: wherein R1 is selected from the group consisting of a beta , gamma -unsaturated alkyl group and a hydroxyalkyl group having 2 to 6 carbon atoms and mixtures thereof; R2 is a long chain alkyl group having 12 to 60 carbon atoms; R3 and R4 are individually selected from the group consisting of a beta , gamma -unsaturated alkyl group, a hydroxyalkyl group having 2 to 6 carbon atoms, an aralkyl group, an alkyl group having from 1 to 22 carbon atoms and mixtures thereof; X is selected from a group consisting of phosphorous and nitrogen. The reaction is carried out in a manner such that an organic cation-organic anion complex is intercalated with the smectite-type clay and the cation exchange sites of the smectite-type ...

ORGANOPHILIC CLAY-CATION COMPLEXES

DRILLING FLUIDS BASED ON A MIXTURE OF A SULPHONATED THERMOPLASTIC POLYMER AND AN AMINE-TREATED CLAY

ANIONICALLY MODIFIED ORGANOPHILIC CLAYS

An organophilic clay gellant is disclosed which comprises the reaction product of an organic cation compound, an organic anion, and a smectite-type clay having a cation exchange capacity of at least 75 milliequivalents per 100 grams of said clay. The organic cation compound has the formula: wherein R1 is selected from the group consisting of a .beta., .gamma. -unsaturated alkyl group and a hydroxyalkyl group having 2 to 6 carbon atoms and mixtures thereof; R2 is a long chain alkyl aroup having 12 to 60 carbon atoms; R3 and R4 are individually selected from the group consisting of a .beta., Y -unsaturated alkyl group, a hydroxyalkyl group having 2 to 6 carbon atoms, an aralkyl group, an alkyl group having from 1 to 22 carbon atoms and mixtures thereof; X is selected from a group consisting of phosphorous and nitrogen. The reaction is carried out in a manner such that an organic cation-organic anion complex is intercalated with the smectite-type clay and the cation exchange sites of ...

WATER-BASED DRILLING AND WELL-SERVICING FLUIDS WITH SWELLABLE, SYNTHETIC LAYER SILICATES

Synthetic swellable layer silicates corresponding to the following formula MgO in which M is Na+ and Li+ having an Na:Li ratio of at least 1; A is F-, OH- or ? O2- or a mixture thereof; a is 0.1 to 0.6; b is 0 to 0.3; c is 1.2 to 1.7; and n is 0 to 3.0. are used in water-based well-servicing fluids as a hightemperature-stable thixotrope substantially unaffected by alkaline earth metal ions.

ORGANOPHILIC CLAY HAVING ENHANCED DISPERSIBILITY

OIL BASED COMPOSITIONS FOR SEALING SUBTERRANEAN ZONES AND METHODS

The present invention provides oil based compositions and methods of using the compositions for sealing subterranean zones. The compositions are basically comprised of oil, a hydratable polymer, an organophillic clay and a water-swellable clay.

EMULSION INVERSE AMELIOREE POUR INHIBER LES HYDRATATIONS DANS LES GISEMENTS DE PETROLE

EMULSION INVERSE DU TYPE GASOIL DANS SAUMURE DE CHLORURE DE CALCIUM. OUTRE LES CONSTITUANTS PRINCIPAUX DE L'EMULSION QUI REPRESENTENT 25 A 90 EN POIDS DE CELLE-CI, ELLE EST ADDITIONNEE DE 2,0 A 5 EN POIDS D'UN AGENT DE STABILISATION A LA CHALEUR ET DE VISCOSITE, DE 0,5 A 2,0 EN POIDS D'UN AGENT EMULSIONNANT PRINCIPAL, JUSQU'A 72 EN POIDS D'UN AGENT EPAISSISSANT, JUSQU'A 0,5 EN POIDS D'UN ADDITIF DE PRISE EN GEL ET JUSQU'A 0,50 EN POIDS D'UN HYDROXYDE DE METAL ALCALINO-TERREUX. FLUIDE DE FORAGE POUR PUITS DE PETROLE.

КОМПОЗИЦИОННЫЙ МАТЕРИАЛ, СОДЕРЖАЩИЙ РЕАГЕНТ И/ИЛИ ИНДИКАТОР ДЛЯ ОБРАБОТКИ СКВАЖИНЫ, НАНЕСЕННЫЙ НА ТЕРМООБРАБОТАННУЮ ПОДЛОЖКУ С ЯДРОМ, ПОКРЫТЫМ ОКСИДОМ МЕТАЛЛА, И СПОСОБ ЕГО ИСПОЛЬЗОВАНИЯ

Изобретение относится к материалам, используемым при обработке скважин гидроразрывом. Композиционный материал для ввода реагента и/или индикатора для обработки скважины в пробуренный пласт подземной формации, характеризуется тем, что содержит термообработанную подложку, содержащую достаточно мощное ядро, предотвращающее закрытие трещиноватости на месте залегания в условиях продуктивного пласта, и оксид металла по меньшей мере частично нанесенный на ядро, причем площадь поверхности оксида металла термообработанной подложки составляет от 1 до 10 м2/г, диаметр термообработанной подложки составляет от 0,1 до 3 мм, и реагент и/или индикатор для обработки скважины, нанесенный на покрытие из оксида металла на термообработанной подложке. По другому варианту композиционный материал для ввода реагента и/или индикатора для обработки скважины в пробуренный пласт подземной формации характеризуется тем, что содержит термообработанную подложку, содержащую достаточно мощное ядро, предотвращающее закрытие ...

СПОСОБЫ ПОЛУЧЕНИЯ И ИСПОЛЬЗОВАНИЯ ПОКРЫТЫХ ЧАСТИЦ

FIELD: mining. ^ SUBSTANCE: processing methods of underground formation include the method for obtaining covered particles, which involves the steps at which particles are essentially covered with resin or the agent enhancing adhesiveness in order to obtain pre-covered particles; the latter are essentially covered with the parting agent which includes the material which is dissolved in the presence of service fluid so that covered particles are obtained; covered particles are suspended in service fluid in order to obtain suspension from pre-covered particles; suspension of pre-covered particles is introduced to underground formation. ^ EFFECT: preventing agglomeration of propping agent particles till they are suspended in processing fluid, increasing production and inspection of sand recovery and propping agent particles. ^ 54 cl, 1 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 399 645 (13) C2 (51) МПК C09K 8/80 (2006.01) E21B 43/267 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21), (22) Заявка: 2006135117/03, 21.02.2005 (24) Дата начала отсчета срока действия патента: 21.02.2005 (72) Автор(ы): НГУЙЕН Филип Д. (US), УИВЕР Джимми Д. (US) (43) Дата публикации заявки: 10.04.2008 C 2 2 3 9 9 6 4 5 R U C 2 (56) Список документов, цитированных в отчете о поиске: ЕР 05628796 А2, 29.09.1993. RU 2185501 C1, 20.07.2002. RU 2180397 C1, 10.03.2002. SU 256112 A, 05.02.1975. SU 574220 A, 30.09.1977. SU 696145 A, 08.11.1979. SU 1075948 A3, 23.02.1984. SU 676316 A, 30.07.1979. RU 2127118 C1, 10.03.1999. US 5837656 A, 17.11.1998. US 4042032 A, 16.08.1977. EP 1132569 А2, 12.09.2001. US 4785884 A, 22.11.1988. US (см. прод.) (85) Дата перевода заявки PCT на национальную фазу: 05.10.2006 (86) Заявка PCT: GB 2005/000634 (21.02.2005) (87) Публикация PCT: WO 2005/085595 (15.09.2005) Адрес для переписки: 129090, Москва, ул. Б.Спасская, 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры", пат.пов. Е.Е.Назиной ( ...

СПОСОБЫ ПОЛУЧЕНИЯ И ИСПОЛЬЗОВАНИЯ ПОКРЫТЫХ ЧАСТИЦ

... 1. Способ получения покрытых частиц, включающий этапы, на которыхчастицы, по существу, покрывают смолой или веществом для повышения клейкости для получения предварительно покрытых частиц; ипредварительно покрытые частицы, по существу, покрывают разделяющим веществом для получения покрытых частиц.2. Способ по п.1, где смола содержит двухкомпонентную смолу на основе эпоксида, смолу на основе фурана, смолу на основе фенола, высокотемпературную смолу на основе эпоксида, фенол/фенол формальдегид/фурфурил спиртовую смолу, и их комбинации.3. Способ по п.2, где двухкомпонентная смола на основе эпоксида содержит компонент способной затвердевать смолы и компонент отверждающего вещества.4. Способ по п.3, где двухкомпонентная смола на основе эпоксида дополнительно содержит гидролизуемый сложный эфир, кремнийорганическое связывающее вещество, поверхностно-активное вещество, или их комбинацию.5. Способ по п.2, где смола на основе фурана содержит фурфуриловый спирт, смесь фурфурилового спирта с альдегидом ...

MIT SÄURE BESCHICHTETER SAND FÜR KIESPACKUNG UND FILTERKUCHENENTFERNUNG

Coated products and use thereof in oil fields

Composition and process for oil extraction

WATER BASED WELLBORE FLUIDS

The invention relates to water based wellbore fluids used during a hydrocarbon recovery process, such as drilling, fracturing, gravel packing and wellbore workover. According to the present invention, said wellbore fluid comprises a fluid loss additive and a bridging material that are hydrophobic in nature, hydrophobically modified or oil wettable. The wellbore fluid generates an active filter cake that once formed, is impermeable to an aqueous phase, thus reducing fluid loss and ensuring reduced damage to the formation, yet simultaneously is permeable to the back flow of hydrocarbons during a hydrocarbon recovery process.

ACID-COATED SAND FOR GRAVEL PACK AND FILTER CAKE CLEAN-UP

A method of the preparation and utilization of polymerized alpha- hydroxycarboxylicacid-coated proppants for gravel pack and removal of filter cake that was deposited by reservoir drilling fluid. In a preferred example, polyglycolic-acid-coated sand is used to replace conventional gravel pack sand typically used for gravel packing. Under downhole conditions, the acidic by- product generated from the hydration of polyglycolic-acid-coated sand can break down acid-soluble and/or acid-breakable components embedded in the filter cake. This reaction enhances the filter cake removal and the flow of hydrocarbon from the producing formation. The polyglycolic-acid-coated sand may be produced by polymerizing a glycolic acid with a natural or synthetic proppant like 20-40 mesh commercial sand, at temperatures of about 210 ~F or higher.

REACTIVE CEMENT COMPOSITIONS FOR SEALING HYDROCARBON CONTAINING SUBTERRANEAN ZONES AND METHODS

The present invention provides improved reactive cement compositions for sealing hydrocarbon containing subterranean zones and methods of using the cement compositions. The sealing compositions are basically comprised of water, a hydraulic cement, an organophillic clay, a hydratable gelling agent and a water soluble alkaline source in effective amounts.

DRILLING FLUIDS BASED ON A MIXTURE OF A SULFONATED THERMOPLASTIC POLYMER AND AN AMINE-TREATED CLAY

The present invention relates to mixtures of sulfonated thermoplastic polymers and amine-treated clays which function as viscosification agents when added to oil-based drilling muds which are the fluids used to maintain pressure, cool drill bits and lift cuttings from the holes in the drilling operation for oil and gas wells. The sulfonated thermoplastic polymers have 5 to 100 meq. of sulfonate groups per 100 grams of the sulfonated thermoplastic polymer, wherein the sulfonated groups are neutralized with a metallic cation or an amine or ammonium counterion. A polar cosolvent can optionally be added to the mixture of oil drilling mud and sulfonated thermoplastic polymer, wherein the polar cosolvent increases the solubility of the sulfonated thermoplastic polymer in the oil drilling mud by decreasing the strong ionic interactions between the sulfonate groups of the sulfonated polymer.

ASBESTOS COMPOSITION HAVING ORGANO-SILANE COATING

PREACTIVATED ORGANOPHILIC CLAY GELLANT FOR LUBRICATING GREASES, LUBRICATING GREASE THICKENED WITH PREACTIVATED ORGANOPHILIC CLAY GELLANT, PROCESS FOR PREPARING PREACTIVATED ORGANOPHILIC CLAY GELLANTS AND PREACTIVATED ORGANOPHILIC CLAY GELLANTS THUS

PUMPABLE ORGANOPHILIC CLAY/POLYAMIDE COMPOSITIONS USEFUL AS RHEOLOGICAL ADDITIVES

A novel pourable organophilic clay polyamide composition useful as a rheological additive for organic fluid system comprising a) from about 5 to 15 weight percent of an organophilicly modified smectite-type clay, b) from about 25 to about 35 weight percent of one or more rheologically active polyamides and c) from about 40 to 60 weight percent of one or more organic solvents preferably selected from the group consisting of n-propanol, toluene and mineral spirits. The organophilic clay polyamide composition is used in non-aqueous fluid systems such as paints, inks, and coatings to provide improved rheological properties to the system.

Thixotropic Fluid for Well Insulation

COATED PRODUCTS AND USE THEREOF IN OIL FIELDS

An oil field production chemical, especially a scale inhibitor, is in the form of particles thereof carrying a coating e.g. of a dispersing agent. The coating may be polymeric such as an oligomeric polyacid polyester, a polymeric alkoxylated alcohol or a fatty acid polyamine condensate or it may also be a surfactant and may be used in the form of a suspension in an inert oil, such as diesel oil or kerosene which may be injected into a subterranean formation to inhibit the formation of deposits, e.g. scale in oil wells over a longer period than compounds free of the coating.

CLAYS ORGANOPHILES MODIFIEES ANIONIQUEMENT AND PROCESS FOR THEIR PREPARATION

Methods of sealing subterranean zones

The present invention provides improved methods of sealing a subterranean zone to remedy the uncontrolled flow of fluids into and out of the zone. The methods basically comprise preparing a sealing composition and placing the composition into the zone to be sealed. The placement of the composition is controlled in a manner whereby portions of the sealing composition are continuously converted to sealing masses which are successively diverted into permeable portions of the zone until all of the permeable portions are sealed.

Additive for increasing the density of an oil-based fluid and fluid comprising such additive

A wellbore fluid having an oleaginous phase and an additive for increasing the density of the wellbore fluid. The additive comprises solid colloidal particles coated with a dispersant during the comminution process of forming the particles. Exemplary starting materials for the colloidal particles include commonly known weighting agents as well as mixture and combinations thereof. The dispersant in one embodiment, is selected from carboxylic acids of molecular weight of at least 150 Daltons. Alternatively, the dispersant coating may be made of compounds including oleic acid, polybasic fatty acids, alkylbenzene sulfonic acids, alkane sulfonic acids, linear alpha-olefin sulfonic acid or the alkaline earth metal salts of any of the above acids, and phospholipids as well as mixtures and combinations of these compounds. In another embodiment the dispersant is a polyacrylate ester having an average molecular weight from about 10,000 Daltons to about 200,000 Daltons.

Methods of sealing subterranean zones

The present invention provides improved methods of sealing a subterranean zone to remedy the uncontrolled flow of fluids into and out of the zone. The methods basically comprise preparing a sealing composition and placing the composition into the zone to be sealed. The placement of the composition is controlled in a manner whereby portions of the sealing composition are continuously converted to sealing masses which are successively diverted into permeable portions of the zone until all of the permeable portions are sealed.

Particles comprising a fluorinated siloxane and methods of making and using the same

Particles, including proppants, comprising a fluorinated siloxane. The particles are useful as proppants in fractured a subterranean geological formation comprising hydrocarbons.

Modified organophilic clay complexes, their preparation and non-aqueous systems containing them

An organophilic clay gellant useful for gelling organic liquids is disclosed which comprises the reaction product of (a) a smectite-type clay having a cation exchange capacity of at least 75 milliequivalents per 100 grams of said clay; (b) a primary anion selected from the group consisting of anions derived from organic sulfonic acids, alkylsulfates and mixtures thereof containing at least one lineal or branched alkyl group having greater than 9 carbon atoms, aromatic sulfonic acids and mixtures thereof; (c) a secondary anion different from said primary anion and selected from the group consisting of anions derived from organic acids having a pKa of less than about 11.0 and mixtures thereof; and (d) an organic cation is an amount sufficient to satisfy the cation in exchange capacity of said clay and the cationic activity of the primary and secondary anions wherein the resulting organic cation-organic anion complexes are intercalated with the smectite-type clay and wherein the combination of said primary and secondary anion synergistically increases the ease of dispersion of said organophilic clay gellant in an organic liquid.

Patent JPH0357948B2

Organophilic clay complexes

Complexes modifies d'argiles organophiles

Gelificante de argila organofila,processo para sua preparacao e sistema fluido nao aquoso

Modified organophilic clay complexes

ABSTRACT OF THE DISCLOSURE An organophilic clay gellant, which comprises: the reaction product of an organic cation, a primary and secondary organic anion and a smectite-type clay having a cation exchange capacity of at least 75 milliequivalents per 100 grams of said clay such that multiple organic cation -organic anion complexes are intercalated with the smectite-type clay and the cation exchange sites of the smectite-type clay are substituted with the organic cation and, wherein the amount of organic cation present is at least (100+n) milliequivalents where n is the amount of primary anion expressed in milliequivalents per 100 grams of clay, 100 active clay basis.

Patent DE3208052C2

Modificerede, organofile ler-komplekser

Organofilt ler-gelbildningsmedel och foerfarande foer framstaellning daerav.

ORGANOPHILIC CLAY GEL

[UNK]

Modified organophilic clay complexes

An organophilic clay gellant useful for gelling organic liquids is disclosed which comprises the reaction product of (a) a smectite-type clay having a cation exchange capacity of at least 75 milliequivalents per 100 grams of said clay; (b) a primary anion selected from the group consisting of anions derived from organic sulfonic acids, alkylsulfates and mixtures thereof containing at least one lineal or branched alkyl group having greater than 9 carbon atoms, aromatic sulfonic acids and mixtures thereof; (c) a secondary anion different from said primary anion and selected from the group consisting of anions derived from organic acids having a pKa of less than about 11.0 and mixtures thereof; and (d) an organic cation is an amount sufficient to satisfy the cation in exchange capacity of said clay and the cationic activity of the primary and secondary anions wherein the resulting organic cation-organic anion complexes are intercalated with the smectite-type clay and wherein the combination of said primary and secondary anion synergistically increases the ease of dispersion of said organophilic clay gellant in an organic liquid.

Complessi di argille organofile modificati

Complexes modifies d'argiles organophiles

Mejoras a proceso para preparar una composicion de arcilla organofilica

La presente invención se refiere a mejoras a proceso para preparar una composición de arcilla organofílica, que comprende: a) preparar una suspensión de arcilla del tipo esmectita en agua a un peso de 1 a 80 por ciento de dicha arcilla; b) calentar la suspensión hasta una temperatura de entre 20 y 100 grados C; c) agregar (i) de 5 a 200 mili-equivalentes totales de una mezcla de anión orgánico por 100 gramos de arcilla sobre una base de arcilla 100 por ciento activa, d) continuar la reacción por un tiempo suficiente para formar un producto de reacción que comprenda los complejos de catión orgánico-anión orgánico los cuales son intercalados con la arcilla del tipo esmectita y los sitios de intercambio de catión de la arcilla del tipo esmectita son substituídos con el catión orgánico; y e) recuperar el producto de reacción, en donde la mezcla de los aniones primario y secundario incrementa la facilidad de dispersión de la composición de arcilla orgánica en un líquido orgánico hasta un grado superior a una cantidad equivalente de ya sea el anión primario o secundario solo.

Organofiel kleigeleringsmiddel, werkwijze ter bereiding daarvan en niet water bevattend vloeibaar systeem dat dit bevat.

Organofilt leireglmiddel, fremgangsmaate for fremstilling derav og anvendelse derav.

Organofilt lergelningsmedel, forfarande for framstellning derav samt icke vattenhaltigt fluidsystem innehallande detsamma

Modified organophilic clay complexes

Preactivated organophilic clay gellant lubricating grease thickened with preactivated organophilic clay gellant and process for preparing preactivated organophilic clay gellants

A preactivated organophilic clay gellant that may be used to thicken organic compositions, especially, lubricating greases without the presence of a polar activator. The preactivated organophilic clay gellant may be prepared using certain process parameters namely shearing of the smectite-type clay prior to reaction with the organic cation, dilute reaction conditions and gentle drying of the organophilic clay or the preactivated organophilic clay gellant.

Organophilic clay additives and oil well drilling fluids with less temperature dependent rheological properties containing said additives

Conventional organophilic clays, when used as rheological additives in oil based invert muds, display marked viscosity loses in the mud when these muds are heated much above 350° F., whereas muds prepared according to the present invention are dramatically more viscosity stable at temperatures through 500° F. The present invention relates to the discovery of oil based invert emulsion drilling fluids that provides more stable drilling fluid viscosity and anti-settling performance over varying temperatures when compared to conventional fluids containing organoclays. As a result, the inventive fluids of this invention are ideal candidates for high temperature applications. This invention in another aspect of this invention is a process for improving the rheological properties of oil well drilling fluids particularly useful for oil-based invert emulsion types of drilling fluids. The new process uses as a rheological viscosifer for such fluids as a specific organoclay which when added to a drilling fluid at from about 0.5 and 5% by weight creates an inventive drilling fluid composition less sensitive to the very hot temperatures found in the drilling hole, and in the long stem of drilling pipe.

Organophilic clay having enhanced dispersibility

An organophilic clay gellant having enhanced dispersibility in organic systems is prepared from the reaction product of a smectite-type clay having a cation exchange capacity of at least 0.75 milliequivalents per gram and from 1.00 to less than 1.20 milliequivalents per gram of clay of a methyl benzyl dialkyl ammonium compound, wherein the compound contains 20 to 35% alkyl groups having 16 carbon atoms and 60 to 75% alkyl groups having 18 carbon atoms.

Mejoras a composicion de arcilla malcolm finlayson

Organofiel kleigeleringsmiddel, werkwijze ter bereiding daarvan en niet water bevattend vloeibaar systeem dat dit bevat.

MODIFIED ORGANOFILE CLAY COMPLEXES

Organofilt ler-gelbildningsmedel och foerfarande foer framstaellning daerav.

MODIFIED ORGANOPHILE TONE COMPLEXES

Modifierade organofila lerkomplex

MODIFIED ORGANOPHILE CLAY COMPLEXES.

Organofilt leireglmiddel, fremgangsmaate for fremstilling derav og anvendelse derav.

Organofilt leiregelmiddel, fremgangsmaate ved fremstilling derav og anvendelse derav

Modifierade organo-lerkomplex

親有機性クレ−よりなるゲル形成剤

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Organophilic clay gellant

Additive for increasing the density of an oil-based fluid and fluid comprising such additive

A wellbore fluid having an oleaginous phase and an additive for increasing the density of the wellbore fluid. The additive comprises solid colloidal particles coated with a dispersant coated onto the colloidal particle during the comminution process of forming the particles. Exemplary starting materials for the colloidal particles include commonly known weighting agents including barite, calcium carbonate, dolomite, ilmenite, hematite or other iron ores, olivine, siderite, and strontium sulfate as well as mixture and combinations of these and other similar weighting materials. The dispersant in one illustrative embodiment, is selected from carboxylic acids of molecular weight of at least 150 Daltons. Alternatively, the dispersant coating may be made of compounds including oleic acid, polybasic fatty acids, alkylbenzene sulfonic acids, alkane sulfonic acids, linear alpha-olefin sulfonic acid or the alkaline earth metal salts of any of the above acids, and phospholipids as well as mixtures and combinations of these compounds. In another illustrative embodiment the dispersant is a polyacrylate ester. The illustrative polymeric dispersant should have an average molecular weight from about 10,000 Daltons to about 200,000 Daltons.

Methods using particulates coated with treatment chemical partitioning agents

Methods of treating a portion of a subterranean formation comprising: providing partitioned, coated particulates that comprise particulates, an adhesive substance, and a partitioning agent, and wherein the partitioning agent comprises a subterranean treatment chemical; substantially slurrying the partitioned, coated particulates in a treatment fluid to create a particulate slurry; and, placing the particulate slurry into the portion of the subterranean formation.

Methods of using partitioned, coated particulates

Methods of treating a portion of a subterranean formation comprising: providing partitioned, coated particulates that comprise particulates, an adhesive substance, and a partitioning agent, and wherein the adhesive substance comprises an aqueous tackifying agent or a silyl modified polyamide; substantially slurrying the partitioned, coated particulates in a treatment fluid to create a particulate slurry; and, placing the particulate slurry into the portion of the subterranean formation.

Methods of preparing and using coated particulates

The present invention involves methods of preparing coated particulates and using such coated particulates in subterranean applications such as production enhancement and sand control. One embodiment of the present invention provides a method of preparing coated particulates comprising the steps of coating particulates with a resin or a tackifying agent to create pre-coated particulates; and, covering the pre-coated particulates with a partitioning agent to create coated particulates. Another embodiment of the present invention provides a method of treating a subterranean formation comprising the steps of providing coated particulates made by a method comprising the steps of substantially coating particulates with a resin or a tackifying agent to create pre-coated particulates; and, substantially covering the pre-coated particulates with a partitioning agent to create coated particulates; substantially slurrying the coated particulates in a servicing fluid to create a coated particulate slurry; and, placing the coated particulate slurry into the subterranean formation.

Oil based compositions for sealing subterranean zones and methods

The present invention provides oil based compositions and methods of using the compositions for sealing subterranean zones. The compositions are basically comprised of oil, a hydratable polymer, an organophillic clay and a water-swellable clay.

Oil based compositions and method for temporarily sealing subterranean zones

The present invention provides oil based compositions and methods of using the compositions for temporarily sealing subterranean zones. The compositions are basically comprised of oil, a hydratable polymer, an organophilic clay, a water-swellable clay, and an acid soluble material such as calcium carbonate. These compositions will form a viscous gel when contacted with water. The gelled mass may then be dissolved with an acidic fluid, such as 15% hydrochloric acid.

Oil based compositions and method for temporarily sealing subterranean zones

The present invention provides oil based compositions and methods of using the compositions for temporarily sealing subterranean zones. The compositions are basically comprised of oil, a hydratable polymer, an organophilic clay, a water-swellable clay, and an acid soluble material such as calcium carbonate. These compositions will form a viscous gel when contacted with water. The gelled mass may then be dissolved with an acidic fluid, such as 15% hydrochloric acid.

Drilling fluid containing microspheres and use thereof

The present invention provides a drilling fluid composition and a method of drilling comprising a drilling fluid, which may be oil- or water-based, and a composite microsphere component. The invention drilling fluid composition advantageously reduces the density of a conventional fluid, reduces costs associated with pumping and overcomes problems associated with conventional gas-injection processes. The invention uses conventional drilling and pumping equipment, requires no sea-floor based pumps and may be easily pressure-controlled to maintain the pressure of the fluid.

Fast drilling invert emulsion drilling fluids

Disclosed are invert oil emulsion drilling fluids containing a non-toxic, biodegradable oil having a viscosity at 25° C. of less than 1.5 centipoise, a flash point of at least 60° C., an aniline point of at least 80° C., and a content of aromatic hydrocarbons of less than 1% by volume. These drilling fluids have a low viscosity at the high shear rates imparted to a drilling fluid at the bit during drilling. This low bit viscosity provides for faster penetration rates. Such drilling fluids containing a temperature stabilizing additive exhibit superior thermal stability.

Application of drilling fluids

Oil base drilling fluid

Sealing subterranean zones

The present invention provides improved compositions and methods of using the compositions for sealing subterranean zones. The compositions are basically comprised of water, an aqueous rubber latex, an organophillic clay, sodium carbonate, an epoxy resin and a hardening agent for said epoxy resin.

Sealing subterranean zones

The present invention provides improved compositions and methods of using the compositions for sealing subterranean zones. The compositions are basically comprised of water, an aqueous rubber latex, an organophillic clay, sodium carbonate, an epoxy resin and a hardening agent for said epoxy resin.

Reactive cement compositions for sealing hydrocarbon containing subterranean zones and methods

The present invention provides improved reactive cement compositions for sealing hydrocarbon containing subterranean zones and methods of using the cement compositions. The sealing compositions are basically comprised of water, a hydraulic cement, an organophillic clay, a hydratable gelling agent and a water soluble alkaline source in effective amounts.

Method of sealing subterranean zone

Process for sealing underground deposits

Methods of sealing subterranean zones

The present invention provides improved methods of sealing a subterranean zone to remedy the uncontrolled flow of fluids into and out of the zone. The methods basically comprise preparing a sealing composition and placing the composition into the zone to be sealed. The placement of the composition is controlled in a manner whereby portions of the sealing composition are continuously converted to sealing masses which are successively diverted into permeable portions of the zone until all of the permeable portions are sealed.

Procedure for sealing underground zones

Oil based compositions and method for temporarily sealing subterranean zones

The present invention provides oil based compositions and methods of using the compositions for temporarily sealing subterranean zones. The compositions are basically comprised of oil, a hydratable polymer, an organophilic clay, a water-swellable clay, and an acid soluble material such as calcium carbonate. These compositions will form a viscous gel when contacted with water. The gelled mass may then be dissolved with an acidic fluid, such as 15% hydrochloric acid.

Reactive cement compositions for sealing hydrocarbon containing subterranean zones and methods

The present invention provides improved reactive cement compositions for sealing hydrocarbon containing subterranean zones and methods of using the cement compositions. The sealing compositions are basically comprised of water, a hydraulic cement, an organophillic clay, a hydratable gelling agent and a water soluble alkaline source in effective amounts.

Well servicing fluid additive

Disclosed is a fluid, pourable well servicing fluid additive comprising a water-soluble polymer, an alkaline earth metal base, and a fibrous material suspended in an oleaginous liquid with a gellant and, optionally, a dispersant therefor. The additive is useful in preparing spud muds, lost circulation pills, and spacer fluids during well servicing operations.

Low water loss aqueous drilling fluid

Procedure for sealing underground zones

Method of sealing subterranean zone

A subterranean zone is sealed to reduce the uncontrolled flow of fluids into and out of the zone, by introducing a sealing composition into the well bore fluids so that it rapidly converts to a high viscosity sealing mass therein and is deposited in said zone to seal it.

FremgangsmÕte for tetning av underjordiske soner

Process for sealing underground deposits

Application of drilling fluids

Cement compositions for sealing subterranean zones

Reactive cement compositions for sealing hydrocarbon-containing subterranean zones comprise water, a hydraulic cement, an organophilic clay, a hydratable gelling agent and a water soluble alkaline source.

Methods of preparing and using coated particulates

The present invention involves methods of preparing coated particulates and using such coated particulates in subterranean applications such as production enhancement and sand control. One embodiment of the present invention provides a method of preparing coated particulates comprising the steps of coating particulates with a resin or a tackifying agent to create pre-coated particulates; and, covering the pre-coated particulates with a partitioning agent to create coated particulates. Another embodiment of the present invention provides a method of treating a subterranean formation comprising the steps of providing coated particulates made by a method comprising the steps of substantially coating particulates with a resin or a tackifying agent to create pre-coated particulates; and, substantially covering the pre-coated particulates with a partitioning agent to create coated particulates; substantially slurrying the coated particulates in a servicing fluid to create a coated particulate slurry; and, placing the coated particulate slurry into the subterranean formation.

Methods of preparing and using coated particulates

The present invention involves methods of preparing coated particulates and using such coated particulates in subterranean applications such as production enhancement and sand control. One embodiment of the present invention provides a method of preparing coated particulates comprising the steps of coating particulates with a resin or a tackifying agent to create pre-coated particulates; and, covering the pre-coated particulates with a partitioning agent to create coated particulates. Another embodiment of the present invention provides a method of treating a subterranean formation comprising the steps of providing coated particulates made by a method comprising the steps of substantially coating particulates with a resin or a tackifying agent to create pre-coated particulates; and, substantially covering the pre-coated particulates with a partitioning agent to create coated particulates; substantially slurrying the coated particulates in a servicing fluid to create a coated particulate slurry; and, placing the coated particulate slurry into the subterranean formation.

Methods using particulates coated with treatment chemical partitioning agents

Methods of treating a portion of a subterranean formation comprising: providing partitioned, coated particulates that comprise particulates, an adhesive substance, and a partitioning agent, and wherein the partitioning agent comprises a subterranean treatment chemical; substantially slurrying the partitioned, coated particulates in a treatment fluid to create a particulate slurry; and, placing the particulate slurry into the portion of the subterranean formation.

Water-based drilling and well-servicing fluids with swellable, synthetic layer silicates

Synthetic swellable layer silicates corresponding to the following formula MgO.aMA.bAl.sub.2 O.sub.3.cSiO.sub.2.nH.sub.2 O (I) in which M is Na + and Li + having an Na:Li ratio of at least 1; A is F - , OH - or 1/2O 2- or a mixture thereof; a is 0.1 to 0.6; b is 0 to 0.3; c is 1.2 to 1.7; and n is 0 to 3.0. are used in water-based well-servicing fluids as a high-temperature-stable thixotrope substantially unaffected by alkaline earth metal ions.

Additive for increasing the density of an oil-based fluid and fluid comprising such additive

A wellbore fluid having an oleaginous phase and an additive for increasing the density of the wellbore fluid. The additive comprises solid colloidal particles coated with a dispersant coated onto the colloidal particle during the comminution process of forming the particles. Exemplary starting materials for the colloidal particles include commonly known weighting agents including barite, calcium carbonate, dolomite, ilmenite, hematite or other iron ores, olivine, siderite, and strontium sulfate as well as mixture and combinations of these and other similar weighting materials. The dispersant in one illustrative embodiment, is selected from carboxylic acids of molecular weight of at least 150 Daltons. Alternatively, the dispersant coating may be made of compounds including oleic acid, polybasic fatty acids, alkylbenzene sulfonic acids, alkane sulfonic acids, linear alpha-olefin sulfonic acid or the alkaline earth metal salts of any of the above acids, and phospholipids as well as mixtures and combinations of these compounds. In another illustrative embodiment the dispersant is a polyacrylate ester. The illustrative polymeric dispersant should have an average molecular weight from about 10,000 Daltons to about 200,000 Daltons.

Additive for increasing the density of an oil-based fluid and fluid comprising such additive

A wellbore fluid having an oleaginous phase and an additive for increasing the density of the wellbore fluid. The additive comprises solid colloidal particles coated with a dispersant coated onto the colloidal particle during the comminution process of forming the particles. Exemplary starting materials for the colloidal particles include commonly known weighting agents including barite, calcium carbonate, dolomite, ilmenite, hematite or other iron ores, olivine, siderite, and strontium sulfate as well as mixture and combinations of these and other similar weighting materials. The dispersant in one illustrative embodiment, is selected from carboxylic acids of molecular weight of at least 150 Daltons. Alternatively, the dispersant coating may be made of compounds including oleic acid, polybasic fatty acids, alkylbenzene sulfonic acids, alkane sulfonic acids, linear alpha-olefin sulfonic acid or the alkaline earth metal salts of any of the above acids, and phospholipids as well as mixtures and combinations of these compounds. In another illustrative embodiment the dispersant is a polyacrylate ester. The illustrative polymeric dispersant should have an average molecular weight from about 10,000 Daltons to about 200,000 Daltons.

Additive for increasing the density of an oil-based fluid and fluid comprising such additive

A method of formulating a wellbore fluid that includes grinding a solid particulate material and a polymeric dispersing agent to provide a resulting polymer coated solid material, and suspending the resulting polymer coated solid material in the wellbore fluid. At least a portion of the resulting polymer coated solid material has a particle diameter less than 2.0 microns, wherein the polymeric dispersing agent has a molecular weight greater than 10,000. Exemplary starting materials for the solid material include weighting agents including barite, calcium carbonate, dolomite, ilmenite, hematite or other iron ores, olivine, siderite and strontium sulfate as well as mixture and combinations of these and other similar weighting materials. The dispersant in one illustrative embodiment is a polymeric acrylate ester made from the monomers of stearyl methacrylate, butylacrylate, and acrylic acid.

Additive for increasing the density of an oil-based fluid and fluid comprising such additive

A wellbore fluid having an oleaginous phase and an additive for increasing the density of the wellbore fluid. The additive comprises solid colloidal particles coated with a dispersant coated onto the colloidal particle during the comminution process of forming the particles. Exemplary starting materials for the colloidal particles include commonly known weighting agents including barite, calcium carbonate, dolomite, ilmenite, hematite or other iron ores, olivine, siderite, and strontium sulfate as well as mixture and combinations of these and other similar weighting materials. The dispersant in one illustrative embodiment, is selected from carboxylic acids of molecular weight of at least 150 Daltons. Alternatively, the dispersant coating may be made of compounds including oleic acid, polybasic fatty acids, alkylbenzene sulfonic acids, alkane sulfonic acids, linear alpha-olefin sulfonic acid or the alkaline earth metal salts of any of the above acids, and phospholipids as well as mixtures and combinations of these compounds. In another illustrative embodiment the dispersant is a polyacrylate ester. The illustrative polymeric dispersant should have an average molecular weight from about 10,000 Daltons to about 200,000 Daltons.

Coated products and use thereof in oil fields

An oil field production chemical, especially a scale inhibitor, is in the form of particles thereof carrying a coating e.g. of a dispersing agent. The coating may be polymeric such as an oligomeric polyacid polyester, a polymeric alkoxylated alcohol or a fatty acid polyamine condensate or it may also be a surfactant and may be used in the form of a suspension in an inert oil, such as diesel oil or kerosene which may be injected into a subterranean formation to inhibit the formation of deposits, e.g. scale in oil wells over a longer period than compounds free of the coating.

Coated products and use thereof in oil fields

An oil field production chemical, especially a scale inhibitor, is in the form of particles thereof carrying a coating e.g. of a dispersing agent. The coating may be polymeric such as an oligomeric polyacid polyester, a polymeric alkoxylated alcohol or a fatty acid polyamine condensate or it may also be a surfactant and may be used in the form of a suspension in an inert oil, such as diesel oil or kerosene which may be injected into a subterranean formation to inhibit the formation of deposits, e.g. scale in oil wells over a longer period than compounds free of the coating.

Additive for increasing the density of an oil-based fluid and fluid comprising such additive

A method of formulating a wellbore fluid that includes grinding a solid particulate material and a polymeric dispersing agent to provide a resulting polymer coated solid material, and suspending the resulting polymer coated solid material in the wellbore fluid. At least a portion of the resulting polymer coated solid material has a particle diameter less than 2.0 microns, wherein the polymeric dispersing agent has a molecular weight greater than 10,000. Exemplary starting materials for the solid material include weighting agents including barite, calcium carbonate, dolomite, ilmenite, hematite or other iron ores, olivine, siderite and strontium sulfate as well as mixture and combinations of these and other similar weighting materials. The dispersant in one illustrative embodiment is a polymeric acrylate ester made from the monomers of stearyl methacrylate, butyacrylate, and acrylic acid.

Acid coated sand for gravel pack and filter cake clean-up

A method of the preparation and utilization of polymerized alpha-hydroxycarboxylic-acid-coated proppants for gravel pack and removal of filter cake that was deposited by reservoir drilling fluid. In a preferred example, polyglycolic-acid-coated sand is used to replace conventional gravel pack sand typically used for gravel packing. Under downhole conditions, the acidic by-product generated from the hydration of polyglycolic-acid-coated sand can break down acid-soluble and/or acid-breakable components embedded in the filter cake. This reaction enhances the filter cake removal and the flow of hydrocarbon from the producing formation. The polyglycolic-acid-coated sand may be produced by polymerizing a glycolic acid with a natural or synthetic proppant like 20-40 mesh commercial sand, at temperatures of about 210° F. or higher.

Organophilic polyphenolic acid adducts

Organophilic polyphenolic materials which are effective fluid loss control additives for oil base well-working fluids are prepared from a polyphenolic material and one or more phosphatides. Preferred phosphatides are phosphoglycerides obtained from vegetable oils, most preferably commercial lecithin. Preferred polyphenolic materials comprise one or more of: humic acid; lignosulfonic acid; lignins; phenolic condensates; tannins; the oxidized, sulfonated, or sulfomethylated derivatives of these polyphenolic materials; and the water soluble or colloidally dispersible salts of these polyphenolic materials or these derivatives thereof.

Use of surface-modified nanoparticles for oil recovery

The present invention provides the use of surface-modified nanoparticles in fluids used to recover hydrocarbon from underground formations. The use of surface-modified nanoparticles in such fluids provides foams that are stable under pressure yet have a shorter foam lifetime than typical surfactant-stabilized foams after the pressure is released or lowered.

Anionically modified organophilic clays and their preparation

An organophilic clay gellant is disclosed which comprises the reaction product of an organic cation compound, an organic anion, and a smectite-type clay having a cation exchange capacity of at least 75 milliequivalents per 100 grams of said clay. The organic cation compound has the formula: ##STR1## wherein R 1 is selected from the group consisting of a β, γ-unsaturated alkyl group and a hydroxyalkyl group having 2 to 6 carbon atoms and mixtures thereof; R 2 is a long chain alkyl group having 12 to 60 carbon atoms; R 3 and R 4 are individually selected from the group consisting of a β, γ-unsaturated alkyl group, a hydroxyalkyl group having 2 to 6 carbon atoms, an aralkyl group, an alkyl group having from 1 to 22 carbon atoms and mixtures thereof; X is selected from a group consisting of phosphorous and nitrogen. The reaction is carried out in a manner such that an organic cation-organic anion complex is intercalated with the smectite-type clay and the cation exchange sites of the smectite-type clay are substituted with the organic cation.

Method and composition

Methods of preparing and using coated particulates

The present invention involves methods of preparing coated particulates and using such coated particulates in subterranean applications such as production enhancement and sand control. One embodiment of the present invention provides a method of preparing coated particulates comprising the steps of coating particulates with a resin or a tackifying agent to create pre-coated particulates; and, covering the pre-coated particulates with a partitioning agent to create coated particulates. Another embodiment of the present invention provides a method of treating a subterranean formation comprising the steps of providing coated particulates made by a method comprising the steps of substantially coating particulates with a resin or a tackifying agent to create pre-coated particulates; and, substantially covering the pre-coated particulates with a partitioning agent to create coated particulates; substantially slurrying the coated particulates in a servicing fluid to create a coated particulate slurry; and, placing the coated particulate slurry into the subterranean formation.

Drilling fluid containing microspheres and use thereof

本发明提供一种钻井流体组合物及钻井方法，其包括可为油基或水基的钻井流体及复合微球组分。有利的是，本发明的钻井流体组合物可降低常规流体的密度、降低抽吸成本并克服了常规气体注入方法的问题。本发明使用常规钻进和抽吸设备，不需要海底基泵，并可容易地控制压力以维持钻井流体的压力。

Mixed metal layered hydroxideclay adducts as thickeners for water and other hydrophylic fluids

내용 없음. No content.

Emulsifier free oil-based wellbore fluid

A wellbore fluid that includes an oleaginous base fluid; and a silanated weighting agent is disclosed. In particular, the silanated weighting agents may be produced by reaction between an alkyl alkoxy silane and a weighting agent Methods of formulating such fluids and methods of drilling using such fluids are also disclosed.

Use of surface-modified nanoparticles for oil recovery

The present invention provides the use of surface-modified nanoparticles in fluids used to recover hydrocarbon from underground formations. The use of surface-modified nanoparticles in such fluids provides foams that are stable under pressure yet have a shorter foam lifetime than typical surfactant-stabilized foams after the pressure is released or lowered.

Use of surface-modified nanoparticles for oil recovery

The present invention provides the use of surface-modified nanoparticles in fluids used to recover hydrocarbon from underground formations. The use of surface-modified nanoparticles in such fluids provides foams that are stable under pressure yet have a shorter foam lifetime than typical surfactant-stabilized foams after the pressure is released or lowered.

PREACTIVE ORGANOPHILIC CLAY GEL FOR LUBRICATING FATS, LUBRICATING GREASE THICKENED BY ORGANOPHILIC PREACTIVE GELLIFIER AND PROCESS FOR PREPARING PREACTIVE CLAY GELANTS

L'INVENTION CONCERNE UN GELIFIANT A BASE D'ARGILE ORGANOPHILE PREACTIVE POUVANT ETRE UTILISE POUR EPAISSIR DES COMPOSITIONS ORGANIQUES, EN PARTICULIER DES GRAISSES LUBRIFIANTES SANS LA PRESENCE D'UN ACTIVATEUR POLAIRE. LE GELIFIANT A BASE D'ARGILE ORGANOPHILE PREACTIVE PEUT ETRE PREPARE AU MOYEN DE CERTAINS PARAMETRES OPERATOIRES, A SAVOIR LE CISAILLEMENT DE L'ARGILE DE TYPE SMECTITE AVANT LA REACTION AVEC LE CATION ORGANIQUE, DES CONDITIONS REACTIONNELLES DILUEES ET UN SECHAGE MODERE DE L'ARGILE ORGANOPHILE OU DU GELIFIANT A BASE D'ARGILE ORGANOPHILE PREACTIVE.

Mixed metal layered hydroxide-clay adducts as thickeners for water and other hydrophylic fluids

ABSTRACT Novel compositions useful as fluid gelling agents, especially for use in subterranean applications such as drilling fluids, are prepared by reacting an aqueous dispersion of a clay, such as bentonite, with an aqueous gel of a monodispersed mixed metal layered hydroxide. 34,297-F

ANIONICALLY MODIFIED ORGANOPHILIC CLAYS AND PROCESS FOR THEIR PREPARATION

GELIFIANT DU TYPE ARGILE ORGANOPHILE. IL EST CONSTITUE PAR LE PRODUIT DE LA REACTION DE: A.UN SEL AYANT UN CATION ORGANIQUE DONT LE CATION REPOND A LA FORMULE: (CF DESSIN DANS BOPI) DANS LAQUELLE R EST UN GROUPE ALKYLE INSATURE EN B, G, UN GROUPE HYDROXYALKYLE CONTENANT 2 A 6 ATOMES DE CARBONE OU UN MELANGE DE CEUX-CI, R UN GROUPE ALKYLE A LONGUE CHAINE CONTENANT 12 A 60 ATOMES DE CARBONE, R ET R REPRESENTENT, INDIVIDUELLEMENT, UN GROUPE ALKYLE INSATURE EN B, G, UN GROUPE HYDROXYALKYLE CONTENANT 2 A 6 ATOMES DE CARBONE, UN GROUPE ARALKYLE, UN GROUPE ALKYLE AYANT DE 1 A 22 ATOMES DE CARBONE, OU DES MELANGES DE CEUX-CI, ET X REPRESENTE LE PHOSPHORE OU L'AZOTE; B.UN ANION ORGANIQUE; ET C.UNE ARGILE DU TYPE SMECTITE AYANT UNE CAPACITE D'ECHANGE DE CATIONS D'AU MOINS 75 MILLIEQUIVALENTS PAR 100G DE L'ARGILE, DE TELLE SORTE QU'UN COMPLEXE DE CATION ORGANIQUE ET D'ANION ORGANIQUE EST INTERCALE AVEC L'ARGILE DU TYPE SMECTITE ET QUE LES SITES D'ECHANGE DE CATIONS ET DE L'ARGILE DU TYPE SMECTITE SONT SUBSTITUES PAR LE CATION ORGANIQUE. APPLICATION COMME AGENT RHEOLOGIQUE AUTOACTIVANT.

CLAY-CATION COMPLEXES AND METHOD FOR INCREASING THE VISCOSITY OF A LIQUID ORGANIC SYSTEM