| Patents for C09K 8 - Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations (31,745) |
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| 03/24/1992 | CA1297784C Method of restoring permeability around wellbores |
| 03/21/1992 | CA2049193A1 Method for controlling fines production in unconsolidated and loosely consolidated formations |
| 03/18/1992 | WO1992005123A1 Process for producing bentonite clays exhibiting enhanced solution viscosity properties |
| 03/18/1992 | EP0475642A1 Method of suppression of Hydrogen sulfide with heterocyclic-amine aldehyde reaction products |
| 03/18/1992 | EP0475641A1 Heterocyclic-amine aldehyde reaction products useful for the suppression of hydrogen sulfide |
| 03/18/1992 | EP0475568A1 Well cement fluid loss additive and method |
| 03/18/1992 | EP0475503A1 Product and process for acid diversion in the treatment of subterranean formations |
| 03/18/1992 | EP0475325A1 Gelatin of acrylamide-containing polymers with aminobenzoic acid compounds and water dispersible aldehydes |
| 03/18/1992 | CA2091780A1 Process for producing bentonite clays exhibiting enhanced solution viscosity properties |
| 03/17/1992 | US5096883 Emulsifiers, viscosifiers, weighting agents, oil-wetting agents, densifiers and/or fluid-loss preventing agents |
| 03/17/1992 | US5096618 Process and composition for inhibiting high-temperature iron and steel corrosion |
| 03/17/1992 | US5096603 Thermally stable hydrophobically associating rheological control additives for water-based drilling fluids |
| 03/17/1992 | US5095992 Process for installing casing in a borehole |
| 03/17/1992 | US5095989 Microemulsion method for improving the injectivity of a well |
| 03/17/1992 | US5095987 Method of forming and using high density particulate slurries for well completion |
| 03/17/1992 | US5095986 Enhanced oil recovery using oil soluble sulfonates from lignin and benzyl alcohol |
| 03/17/1992 | US5095985 Enhance oil recovery using oil soluble sulfonate surfactants from lignin and alkylphenol |
| 03/17/1992 | US5095984 Transporting mobility control agents to high permeability zones |
| 03/17/1992 | CA1297401C Delayed in situ crosslinking of acrylamide polymers for oil recovery applications in high-temperature formations |
| 03/17/1992 | CA1297350C Method for inhibiting sulfide stress corrosion cracking and hydrogen induced stepwise cracking |
| 03/15/1992 | CA2051257A1 Crosslinking water-soluble polymers with iron to form gels for use in subterranean profile modification |
| 03/11/1992 | EP0474327A2 Stable calcined clay slurries |
| 03/11/1992 | EP0474284A1 Method for modifying the permeability of an underground formation |
| 03/11/1992 | EP0473920A1 Thickening copolymers and their use |
| 03/11/1992 | CA2050148A1 Method of suppression of hydrogen sulfide with heterocyclic-amine aldehyde reaction products |
| 03/10/1992 | US5094778 Thickeners |
| 03/10/1992 | US5094762 Mud drilling fluids, additives and process for making the same |
| 03/10/1992 | US5094296 Recovering hydrocarbons |
| 03/10/1992 | US5094295 Enhanced oil recovery using alkylated, sulfonated, oxidized lignin surfactants |
| 03/10/1992 | CA1297215C Nonionic associative thickeners |
| 03/08/1992 | CA2048771A1 Gel method for decreasing permeability around a wellbore |
| 03/04/1992 | EP0473284A2 Combatting blistering in fluid catalytic cracking units |
| 03/04/1992 | EP0472559A1 Use of selected ester oils in water-based drilling fluids of the o/w emulsion type and corresponding drilling fluids with improved ecological acceptability |
| 03/04/1992 | EP0472558A1 The use of selected oleophilic alcohols in water-based drilling fluids of the o/w emulsion type and corresponding drilling fluids with improved ecological acceptability. |
| 03/03/1992 | US5093448 Polymerizable cationic visco-elastic monomer fluids |
| 03/03/1992 | US5093020 Catalyzed chelation |
| 03/03/1992 | US5092935 Fluid loss control additives for oil well cementing compositions |
| 03/03/1992 | US5092405 Alkoxylated surfactant system for heavy oil reservoirs |
| 03/03/1992 | US5092404 Polyvinyl sulfonate scale inhibitor |
| 03/03/1992 | CA1296514C Drilling and completion fluid |
| 03/03/1992 | CA1296513C Water-based drilling and well-servicing fluids with swellable, synthetic layer silicates |
| 02/26/1992 | EP0471705A1 Agent for increasing viscosity in non-aqueous fluid phases, process of making it and its use |
| 02/25/1992 | US5091448 Suspending medium for water soluble polymer |
| 02/25/1992 | US5091376 Of flucose and galactose; stoichiometry |
| 02/25/1992 | US5090479 Method for scale inhibition in oil producing wells |
| 02/25/1992 | US5090478 Method for reducing water production from a gravel packed well |
| 02/25/1992 | CA1296174C Amino resins crosslinked polymer gels for permeability profile control |
| 02/25/1992 | CA1296173C Low fluid loss salt saturated cement slurries, additives and methods |
| 02/24/1992 | CA2038110A1 Stable calcined clay slurries |
| 02/22/1992 | CA2049518A1 Method of reducing fluid loss in cement compositions |
| 02/20/1992 | WO1992002594A1 Use of surface-active alkylglucoside compounds in water-based and oil-based bore-flushing agents and other borehole-treatment fluids |
| 02/19/1992 | EP0471400A1 Process and composition for protecting chrome steel |
| 02/19/1992 | CN1058798A Foam for improving sweep efficiency in subterranean oil-bearing formations |
| 02/18/1992 | US5089619 Methods for treating hydrocarbon recovery operations and industrial waters |
| 02/18/1992 | US5089227 Inhibiting corrosion and scaling with (poly)dithiocarbamates |
| 02/18/1992 | US5089153 Adding an antimony compound, quaternary compound and a surfactant |
| 02/18/1992 | US5089151 Quaternary ammonium compound, minimization of formation permeability damage |
| 02/18/1992 | US5089150 Method of increasing retention of scale inhibitors in subterranean formations |
| 02/18/1992 | US5089149 Fracturing fluid; enhanced oil recovery |
| 02/13/1992 | DE4024892A1 Verwendung oberflaechenaktiver estersulfonat-salze in wasser- und oelbasierten bohrspuelungen und anderen bohrlochbehandlungsmitteln Use oberflaechenaktiver ester sulfonate salts in water and oelbasierten drilling fluids and other downhole treatment products |
| 02/12/1992 | EP0470444A2 Dihydroxypropyl sulfoethyl cellulose ethers, preparation and use thereof |
| 02/11/1992 | WO1992002708A1 Foam for improving sweep efficiency in subterranean oil-bearing formations |
| 02/11/1992 | US5087611 Method of drilling with fluid comprising peanut hulls ground to a powder |
| 02/11/1992 | US5087371 Method for regenerating scale solvent |
| 02/11/1992 | US5086850 Well bore drilling direction changing method |
| 02/11/1992 | US5086841 Method of reducing circulation fluid loss using water absorbing polymer |
| 02/11/1992 | US5086840 Controlled gelation using aluminum chloride or hydroxychloride and urea or hexamethylenetetramine; injecting with gas and foaming surfactant; shutting well for a period of time |
| 02/11/1992 | CA2048087A1 In-situ emulsion polymerization of polyethylene derivatives |
| 02/11/1992 | CA1295473C Low and high temperature drilling fluids based on sulfonated terpolymer ionomers |
| 02/09/1992 | CA2046669A1 Zwitterionic functionalized polymers as deflocculants in water based drilling fluids |
| 02/07/1992 | WO1992002595A1 Use of surface-active ester sulphonate salts in water-based and oil-based bore-flushing agents and other oil-well drilling fluids |
| 02/07/1992 | CA2089095A1 Use of surface-active ester |
| 02/06/1992 | WO1992001780A1 Oil recovery using microorganisms |
| 02/06/1992 | DE4024659A1 Verwendung oberflaechenaktiver alpha-sulfofettsaeure-di-salze in wasser- und oel-basierten bohrspuelungen und anderen bohrlochbehandlungsmitteln Use oberflaechenaktiver alpha-sulfo fatty di-salts in water and oil-based drilling fluids and other downhole treatment products |
| 02/05/1992 | CN1015373B Well-drilling composition diluent |
| 02/04/1992 | WO1992002593A1 USE OF SURFACE-ACTIVE α-SULFO FATTY-ACID DI-SALTS IN WATER-BASED AND OIL-BASED BORE-FLUSHING AGENTS AND OTHER BOREHOLE-TREATMENT FLUIDS |
| 02/04/1992 | US5086089 Programmed gelation of polymers using melamine resins |
| 02/04/1992 | US5085787 Crosslinked vinylamine polymer in enhanced oil recovery |
| 02/04/1992 | US5085709 Chelation of alkaline earth metal and radioactive metal sulfates with polyaminocarboxylic acid chelant and a synergist to remove radioactivity and impurity |
| 02/04/1992 | US5085282 Method for drilling a well with emulsion drilling fluids |
| 02/04/1992 | CA1295120C Aqueous polysaccharide compositions |
| 02/04/1992 | CA1295119C Method of increasing retention of scale inhibitor in subterranean formations |
| 02/04/1992 | CA1295118C Steam foam process |
| 02/03/1992 | CA2044364A1 Phosphinate inhibitor for scale squeeze applications |
| 02/02/1992 | CA2048208A1 Process and composition for protecting chrome steel |
| 02/01/1992 | WO1992002596A1 Water-swelling polymer-mineral composite and method of obtaining it |
| 01/29/1992 | EP0467921A1 Procedure for the admixture of silicon oxide to a hydraulic cement slurry. |
| 01/28/1992 | US5084210 Corrosion inhibitor |
| 01/28/1992 | US5084209 Mixing alkoxide salts and hydrolyzing, gelation |
| 01/28/1992 | US5084192 A blend of acetic acid, formic acid, a quaternary ammonium sal t and an ascorbic acid or erythorbic acid or salts |
| 01/28/1992 | US5084105 Sulfate scale dissolution |
| 01/28/1992 | US5083622 Method for drilling wells |
| 01/28/1992 | US5083612 Enhanced oil recovery |
| 01/28/1992 | US5083611 Alternating permeability |
| 01/28/1992 | US5083610 Recovery of oil from oil reservoirs |
| 01/23/1992 | DE4019266A1 Fliessfaehige bohrlochbehandlungsmittel auf basis von polycarbonsaeureestern Fliessfaehige borehole treatment agents on the basis of polycarboxylic |
| 01/22/1992 | EP0467654A1 Process for cementing oil and gas wells |
| 01/22/1992 | EP0466724A1 Use of selected ethers of monohydric alcohols in drilling-oil muds |
| 01/22/1992 | EP0466722A1 Oleophilic alcohols for use as a component of invert drilling-oil muds |
| 01/21/1992 | US5082579 Method and composition for delaying the gellation of borated galactomannans |