| 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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| 04/11/1989 | US4820429 Synergistic mixture of alpha-olefin sulfonate and alkylated diphenyl oxide sulfonate |
| 04/11/1989 | US4820428 Nitroalkanol and cellulose ether binder, for sulphate reducing bacteria in gas and oil wells |
| 04/11/1989 | US4819729 Water flooding; enhanced oil recovery |
| 04/11/1989 | US4819727 Adding pumpable gel plug, solididying, cementing |
| 04/11/1989 | US4819723 Injection of alkali metal silicate in hydrocarbon; breaking emulsion adjacent well bore with microwave energy |
| 04/11/1989 | CA1252344A1 Particles, modified at their surface by hydrophilic and hydrophobic groups |
| 04/11/1989 | CA1252281A1 Drilling fluid |
| 04/06/1989 | WO1989002774A1 Apparatus and method for removing and recovering oil and/or other oil-based drilling mud additives from drill cuttings |
| 04/04/1989 | US4818298 Cleaning with liquid jets, impregnating with corrosion inhibitor |
| 04/04/1989 | US4817721 Injection of polymerizable bicyclic lactones, ortho esters, and spiro orthocarboantes |
| 04/04/1989 | US4817720 Injection of hydrocarbon emulsion; displacement, precipitation |
| 04/04/1989 | US4817719 Method for suspending wells |
| 04/04/1989 | US4817717 Hydraulic fracturing with a refractory proppant for sand control |
| 04/04/1989 | US4817715 Aqueous flooding methods for tertiary oil recovery |
| 04/04/1989 | CA1251924A1 Process for optimizing the noncondensible gas content of an oil-displacing steam-foam-forming mixture |
| 03/29/1989 | EP0309210A1 Inhibition of hydrate formation |
| 03/28/1989 | US4816551 Reaction product of dibasic dimerized or trimerized fatty acid, alkanol amine and polyalkylenepolyamines |
| 03/28/1989 | US4816303 Process for inhibiting corrosion of metal and corrosion-inhibiting layer use therein |
| 03/28/1989 | US4816077 Process for the preparation of an aqueous solution of a heteropolysaccharide |
| 03/28/1989 | US4815537 Method for viscous hydrocarbon recovery |
| 03/28/1989 | CA1251629A1 Surfactant composition and process for the production of oil using such a composition |
| 03/28/1989 | CA1251628A1 Process for the degradation of a viscous microbial polysaccharide formulation, a process for preparing an acid degradable polysaccharide formulation, and a polysaccharide formulation thereby obtained |
| 03/28/1989 | CA1251627A1 Aqueous well fluids |
| 03/23/1989 | DE3828977A1 Composition and method for removing deposits, encrustations and the like |
| 03/22/1989 | EP0308257A2 Novolac coated ceramic particulate |
| 03/22/1989 | EP0308138A1 Stabilizing clay-containing formations |
| 03/22/1989 | EP0307997A1 Dispersing agent for cement-slurry compounds, compounds containing this agent and procedures for the cementing of oil wells or similar |
| 03/21/1989 | US4814389 Drilling fluid dispersant |
| 03/21/1989 | US4814096 Enhanced oil recovery process using a hydrophobic associative composition containing a hydrophilic/hydrophobic polymer |
| 03/21/1989 | US4814094 Oil recovery method utilizing highly oxyalklated phenolic resins |
| 03/21/1989 | US4813484 Chemical blowing agents for improved sweep efficiency |
| 03/21/1989 | US4813483 Post-steam alkaline flooding using buffer solutions |
| 03/21/1989 | US4813482 Method for removal of paraffin from producing oil wells |
| 03/15/1989 | EP0306546A1 Irradiation produced AMPS/Am copolymers in thickened acid compositions |
| 03/14/1989 | US4812544 Method of producing polymers of amido-sulfonic acid monomers with high energy agitators |
| 03/14/1989 | US4812244 Sulfonated styrene-maleimide copolymer, sodium acrylate-methacrylate copolymer |
| 03/14/1989 | US4811791 Enhanced oil recovery |
| 03/14/1989 | US4811788 Surfactant combinations and enhanced oil recovery method employing same |
| 03/14/1989 | US4811787 Method for reducing the permeability of underground strata during secondary recovery of oil |
| 03/14/1989 | CA1251223A1 Ceramic spheroids having low density and high crush resistance |
| 03/08/1989 | EP0305612A1 Method for foam emplacement in carbon dioxide enhanced recovery |
| 03/08/1989 | EP0305611A1 Foaming acid-containing fluids |
| 03/07/1989 | US4810732 Enhanced oil recovery |
| 03/07/1989 | US4809783 Method of dissolving organic filter cake |
| 03/07/1989 | US4809782 Permeability control |
| 03/07/1989 | US4809781 Method for selectively plugging highly permeable zones in a subterranean formation |
| 03/07/1989 | US4809780 Method for sealing thief zones with heat-sensitive fluids |
| 03/07/1989 | CA1250856A1 Methods and compositions for increasing hydrocarbon production from subterranean formations |
| 03/01/1989 | CN1031369A Polyalky leneoxyamine catalysts for dialkyl disulfides and/or polysulfides used in dissolving sulfur |
| 02/28/1989 | US4808739 Cross-linking titanium & zirconium chelates & their use |
| 02/28/1989 | US4808648 Enhanced oil recovery composition |
| 02/28/1989 | US4807703 Injecting foamed, gelled acid followed by foamed acid; fingering, uneven etching |
| 02/28/1989 | US4807702 Method for improving high impulse fracturing |
| 02/28/1989 | CA1250519A1 Treatment of steam feedwater with co.sub.2 to reduce oil well reservoir gravel and sand dissolution during steam injection |
| 02/23/1989 | WO1989001491A1 Base fluid for the preparation of fluids applicable in connection with exploitation of petroleum reservoirs |
| 02/21/1989 | US4806164 Method of reducing fluid loss in cement compositions |
| 02/15/1989 | EP0302863A1 Process for strengthening and sealing geological formations |
| 02/14/1989 | US4804793 Polyvinyl amides, partially hydrolyzed |
| 02/14/1989 | US4804485 Antifouling agents to prevent sulfur plugging in sour oil and gas wells |
| 02/14/1989 | US4804484 Sodium bromide, sodium tartrate, nitrilotriacetic acid amides |
| 02/14/1989 | US4804043 Using a crosslinkable mixture of partially hydrolyzed polyacrylamide, phenol, formaldehyde |
| 02/08/1989 | EP0302544A2 High temperature guar-based fracturing fluid |
| 02/08/1989 | EP0302404A1 Aqueous adapted mixtures of surfactants and their utilisation for oil recovery |
| 02/07/1989 | US4802998 Powder-form lubricant additives for water-based drilling fluids |
| 02/07/1989 | US4802534 Method and device for manipulating ferrofluids for use in cementing wells |
| 02/07/1989 | US4802533 Method of controlling permeability damage of hydrocarbon formations during steam injection while preventing pipe corrosion |
| 02/07/1989 | EP0224474A4 Water soluble perforation pack. |
| 02/07/1989 | CA1249777A1 Process for passing carbon dioxide through a cased, cemented and perforated well |
| 02/07/1989 | CA1249712A1 Method of preparation of substituted amino-alkyl sulfonic acid zwitterions and use in the treatment of subterranean formations |
| 02/01/1989 | EP0301626A1 Pyrolytic carbon coating of media improves gravel packing and fracturing capabilities |
| 01/31/1989 | US4801389 High temperature guar-based fracturing fluid |
| 01/31/1989 | US4800960 Consolidatable gravel pack method |
| 01/31/1989 | US4800959 Microbial process for selectively plugging a subterranean formation |
| 01/31/1989 | US4800957 Recovering hydrocarbons with a mixture of carbon dioxide and alcohol |
| 01/31/1989 | CA1249428A1 Surfactant composition and process for the production of oil using such a composition |
| 01/24/1989 | US4799553 Petroleum sulfonate adjuvants in epoxy resin corrosion-inhibiting composition |
| 01/24/1989 | US4799551 Carbon dioxide slugs with clay effect inhibiting cations |
| 01/24/1989 | US4799550 Subterranean formation treating with delayed crosslinking gel fluids |
| 01/24/1989 | US4799549 Plugging soil for oil recovery |
| 01/24/1989 | US4799548 Enhanced oil recovery, crosslinking |
| 01/24/1989 | US4799547 Anionic surfactants for enhanced oil recovery |
| 01/24/1989 | US4799545 Enhanced oil recovery using bacillus |
| 01/19/1989 | DE3822734A1 Process for the assisted recovery of hydrocarbons in a silicon-containing geological formation |
| 01/18/1989 | EP0299777A2 Inhibition of reservoir scale |
| 01/17/1989 | US4798902 Zirconium chelates and their use for cross-linking |
| 01/17/1989 | US4798871 Compositions containing high molecular weight poly(vinylamines) for enhanced oil recovery |
| 01/17/1989 | US4798245 Enhanced oil recovery |
| 01/17/1989 | CA1248743A1 Drilling fluid |
| 01/11/1989 | EP0298402A2 Cross-linked organopolysiloxanes and emulsions based thereon |
| 01/11/1989 | EP0298096A1 Method for stabilizing clayish formations |
| 01/10/1989 | US4797461 Amorphous high molecular weight copolymers of ethylene and alpha-olefins |
| 01/10/1989 | US4797450 Additives for water-base drilling fluid and process |
| 01/10/1989 | US4797223 Water soluble polymers for detergent compositions |
| 01/10/1989 | US4797216 Delayed crosslinker composition |
| 01/10/1989 | US4797159 Magnesium oxide made by roasting |
| 01/10/1989 | US4797158 Flexible grout composition and method |
| 01/10/1989 | US4796703 Compositions for agglomerating solid contaminants in well fluids and methods for using same |
| 01/10/1989 | US4796702 Multipurpose aqueous foamer |
| 01/10/1989 | US4796701 Pyrolytic carbon coating of media improves gravel packing and fracturing capabilities |
| 01/10/1989 | US4796700 Process for retarding fluid flow |