| 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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| 02/04/1993 | WO1993002155A1 Hydrogen sulfide scavengers in fuels, hydrocarbons and water using amidines and polyamidines |
| 02/03/1993 | EP0526310A1 Use of scleroglucan as high temperature additive for well cements |
| 02/03/1993 | EP0525037A1 Dispersant compositions for subterranean well drilling and completion. |
| 02/03/1993 | EP0524995A1 Use of hydrated castor oil as a viscosity promoter in oil-based drilling muds |
| 02/02/1993 | US5183699 Wafer processing films |
| 02/02/1993 | US5183581 Pumping simultaneously into the well the ammonium chloride and sodium nitrite solvent emulsions to generate heat and nitrogen , dissolving paraffins |
| 02/02/1993 | US5183112 Contacting with aqueous alkaline solution comprising chelating agent and synergist anion, and sparging the solvent with air to dissolve scale |
| 02/02/1993 | CA1313369C Sulfur dissolving composition |
| 01/27/1993 | EP0524723A1 Hydrogen sulfide scavengers in fuels, hydrocarbons and water using amidines and polyamidines |
| 01/26/1993 | US5182380 Dihydroxypropyl sulphoethyl celluloses, their preparation and their use |
| 01/26/1993 | US5182051 Raioactive tracing with particles |
| 01/26/1993 | US5181568 Methods of selectively reducing the water permeabilities of subterranean formations |
| 01/26/1993 | US5181567 Injection of quaternary amines as antideposit agents |
| 01/26/1993 | CA1313128C Method of treating a permeable formation |
| 01/26/1993 | CA1313127C Method of protecting a permeable formation |
| 01/23/1993 | CA2074044A1 Micro-slug injection of surfactants in an enhanced oil recovery process |
| 01/20/1993 | EP0523112A1 Branched ether surfactants and their use in an enhanced oil recovery process. |
| 01/20/1993 | EP0523111A1 Branched ether surfactants and their use in an enhanced oil recovery process. |
| 01/20/1993 | CA2074141A1 Compositions for iron control in acid treatments for oil wells |
| 01/19/1993 | WO1993002151A1 Methods of drilling well boreholes and compositions used therein |
| 01/19/1993 | US5180020 Method for inhibiting the initiation and propagation of formation fractures while drilling |
| 01/19/1993 | CA2088480A1 Methods of drilling well boreholes and compositions used therein |
| 01/19/1993 | CA2071340A1 Hydrogen sulfide scavengers in fuels, hydrocarbons and water using amidines and polyamidines |
| 01/13/1993 | CA2073577A1 Method for preventing or retarding the formation of hydrates |
| 01/12/1993 | US5179173 Aminoalkylphosphinates and phosphinic acid-containing polymers therefrom |
| 01/12/1993 | US5179136 Enhanced or recovery operations |
| 01/12/1993 | US5179076 Rheologically-stable water-based high temperature drilling fluid |
| 01/12/1993 | US5178218 Petroleum wells with resins for consolidation |
| 01/12/1993 | US5178217 Gas foam for improved recovery from gas condensate reservoirs |
| 01/07/1993 | EP0521376A2 Method of grouting porous gas- and petroleum-bearing formations |
| 01/05/1993 | US5176848 Corrosion control composition |
| 01/03/1993 | WO1993001251A1 Drilling, completion, and workover fluids comprising ground peanut hulls |
| 12/30/1992 | EP0520840A1 Methods of treating a subterranean formation |
| 12/30/1992 | EP0520839A1 Method of forming rubber plug in a well or formation |
| 12/30/1992 | EP0520775A1 Solution of welan gum in ethylene glycol |
| 12/30/1992 | EP0520761A2 Amine adducts as corrosion inhibitors |
| 12/29/1992 | US5175278 Heteropolysaccharide S-657 |
| 12/29/1992 | US5175133 Ceramic microspheres |
| 12/29/1992 | US5174957 Emulsion minimizing corrosion inhibitor for naphtah/water systems |
| 12/29/1992 | US5174913 Polybasic acid esters as oil field corrosion inhibitors |
| 12/29/1992 | US5174378 Microbial manipulations of surfactant-containing foams to reduce subterranean formation permeability |
| 12/29/1992 | CA2071711A1 Enhanced solubility of welan gum in ethylene glycol |
| 12/29/1992 | CA1312005C Method of preventing fines migration |
| 12/29/1992 | CA1311914C Oil field corrosion inhibition |
| 12/28/1992 | CA2072549A1 Well completion and remedial methods utilizing rubber latex compositions |
| 12/28/1992 | CA2072468A1 Methods of preparing and using stable oil external-aqueous internal emulsions |
| 12/24/1992 | DE4120041A1 Verwendung ausgewaehlter oleophiler verbindungen mit erhoehter biologischer vertraeglichkeit zur verbesserung der oelbenetzbarkeit feinteiliger feststoffe und deren anwendung als fluid-loss-additive Use of selected oleophilic compounds of finely divided solids with an elevated biological compatibility to increase oil wettability and its application as a fluid loss additive |
| 12/23/1992 | WO1992022622A1 Use of selected oleophilic compounds with increased biological a cceptability to improve the oil-wettability of finely divided solids and their use as fluid-loss additives |
| 12/23/1992 | WO1992022621A1 Drilling mud compositions |
| 12/23/1992 | EP0519756A1 Thixotropic well cementing composition |
| 12/23/1992 | EP0519639A1 Viscosity reduction of downhole viscous fluids |
| 12/23/1992 | EP0414708B1 Recovery of oil from oil reservoirs |
| 12/23/1992 | CA2111211A1 Drilling mud compositions |
| 12/22/1992 | US5172763 Steam-foam drive |
| 12/22/1992 | CA2062395A1 Sand consolidation methods |
| 12/22/1992 | CA1311605C Method for reducing the viscosity of aqueous fluids |
| 12/20/1992 | CA2071387A1 Catalyst for breaker system for high viscosity fluids |
| 12/15/1992 | US5171460 Method for preventing metal carbonate scale formation in a well penetrating a subterranean formation |
| 12/15/1992 | US5171459 Phosphate ester or phosphonate calcium carbonate inhibitor, alkyldiphenyl oxide sulfonate sulfide dispersant |
| 12/15/1992 | US5171454 Adding acrolein to control growth of Thiobacillus ferrooxidans |
| 12/10/1992 | WO1992021851A1 Gel method for preventing water-influx |
| 12/10/1992 | WO1992021612A1 Process for the production of high-swelling layer silicates |
| 12/10/1992 | CA2110173A1 An aqueous and petroleum gel method for preventing water-influx |
| 12/09/1992 | EP0413783A4 Thickening agents for aqueous systems |
| 12/08/1992 | US5169559 Mixing hydroxypropyl cellulose and alkali metal dodecyl sulfate |
| 12/08/1992 | US5168930 Injecting anhydrous acid, shutting in the well for sufficient time to allow acidic solution to react with the formation, thereby increasing permeability |
| 12/08/1992 | US5168928 Preparation and use of gelable silicate solutions in oil field applications |
| 12/08/1992 | CA1311190C Cementing oil and gas wells using converted drilling fluid |
| 12/08/1992 | CA1311116C Process for removing flow-restricting material from wells |
| 12/07/1992 | CA2044048A1 Drilling fluid |
| 12/04/1992 | CA2070212A1 Compositions for iron control in acid treatments for oil wells |
| 12/03/1992 | DE4117323A1 Vereinfachtes verfahren zur herstellung von hoch-quellfaehigen schichtsilikaten (iv) Simplified method for manufacturing high-quellfaehigen layer silicates (iv) |
| 12/02/1992 | EP0320288B1 Cementing oil and gas wells using converted drilling fluid |
| 12/01/1992 | US5167828 Phosphinate-containing polymers for controlling scale in underground petroleum-containing formations and equipment associated therewith |
| 12/01/1992 | US5167281 Injecting surfactant system into a subterranean formation to move hydrocarbons so that they can be recovered at a well |
| 12/01/1992 | US5167280 Single horizontal well process for solvent/solute stimulation |
| 12/01/1992 | CA2060159A1 Rate controllable gel for conformance improvement treatment in a subterranean hydrocarbon-bearing formation |
| 11/24/1992 | US5166275 Copolymer of polymerizable components in naphtha oil and maleic anhydride, process for producing said copolymers, and derivatives thereof |
| 11/24/1992 | US5165479 Method for stimulating subterranean formations |
| 11/24/1992 | US5165477 Enzymatic decomposition of drilling mud |
| 11/24/1992 | CA1310632C Esters of fatty acids, which may be quaternized, from oxalkylated alkylalkylenediamines |
| 11/19/1992 | EP0513899A1 Cleaning methods |
| 11/19/1992 | EP0513041A1 Use of selected ether-based emulsifiers in oil-based invert emulsions |
| 11/17/1992 | US5164468 Antiscaling agents for industrial water systems |
| 11/17/1992 | US5164099 Encapsulations for treating subterranean formations and methods for the use thereof |
| 11/17/1992 | US5163510 Method of microbial enhanced oil recovery |
| 11/12/1992 | WO1992019693A1 Use of selected oleophilic compounds with quaternary nitrogen to improve the oil wettability of finely divided clay and their use as viscosity promoters |
| 11/12/1992 | WO1992019568A1 Method of cementing a well |
| 11/12/1992 | DE4114906A1 Verwendung ausgewaehlter oleophiler verbindungen mit quartaerem stickstoff zur verbesserung der oelbenetzbarkeit feinteiliger tone und deren anwendung als viskositaetsbildner Use of selected oleophilic compounds with quaternary nitrogen for improved oil wettability of finely divided tone and their application as thickeners |
| 11/11/1992 | EP0512501A2 Use of acetals |
| 11/10/1992 | US5162417 Gelled acidizer composition |
| 11/10/1992 | US5161915 Liquid, binder, cellulose and plastic fibers to prevent erosion; thick viscid slurry capable of being sprayed; forming cover by mixing ingredients; waste pile covering process |
| 11/10/1992 | US5161615 Method for reducing water production from wells |
| 11/09/1992 | CA2068129A1 Use of acetals |
| 11/04/1992 | EP0511690A2 Family of xanthan-based polysaccharide polymers including non-acetylated and/or non-pyruvylated gum |
| 11/03/1992 | US5160643 Method for delaying the gellation of borated galactomannans with a delay additive such as glyoxal |
| 11/03/1992 | US5160642 Imidized and quaternized polymaleic anhydride, enhanced oil recovery |
| 11/03/1992 | US5160445 Borate cross-linking solutions |
| 11/03/1992 | US5159980 Oil and gas |
| 11/03/1992 | US5159979 Enhanced oil recovery |