| 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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| 09/17/1980 | EP0015691A2 Microbial polysaccharide, its preparation and use |
| 09/16/1980 | US4222881 Oil recovery process involving the injection of thickened water |
| 09/16/1980 | US4222444 Method of well fluid leak prevention |
| 09/16/1980 | US4222439 Enhanced recovery of petroleum |
| 09/16/1980 | CA1085716A1 Method of treating a well using fluoboric acid to clean a propped fracture |
| 09/16/1980 | CA1085601A1 Enhanced oil recovery using alkaline sodium silicate solutions |
| 09/16/1980 | CA1085600A1 Waterflood oil recovery process employing stabilized biopolymers |
| 09/16/1980 | CA1085599A1 Waterflooding employing amphoteric surfactants |
| 09/16/1980 | CA1085598A1 Method of reducing drag and rotating torque in the rotary drilling of oil and gas wells |
| 09/09/1980 | US4221229 Retro-viscous fluidic fluid |
| 09/02/1980 | US4220585 Drilling fluid additives |
| 09/02/1980 | US4220566 Aqueous based slurry containing enediol breaker and method for forming a consolidated gravel pack |
| 09/02/1980 | US4220204 Oil recovery method utilizing a dialkyl phenol polyethoxy alkyl sulfonate as a solubilizing co-surfactant |
| 09/02/1980 | CA1084683A1 Method of making lightweight cement slurries and their uses |
| 09/02/1980 | CA1084682A1 Water control with polymers |
| 08/26/1980 | US4219471 Hydraulic cements |
| 08/26/1980 | US4219429 Addition polymers, enhanced oil recovery |
| 08/26/1980 | US4219083 Nitrogen gas-generating reactants, reaction-retarding alkaline buffer, ph-reducing reactant |
| 08/26/1980 | US4219082 Lignosulfonate-formaldehyde condensation products as additives in oil recovery processes involving chemical recovery agents |
| 08/26/1980 | CA1084252A1 Method for acidizing a subterranean formation |
| 08/26/1980 | CA1084251A1 Drilling fluid lubricant |
| 08/26/1980 | CA1084250A1 Controlling corrosion in gas-containing aqueous drilling fluid |
| 08/20/1980 | EP0014267A1 Process for treating a well for starting hydrocarbon fluid production by injecting nitrogen-generating liquid |
| 08/19/1980 | US4218327 Stabilizing the viscosity of an aqueous solution of polysaccharide polymer |
| 08/19/1980 | US4217965 Cottonseed hulls, bentonite, and surfactant to seal porous formations |
| 08/19/1980 | US4217958 Sacrificial agents for petroleum recovery processes |
| 08/19/1980 | US4217957 Oil recovery method |
| 08/19/1980 | CA1083953A1 Surfactant water flooding oil recovery process |
| 08/12/1980 | US4217329 Corrosion inhibitors |
| 08/12/1980 | US4217231 Low fluid loss foam |
| 08/12/1980 | US4217230 Water soluble polymer of vinylsulfonic acid ackoxylated with glycidol |
| 08/12/1980 | US4217229 Naphthalene formaldehyde sulfonate, weighting agent, hydroxyalkyl cellulose, halide |
| 08/12/1980 | US4217146 Crude oil, titanium dioxide weighting agent |
| 08/12/1980 | US4216829 Neutral polysaccharide, surfactant mixture |
| 08/12/1980 | US4216828 Method of recovering petroleum from a subterranean reservoir incorporating an acylated polyether polyol |
| 08/12/1980 | CA1083333A1 Water-based drilling fluids having enhanced fluid loss control |
| 08/06/1980 | EP0013836A1 Compositions containing acrylic emulsion copolymers and their use as thickeners |
| 08/05/1980 | US4216098 Alkoxylated vinyl sulfonic acid polymer |
| 08/05/1980 | US4216097 Waterflooding employing amphoteric surfactants |
| 08/05/1980 | US4216022 Well cementing in permafrost |
| 08/05/1980 | CA1082906A1 Oil well spacer fluids |
| 07/29/1980 | US4215001 Thixotropic fracturing fluid by shearing a polymerized alkali metal silicate gel |
| 07/29/1980 | US4215000 Dissolving barium sulfate scale with aqueous solutions of bicyclic macrocyclic polyethers and organic acid salts |
| 07/29/1980 | US4214999 Surfactant flooding oil recovery process |
| 07/29/1980 | CA1082732A1 Surface-active agent |
| 07/29/1980 | CA1082589A1 Method of consolidating a subterranean formation |
| 07/29/1980 | CA1082441A1 Oil recovery by waterflooding employing succinimido aryl sulfonate surfactants |
| 07/29/1980 | CA1082440A1 Process for reinforcing geological formations |
| 07/29/1980 | CA1082438A1 Spacer composition and method of use |
| 07/24/1980 | WO1980001495A1 Method and device for preparing a drilling mud |
| 07/22/1980 | US4213866 Composition and process for removing sulfur scale from interstices in petroleum bearing formations and the like to improve the flow of petroleum |
| 07/22/1980 | US4213500 Forming oil in water emulsion |
| 07/22/1980 | CA1082103A1 Progressive displacement of residual water past shut- in wells preparatory to tertiary |
| 07/22/1980 | CA1082102A1 Method of treating a high temperature formation to permit the use therein of temperature sensitive hydrophilic, viscosity increasing polymers |
| 07/22/1980 | CA1082101A1 Process for displacing oil with aqueous sulphonate and alcohol surfactant system |
| 07/15/1980 | US4212794 Tall oil lubricant additive |
| 07/15/1980 | US4212748 Xanthomonas-produced heteropolysaccharide thickener, hydrocarbon sulfonate or sulfated alkoxylated alcohol surfactant |
| 07/15/1980 | US4212747 Shear-thickening compositions |
| 07/15/1980 | US4212354 Method for injecting carbon dioxide into a well |
| 07/15/1980 | US4212353 Hydraulic mining technique for recovering bitumen from tar sand deposit |
| 07/15/1980 | CA1081638A1 Method and apparatus for alga biopolymer synthesis employing diurnal radiation cycles |
| 07/15/1980 | CA1081443A1 Control of incompetent formations with thickened compositions containing base-settable resin |
| 07/15/1980 | CA1081442A1 Waterflood oil recovery process employing divalent ion tolerant surfactant systems |
| 07/09/1980 | EP0012759A1 Stabilized petroleum sulfonate products and their use in subterranean oil recovery. |
| 07/08/1980 | CA1080955A1 Flooding polyvalent ion-containing oil reservoirs with micellar dispersions |
| 07/01/1980 | US4210455 Retarded aqueous hydraulic cement slurry |
| 07/01/1980 | US4210206 High temperature well treating with crosslinked gelled solutions |
| 07/01/1980 | US4210205 Injection of acid solution of vinylpyrrolidone terpolymer to facilitate flow of oil |
| 07/01/1980 | US4210204 Pectins, polygalacturonates |
| 07/01/1980 | CA1080612A1 Terminating the flow of fluids from uncontrolled wells |
| 07/01/1980 | CA1080459A1 Setting retarding composition for well cementing and recementing |
| 06/24/1980 | US4209409 Magnesium oxide, bentonite, ferrochrome lignosulfonate, alkalinity |
| 06/24/1980 | CA1079948A1 Acidizing asphaltenic oil reservoirs with acids containing salicylic acid |
| 06/24/1980 | CA1079947A1 Waterflood oil recovery process employing biopolymers of enhanced viscosity yield |
| 06/24/1980 | CA1079946A1 Process for temporarily plugging a permeable subterranean earth formation |
| 06/17/1980 | US4207946 Injection with a vinylpyrrolidone polymer and a petroleum sulfonate |
| 06/17/1980 | US4207945 Injecting a vapor mixture of steam and a petroleum fraction containing carboxylic acids and phenols |
| 06/17/1980 | CA1079526A1 Organic amine process for sulfur removal from circulating oil used in sour gas wells |
| 06/17/1980 | CA1079508A1 Process for increasing the yield of petroleum with the flooding of the petroleum deposits by using non-ionic, boundary surface-active substances |
| 06/17/1980 | CA1079507A1 Plugging high permeability zones of reservoirs having heterogeneous permeability |
| 06/10/1980 | US4207194 Chemical wash with fluid loss control |
| 06/10/1980 | US4206809 Slug design in micellar-polymer flooding |
| 06/03/1980 | US4206058 Method for stimulating well production |
| 06/03/1980 | US4205724 Well treating compositions |
| 06/03/1980 | US4205723 Injection of gas and water excluding agent |
| 06/03/1980 | CA1078599A1 Calcite control in an in situ leach operation |
| 05/27/1980 | US4204574 Low shear polymer injection method with ratio control between wells |
| 05/27/1980 | CA1078160A1 Aqueous anionic surfactant systems |
| 05/20/1980 | US4203853 Fluid for recovering hydrocarbons |
| 05/20/1980 | US4203492 Injecting noncorrosive alkali metal or ammonium fluoride salt solution and halogenated hydrocarbon in situ hydrolysis |
| 05/20/1980 | US4203491 Chemical flood oil recovery with highly saline reservoir water |
| 05/20/1980 | CA1077832A1 Method of treating formation to remove ammonium ions without decreasing permeability |
| 05/20/1980 | CA1077701A1 Aqueous based slurry and method for forming a consolidated gravel pack |
| 05/20/1980 | CA1077700A1 Alkyl glyceryl ether sulfonate salts in oil recovery |
| 05/15/1980 | WO1980000921A1 Aqueous micro emulsions of organic substances |
| 05/13/1980 | US4202795 Pellets comprised of the chemical to be released a hydratable gelling agent and a breaker for the gel produced |
| 05/13/1980 | US4202413 Well cementing process using presheared water swellable clays |
| 05/13/1980 | US4202411 Magnesium oxide react with magnesium chloride to provide impervious matrix |
| 05/13/1980 | CA1077253A1 Waterflooding process employing cationic-nonionic copolymers |
| 05/06/1980 | US4201679 Sepiolite and a partially hydrolyzed polyacrylamide extender |