| 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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| 01/13/1981 | US4244826 Water, a water-dispersible polymer, an acid, an aldehyde, and a phenolic compound |
| 01/07/1981 | EP0021607A1 Use of an additive for improving the cold flow properties of a petroleum oil, petroleum compositions containing this additive and masterbatches containing this additive |
| 01/07/1981 | EP0021515A1 A starch product suitable for use in drilling muds, a method for producing the same, a drilling mud containing said product and a method for drilling a shaft |
| 01/06/1981 | CA1092797A1 Method for controlling permeability of subterranean formations |
| 01/06/1981 | CA1092796A1 Well stimulation method using foamed acid |
| 12/30/1980 | US4242141 Rapid-setting dry packing mix for eliminating bore hole troubles and method of manufacture thereof |
| 12/30/1980 | US4241791 Method for diverting a gaseous sand-consolidating fluid |
| 12/30/1980 | CA1092612A1 Method for the production of 2,4,6-tri-(3,5- ditertiary butyl-4-hydroxybenzyl) mesitylene |
| 12/30/1980 | CA1092508A1 Process for slowly acidizing carbonate material in or around a well |
| 12/23/1980 | US4240924 Compositions capable of forming aqueous systems having pseudoplastic properties |
| 12/23/1980 | US4240915 Water and aluminum hydroxide |
| 12/23/1980 | US4240505 Well acidizing compositions and methods |
| 12/23/1980 | US4240504 Simultaneous microemulsion-aqueous phase flooding process |
| 12/23/1980 | CA1091913A1 Rendering porous structures impermeable by treatment with gellable amide polymers |
| 12/23/1980 | CA1091912A1 Foaming and silt suspending agent |
| 12/16/1980 | US4239915 Surfactants, intermediates of chromium complexes |
| 12/16/1980 | US4239634 Lubricating oil containing a surface active agent |
| 12/16/1980 | US4239630 Dialkyl disulfide and aliphatic amine |
| 12/16/1980 | US4239629 Gelled by addition of a dichromate |
| 12/16/1980 | US4239628 Optimizing cosurfactant in microemulsion for specific oil |
| 12/16/1980 | CA1091576A1 Ion exchange controlled chemically aided waterflood oil recovery process |
| 12/16/1980 | CA1091438A1 Method of controlling fluid loss from thixotropic cement |
| 12/16/1980 | CA1091437A1 Waterflooding with thickened surfactant solution containing a sulfonated polyethoxylated aliphatic alcohol |
| 12/11/1980 | WO1980002721A1 Removing elemental sulfur from high temperature,high pressure wells |
| 12/11/1980 | WO1980002720A1 Removing elemental sulfur from high temperature,high pressure wells |
| 12/11/1980 | WO1980002700A1 Inhibiting corrosion in high temperature,high pressure gas wells |
| 12/11/1980 | WO1980002699A1 Inhibiting corrosion in high temperature,high pressure gas wells |
| 12/09/1980 | US4238350 Method and a composition for inhibiting corrosion |
| 12/09/1980 | US4238349 Enhanced oil recovery, hydrazine salts of amido carboxylic acids |
| 12/09/1980 | US4237977 Removal of water from gas well borehole with solid foaming agent |
| 12/09/1980 | US4237975 Well stimulation method using foamed acid |
| 12/09/1980 | US4237974 Injecting a soluble metal halide or sulfate-containing gel pad fluid before acidification |
| 12/09/1980 | CA1091083A1 Thickening compositions containing xanthan gum, guar gum and starch |
| 12/02/1980 | US4237018 Shearing the alkyl or alkylaryl polyalkoxysulfate surfactant prior to injecting into the formation |
| 12/02/1980 | US4237017 Steam flooding hydrocarbon recovery composition |
| 12/02/1980 | US4236849 Calicium sulphate, acrylic acid polymer and salt of iron, copper or aluminum |
| 12/02/1980 | US4236579 Injection of aqueous solution of lignosulfonate salt modified by alkoxylation to prevent adsorption on reservoir matrix |
| 12/02/1980 | CA1090549A1 Process and self-acidifying liquid system for dissolving a siliceous material in a remote location |
| 11/26/1980 | EP0019470A1 Process for preparing detergent compositions containing nonionic surfactants |
| 11/25/1980 | US4235838 In oil and gas wells |
| 11/25/1980 | US4235811 Oil and fuel additives; catalysts for making polyisocyanurates |
| 11/25/1980 | US4235728 Drilling fluids containing novel compositions of matter |
| 11/25/1980 | US4235727 For reducing the viscosity |
| 11/25/1980 | US4235290 Lignosulfonates as additives in oil recovery processes involving chemical recovery agents |
| 11/25/1980 | CA1090246A1 Method for acidizing a subterranean formation |
| 11/25/1980 | CA1090114A1 Chemical wash with fluid loss control |
| 11/25/1980 | CA1090112A1 Breaker for low temperature gels |
| 11/18/1980 | US4234689 Production of α-emulsans |
| 11/18/1980 | US4234629 Method for improving the removal of oil from surfaces |
| 11/18/1980 | US4234433 Recovery of petroleum with chemically treated high molecular weight polymers |
| 11/18/1980 | US4234344 Lightweight cement and method of cementing therewith |
| 11/18/1980 | CA1089790A1 Multistage process for production of alga biopolymer and biomass |
| 11/11/1980 | US4233166 Composition for recovering hydrocarbons |
| 11/11/1980 | US4233165 A water in oil emulsion having an external phase comprising liquid hydrocarbon and a surfactant soluble in the hydrocarbon |
| 11/11/1980 | US4233162 Oil well fluids and dispersants |
| 11/11/1980 | US4232741 Temporarily plugging a subterranean reservoir with a self-foaming aqueous solution |
| 11/11/1980 | US4232740 High temperature stable sand control method |
| 11/11/1980 | US4232739 Aqueous polysaccharide-containing fluid having superior filterability and stability and their use in recovering oil |
| 11/11/1980 | US4232738 Injection of nonaqueous petroleum distillates |
| 11/11/1980 | US4232737 Double tapered surfactant waterflood oil recovery process |
| 11/11/1980 | CA1089213A1 Oil recovery by surfactant waterflooding with hydrocarbyl amino ether-linked alkane sulfonates |
| 11/11/1980 | CA1089212A1 Enhanced oil recovery process |
| 11/04/1980 | US4231882 Treating subterranean well formations |
| 11/04/1980 | US4231869 Permanent cobalt catalyst for sulfite oxygen scavenging |
| 11/04/1980 | US4231428 Well treatment method |
| 11/04/1980 | US4231427 Adding an alkanol and a phenol to increase the viscosity and phase stability |
| 11/04/1980 | US4231426 Method of using tracer fluids for enhanced oil recovery |
| 11/04/1980 | CA1088736A1 Waterflooding employing mixtures of sulfonate surfactants |
| 10/28/1980 | US4230801 Biosynthesis |
| 10/28/1980 | US4230587 Additive composition for release of stuck drill pipe |
| 10/28/1980 | US4230586 Alkaline earth metal compounds, clays |
| 10/28/1980 | US4230184 Sulfur extraction method |
| 10/28/1980 | US4230183 Method for treating subterranean, clay-containing earth formations |
| 10/28/1980 | US4230182 Oil recovery method employing alternate slugs of surfactant fluid and fresh water |
| 10/21/1980 | CA1088109A1 High temperature cement system |
| 10/21/1980 | CA1087833A1 Oil well consolidation treating process and additive |
| 10/15/1980 | EP0017398A1 Demolition agent, its preparation and its use |
| 10/14/1980 | US4228019 Acrylamide-vinylsulfonic acid copolymer alkoxylated with ethylene oxide |
| 10/14/1980 | US4228018 Secondary recovery process |
| 10/14/1980 | US4228017 Acrylamide-vinylsulfonic acid copolymer alkoxylated with glycidol |
| 10/14/1980 | US4228016 Secondary recovery process |
| 10/14/1980 | US4227575 Reservoir stabilization by treating water sensitive clays |
| 10/14/1980 | CA1087517A1 Starting gas production by injecting nitrogen- generating liquid |
| 10/07/1980 | US4226731 Secondary recovery process utilizing sulfonated polyphenols |
| 10/07/1980 | US4226730 Secondary recovery method utilizing thickened water |
| 10/07/1980 | CA1086934A1 Self-breaking retarded acid emulsion |
| 10/07/1980 | CA1086933A1 Method of acidizing an underground formation and a buffer-regulated mud acid for use in such method |
| 10/02/1980 | WO1980002032A1 Method of processing the drilling mud |
| 10/01/1980 | EP0016640A1 Xanthan gum slurries |
| 10/01/1980 | EP0016546A1 Extracellular microbial lipoheteropolysaccharides and derivatives, their preparation and compositions containing them, and their uses |
| 09/30/1980 | US4225445 Polymers for acid thickening |
| 09/30/1980 | CA1086485A1 Acidizing reservoirs while chelating iron with sulfosalicylic acid |
| 09/30/1980 | CA1086484A1 Control of incompetent formations with thickened acid- settable resin compositions |
| 09/23/1980 | US4223733 Method for cementing oil wells |
| 09/23/1980 | US4223732 Amphoteric surfactant |
| 09/23/1980 | US4223731 Method for enhanced recovery of petroleum |
| 09/23/1980 | US4223730 Method for the tertiary recovery of petroleum by flooding with hot water and an aqueous alkaline solution |
| 09/23/1980 | US4223728 Method of oil recovery from underground reservoirs |
| 09/23/1980 | CA1086221A1 Process for recovering oil from a subterranean reservoir by means of injection of steam |
| 09/23/1980 | CA1086046A1 Oil recovery by waterflooding employing an anionic- nonionic surfactant system |