| 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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| 03/09/1982 | CA1119356A1 Method for removing elemental sulfur from high temperature, high pressure wells and flow lines |
| 03/03/1982 | EP0046671A2 Method of thickening heavy brine solutions |
| 03/02/1982 | US4317893 Oil recovery by waterflooding employing an anionic polymeric surfactant containing recurring succinimide or succinamide groups |
| 03/02/1982 | US4317735 Method of inhibiting crosslinking of aqueous xanthan gums in the presence of ferric acid ions |
| 03/02/1982 | US4317487 Method of recovering oil and other hydrocarbon values from subterranean formations |
| 03/02/1982 | CA1119092A1 Process for recovering hydrocarbon fluids from a subsurface formation |
| 03/02/1982 | CA1118963A1 Method and composition for removing elemental sulfur from high temperature, high pressure wells and flow lines |
| 02/23/1982 | US4316810 Gelled oil base compositions and methods of preparation and use of same |
| 02/23/1982 | US4316809 Hydrocarbon sulfonates, ethoxylated sulfates |
| 02/23/1982 | US4316808 Method for breaking petroleum emulsions and the like using micellar solutions of thin film spreading agents comprising an acylated polyether polyol |
| 02/23/1982 | US4316807 Reaction product of a silica or alumina hydrogel with an organosilicon compound |
| 02/23/1982 | US4316583 Demolition agent for brittle materials |
| 02/16/1982 | US4315545 Method of recovering petroleum from a subterranean reservoir incorporating an acylated polyether polyol |
| 02/16/1982 | CA1118340A1 Simultaneous microemulsion-aqueous phase flooding process |
| 02/16/1982 | CA1118329A1 Method of locating extrema in multicomponent three phase systems |
| 02/09/1982 | US4315087 Quaternary polyaminoamides |
| 02/09/1982 | CA1117987A1 Sintered high density spherical ceramic pellets for gas and oil well proppants and their process of manufacture |
| 02/09/1982 | CA1117752A1 Chemical waterflood process development |
| 02/05/1982 | EP0038817A4 Shear thickening well control fluid. |
| 02/05/1982 | EP0036019A4 Well treating fluid. |
| 02/02/1982 | US4313862 Process for gelation of polymeric solution (C-1042) |
| 02/02/1982 | US4313835 Emulsifier system for tertiary oil recovery |
| 02/02/1982 | US4313834 High viscosity acidic treating fluids and methods of forming and using the same |
| 02/02/1982 | US4313500 Sacrificial adsorbate for surfactants utilized in chemical floods of enhanced oil recovery operations |
| 01/27/1982 | EP0044508A2 High-molecular weight water-soluble polymers, their preparation and their use |
| 01/26/1982 | US4312765 Viscosifying agent |
| 01/26/1982 | US4312675 High concentration polymer slurries |
| 01/19/1982 | US4311832 Proemulsans |
| 01/19/1982 | US4311831 Apo-ψ-emulsans |
| 01/19/1982 | US4311830 Apo-α-emulsans |
| 01/19/1982 | US4311829 Apo-β-emulsans |
| 01/19/1982 | US4311662 Phosphorylated oxyalkylated polyols |
| 01/19/1982 | US4311600 Humate thinners for drilling fluids |
| 01/19/1982 | CA1116388A1 Gelled acid composition and well treating |
| 01/19/1982 | CA1116387A1 Gelled compositions and well treating |
| 01/13/1982 | EP0043495A1 Use of mixtures of betaines or aminoxides and esters of naphthenic acids with polyoxyethylene glycol for the recovery of petroleum |
| 01/12/1982 | US4310425 Time-released chlorine dioxide to alleviate the attack on carbohydrate additive |
| 01/12/1982 | CA1116075A1 Method of servicing wellbores |
| 01/12/1982 | CA1116074A1 Well treating process |
| 01/07/1982 | WO1982000044A1 Mobility control agent |
| 01/05/1982 | US4309523 Water-soluble copolymer of acrylamidomethylpropanesulfonic acids salts |
| 01/05/1982 | US4309329 Aqueous drilling fluid additive |
| 01/05/1982 | US4309306 Demulsifiers for water in oil emulsions; enhanced oil recovery |
| 01/05/1982 | CA1115693A1 Lignosulfonate derivatives |
| 12/30/1981 | EP0042678A1 Method of thickening |
| 12/29/1981 | US4308152 Injection water treatment to prevent compaction and permeability reduction in carbonate formations |
| 12/29/1981 | US4307980 Injection of a waterglass solution, polyisocyanate, and polyol, foaming, and hardening; adhesion |
| 12/29/1981 | US4307782 Polyoxyalkylene sulfate |
| 12/29/1981 | CA1115222A1 Use of fermented must for the recovery of crude oil |
| 12/22/1981 | US4306982 Method of increasing porosity and permeability of subsurface rock formations to increase efficiency of secondary hydrocarbon recovery operations |
| 12/22/1981 | US4306981 Method for breaking petroleum emulsions and the like comprising resinous polyalkylene oxide adducts |
| 12/22/1981 | US4306980 Invert emulsion well-servicing fluids |
| 12/22/1981 | CA1114739A1 Micellar crude oil displacement with partitioned hydrocarbon sulfonates |
| 12/22/1981 | CA1114737A1 Polyurethane ball sealers for well treatment fluid diversion |
| 12/15/1981 | US4305758 Hydraulic cement |
| 12/15/1981 | CA1114285A1 Well treatment with emulsion dispersions |
| 12/15/1981 | CA1114146A1 Method for sealing anchoring bars in mine shafts |
| 12/08/1981 | US4304690 Detergents |
| 12/08/1981 | US4304677 Injecting a high-density aqueous solution of calcium bromide and zinc bromide; oil and gas wells; hydrostatics |
| 12/08/1981 | US4304676 Injection of a mixture of mineral acid, a fluoride, and an aluminum salt; retardation; penetration |
| 12/08/1981 | US4304301 Process for improving conformance and flow profiles in a subterranean formation |
| 12/08/1981 | US4304300 Hydratable polymer blend spacer fluid |
| 12/08/1981 | US4304298 Well completion, gas generation |
| 12/08/1981 | CA1113875A1 Xanthomonas biopolymer for use in displacement of oil from partially depleted reservoirs |
| 12/01/1981 | CA1113513A1 Calcium sulphate hemihydrate plaster |
| 12/01/1981 | CA1113233A1 Polymer solutions for use in oil recovery |
| 11/25/1981 | EP0040445A1 Fluid displacement with heteropolysaccharide solutions, and the microbial production of heteropolysaccharides |
| 11/25/1981 | EP0040442A1 Method of treating wells with self-precipitating scale inhibitor |
| 11/24/1981 | US4302341 Gelled aqueous well treating fluids |
| 11/24/1981 | US4301868 Method using hydrocarbon foams as well stimulants |
| 11/24/1981 | US4301867 Injecting caustic solution containing amphoteric metal ion to precipitate insoluble silicates |
| 11/18/1981 | EP0039711A1 Amphoteric water-in-oil self-inverting polymer emulsion |
| 11/17/1981 | US4301016 Comprising an emulsion polymerized acrylic copolymer which increases viscosity with increased basicity |
| 11/17/1981 | US4300861 Method of using admixture of water-soluble polymers in latex form and gypsum as seepage control agents |
| 11/17/1981 | US4300860 Method of treating a subterranean formation to remove ammonium ions |
| 11/17/1981 | US4300635 Aqueous petroleum sulfonate mixture and method of use in post-primary oil recovery |
| 11/17/1981 | US4300634 Foamable compositions and formations treatment |
| 11/17/1981 | US4300633 Method of cementing wells with foam-containing cement |
| 11/17/1981 | US4300632 Conversion of formic acid to carbon dioxide and methane gas in methanobacterium culture |
| 11/17/1981 | CA1112781A1 Aqueous gels of alkyl acrylate-(heth) acrylic acid copolymers |
| 11/10/1981 | US4299711 Determination of degree of ethoxylation of anionic surfactant |
| 11/10/1981 | US4299710 Drilling fluid and method |
| 11/10/1981 | US4299709 Stabilized by an aromatic hydrocarbon |
| 11/10/1981 | US4299284 Pretreatment by injection of a diverter fluid containing a surfactant |
| 11/10/1981 | CA1112153A1 Method for increasing the productivity of a well penetrating an underground formation |
| 11/10/1981 | CA1112035A1 Breaker system for high viscosity fluids |
| 11/04/1981 | EP0038817A1 Shear thickening well control fluid. |
| 11/03/1981 | US4298708 Salt of pyrrolidonecarboxylic acid |
| 11/03/1981 | US4298491 Inhibition of autooxidation by use of charge transfer agent |
| 11/03/1981 | US4298479 Secondary recovery process utilizing thickened water |
| 11/03/1981 | CA1111632A1 Dissolving barium sulphate scale |
| 10/27/1981 | US4297469 Bipolymer of vinyl sulfonic acid-glycidol adduct and acrylamide |
| 10/27/1981 | US4297226 Process for secondary recovery |
| 10/27/1981 | US4296813 Using a lignosulfonate to retard the hardening of hydraulic cements |
| 10/27/1981 | US4296812 Surfacant waterflooding oil recovery method |
| 10/27/1981 | US4296811 Preferential plugging of an injection well using water, a petroleum sulfonate, sodium chloride, a cosurfactant, and oil |
| 10/27/1981 | CA1111343A1 Selecting salinities in micellar flooding |
| 10/27/1981 | CA1111237A1 Chrome lignosulfonates as additives in oil recovery process involving chemical recovery agents |
| 10/21/1981 | EP0037996A1 Process for the manufacture of amine oxides, and their use as surface active agents |
| 10/20/1981 | US4296203 Xanthomonas bipolymer for use in displacement of oil from partially depleted reservoirs |