| 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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| 10/20/1981 | US4295980 Waterflood method |
| 10/20/1981 | US4295979 Method and composition for inhibiting corrosion in high temperature, high pressure gas wells |
| 10/14/1981 | EP0037699A2 Polymer microemulsion complexes and their use for the enhanced recovery of oil |
| 10/13/1981 | USRE30767 Method using lignosulfonates for high-temperature plugging |
| 10/06/1981 | US4293440 Temperature gelation activated aqueous silicate mixtures and process of forming impermeable gels |
| 10/06/1981 | US4293428 Propoxylated ethoxylated surfactants and method of recovering oil therewith |
| 10/06/1981 | US4293427 (meth)acrylamide-(meth)acrylamidosulfonic acid copolymer optionally crosslinked |
| 10/06/1981 | US4293342 Lignosulfonate derivatives |
| 10/06/1981 | US4293036 Polyoxyalkylene glycol, phenolic resin |
| 09/29/1981 | US4292183 For well completion, packing, perforation media |
| 09/29/1981 | US4291766 Process for consolidating water-wet sands with an epoxy resin-forming solution |
| 09/29/1981 | US4291765 Enhanced oil recovery by injection of a polymer solution followed by a water-driven polymer-caustic mixture |
| 09/29/1981 | CA1109660A1 Liquid composition for consolidating unconsolidated or poorly consolidated particles in an underground formation and method for treating an underground formation part around a bore hole with said liquid composition |
| 09/29/1981 | CA1109659A1 Method for acidizing high temperature subterranean formations |
| 09/23/1981 | EP0036019A1 Well treating fluid |
| 09/22/1981 | US4291069 Rendering porous structures impermeable by treatment with gellable amine polymers |
| 09/22/1981 | US4290901 Demulsifier for inclusion in injected acidization systems for petroleum formation stimulation |
| 09/22/1981 | US4290900 Method and composition for removing elemental sulfur from high temperature, high pressure wells and flow lines |
| 09/22/1981 | US4290899 Polysaccharide solution containing dolomite |
| 09/22/1981 | US4290817 Reacting by-product ammonium ions with naphthalene formaldehyde sulfonate |
| 09/22/1981 | US4290485 Reduction of water production from hydrocarbon containing subsurface formations |
| 09/22/1981 | CA1109451A1 Salt stable lubricant for water base drilling fluids |
| 09/22/1981 | CA1109356A1 Gelled aqueous inorganic acid solutions and methods of using the same |
| 09/22/1981 | CA1109244A2 Treating subterranean well formations |
| 09/16/1981 | EP0035857A2 Annulus plugging |
| 09/15/1981 | US4289633 Nitrogen gas-generating reactants, reaction-retarding alkaline buffer, and ph-reducing reactant capable of overriding buffer |
| 09/15/1981 | US4289632 Diatomaceous earth and finely divided paper as suspending agent |
| 09/15/1981 | US4289631 Compositions and process for extension of the useful life of machine elements |
| 09/15/1981 | US4289203 Oil displacement method using shear-thickening compositions |
| 09/15/1981 | CA1108983A1 Modified lignosulfonates as additives in oil recovery processes involving chemical recovery agents |
| 09/08/1981 | US4288582 Aqueous drilling fluid additive, composition and process |
| 09/08/1981 | US4288334 Anionic sulfate or sulfonate surfactant, nonionic ethylene oxide-propylene oxide reaction product surfactant |
| 09/08/1981 | US4288333 Crown ethers |
| 09/08/1981 | US4288332 Methods and compositions for treating subterranean formations |
| 09/08/1981 | US4287951 Process for improving conformance and flow profiles in a subterranean sandstone formation |
| 09/08/1981 | US4287950 Gas pre-injection for chemically enhanced oil recovery |
| 09/01/1981 | US4287086 Viscous organic systems containing an organophilic clay gellant without an organic dispersant therefor |
| 09/01/1981 | US4286660 Process and installation for the flooding of petroleum deposits and oil shale |
| 09/01/1981 | CA1108190A1 Heteric/block polyoxyalkylene compounds as crude oil demulsifiers |
| 09/01/1981 | CA1107947A1 Retarding acidizing fluids |
| 08/25/1981 | US4285851 Process for controlled gelation of polymeric solution (C-974) |
| 08/25/1981 | CA1107750A1 Propoxylated ethoxylated surfactants and method of recovering oil therewith |
| 08/25/1981 | CA1107491A1 Well cementing in permafrost |
| 08/18/1981 | US4284517 Oil recovery by waterflooding employing anionic polymeric surfactants |
| 08/18/1981 | US4284140 Use of potassium hydroxide solutions in a well bore |
| 08/18/1981 | CA1107049A1 Waterflooding employing thickened aqueous liquids |
| 08/18/1981 | CA1107048A1 Methods of treating subterranean well formations |
| 08/11/1981 | US4283533 Amphotheric surfactant for use in oil wells |
| 08/11/1981 | US4283089 Injecting material capable of swelling coal |
| 08/11/1981 | US4282930 Process for the recovery of petroleum from subterranean formations |
| 08/11/1981 | US4282929 Method of controlling scale in oil recovery operations |
| 08/11/1981 | US4282928 Method for controlling permeability of subterranean formations |
| 08/11/1981 | CA1106724A1 Aqueous acid solution gelling agents |
| 08/11/1981 | CA1106587A1 Microemulsions usable for the recovery of petroleum from high temperature deposits containing water with a high salt content |
| 08/04/1981 | US4282343 Poly-(alpha-alkoxy)acrylamide and poly-(alpha-alkoxy)acrylamide complexes |
| 08/04/1981 | US4282130 Dissolving a water insoluble neutralized sulfonated polymer in an organic solvent system and adding water |
| 08/04/1981 | US4281714 Lithium chloride sacrificial agent |
| 08/04/1981 | CA1106162A1 Process for reducing water influx into gas or oil producing wells |
| 07/29/1981 | EP0032730A1 Glucoheptonate composition |
| 07/28/1981 | US4280915 Salt stable lubricant for water base drilling fluids |
| 07/28/1981 | US4280560 Potassium hydroxide clay stabilization process |
| 07/28/1981 | CA1105694A1 Surfactant waterflooding employing amphoteric sulfonium sulfonates |
| 07/28/1981 | CA1105693A1 Non-aqueous acid emulsion composition and method for acid-treating siliceous geological formations |
| 07/28/1981 | CA1105692A1 Acid composition and method for acid treating geological formations |
| 07/21/1981 | US4279305 Process for stimulating a well with a saline surfactant sulfate, alkanol and acid system |
| 07/21/1981 | CA1105375A1 Method for forming channels of high fluid conductivity in formation parts around a borehole |
| 07/21/1981 | CA1105348A1 Oil base fluids with organophilic clays having enhanced dispersibility |
| 07/15/1981 | EP0032072A1 Surfactant compositions useful in enhanced oil recovery processes |
| 07/14/1981 | US4278129 Stimulation of oil and gas wells with phosphate ester surfactants |
| 07/14/1981 | CA1104804A1 Asbestos composition having organo-silane coating |
| 07/14/1981 | CA1104803A1 Hydrocarbon plugging solution containing titanium dioxide |
| 07/07/1981 | US4277580 Terpolymer of N-vinyl pyrrolidone in alkoxylated form |
| 07/07/1981 | US4277351 Method for improving sulfonate surfactants used in enhanced recovery processing in subterranean oil-bearing formations |
| 07/07/1981 | US4276935 Treatment of subsurface gas-bearing formations to reduce water production therefrom |
| 07/07/1981 | US4276933 Aqueous postflush with a nonionic solubilizer |
| 06/30/1981 | US4276182 High temperature cement mud spacer |
| 06/30/1981 | US4276094 Cleaning oil-contaminated vessels with α-emulsans |
| 06/30/1981 | US4275789 In subterranean formations |
| 06/30/1981 | US4275788 Method of plugging a well |
| 06/24/1981 | EP0030753A2 Method of consolidating an underground formation |
| 06/24/1981 | EP0030537A1 Inhibiting corrosion in high temperature, high pressure gas wells |
| 06/23/1981 | US4274881 High temperature cement |
| 06/23/1981 | US4274488 Cosurfactant in preflush for surfactant flood system |
| 06/17/1981 | EP0030425A1 Method of inhibiting precipitation of salts from water dispersed in oil and compositions containing polymeric antiprecipitants |
| 06/17/1981 | EP0030238A1 Inhibiting corrosion in high temperature, high pressure gas wells |
| 06/16/1981 | US4273615 Anaerobic digestion, explosion |
| 06/16/1981 | US4273191 Simultaneous oil recovery and waste disposal process |
| 06/16/1981 | CA1103009A1 Well-treating process and aqueous solution for use in said process |
| 06/10/1981 | EP0029842A1 Removing elemental sulfur from high temperature, high pressure wells |
| 06/10/1981 | EP0029839A1 Removing elemental sulfur from high temperature, high pressure wells |
| 06/09/1981 | US4272384 Composition for preventing a resin system from setting up in a well bore |
| 06/09/1981 | US4271907 Microemulsions which compatibly incorporate viscosifiers and their use in enhanced oil recovery |
| 06/09/1981 | US4271906 Oil recovery method employing alternate slugs of surfactant and fresh water solution of sacrificial agent |
| 06/09/1981 | US4271905 Gaseous and solvent additives for steam injection for thermal recovery of bitumen from tar sands |
| 06/09/1981 | CA1102684A1 High vertical conformance steam drive oil recovery method |
| 06/09/1981 | CA1102683A1 High conformance oil recovery process |
| 06/09/1981 | CA1102682A1 Method of retarding degradation of surfactants employed in waterflooding |
| 06/09/1981 | CA1102656A1 Concentrate for the preparation of oil and water microemulsions having high salinity which are stable at high temperature |
| 06/09/1981 | CA1102541A1 Method of treating formation to remove ammonium ions |
| 06/09/1981 | CA1102540A1 Carbon dioxide foam flooding |