| 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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| 07/07/1987 | US4678032 Polymer and method for permeability profile control under severe reservoir conditions |
| 07/07/1987 | CA1223721A1 Intramolecular polymer complexes - viscosifiers for high ionic strength drilling fluids |
| 07/02/1987 | WO1987003898A1 Water-based metal-containing organic phosphate compositions |
| 07/01/1987 | CN86107208A Improved multiple-stage coal seam fracing method |
| 06/30/1987 | US4677201 Titanium-glycol useful as crosslinking agents for polygalactomannans |
| 06/30/1987 | US4676930 Zirconium crosslinked gel compositions, methods of preparation and application in enhanced oil recovery |
| 06/30/1987 | US4676916 Acidizing concentrates for oil well acidizing systems |
| 06/30/1987 | US4676834 Novel compositions prepared from methyl substituted nitrogen-containing aromatic heterocyclic compounds and an aldehyde or ketone |
| 06/30/1987 | US4676832 Hydratable gel forming materials, methylene phosphonic acids |
| 06/30/1987 | US4676318 Method of reducing permeability in subterranean formation by use of alkali metal silicate foam |
| 06/30/1987 | US4676317 Method of reducing fluid loss in cement compositions which may contain substantial salt concentrations |
| 06/30/1987 | US4676316 Method and composition for oil recovery by gas flooding |
| 06/30/1987 | US4676315 Method for concentrating surfactant from a brine solution |
| 06/24/1987 | EP0226097A2 Hydrophobe associative composition containing a polymer of a water-soluble monomer and an amphiphilic monomer |
| 06/24/1987 | EP0225873A1 Crosslinked fracturing fluids. |
| 06/23/1987 | US4675348 Turbulent flow, enhanced oil recovery |
| 06/23/1987 | US4675120 Methods of using strong acids modified with acid solutions |
| 06/23/1987 | US4675119 Acrylamido-2-methylpropanesulfonic acid2-1 and acrylic acid copolymers and salts thereof |
| 06/23/1987 | US4674574 Fluid loss agents for oil well cementing composition |
| 06/23/1987 | US4674572 Corrosion and erosion-resistant wellhousing |
| 06/23/1987 | CA1223224A1 Process for preparing xanthomonas heteropolysaccharide, heteropolysaccharide as prepared by the latter process and its use |
| 06/18/1987 | WO1987003613A2 Water-in-oil emulsions |
| 06/16/1987 | US4673721 Polyacrylonitriles with a low K value |
| 06/16/1987 | US4673040 Permeability restoration of damaged formations |
| 06/16/1987 | US4673038 Injecting polyvinyl alcohol plymers and aldehyde or acetal crosslinkining materials |
| 06/16/1987 | EP0225661A2 Gelling organic liquids |
| 06/16/1987 | CA1223014A1 Matrix control cementing slurry |
| 06/16/1987 | CA1222942A1 Multiple-stage coal seam fracturing method |
| 06/10/1987 | EP0224474A1 Water soluble perforation pack. |
| 06/09/1987 | US4671883 Fluid loss control additives for oil-based well-working fluids |
| 06/03/1987 | EP0224346A2 Scale removal treatment in subterranean formations |
| 06/03/1987 | EP0224298A2 Novel ferrofluids for use in cementing wells |
| 06/02/1987 | US4670550 Polysaccharide-containing water in oil emulsion |
| 06/02/1987 | US4670501 Drilling fluids |
| 06/02/1987 | US4670186 Acid inhibitor composition |
| 06/02/1987 | US4670167 Biopolymer formulations and processes for preparing them |
| 06/02/1987 | US4670166 Leaching or water soluble reagent from polymer matrix |
| 06/02/1987 | US4670165 Enhanced oil recovery;polymerizing monomers with free radical |
| 06/02/1987 | US4670164 Liquid polymer containing compositions for thickening aqueous systems |
| 06/02/1987 | US4670163 Inhibiting corrosion |
| 06/02/1987 | US4670056 Material for sealing borehole walls |
| 06/02/1987 | US4669919 Process for consolidation and sealing coal and/or rock, soil and brick formations in mining, tunnelling and construction |
| 06/02/1987 | US4669545 Well acidization with alpha-hydroxysulfonic acid |
| 06/02/1987 | US4669544 Reducing paraffin deposits on paraffin contaminated surfaces |
| 06/02/1987 | US4669543 Methods and compositions for consolidating solids in subterranean zones |
| 05/26/1987 | US4668645 Sintered low density gas and oil well proppants from a low cost unblended clay material of selected composition |
| 05/26/1987 | US4668408 Composition and method for treatment of wellbores and well formations containing paraffin |
| 05/26/1987 | US4668128 Curing cement, hydrophilic powder; and aggregated residues from well drilling |
| 05/26/1987 | US4667741 Enhanced oil recovery |
| 05/26/1987 | US4667740 Surfactant flooding system |
| 05/26/1987 | CA1222136A1 Method and composition for acidizing subterranean formation |
| 05/20/1987 | EP0222615A2 Reduction of viscosity of aqueous fluids |
| 05/19/1987 | US4666957 Gel for retarding water flow |
| 05/19/1987 | US4666955 Block copolymers for enhanced oil recovery |
| 05/19/1987 | US4666613 Process and agents for controlling the swelling of clays in the presence of sea-water and clay-based muds |
| 05/19/1987 | US4665990 Multiple-stage coal seam fracing method |
| 05/19/1987 | US4665988 Method of preparation of variable permeability fill material for use in subterranean formations |
| 05/19/1987 | US4665987 Flow control agents, crude oils |
| 05/19/1987 | US4665986 Gel and method for reducing steam channeling |
| 05/19/1987 | US4665985 Reversible plugging of oil bearing formations |
| 05/19/1987 | US4665982 Formation fracturing technique using liquid proppant carrier followed by foam |
| 05/19/1987 | CA1221822A1 Fracturing fluid breaker system which is activated by fracture closure |
| 05/13/1987 | EP0221142A1 Stability and compatibility of glycosides in acid systems |
| 05/13/1987 | CN86105873A Method to produce homopolymer and copolymer with monomer containing amid sulfonic acid (or salt) |
| 05/12/1987 | US4665196 Diallyl compound and bisulfite |
| 05/12/1987 | US4664843 Ion exchanging; drilling muds |
| 05/12/1987 | US4664819 Proppant charge and method |
| 05/12/1987 | US4664818 Stabilization of bore holes through water-sensitive shales |
| 05/12/1987 | US4664816 Sealing porosity in well bores |
| 05/12/1987 | US4664713 Enhanced oil recovery |
| 05/12/1987 | US4664563 Rigid polyurethane foams with constant or slightly decreasing strain with an increasing stress in compression |
| 05/12/1987 | US4664194 Gel for retarding water flow |
| 05/12/1987 | US4664193 Composition and method for corrosion inhibition |
| 05/12/1987 | CA1221792A1 Terpolymers for use as high temperature fluid loss additive and rheology stabilizer for high pressure, high temperature oil well drilling fluids |
| 05/12/1987 | CA1221621A1 Staged preformed-surfactant-optimized aqueous alkaline flood |
| 05/12/1987 | CA1221620A1 Stimulation of oil and gas wells with phosphate ester surfactants |
| 05/07/1987 | WO1987002692A1 Additives for controlling or modifying rheological properties |
| 05/06/1987 | EP0220278A1 Method for inhibiting oxidation or acid attack of ferrous metals utilizing glycosides and cleaning compositions for ferrous metals |
| 05/05/1987 | US4663408 Tetrapolymers of N-vinyl pyrrolidone/acrylamide/salt of acrylic acid/N-alkyl acrylamide |
| 05/05/1987 | US4663385 Process for thickening with copolymers of alkyl poly (oxyalkylene) itaconic di-esters |
| 05/05/1987 | US4663367 Compositions and methods for reducing the permeability of underground strata |
| 05/05/1987 | US4663366 Shear thickening composition with polycarboxylic acid |
| 05/05/1987 | US4663124 Reaction product of hydrogen sulfide with the reaction product of a dione and a primary polyamine |
| 05/05/1987 | US4663076 Surfactant |
| 05/05/1987 | US4663069 Light-duty liquid detergent and shampoo compositions |
| 05/05/1987 | US4663059 Composition and method for reducing sludging during the acidizing of formations containing sludging crude oils |
| 05/05/1987 | US4662943 Cement compositions containing a polysaccharide and a salt and method of cementing casing in a well |
| 05/05/1987 | US4662449 Method for controlling bottom water coning in a producing oil well |
| 05/05/1987 | US4662448 Well treatment method using sodium silicate to seal formation |
| 05/05/1987 | US4662445 Gradients |
| 05/05/1987 | US4662444 Process for reducing polymer plugging during polymer injection into oil reservoir |
| 04/28/1987 | US4661266 Hydroxyethyl cellulose; calcium chloride, bromide or zinc bromide; heterocyclic thiols, thioamides, thiuram sulfides, dithiocarbamates, benzothiazole or copper-iodine compound combination |
| 04/28/1987 | US4660645 Method for controlled introduction of reagent into a liquid |
| 04/28/1987 | US4660642 High strength, chemical resistant particulate solids and methods of forming and using the same |
| 04/28/1987 | US4660640 Enhanced oil recovery |
| 04/28/1987 | CA1220929A1 Sodium styrene sulfonate-co-sodium-n-(4-sulfophenyl)- maleimide - an improved viscosity control additive |
| 04/23/1987 | WO1987002410A1 Multiple-stage coal seam fracing method |
| 04/22/1987 | EP0219189A2 Flexible grout composition and method |
| 04/22/1987 | CN86104614A Mixed metal layered hydroxide-clay adducts as thickeners for water and other hydrophylic fluids |
| 04/21/1987 | US4659811 Alkaline refined gum and use thereof in improved well-treating compositions |