| 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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| 02/03/1987 | US4640356 Using hot water or steam flooding |
| 02/03/1987 | CA1217589A1 Crosslinking composition and method of preparation |
| 02/03/1987 | CA1217510A1 Method of preparing a light weight cement composition from sea water |
| 02/03/1987 | CA1217509A1 Lightweight composition and a method of sealing a subterranean formation |
| 02/03/1987 | CA1217418A1 Magnetized drive fluids |
| 02/03/1987 | CA1217331A1 Use of certain materials as thinners in oil based drilling fluids |
| 02/03/1987 | CA1217330A1 Method of temporarily plugging portions of a subterranean formation using a diverting agent |
| 02/03/1987 | CA1217329A1 Method and compositions for fracturing subterranean formations |
| 02/03/1987 | CA1217328A1 Method of minimizing fines migration in a subterranean formation |
| 02/03/1987 | CA1217327A1 Fluid loss additive |
| 02/03/1987 | CA1217326A1 Thixotropic cements for combating gas migration problems |
| 02/03/1987 | CA1217325A1 Thixotropic cements for combating lost circulation problems |
| 02/03/1987 | CA1217323A1 Well cementing process and gasified cement useful therein |
| 02/03/1987 | CA1217322A1 Method of preventing loss of an oil base drilling fluid during the drilling of an oil or gas well into a subterranean formation |
| 02/03/1987 | CA1217321A1 Foaming agent |
| 02/03/1987 | CA1217319A1 Low density proppant |
| 02/03/1987 | CA1217318A1 Environmentally compatible high density drill mud or blow-out control fluid |
| 01/27/1987 | US4639427 Stress-corrosion resistant proppant for oil and gas wells |
| 01/27/1987 | US4639322 Methylene thiocyanate |
| 01/27/1987 | US4638865 Thickeners in oil recovery waterflooding operations |
| 01/27/1987 | US4638861 Gamma-radiation as a bactericide |
| 01/27/1987 | CA1217130A1 Method for treating a well for the removal of scale and to inhibit future scale formation so that a step decline in the production rate from the well is avoided |
| 01/27/1987 | CA1217039A1 Fluid loss additive for cement |
| 01/27/1987 | CA1217038A1 Cement compositions for cementing wells, allowing pressure gas-channeling in the cemented annulus to be controlled |
| 01/21/1987 | EP0209277A1 Heteropolysaccharide and its production and use |
| 01/21/1987 | CN86104449A Heteropolysaccharide s-657 |
| 01/20/1987 | US4637883 Ammonium salt of quebracho |
| 01/20/1987 | US4637882 Polyampholytes - high temperature viscosifiers for high ionic strength drilling fluids |
| 01/20/1987 | US4637467 Permeability contrast correction |
| 01/20/1987 | US4637466 With noncondensible gas, decrease permeability in steam swept zones |
| 01/20/1987 | CA1216860A1 Sulfonated tributylphenol ethoxylates, their use, and a process for preparing sulfonated alkoxylates |
| 01/20/1987 | CA1216748A1 Well treating process and composition |
| 01/20/1987 | CA1216746A1 Method for removing and/or retarding paraffin buildup on surfaces in contact with crude oil or natural gas containing such paraffin |
| 01/20/1987 | CA1216745A1 Recovering oil by injecting aqueous alkali, cosurfactant and gas |
| 01/20/1987 | CA1216743A1 Treating wells with ion-exchange-precipitated scale inhibitor |
| 01/15/1987 | WO1987000236A1 Crosslinked fracturing fluids |
| 01/15/1987 | DE3524952A1 Process for the preparation of a water-in-oil emulsion of a polymer |
| 01/14/1987 | EP0208373A2 Stabilized fracture fluid and crosslinker therefor |
| 01/14/1987 | EP0208041A2 Dispersant containing composition |
| 01/14/1987 | CN86105259A Process for the preparation of micro inorganic foamed granules |
| 01/13/1987 | US4636572 Permeability contrast correction employing propionate-sequestered chromium(III) prepared by nitrite/dichromate redox |
| 01/13/1987 | US4635727 Method of fracturing a subterranean formation |
| 01/13/1987 | US4635724 CO2 -enhanced hydrocarbon recovery with corrosion-resistant cement |
| 01/13/1987 | US4635722 Method of increasing enhanced oil recovery by using a higher sulfonate phase obtained on polymer addition |
| 01/13/1987 | CA1216417A1 Compositions of polymer systems, and their use for example in hydraulic fracturing |
| 01/10/1987 | CN85101104A Preparation of sulphonates of glycidyl tributyl phenoxy ether and uses theseof |
| 01/07/1987 | EP0207811A2 Mixed metal hydroxides for thickening water or hydrophylic fluids |
| 01/07/1987 | EP0207810A2 Mixed metal layered hydroxide-clay adducts as thickeners for water and other hydrophylic fluids |
| 01/07/1987 | EP0207668A1 Ceramic spheroids having low density and high crush resistance |
| 01/07/1987 | EP0207536A1 An aqueous spacer composition compatible with drilling muds and cement slurries including saline slurries and application thereof to drilling oil and gas wells |
| 01/07/1987 | EP0207427A2 Improved stress-corrosion resistant proppant for oil and gas wells |
| 01/07/1987 | EP0207312A2 Method for the recovery of oil from underground formations |
| 01/07/1987 | EP0207220A2 Process for preparing a stabilized chromium(III) propionate solution and its use in formation treatment |
| 01/06/1987 | US4634667 Agrobacterium fermentation |
| 01/06/1987 | US4634540 Composition and method for modifying and augmenting recovery of hydrocarbons from hydrocarbon-bearing formations |
| 01/06/1987 | US4634539 Oxygen-reactive sulfite and/or bisufite with iron oxide as catalyst |
| 01/06/1987 | US4634538 Xanthan and other water-soluble gum as anticoagulants |
| 01/06/1987 | US4633950 Method for controlling lost circulation of drilling fluids with hydrocarbon absorbent polymers |
| 01/06/1987 | US4633949 Method of preventing precipitation of ferrous sulfide and sulfur during acidizing |
| 01/06/1987 | US4633947 Production of a polyacrylamide solution used in an oil recovery process |
| 01/06/1987 | CA1216286A1 Thermal stabilisation process for aqueous solutions of polysaccharides, and their use in boring fluids |
| 01/06/1987 | CA1216150A1 Pour point depressants for paraffin solutions |
| 12/30/1986 | US4632876 Mineral core with aluminum or magnesium oxide shell |
| 12/30/1986 | US4632786 Sulfomethylated phenolic material useful in post primary oil recovery |
| 12/30/1986 | US4632186 Well cementing method using an AM/AMPS fluid loss additive blend |
| 12/30/1986 | US4632185 Polymerflood process |
| 12/30/1986 | EP0206723A2 Aqueous sulfomethylated melamine gel-forming compositions |
| 12/30/1986 | EP0206678A1 Preparation of surfactants |
| 12/30/1986 | EP0206489A2 Calcium-Tolerant N-Substituted Acrylamides as Thickeners for aqueous Systems |
| 12/30/1986 | EP0206168A2 Stabilized aqueous solutions and/or dispersions of polymers, their preparation and use |
| 12/23/1986 | US4631309 Shaped articles for use in the exploration for and/or production of petroleum and natural gas |
| 12/23/1986 | US4631138 Corrosion inhibitors |
| 12/23/1986 | US4631137 Bentonite mixed with addition polymers |
| 12/23/1986 | US4631136 Non-polluting non-toxic drilling fluid compositions and method of preparation |
| 12/23/1986 | US4630679 Method for treatment and/or workover of injection wells |
| 12/23/1986 | US4630678 In-situ formation of polyvalent metal ions for crosslinking polymers within carbonate rock-containing reservoirs |
| 12/23/1986 | CA1215641A1 Miscible flooding with displacing fluid containing additive compositions |
| 12/23/1986 | CA1215640A1 Pneumatic transfer of solids into wells |
| 12/17/1986 | EP0205335A2 Titanium-glycol useful as crosslinking agents for polygalactomannans |
| 12/16/1986 | US4629747 Includes crosslinkable water soluble polymer |
| 12/16/1986 | US4629575 Well drilling and production fluids employing parenchymal cell cellulose |
| 12/16/1986 | US4629573 Use of low M.S. hydroxyethyl cellulose for fluid loss control in oil well applications |
| 12/16/1986 | US4629000 Oil recovery by surfactant-alcohol waterflooding |
| 12/16/1986 | CA1215302A1 Hydrochloric acid compositions and their use |
| 12/10/1986 | EP0204370A1 Foamable hydraulic cement compositions and methods of using same |
| 12/10/1986 | EP0204358A2 Process for the preparation of an aqueous solution of a heteropolysaccharide |
| 12/09/1986 | USRE32302 Fracturing method for stimulation of wells utilizing carbon dioxide based fluids |
| 12/09/1986 | US4627926 Thermally stable borehole fluids |
| 12/09/1986 | US4627494 Method of using a lignosulfonate/carbohydrate system as a sacrificial agent for surfactant flooding |
| 12/09/1986 | CA1214987A1 Process for improving waterflood performance in heterogeneous clay-sensitive formations |
| 12/03/1986 | EP0203517A2 Sulfonated asphalt/causticized lignite blend |
| 12/02/1986 | US4626363 Cationic acrylamide emulsion polymer brine thickeners |
| 12/02/1986 | US4626362 Additive systems for control of fluid loss in aqueous drilling fluids at high temperatures |
| 12/02/1986 | US4626285 Fluid loss control in oil field cements |
| 11/26/1986 | EP0202995A1 Dispersing agents for drilling fluids, and drilling fluids containing them |
| 11/26/1986 | EP0202940A2 Use and preparation of a viscosifier and compositions containing the same |
| 11/26/1986 | EP0202935A2 Oil reservoir permeability control using polymeric gels |
| 11/25/1986 | US4624795 2-acrylamido-2-methyl-1-propanesulfonic acid-acrylamide-vinylphosphonic acid interpolymer |
| 11/25/1986 | US4624314 Modified waterflood technique for enhanced hydrocarbon recovery from argillaceous subterranean reservoirs |
| 11/19/1986 | CN86102915A Disperser for well-drilling fluid and well-drilling fluid containing disperser |