| Patents for E21B 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells (64,186) |
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| 09/10/1985 | CA1193345A1 Pump jack control apparatus |
| 09/10/1985 | CA1193204A1 Process for displacing dissolved gas from water |
| 09/10/1985 | CA1193186A1 Method of increasing the yield of hydrocarbons from a subterranean formation |
| 09/10/1985 | CA1193185A1 Thermally stimulating well production |
| 09/10/1985 | CA1193184A1 Multiple level methane drainage shaft system |
| 09/03/1985 | US4539023 Ceramic extractor or stainless steel |
| 09/03/1985 | US4538680 Gun below packer completion tool string |
| 09/03/1985 | CA1192836A1 Ball type shut in tool |
| 09/02/1985 | EP0151604A4 Oil recovery systems. |
| 08/29/1985 | WO1985003697A1 Process for clarifying bicarbonate bearing waters using measurement and control of carbon dioxide content |
| 08/28/1985 | EP0152762A2 Process for improved oil recovery from subterranean oil formations |
| 08/28/1985 | EP0152683A2 Pulling head for removably engaging a conduit end |
| 08/28/1985 | EP0046800B1 Riser angle positioning system and process |
| 08/27/1985 | US4537603 Cyclic char gasifier devolatilization process |
| 08/27/1985 | US4537533 Installation and levelling of subsea templates |
| 08/27/1985 | US4537257 Method for isolating a well casing |
| 08/27/1985 | US4537256 Sonic fracing process and means to carry out said process |
| 08/27/1985 | US4537254 Steam injection well gravel pack material of sintered bauxite |
| 08/27/1985 | US4537252 Circulating hot synthesis gas from coal combustion of liquefactionand gasification by pyrolysis |
| 08/27/1985 | CA1192487A1 Thermal oil recovery with solvent recirculation |
| 08/27/1985 | CA1192486A1 Method and apparatus for recovering heavy oil |
| 08/27/1985 | CA1192485A1 Solvent flooding to recover viscous oil |
| 08/21/1985 | EP0151604A1 Oil recovery systems |
| 08/20/1985 | US4536304 Quaternary ammonium-containing perfluorinated polyether |
| 08/20/1985 | US4536035 Hydraulic mining method |
| 08/20/1985 | US4536034 Froming insoluble phosphate precipitates |
| 08/20/1985 | US4535915 Polymerizing from center to edge |
| 08/20/1985 | US4535845 Method for producing viscous hydrocarbons from discrete segments of a subterranean layer |
| 08/20/1985 | US4535844 Extraction of energy by lowering fluid pressure and using it to control polymer flow |
| 08/20/1985 | CA1192128A1 Well flow control apparatus |
| 08/20/1985 | CA1192127A1 Method of assisting surface lift of heated subsurface viscous petroleum |
| 08/20/1985 | CA1192052A1 Anchoring device for submerged pipelines |
| 08/15/1985 | WO1985003544A1 A submersible liquid/gas separator apparatus |
| 08/14/1985 | EP0151193A2 Screen |
| 08/13/1985 | US4534869 Portable water filtration system for oil well fractionation |
| 08/13/1985 | US4534423 Perforating gun carrier and method of making |
| 08/13/1985 | US4534413 Method and apparatus for water flow stimulation in a well |
| 08/13/1985 | US4534411 Surfactants having alpha-olefin sulfonate and ethoxylated polyoxyethylene alkyl ethers |
| 08/13/1985 | CA1191836A1 Apparatus for extending and retracting telescoping booms and pipelines |
| 08/13/1985 | CA1191784A1 Universal liner hanger apparatus |
| 08/13/1985 | CA1191744A1 Conduct pipe covered with electrically insulating material |
| 08/13/1985 | CA1191676A1 Method for achieving acceptable u.sub.30.sub.8 levels in a restored formation |
| 08/06/1985 | US4533526 Collecting geothermal fluid and concentrating |
| 08/06/1985 | US4533478 Injecting slues for enhanced oil recovery;surfactants |
| 08/06/1985 | US4533374 Method for reducing air pollution |
| 08/06/1985 | US4533182 Process for production of oil and gas through horizontal drainholes from underground workings |
| 08/06/1985 | US4533181 Method for forming uniform flow rubble bed |
| 08/06/1985 | US4533084 Method for comminuting bituminous coal using an aqueous methanol solution |
| 08/06/1985 | US4532994 Well with sand control and stimulant deflector |
| 08/06/1985 | US4532993 Selective steam foam soak oil recovery process |
| 08/06/1985 | US4532992 Method for recovering petroleum |
| 08/06/1985 | US4532991 In situ subterranean retorts |
| 08/06/1985 | US4532990 Isolation of an electrical power transmission well |
| 08/06/1985 | US4532986 Bitumen production and substrate stimulation with flow diverter means |
| 08/06/1985 | US4532952 Controller for well installations |
| 08/06/1985 | CA1191450A1 Selected well completion for improving vertical conformance of steam drive process |
| 08/06/1985 | CA1191449A1 Foam gravel packing |
| 08/06/1985 | CA1191448A1 Tool and method for gravel packing a well |
| 08/06/1985 | CA1191406A1 Method for sub-terranean generation for heat as a source of energy |
| 08/01/1985 | WO1985003327A1 Particulate ceramic useful as a proppant |
| 07/31/1985 | EP0150112A2 Fracturing method for stmulation of wells |
| 07/30/1985 | US4532053 Micellar slug for oil recovery |
| 07/30/1985 | US4531891 Fluid bypass control for producing well plunger assembly |
| 07/30/1985 | US4531860 Deep sea oil salvage means |
| 07/30/1985 | US4531783 Stability control in underground workings adjacent an in situ oil shale retort |
| 07/30/1985 | US4531593 Substantially self-powered fluid turbines |
| 07/30/1985 | US4531590 Fluid pressure actuated perforating gun |
| 07/30/1985 | US4531586 Method of solvent stimulation of heavy oil reservoirs |
| 07/30/1985 | US4531584 Downhole oil/gas separator and method of separating oil and gas downhole |
| 07/30/1985 | US4531583 Cement placement methods |
| 07/30/1985 | CA1191020A1 Hydraulic fracturing propping agent |
| 07/24/1985 | EP0149173A1 Tributylphenolether-glycidyl-sulphonates, process for their preparation and their use |
| 07/24/1985 | EP0148921A1 Methods and apparatus for recovery of hydrocarbons from underground water tables |
| 07/23/1985 | US4530645 Oil well pumping apparatus |
| 07/23/1985 | US4530401 Method for maximum in-situ visbreaking of heavy oil |
| 07/23/1985 | US4530396 Device for stimulating a subterranean formation |
| 07/23/1985 | CA1190850A1 Corrosion inhibiting process for a remotely located deep corrosive gas well |
| 07/23/1985 | CA1190849A1 Gas anchor |
| 07/23/1985 | CA1190749A1 Hydrogen peroxide in sulfuric acid extraction of uranium ores |
| 07/18/1985 | WO1985003066A1 Process and apparatus for purification of contaminated groundwater |
| 07/16/1985 | US4529414 Method and apparatus for separation and separate flow of gas and liquid in a flow system |
| 07/16/1985 | US4529038 Differential vent and bar actuated circulating valve and method |
| 07/16/1985 | US4529037 Method of forming carbon dioxide mixtures miscible with formation crude oils |
| 07/16/1985 | US4529036 Method of determining subterranean formation fracture orientation |
| 07/16/1985 | US4529035 Well completion |
| 07/16/1985 | US4528910 Apparatus for cutting a submerged tube by means of a pyrotechnic charge |
| 07/09/1985 | US4528105 Micelle solution compositions for recovering crude oil |
| 07/09/1985 | US4527928 Protective riser-conductor for offshore structures |
| 07/09/1985 | US4527836 Deep well process for slurry pick-up in hydraulic borehole mining devices |
| 07/09/1985 | US4527639 Hydraulic piston-effect method and apparatus for forming a bore hole |
| 07/09/1985 | US4527636 Single-wire selective perforation system having firing safeguards |
| 07/09/1985 | US4527633 Methods and apparatus for recovery of hydrocarbons from underground water tables |
| 07/09/1985 | US4527632 System for increasing the recovery of product fluids from underwater marine deposits |
| 07/09/1985 | US4527628 Method of temporarily plugging portions of a subterranean formation using a diverting agent |
| 07/09/1985 | US4527627 Method of acidizing propped fractures |
| 07/09/1985 | CA1190244A1 Branched alkoxypolyethoxypropane sulfonates and their use in enhanced oil recovery |
| 07/09/1985 | CA1190033A1 Chemically-aided gas cap drive |
| 07/04/1985 | WO1985002782A1 Fluid/fluid separators |
| 07/03/1985 | EP0147215A2 Fluid/fluid separator |
| 07/03/1985 | EP0146981A1 Novel applications of scleroglucane in the treatment of oil wells and oil drilling installations |