| 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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| 02/05/1985 | CA1182039A1 Remote alignment method and apparatus |
| 01/31/1985 | WO1985000401A1 Methods and apparatus for recovery of hydrocarbons from underground water tables |
| 01/30/1985 | EP0132423A1 Borehole logging and work-over method and apparatus |
| 01/30/1985 | EP0132330A2 Tubing conveyed well perforating system |
| 01/29/1985 | US4496010 Single-wire selective performation system |
| 01/29/1985 | US4496009 Through the tubing perforating gun assembly |
| 01/29/1985 | US4496008 Well perforating apparatus |
| 01/29/1985 | US4496000 Method of and apparatus for setting a mechanical liner hanger by right-hand rotation |
| 01/29/1985 | US4495995 Using high density foams prepared from surfactants and carbon dioxide |
| 01/29/1985 | US4495994 Thermal injection and in situ combustion process for heavy oils |
| 01/29/1985 | US4495993 Method for in-situ recovery of energy raw materials by the introduction of cryogenic liquid containing oxygen |
| 01/29/1985 | US4495991 Procedure for drawing water from a ground water store |
| 01/29/1985 | US4495990 Apparatus for passing electrical current through an underground formation |
| 01/29/1985 | CA1181706A1 Ex situ and in situ separation of bitumen from bitumen-bearing substrate |
| 01/22/1985 | US4495287 Process for producing gene products of plasmid having temperature dependent plasmid copy number |
| 01/22/1985 | US4494608 Well injection system |
| 01/22/1985 | US4494605 Solidifying and binding sand in an oil well with precipitated asphalt or bitumen |
| 01/22/1985 | US4494603 Wire mesh well screen with welded wire support |
| 01/22/1985 | US4494318 Apparatus and method for manufacturing cured resin-coated particles for use as a proppant |
| 01/16/1985 | EP0131499A1 Method for the oxidation of hydrocarbonaceous subterranean sedimentary formations |
| 01/15/1985 | US4493875 Mixing core particles with adhesives then hollow microparticles, then curing |
| 01/15/1985 | US4493369 Method of improved oil recovery by simultaneous injection of water with an in-situ combustion process |
| 01/15/1985 | CA1180998A1 Method for recovering petroleum |
| 01/08/1985 | CA1180594A1 Moineau pump |
| 01/02/1985 | EP0130066A2 Method and system for producing natural gas from offshore wells |
| 01/02/1985 | CA1180266A Foam and particulate material with steam for permeability alteration in subsurface formations |
| 01/01/1985 | US4491367 Method for subterranean generation of heat as a source of energy |
| 01/01/1985 | US4491185 Method and apparatus for perforating subsurface earth formations |
| 01/01/1985 | US4491180 Tapered steam injection process |
| 01/01/1985 | US4491179 Method for oil recovery by in situ exfoliation drive |
| 12/27/1984 | EP0129350A2 Method and apparatus for detecting firing of perforating gun |
| 12/27/1984 | CA1179938A Dome-type packoff wellhead |
| 12/27/1984 | CA1179937A Concentric steaming string downhole apparatus |
| 12/25/1984 | US4490262 High density fluid containing calcium and zinc bromide |
| 12/25/1984 | US4490073 Multiple flowline connector |
| 12/25/1984 | US4489984 In-situ uranium leaching process |
| 12/25/1984 | US4489983 Blasthole spacing for control of particle size |
| 12/25/1984 | US4489783 Viscous oil recovery method |
| 12/25/1984 | US4489782 Viscous oil production using electrical current heating and lateral drain holes |
| 12/25/1984 | US4489781 Setting tool and right-hand set mechanical liner hanger |
| 12/25/1984 | US4489779 For withdrawing groundwater samples from a monitoring well |
| 12/25/1984 | US4489743 For controlling flow of gas into a well flow |
| 12/25/1984 | US4489472 Connection-disconnection device between one rigid pipe, inside well-tubing connected to a base by an articulated coupling, and another rigid pipe fixed to this base |
| 12/20/1984 | WO1984004942A1 A method for removal of water from drill holes during deep drilling and a device for performing the method |
| 12/18/1984 | US4489042 Uranium ore, solubilizing pyrites |
| 12/18/1984 | US4488976 Olefin sulfonate-improved steam foam drive |
| 12/18/1984 | US4488601 Control of aluminum cross-linked polyacrylamides for sweep improvement |
| 12/18/1984 | US4488600 Recovery of heavy oil by steam flooding combined with a nitrogen drive |
| 12/18/1984 | US4488599 Method of controlling displacement of propping agent in fracturing treatments |
| 12/18/1984 | US4488598 Steam, noncondensable gas and foam for steam and distillation drive _in subsurface petroleum production |
| 12/18/1984 | US4488597 For use with a well-logging tool |
| 12/18/1984 | CA1179621A1 Compound and process for the production and enrichment of petroleum products |
| 12/18/1984 | CA1179596A1 Geothermal wellhead packing assembly |
| 12/11/1984 | US4487837 Radiation method for determining brine tolerant surfactants in complex mixtures |
| 12/11/1984 | US4487835 Plasmid having temperature dependent plasmid copy number |
| 12/11/1984 | US4487264 Use of hydrogen-free carbon monoxide with steam in recovery of heavy oil at low temperatures |
| 12/11/1984 | US4487262 Silica, sodium hydroxide, sodium bicarbonate, sodium silicate, carbon dioxide, viscosity |
| 12/11/1984 | US4487260 Drilling slanted combustion passageways |
| 12/11/1984 | US4487259 Prepacked well screen and casing assembly |
| 12/11/1984 | US4487257 Apparatus and method for production of organic products from kerogen |
| 12/11/1984 | US4487054 Method for projecting landfill gas collection rate of a surface collector |
| 12/11/1984 | US4487025 Passive booster for pumping liquified gases |
| 12/11/1984 | CA1179252A1 In situ coal gasification |
| 12/11/1984 | CA1179251A1 Well production apparatus and method |
| 12/11/1984 | CA1179250A1 Oil recovery methods, well casing sealing methods and sealing devices for casing assemblies |
| 12/11/1984 | CA1179115A1 Method for recovering oil from subterranean deposits by emulsion flooding |
| 12/04/1984 | US4485871 Injection of alcohol, displacement with aqueous alkaline solution |
| 12/04/1984 | US4485870 Method and apparatus for conducting wireline operations in a borehole |
| 12/04/1984 | US4485869 Recovery of liquid hydrocarbons from oil shale by electromagnetic heating in situ |
| 12/04/1984 | US4485868 Method for recovery of viscous hydrocarbons by electromagnetic heating in situ |
| 11/28/1984 | EP0126363A1 Use of copolymer from esters and amides of acrylic and/or methacrylic acids as pour point depressants in paraffin solutions |
| 11/27/1984 | US4484639 Method and apparatus for perforating subsurface earth formations |
| 11/27/1984 | US4484632 Well completion method and apparatus |
| 11/27/1984 | US4484630 Method for recovering heavy crudes from shallow reservoirs |
| 11/27/1984 | US4484629 Movable oxidizer injection point for production of coal in situ |
| 11/27/1984 | US4484628 Method and apparatus for conducting wireline operations in a borehole |
| 11/27/1984 | US4484627 Well completion for electrical power transmission |
| 11/27/1984 | US4484626 Pneumatic packer |
| 11/27/1984 | CA1178531A1 Pressure actuated vent assembly for slanted wellbores |
| 11/20/1984 | US4483697 Compact gas liquid separator |
| 11/20/1984 | US4483399 Method of deep drilling |
| 11/20/1984 | US4483398 Decomposition of kerogen to shale oil |
| 11/20/1984 | US4483396 Landfill gas well |
| 11/20/1984 | CA1178195A1 Apparatus and method of hydraulically mining unconsolidated mineral formations |
| 11/20/1984 | CA1178194A1 Stimulation and cleanup of oil-and/or gas-producing wells |
| 11/20/1984 | CA1178040A1 Enhanced oil displacement processes and compositions |
| 11/14/1984 | EP0124580A1 Fine and coarse servo system for access and tracking on an optical disk. |
| 11/13/1984 | US4482364 Oil gas/separator |
| 11/13/1984 | US4482086 Expandable packer assembly for sealing a well screen to a casing |
| 11/13/1984 | US4482014 In a well tool for use in a well bore |
| 11/13/1984 | CA1177748A1 Well perforation device |
| 11/13/1984 | CA1177636A1 Oil recovery employing an alcohol and an ether- linked sulfate or sulfonate |
| 11/06/1984 | US4481503 Production monitoring system |
| 11/06/1984 | US4481020 Liquid-gas separator apparatus |
| 11/06/1984 | US4480697 Method and apparatus for converting an oil well to a well with effluent raising by gas-lift |
| 11/06/1984 | US4480696 Stabilized with surfactant |
| 11/06/1984 | US4480695 Method of assisting surface lift of heated subsurface viscous petroleum |
| 11/06/1984 | US4480691 Recycled fatty acid crude petroleum recovery process |
| 11/06/1984 | US4480690 Accelerated downhole pressure testing |
| 11/06/1984 | US4480689 Block pattern method for in situ gasification of subterranean carbonaceous deposits |