| 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) |
|---|
| 06/10/1980 | CA1079140A1 Method and apparatus for producing thermal vapor stream |
| 06/03/1980 | US4206024 Applying an alternating current |
| 06/03/1980 | US4205725 Method for forming an automatic burner for in situ combustion for enhanced thermal recovery of hydrocarbons from a well |
| 06/03/1980 | US4205723 Injection of gas and water excluding agent |
| 06/03/1980 | CA1078599A1 Calcite control in an in situ leach operation |
| 05/28/1980 | EP0011430A1 Improvements in waste gas recovery systems |
| 05/27/1980 | US4204574 Low shear polymer injection method with ratio control between wells |
| 05/27/1980 | CA1078160A1 Aqueous anionic surfactant systems |
| 05/20/1980 | US4203853 Fluid for recovering hydrocarbons |
| 05/20/1980 | CA1077834A1 Secondary oil recovery process |
| 05/20/1980 | CA1077833A1 Secondary recovery process utilizing water saturated with gas |
| 05/20/1980 | CA1077832A1 Method of treating formation to remove ammonium ions without decreasing permeability |
| 05/20/1980 | CA1077700A1 Alkyl glyceryl ether sulfonate salts in oil recovery |
| 05/15/1980 | WO1980000921A1 Aqueous micro emulsions of organic substances |
| 05/13/1980 | US4202795 Pellets comprised of the chemical to be released a hydratable gelling agent and a breaker for the gel produced |
| 05/13/1980 | US4202412 Thermally metamorphosing oil shale to inhibit leaching |
| 05/13/1980 | US4202411 Magnesium oxide react with magnesium chloride to provide impervious matrix |
| 05/13/1980 | US4202169 System for combustion of gases of low heating value |
| 05/13/1980 | US4202168 Discharged from an oil well's in-situ combustion process |
| 05/13/1980 | US4202087 Device for retaining setting cables |
| 05/06/1980 | US4201420 Method of oil recovery by thermal mining |
| 05/06/1980 | US4201419 Control of airblast during explosive expansion in an in situ oil shale retort |
| 05/06/1980 | US4201266 Rotatable washer self-cleaning helical spring screen and methods |
| 05/06/1980 | US4201074 Submersible pipe installation systems |
| 05/06/1980 | CA1076954A1 Method for the recovery of oil |
| 04/29/1980 | US4200425 Gas-lift device |
| 04/29/1980 | US4200411 Submerged offshore storage facility |
| 04/29/1980 | US4200337 Catalyses of uranium oxidation |
| 04/29/1980 | US4200336 Means for providing gas seal in production level drift for in situ oil shale retort |
| 04/29/1980 | US4200218 Method of attaching fittings to a cylindrical well screen |
| 04/29/1980 | US4200152 Method for enhancing simultaneous fracturing in the creation of a geothermal reservoir |
| 04/29/1980 | US4200151 Secondary recovery process |
| 04/29/1980 | US4200150 Methods and hydraulically expandable self-cleaning sand screens |
| 04/29/1980 | CA1076474A1 Method of producing viscous materials from subterranean formations |
| 04/22/1980 | US4199680 Method of treating and logging wells |
| 04/22/1980 | US4199275 Articulated column for the exploitation of marine bottom resources, comprising pipings connectable between the column and its base |
| 04/22/1980 | US4199272 System for recharging aquifer and apparatus therefor |
| 04/22/1980 | US4199210 Automatic coupling and decoupling apparatus |
| 04/22/1980 | US4199034 Method and apparatus for perforating oil and gas wells |
| 04/22/1980 | US4199028 Enhanced recovery with geopressured water resource |
| 04/22/1980 | US4199026 Method for detecting underground conditions |
| 04/22/1980 | US4199025 Method and apparatus for tertiary recovery of oil |
| 04/22/1980 | CA1076023A1 Ball sealer diversion of matrix rate treatments of a well |
| 04/22/1980 | CA1075888A1 Flooding with micellar systems affected by cosurfactants |
| 04/15/1980 | US4198214 Heat exchanging, burners |
| 04/15/1980 | US4197911 Using a lower alcohol |
| 04/15/1980 | CA1075597A1 Recovery of gas from water drive gas reservoirs |
| 04/15/1980 | CA1075596A1 Oil recovery process employing a hydrocarbon slug and a thickened aqueous surfactant slug |
| 04/15/1980 | CA1075453A1 Oil recovery method and alkyl alkoxy propio sulfonate surfactants |
| 04/08/1980 | CA1075148A1 Process for recovering viscous, combustible material |
| 04/08/1980 | CA1075147A1 Process for recovering carbonaceous values from in situ oil shale retorting |
| 04/08/1980 | CA1075146A1 Well casing perforator |
| 04/08/1980 | CA1075022A1 Equipment for extracting oil or gas from under the sea bed and method of installing such equipment |
| 04/08/1980 | CA1075021A1 Device for mooring and connecting a submarine conduit, and method employing the said device |
| 04/08/1980 | CA1074987A1 Lignosulfonates as sacrificial agents in oil recovery processes |
| 04/03/1980 | WO1980000590A1 Improved method of servicing wellbores |
| 04/02/1980 | EP0009364A2 Apparatus for remote hydraulic control of a subsea well device |
| 04/01/1980 | US4196329 Situ processing of organic ore bodies |
| 04/01/1980 | US4195691 Composite sucker rod string and method of use thereof |
| 04/01/1980 | US4195690 Method for placing ball sealers onto casing perforations |
| 04/01/1980 | US4195653 Method and apparatus for recovering products of low pumpability |
| 04/01/1980 | CA1074696A1 Oil recovery process by in situ emulsification |
| 04/01/1980 | CA1074695A1 Method and apparatus for recovering metal values from mineral ores by in-situ mining |
| 04/01/1980 | CA1074694A1 Method for recovering gas from solution in aquifer waters |
| 03/25/1980 | US4194857 Subsea station |
| 03/25/1980 | US4194789 Staggered array of explosives for fragmented oil shale formation toward a vertical free face |
| 03/25/1980 | US4194788 Method of forming a rubblized in-situ retort |
| 03/25/1980 | US4194580 Drilling technique |
| 03/25/1980 | US4194577 Method and apparatus for completing a slanted wellbore |
| 03/25/1980 | US4194568 Disconnectable riser columns for under water oil wells |
| 03/25/1980 | US4194566 Method of increasing the permeability of subterranean reservoirs |
| 03/25/1980 | US4194565 Surfactant oil recovery method for use in high temperature formations containing water having high salinity and hardness |
| 03/25/1980 | US4194563 High conformance enhanced oil recovery process |
| 03/25/1980 | US4194562 Method for preconditioning a subterranean oil-bearing formation prior to in-situ combustion |
| 03/25/1980 | US4194393 Well driving and monitoring system |
| 03/18/1980 | US4193460 Perforating gun with paired shaped charger vertically spaced |
| 03/18/1980 | US4193451 Method for production of organic products from kerogen |
| 03/18/1980 | US4193448 Apparatus for recovery of petroleum from petroleum impregnated media |
| 03/18/1980 | US4193290 Steam quality acoustic monitoring system and method |
| 03/18/1980 | CA1073824A1 Gas separator |
| 03/18/1980 | CA1073677A1 Method of processing coal channels in underground coal gasification |
| 03/11/1980 | US4192555 Method of disposing solid sodium chloride while selectively solution mining potassium chloride |
| 03/11/1980 | US4192554 Method for explosive expansion toward horizontal free faces for forming an in situ oil shale retort |
| 03/11/1980 | US4192553 Method for attenuating seismic shock from detonating explosive in an in situ oil shale retort |
| 03/11/1980 | US4192552 Method for establishing a combustion zone in an in situ oil shale retort having a pocket at the top |
| 03/11/1980 | US4192384 Subsea production chamber |
| 03/11/1980 | US4192383 Offshore multiple well drilling and production apparatus |
| 03/11/1980 | US4192382 High conformance enhanced oil recovery process |
| 03/11/1980 | US4192381 In situ retorting with high temperature oxygen supplying gas |
| 03/11/1980 | US4192375 Gravel-packing tool assembly |
| 03/11/1980 | US4192182 Method for performing step rate tests on injection wells |
| 03/11/1980 | CA1073347A1 Method of completion of offshore oil wells and start up structure therefor |
| 03/11/1980 | CA1073346A1 Oil recovery method using in situ-partitioning surfactant flood systems |
| 03/11/1980 | CA1073224A1 Blow-out cover dome |
| 03/06/1980 | WO1980000355A1 Separating one liquid from another |
| 03/04/1980 | US4191733 Reduction of carbon monoxide in substoichiometric combustion |
| 03/04/1980 | US4191493 Method for the production of a cavity limited by a flexible material |
| 03/04/1980 | US4191425 Ethanolamine in a method of recovering coal in aqueous slurry form |
| 03/04/1980 | US4191265 Well bore perforating apparatus |
| 03/04/1980 | US4191256 Subsea flowline connector |