| 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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| 01/25/1983 | US4369654 Selective earth formation testing through well casing |
| 01/25/1983 | CA1140043A1 Solvent convection technique for recovering viscous petroleum |
| 01/25/1983 | CA1139929A1 Waterflooding using sulfonated polyethoxylated aliphatic alcohols |
| 01/20/1983 | WO1983000203A1 Moving mass pump jack and method of operation |
| 01/19/1983 | EP0069828A2 Downhole steam generator and turbopump |
| 01/19/1983 | EP0069827A2 Secondary oil recovery system |
| 01/18/1983 | US4369373 Method and apparatus for generating electricity from the flow of fluid through a well |
| 01/18/1983 | US4369049 Vertical drip separator apparatus and method |
| 01/18/1983 | US4368922 Sinking a hole, passing coal solvent, and recovering coal |
| 01/18/1983 | US4368921 Non-subsidence method for developing an in situ oil shale retort |
| 01/18/1983 | US4368920 Method of thermal-mine working of oil reservoir |
| 01/18/1983 | US4368785 Well point and method of driving same |
| 01/18/1983 | US4368781 Method of recovering viscous petroleum employing heated subsurface perforated casing containing a movable diverter |
| 01/11/1983 | USRE31122 Method for ascertaining optimum location for well stimulation and/or perforation |
| 01/11/1983 | US4368136 Carrier fluids for sand or gravel |
| 01/11/1983 | US4367980 Method and apparatus for completing diverless subsea large diameter flowline connections |
| 01/11/1983 | US4367901 Method for forming an in situ oil shale retort |
| 01/11/1983 | US4367651 Pressure transducer body |
| 01/11/1983 | CA1139218A1 Natural gas and thermal energy production from aquafers |
| 01/11/1983 | CA1139217A1 Low density ball sealers for use in well treatment fluid diversions |
| 01/05/1983 | EP0069019A1 Apparatus for well perforation |
| 01/04/1983 | US4367055 Subsea flowline connection yoke assembly and installation method |
| 01/04/1983 | US4366988 Sonic apparatus and method for slurry well bore mining and production |
| 01/04/1983 | US4366987 Method for forming an in situ oil shale retort with horizontal free faces |
| 01/04/1983 | US4366986 Flooding and pyrolyzing |
| 01/04/1983 | US4366864 Method for recovery of hydrocarbons from oil-bearing limestone or dolomite |
| 01/04/1983 | US4366863 Enhanced oil recovery operations |
| 01/04/1983 | US4366862 Downhole pump and testing apparatus |
| 01/04/1983 | US4366861 Downhole gas separator |
| 01/04/1983 | US4366838 Mooring assembly for coupling a submarine conduit to another conduit |
| 12/28/1982 | US4366074 Oil well treating method and composition |
| 12/28/1982 | US4366073 Oil well treating method and composition |
| 12/28/1982 | US4366072 Oil well treating method and composition |
| 12/28/1982 | US4366071 Oil well treating method and composition |
| 12/28/1982 | US4366063 Process and apparatus for recovering usable water and other materials from oil field mud/waste pits |
| 12/28/1982 | US4365912 Tension leg platform assembly |
| 12/28/1982 | US4365671 Well system |
| 12/28/1982 | US4365669 Non-solvent bonded plastic well screen assembly |
| 12/28/1982 | US4365576 Offshore submarine storage facility for highly chilled liquified gases |
| 12/28/1982 | CA1138330A1 Thermal acidization and recovery process for recovering viscous petroleum |
| 12/23/1982 | WO1982004435A1 Process and apparatus for recovering usable water and other materials from oil field mud/waste pits |
| 12/23/1982 | WO1982004405A1 An oil/gas separator |
| 12/22/1982 | EP0067781A1 Method and electrical apparatus for the enhanced recovery of oil |
| 12/21/1982 | US4364833 Apparatus for removing substances from a mixture |
| 12/21/1982 | US4364432 Seal assembly |
| 12/21/1982 | US4364431 Method for recovering oil from an underground formation |
| 12/21/1982 | US4364232 Flowing geothermal wells and heat recovery systems |
| 12/21/1982 | CA1137783A1 Method and apparatus for monitoring the position and movement progress of the flame front in an underground combustion operation |
| 12/21/1982 | CA1137740A1 Polyether polyol for petroleum recovery |
| 12/15/1982 | EP0067079A1 Process and installation for the underground gasification of coal |
| 12/15/1982 | EP0066972A2 Solution mining of an inclined structure |
| 12/15/1982 | EP0066961A1 Production of xanthan having a low pyruvate content |
| 12/14/1982 | US4363567 Multiple bore marine riser with flexible reinforcement |
| 12/14/1982 | US4363366 Screened hollow stem auger for use in well drilling and testing process |
| 12/14/1982 | US4363361 With oxidation catalysts |
| 12/14/1982 | US4363358 Subsurface tubing hanger and stinger assembly |
| 12/14/1982 | US4363215 Catalytic oxidation with hydrogen peroxide |
| 12/14/1982 | CA1137290A1 Ascorbic acid or erythorbic acid for prevention of formation of ferric compound |
| 12/09/1982 | WO1982004234A1 Method and system for loading a tanker with crude or gas from a submarine terminal |
| 12/07/1982 | US4362215 Marine riser provided with a hinged foot for offshore hydrocarbon production |
| 12/07/1982 | US4362213 Method of in situ oil extraction using hot solvent vapor injection |
| 12/07/1982 | US4362212 Method for enhanced petroleum oil recovery |
| 12/07/1982 | CA1136867A1 System for combustion of gases of low heating value |
| 11/30/1982 | US4361197 Blast hole grooving bit and wear resistant compact |
| 11/30/1982 | CA1136652A1 Demolition agent for brittle materials |
| 11/30/1982 | CA1136546A2 Screen assembly |
| 11/30/1982 | CA1136542A1 In-situ formation of oil-in-water emulsion from bituminous oil deposits |
| 11/30/1982 | CA1136487A1 Composite sucker rod string and method of use thereof |
| 11/30/1982 | CA1136395A1 Acylated polyether polyol for petroleum recovery |
| 11/23/1982 | US4360290 Internal pipeline plug for deep subsea pipe-to-pipe pull-in connection operations |
| 11/23/1982 | US4360234 In-situ method and apparatus for sparging gas bubbles |
| 11/23/1982 | US4360233 Method of bulking an in situ oil shale retort substantially full of fragmented shale |
| 11/23/1982 | US4360064 Circulating valve for wells |
| 11/23/1982 | US4360063 Valve |
| 11/23/1982 | US4360062 Method of gaseous detonation fracturing of wells |
| 11/23/1982 | CA1136061A1 Separation for oil and gas, and separation process |
| 11/23/1982 | CA1136036A1 Apparatus and method of mining subterranean rubble piles |
| 11/23/1982 | CA1135950A1 Cycloolefinic compounds in recovery of carbonaceous organic material |
| 11/16/1982 | US4359246 In situ oil shale retort with non-uniformly distributed void fraction |
| 11/16/1982 | US4359094 Shear relief valve |
| 11/16/1982 | US4359092 Method and apparatus for natural gas and thermal energy production from aquifers |
| 11/16/1982 | US4359091 Injecting aqueous solutions of low resistivity, heating by a varying magnetic field |
| 11/16/1982 | CA1135492A1 Flooding with micellar dispersions containing petroleum sulfonates obtained by sulfonating whole or topped crude oil |
| 11/09/1982 | US4358248 Sonic pump for pumping wells and the like employing dual transmission lines |
| 11/09/1982 | US4358219 Method for confining an uncontrolled flow of hydrocarbon liquids |
| 11/09/1982 | US4358218 Apparatus for confining the effluent of an offshore uncontrolled well |
| 11/09/1982 | US4358158 In situ leaching using aqueous carbonic acid; reverse flow |
| 11/09/1982 | US4358157 Using dilute aqueous carbonic acid for leaching with intermittent injection of an oxidant |
| 11/02/1982 | US4357051 Withdrawal of gases and liquids from an in situ oil shale retort |
| 11/02/1982 | US4356866 Injecting oxidizer into cavity below seam; ignition propagation; gas wells; in situ |
| 10/27/1982 | EP0063444A1 Electrically driven submersible pump system |
| 10/26/1982 | US4355686 Well system and method |
| 10/26/1982 | US4355652 Purging device |
| 10/26/1982 | CA1134265A1 Flowline connector seal |
| 10/26/1982 | CA1134264A1 Protective cover for underwater flow line hub |
| 10/26/1982 | CA1134263A1 Secondary recovery method and system using solar energy and concentric tank separator |
| 10/26/1982 | CA1134262A1 Process and apparatus for the underground gasification of coal and carbonaceous materials |
| 10/26/1982 | CA1134261A1 Method of controlling scale in oil recovery operations |
| 10/26/1982 | CA1134259A1 Downhole separator for wells |
| 10/26/1982 | CA1134258A1 Carbon dioxide fracturing process |