| Patents for E21B 36 - Heating, cooling, or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones (4,262) |
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| 11/08/1983 | US4413678 Alarm means for use with apparatus protecting a device situated in a borehole |
| 11/01/1983 | US4412585 Producing a coked zine electrode, and applying a voltage |
| 10/25/1983 | US4412124 Electrode unit for electrically heating underground hydrocarbon deposits |
| 10/25/1983 | US4411618 Downhole steam generator with improved preheating/cooling features |
| 10/25/1983 | US4411457 Insulated pipe joint |
| 10/18/1983 | US4409927 Flameless nitrogen skid unit with transmission retarder |
| 10/18/1983 | US4409825 Down hole steam quality measurement |
| 10/04/1983 | US4408116 Superheated steam generator |
| 10/04/1983 | US4407367 Method for in situ recovery of heavy crude oils and tars by hydrocarbon vapor injection |
| 10/04/1983 | US4407136 Downhole tool cooling system |
| 09/14/1983 | EP0088376A2 Method and apparatus for the recovery of hydrocarbons |
| 09/14/1983 | EP0088375A2 Pressure control for steam generator |
| 09/13/1983 | US4403656 Permanent thermal packer |
| 08/30/1983 | US4401162 In situ oil shale process |
| 08/30/1983 | US4401160 Dome-type packoff wellhead |
| 08/30/1983 | US4401159 Jet engine pump and downhole heater |
| 08/23/1983 | US4399868 Well treatment with nitrogen-generating heating solution |
| 08/23/1983 | US4399867 Method for injecting a gaseous stream into a hot subterranean zone |
| 08/23/1983 | US4399865 Concentric steaming string downhole apparatus |
| 08/16/1983 | US4398604 Method and apparatus for producing a high pressure thermal vapor stream |
| 08/16/1983 | US4398603 Steam generation from low quality feedwater |
| 08/16/1983 | US4398597 Means and method for protecting apparatus situated in a borehole from closure of the borehole |
| 08/09/1983 | US4397356 Catalytic combustion in oil wells |
| 08/02/1983 | US4396211 Insulating tubular conduit apparatus and method |
| 08/02/1983 | US4396064 Method and apparatus for injecting a gaseous stream into a subterranean zone |
| 08/02/1983 | US4396063 Process and system for providing multiple streams of wet steam having substantially equal quality for recovering heavy oil |
| 08/02/1983 | US4396062 Apparatus and method for time-domain tracking of high-speed chemical reactions |
| 08/02/1983 | US4396031 Method for restricting uncontrolled fluid flow through a pipe |
| 07/26/1983 | CA1150623A1 Method and apparatus for thermally insulating well |
| 07/19/1983 | US4393928 Apparatus for use in rejuvenating oil wells |
| 06/28/1983 | US4390062 Downhole steam generator using low pressure fuel and air supply |
| 05/31/1983 | US4385663 Packerless well completion assembly |
| 05/31/1983 | US4385661 Downhole steam generator with improved preheating, combustion and protection features |
| 05/10/1983 | US4382469 Method of in situ gasification |
| 04/19/1983 | US4380267 Downhole steam generator having a downhole oxidant compressor |
| 04/19/1983 | US4380265 Method of treating a hydrocarbon producing well |
| 04/12/1983 | US4379489 Combustion of sulfur and oxygen to form sulfur dioxide |
| 04/12/1983 | CA1144501A1 Process for stimulating and upgrading the oil production from a heavy oil reservoir |
| 04/05/1983 | US4378846 Heated working fluid lowers viscosity of hydrocarbons |
| 04/05/1983 | CA1144063A1 Method of thermally insulating wellbores during steam injection |
| 03/22/1983 | US4377205 Low pressure combustor for generating steam downhole |
| 03/01/1983 | US4375157 Downhole thermoelectric refrigerator |
| 02/23/1983 | EP0072676A2 Fuel admixture for a catalytic combustor |
| 02/23/1983 | EP0072675A2 Combustor installation and process for producing a heated fluid |
| 02/22/1983 | US4374545 Carbon dioxide fracturing process and apparatus |
| 02/15/1983 | US4373581 Apparatus and method for radio frequency heating of hydrocarbonaceous earth formations including an impedance matching technique |
| 02/08/1983 | US4372378 Shut-in device for stopping the flow of high pressure fluids |
| 02/01/1983 | US4371045 Method and apparatus for recovering unstable cores |
| 02/01/1983 | CA1140458A1 Submersible motor-pump |
| 01/19/1983 | EP0069828A2 Downhole steam generator and turbopump |
| 01/19/1983 | EP0069827A2 Secondary oil recovery system |
| 01/19/1983 | EP0069740A1 Hazardous materials control |
| 01/18/1983 | US4369373 Method and apparatus for generating electricity from the flow of fluid through a well |
| 01/04/1983 | US4366860 Downhole steam injector |
| 01/04/1983 | CA1138770A1 Thermal insulation method |
| 12/22/1982 | EP0067781A1 Method and electrical apparatus for the enhanced recovery of oil |
| 12/21/1982 | CA1138129A1 Borehole logging tool cryostat |
| 12/21/1982 | CA1138128A1 Borehole logging tool cryostat |
| 12/21/1982 | CA1138127A1 Borehole logging tool cryostat |
| 12/15/1982 | EP0067079A1 Process and installation for the underground gasification of coal |
| 11/09/1982 | CA1135182A1 Downhole steam apparatus |
| 10/27/1982 | EP0063444A1 Electrically driven submersible pump system |
| 10/26/1982 | CA1134258A1 Carbon dioxide fracturing process |
| 10/06/1982 | EP0061494A1 Thermal enhancement. |
| 08/31/1982 | CA1130721A1 Petroleum production technique utilizing a hot aqueous fluid |
| 08/24/1982 | US4345979 Method and apparatus for recovering geopressured methane gas from ocean depths |
| 08/24/1982 | US4345650 Process and apparatus for electrohydraulic recovery of crude oil |
| 08/17/1982 | US4344488 Charged aerosol petroleum recovery method and apparatus |
| 08/17/1982 | US4344483 Multiple-site underground magnetic heating of hydrocarbons |
| 08/11/1982 | EP0057641A2 In situ combustion for oil recovery |
| 08/10/1982 | US4343356 Method and apparatus for treating subsurface boreholes |
| 08/04/1982 | EP0056806A1 Device for recovering heat from underground water and/or from the soil adjoining the underground water |
| 07/13/1982 | CA1127478A1 Vapor generator |
| 06/29/1982 | US4336839 Direct firing downhole steam generator |
| 06/22/1982 | US4335980 Hull heating system for an arctic offshore production structure |
| 06/15/1982 | US4334862 Barrel warmer for drilling rigs |
| 06/15/1982 | CA1125649A1 Direct combustion stimulation of a producing well |
| 05/18/1982 | US4330037 Well treating process for chemically heating and modifying a subterranean reservoir |
| 05/18/1982 | CA1123728A1 Method of extracting liquid and gaseous fuel from oil shale and tar-sand |
| 05/12/1982 | EP0051127A2 Direct firing downhole steam generator |
| 05/11/1982 | US4328865 Wax control in oil wells using a thermal syphon system |
| 04/29/1982 | WO1982001408A1 Hazardous materials control |
| 04/15/1982 | WO1982001214A1 Thermal enhancement |
| 03/30/1982 | US4322603 Electrode steam generator system for secondary oil recovery |
| 03/16/1982 | US4319632 Oil recovery well paraffin elimination means |
| 03/16/1982 | CA1119949A1 Multistage gas generator |
| 02/16/1982 | US4315417 Borehole logging tool cryostat |
| 02/16/1982 | US4315410 Method and apparatus for making ice blocks |
| 02/02/1982 | US4313317 Borehole logging tool cryostat |
| 01/27/1982 | EP0044706A2 Method and apparatus for forming and using a bore hole |
| 01/26/1982 | US4312192 Borehole logging tool cryostat |
| 01/12/1982 | US4310049 Bubbling chlorine in the presence of water |
| 12/01/1981 | US4303128 Injection well with high-pressure, high-temperature in situ down-hole steam formation |
| 11/24/1981 | US4301866 Method and apparatus for igniting an in situ oil shale retort |
| 11/24/1981 | US4301865 In situ radio frequency selective heating process and system |
| 11/10/1981 | US4299278 Control system for well heating by steam |
| 10/29/1981 | WO1981003061A1 Device for recovering heat from underground water and/or from the soil adjoining the underground water |
| 10/27/1981 | US4296814 Method for thermally insulating wellbores |
| 10/27/1981 | US4296739 Solar collector using cotton seed oil to transfer heat to heavy oil wells |
| 10/13/1981 | US4294563 Thermally insulated bulkhead for in situ oil shale retort |