| Patents for E21B 36 - Heating, cooling, or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones (4,262) |
|---|
| 07/11/1978 | US4099564 Low heat conductive frangible centralizers |
| 07/11/1978 | US4099563 Steam injection system for use in a well |
| 06/06/1978 | US4093030 Run-in and tie back apparatus |
| 05/30/1978 | CA1032154A1 Exploration boring method and use thereof |
| 05/02/1978 | US4086960 Apparatus for hydrocarbon recovery from earth strata |
| 04/25/1978 | US4085803 Vaporization |
| 04/18/1978 | US4084637 Method of producing viscous materials from subterranean formations |
| 04/11/1978 | US4083404 Oil recovery process utilizing air and superheated steam |
| 04/04/1978 | US4082140 Heat exchange method |
| 03/28/1978 | US4081032 Steam deflector for use in a well |
| 03/28/1978 | US4081028 Steam distribution system for use in a well |
| 03/21/1978 | US4079784 Method for in situ combustion for enhanced thermal recovery of hydrocarbons from a well and ignition system therefor |
| 03/14/1978 | US4078613 Downhole recovery system |
| 03/07/1978 | US4077469 Controlling gas flow of hydrogen and oxygen to produce steam |
| 02/28/1978 | USRE29553 Oil shale retort flue gas cooling and cleaning |
| 01/10/1978 | US4067390 Apparatus and method for the recovery of fuel products from subterranean deposits of carbonaceous matter using a plasma arc |
| 12/13/1977 | US4062405 Method of treating oil-bearing formations using molten sulfur insulating packer fluid |
| 11/15/1977 | US4058164 Heating mine water for recovery of immobile hydrocarbons |
| 11/08/1977 | US4057106 Hot water flood |
| 10/11/1977 | US4053015 Ignition process for downhole gas generator |
| 10/04/1977 | US4051889 Heating frasch sulphur mine water using waste heat |
| 09/27/1977 | US4050515 Insitu hydrogenation of hydrocarbons in underground formations |
| 09/20/1977 | US4049053 Recovery of hydrocarbons from partially exhausted oil wells by mechanical wave heating |
| 09/06/1977 | US4046431 Water lubricated bearing assembly for mining machine |
| 09/06/1977 | US4046405 Run-in and tie back apparatus |
| 09/06/1977 | US4046199 Steam injection apparatus and method |
| 07/26/1977 | US4037660 Method for steam cleaning liners in oil well bores |
| 07/26/1977 | US4037655 Method for secondary recovery of oil |
| 07/19/1977 | US4036285 Arrangement to control heat flow between a member and its environment |
| 06/21/1977 | US4030547 Apparatus for cryothermal fracturing of rock formations |
| 05/24/1977 | US4024919 Technique for insulating a wellbore with silicate foam |
| 05/24/1977 | US4024912 Hydrogen generating system |
| 05/10/1977 | US4022280 Thermal recovery of hydrocarbons by washing an underground sand |
| 05/03/1977 | US4020901 Arrangement for recovering viscous petroleum from thick tar sand |
| 04/26/1977 | US4019575 System for recovering viscous petroleum from thick tar sand |
| 03/15/1977 | US4011906 Downhole valve for paraffin control |
| 03/08/1977 | US4010803 Method for cryothermal fracturing of rock formations |
| 02/15/1977 | US4007791 Method for recovery of crude oil from oil wells |
| 12/07/1976 | US3995695 Method for completing a well in a permafrost zone |
| 11/30/1976 | US3994341 Recovering viscous petroleum from thick tar sand |
| 11/30/1976 | US3994340 Method of recovering viscous petroleum from tar sand |
| 11/09/1976 | US3990835 Burner for igniting oil shale retort |
| 11/09/1976 | US3990502 Arrangement to control heat flow between a member and its environment |
| 11/02/1976 | US3989108 Water exclusion method for hydrocarbon production wells using freezing technique |
| 10/19/1976 | US3986558 Petroleum extraction method and assembly |
| 10/19/1976 | US3986556 Hydrocarbon recovery from earth strata |
| 09/28/1976 | US3982592 Hydrogenation; igniting a hydrogen and oxygen mixture |
| 09/28/1976 | US3982591 Downhole recovery system |
| 09/14/1976 | US3980137 Combustible fuel and oxygen |
| 09/07/1976 | US3978921 Apparatus for cryothermal fracturing of rock formations |
| 08/10/1976 | US3973627 Wellbore gravel pack method |
| 08/10/1976 | US3973626 Well completion in permafrost |
| 07/27/1976 | US3971441 Well completion in permafrost |
| 07/20/1976 | US3970143 Oil well production system |
| 06/22/1976 | US3964554 Temperature-regulated, sealed bearing system for rock drill bits |
| 06/22/1976 | US3964547 Recovery of heavy hydrocarbons from underground formations |
| 04/27/1976 | US3952801 Method for igniting oil shale retort |
| 04/06/1976 | US3948313 Arrangement to control heat flow between a member and its environment |
| 03/16/1976 | US3943618 Method of assembly of a dual-walled pipe |
| 02/17/1976 | US3939036 Heat exchangers and evaporators |
| 02/03/1976 | US3935911 Earth boring bit with means for conducting heat from the bit's bearings |
| 02/03/1976 | US3935910 Method and apparatus for moulding protective tubing simultaneously with bore hole drilling |