| 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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| 06/10/1986 | US4593763 Carbon dioxide well injection method |
| 06/03/1986 | US4592423 In-situ radiofrequency |
| 05/27/1986 | CA1205008A1 Electrode supporting conduit tube for electrical heating of underground hydrocarbon resources |
| 05/27/1986 | CA1204992A1 Conduct pipe covered with electrically insulating material |
| 05/20/1986 | US4589491 Cold fluid enhancement of hydraulic fracture well linkage |
| 05/06/1986 | CA1204167A1 Apparatus and method for in situ controlled heat processing of hydrocarbonaceous formations |
| 04/29/1986 | US4585158 Method of welding using preheating insert for heavy wall pipe |
| 04/29/1986 | US4585066 Well treating process for installing a cable bundle containing strands of changing diameter |
| 04/22/1986 | US4583589 Subsurface radiating dipole |
| 04/22/1986 | US4583570 Flow control assembly |
| 04/15/1986 | US4582132 Wellhead expansion assembly |
| 04/15/1986 | CA1203158A1 Vacuum insulated steam injection tubing |
| 04/08/1986 | US4580629 Method and apparatus for water flow stimulation in a well |
| 04/08/1986 | US4580504 Method and apparatus for the recovery of hydrocarbons |
| 04/01/1986 | US4579391 Drilling holes, insertion conductive devices, forming bath of melted material, and separation |
| 04/01/1986 | CA1202578A1 Method of prestressing a tubular apparatus |
| 03/25/1986 | US4577664 Enhanced oil recovery from tar sands |
| 03/18/1986 | US4576231 Method and apparatus for combating encroachment by in situ treated formations |
| 03/11/1986 | US4574886 Combustion of hydrocarbon fuel in water emulsion, metal halide and diammonium phosphate |
| 03/11/1986 | US4574884 Drainhole and downhole hot fluid generation oil recovery method |
| 03/05/1986 | EP0172971A1 Production of hydrocarbon formations with reinjection of effluents into the formation |
| 03/04/1986 | US4573911 Heater treater economizer system |
| 02/25/1986 | US4572299 For installing an electrical heater within a well |
| 02/18/1986 | US4570715 Formation-tailored method and apparatus for uniformly heating long subterranean intervals at high temperature |
| 02/18/1986 | CA1200827A1 Conduit tube of an electrode device for electrically heating underground hydrocarbon resources |
| 02/04/1986 | US4567945 Electrode well method and apparatus |
| 02/04/1986 | CA1200192A1 Recovery of viscous hydrocarbons by electromagnetic heating in situ |
| 01/28/1986 | US4566495 Concentric walled conduit for a tubular conduit string |
| 01/14/1986 | CA1199375A1 Mitigation of radio frequency electric field peaking in controlled heat processing of hydrocarbonaceous formations in situ |
| 12/24/1985 | US4559790 Apparatus for maintaining electronic equipment and the like at low temperatures in hot ambient environments |
| 12/17/1985 | US4558743 Steam generator apparatus and method |
| 12/17/1985 | US4558737 Downhole thermoacoustic device |
| 12/10/1985 | US4558206 Electric heating apparatus for providing freeze protection for fluid-control devices at well sites |
| 12/03/1985 | CA1197454A1 Oil field steam production and use |
| 11/19/1985 | US4553592 Method of protecting an RF applicator |
| 11/19/1985 | CA1196854A1 Stimulation of hydrocarbon flow from a geological formation |
| 10/15/1985 | US4547833 High density electronics packaging system for hostile environment |
| 10/15/1985 | US4546829 Enhanced oil recovery process |
| 10/08/1985 | US4545442 Method and apparatus for forming a heat exchange system in the earth |
| 10/08/1985 | US4545435 Conduction heating of hydrocarbonaceous formations |
| 10/08/1985 | US4545430 Metal sheet coated with catalyst and wound into spiral |
| 10/08/1985 | CA1194782A1 Borehole apparatus for thermal equalization |
| 09/24/1985 | CA1193913A1 Electrically driven submersible pump system |
| 09/10/1985 | US4540052 Generation of microorganism control composition and use thereof |
| 09/10/1985 | CA1193185A1 Thermally stimulating well production |
| 09/03/1985 | US4538682 Method and apparatus for removing oil well paraffin |
| 09/03/1985 | US4538442 Method of prestressing a tubular apparatus |
| 09/03/1985 | US4538337 Method of mechanically prestressing a tubular apparatus |
| 08/20/1985 | CA1192002A1 Material containing sodium silicates usable, among other things, as thermal insulation for heavy oil yielding wells |
| 08/13/1985 | US4534413 Method and apparatus for water flow stimulation in a well |
| 08/13/1985 | CA1191744A1 Conduct pipe covered with electrically insulating material |
| 08/06/1985 | CA1191454A1 Insulated tubular structure |
| 07/17/1985 | EP0148694A1 Electronics packaging system |
| 07/09/1985 | US4528104 Oil based packer fluids |
| 07/09/1985 | US4527639 Hydraulic piston-effect method and apparatus for forming a bore hole |
| 07/09/1985 | CA1190140A1 Sealing system for a well bore in which a hot fluid is circulated |
| 07/02/1985 | US4526408 Insulating tubular conduit |
| 07/01/1985 | EP0133439A4 Apparatus and method for heating, thawing and/or demoisturizing materials and/or objects. |
| 06/25/1985 | US4524827 Single well stimulation for the recovery of liquid hydrocarbons from subsurface formations |
| 06/25/1985 | US4524826 Method of heating an oil shale formation |
| 06/18/1985 | US4523644 Thermal oil recovery method |
| 06/18/1985 | US4523640 Arm release system for well logging apparatus |
| 06/11/1985 | US4522263 Stem drive oil recovery method utilizing a downhole steam generator and anti clay-swelling agent |
| 06/11/1985 | US4522262 Single well electrical oil stimulation |
| 06/11/1985 | US4522258 Unitized well testing apparatus for use in hostile environments |
| 06/11/1985 | CA1188516A1 Fuel admixture for a catalytic combustor |
| 05/28/1985 | US4519970 First and second tubular portions hermetically coupled |
| 05/28/1985 | US4519453 Ignition system |
| 05/28/1985 | US4519452 Using heat deactivatable deflocculant |
| 05/15/1985 | EP0141542A2 A downhole tool |
| 05/14/1985 | US4517459 Temperature stabilization system for a radiation detector in a well logging tool |
| 05/14/1985 | US4516520 Method and apparatus of thermal detection using bonded coupon |
| 05/07/1985 | US4515213 Packing tool apparatus for sealing well bores |
| 04/30/1985 | US4513821 Lowering CO2 MMP and recovering oil using carbon dioxide |
| 04/30/1985 | US4513816 Sealing system for a well bore in which a hot fluid is circulated |
| 04/30/1985 | US4513815 System for providing RF energy into a hydrocarbon stratum |
| 04/30/1985 | US4513733 Oil field steam production and use |
| 04/23/1985 | US4512721 Titanium of zirconium getter |
| 04/23/1985 | US4512155 Flowing geothermal wells and heat recovery systems |
| 04/16/1985 | CA1273566B Self-contained hydraulic injection system and method for freezing well surface controls |
| 04/16/1985 | CA1185520A1 Self-contained hydraulic injection system and method for freezing well surface controls |
| 04/16/1985 | CA1185519A1 Variable rpm submersible pump assembly |
| 04/09/1985 | US4510437 Apparatus and method for measuring the permittivity of a substance |
| 04/09/1985 | US4509599 Gas well liquid removal system and process |
| 04/09/1985 | US4509595 In situ combustion for oil recovery |
| 04/02/1985 | US4508168 RF Applicator for in situ heating |
| 03/26/1985 | US4507082 Preheating insert for heavy wall pipe |
| 03/12/1985 | CA1183909A1 Rf applicator for in situ heating |
| 03/05/1985 | US4502535 Jet engine pump and downhole heater |
| 02/27/1985 | EP0133439A1 Apparatus and method for heating, thawing and/or demoisturizing materials and/or objects |
| 02/26/1985 | US4501440 Insulated tubing joint |
| 02/26/1985 | US4501337 Apparatus for forming and using a bore hole |
| 02/19/1985 | US4500263 Electrically driven submersible pump system |
| 02/19/1985 | US4499946 Enhanced oil recovery process and apparatus |
| 02/19/1985 | US4499945 Silane-propane ignitor/burner |
| 02/19/1985 | CA1182745A1 Packerless well completion assembly |
| 02/19/1985 | CA1182743A1 Downhole steam generator and turbopump |
| 02/12/1985 | US4498542 Direct contact low emission steam generating system and method utilizing a compact, multi-fuel burner |
| 02/12/1985 | US4498535 Apparatus and method for in situ controlled heat processing of hydrocarbonaceous formations with a controlled parameter line |
| 02/12/1985 | US4498531 Emission controller for indirect fired downhole steam generators |