| Patents for E21B 36 - Heating, cooling, or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones (4,262) |
|---|
| 08/13/1996 | US5545804 Heating metal contaminated soil in presenece of hydrocarbons in soil at high temperature to convert atleast one protion of hydrocarbon into coke or carbon and subjecting soil to microwave radiation to fuse or melt vitrifiable metal in soil |
| 08/08/1996 | WO1996023956A1 Method for controlling iron bacteria and improving the hydrodynamics of water wells, and devices therefor |
| 07/23/1996 | US5539853 Downhole heating system with separate wiring cooling and heating chambers and gas flow therethrough |
| 07/16/1996 | US5535825 Heat controlled oil production system and method |
| 07/11/1996 | WO1996021083A1 Method and device for casing a well, particularly an oil well bore or a pipe, using an in situ curable flexible tubular preform |
| 07/10/1996 | CN2231006Y Automatic temperature controlled heating cable for oil-well |
| 07/03/1996 | EP0719187A1 In-situ process for remediating or enhancing permeability of contaminated soil |
| 07/03/1996 | CN2230494Y Cable special for a.c. heating hollow sucker rod |
| 06/20/1996 | WO1996018801A1 Cryogenic coal bed gas well stimulation method |
| 06/13/1996 | DE19543473A1 Vorrichtung und Verfahren zum Entfernen von Ablagerungen bei der Erdöl- und Erdgasförderung Apparatus and method for removing deposits in the oil and gas production |
| 06/12/1996 | CN2228974Y MF induction heating device for pumping rod |
| 06/06/1996 | WO1996008951A3 Downhole system |
| 05/29/1996 | CN2228128Y High-efficiency energy-saving wellhead heating stove |
| 05/15/1996 | CN1122619A Preform or matrix tubular structure for well casing |
| 05/14/1996 | US5517593 Control system for well stimulation apparatus with response time temperature rise used in determining heater control temperature setpoint |
| 04/24/1996 | CN2225539Y Combined circulation raw oil heater for heat pipe wellhead |
| 04/24/1996 | CN2225538Y Automatic control heater for inner heat at mouth of oil well |
| 04/17/1996 | CN2224914Y Far-infrared heating furnace for underground oil |
| 04/09/1996 | CA2072919C Process to increase petroleum recovery from petroleum reservoirs |
| 03/28/1996 | WO1996008951A2 Downhole system |
| 03/20/1996 | CN2222796Y Underground crude oil heating apparatus |
| 03/07/1996 | EP0719187A4 In-situ process for remediating or enhancing permeability of contaminated soil |
| 02/28/1996 | EP0698136A1 Preform or matrix tubular structure for well casing |
| 02/15/1996 | WO1996004461A1 Downhole electrical heating system |
| 02/06/1996 | US5488990 Apparatus and method for generating inert gas and heating injected gas |
| 01/16/1996 | US5484985 Contaminant extraction system |
| 01/09/1996 | US5482402 Method and apparatus for heating subsurface soil for decontamination |
| 11/30/1995 | WO1995032355A1 Double walled insulated tubing and method of installing same |
| 11/29/1995 | CN2213841Y Multi-line circulation type hot pipe wellhead crude oil heater |
| 11/16/1995 | WO1995030863A1 Facility for effecting energy exchange between the ground and an energy exchanger |
| 11/07/1995 | US5464061 Cryogenic coal bed gas well stimulation method |
| 10/10/1995 | CA2052202C Method and apparatus for oil well stimulation |
| 09/13/1995 | EP0580575A4 Electromagnetic system for in situ heating |
| 09/13/1995 | CN2207442Y Anti-blowout tube thermal insulating implement |
| 09/05/1995 | US5447201 Well completion system |
| 07/19/1995 | CN2203713Y Electric heating oil-extracting apparatus of hollow sucker rod pump |
| 07/18/1995 | US5433271 Heat injection process |
| 07/18/1995 | CA2118988C Non-entry method of underground excavation in weak or water bearing grounds |
| 07/12/1995 | CN2203354Y Well electric heater |
| 06/07/1995 | CN2200050Y Device for heating petroleum by working frequency electromagnetism |
| 05/30/1995 | US5420402 Methods and apparatus to confine earth currents for recovery of subsurface volatiles and semi-volatiles |
| 05/23/1995 | US5417282 Use of lightning for extraction of hydrocarbon fuels |
| 05/11/1995 | WO1995012740A1 Method for stimulation of liquid flow in a well |
| 05/11/1995 | CA2175586A1 Method for stimulation of liquid flow in a well |
| 05/04/1995 | DE4337192A1 In-situ process for the remediation of polluted soils |
| 04/11/1995 | US5404952 Heat injection process and apparatus |
| 03/21/1995 | US5400430 Method for injection well stimulation |
| 03/07/1995 | US5394942 Method for stimulation of liquid flow in a well |
| 02/21/1995 | US5391057 Compressing gas flowing through a conduit |
| 02/08/1995 | EP0604427A4 Electromagnetic method and apparatus for the decontamination of hazardous material-containing volumes. |
| 02/01/1995 | EP0636229A1 Compressing gas flowing through a conduit. |
| 02/01/1995 | EP0636228A1 Compressing combustible gas flowing through a conduit |
| 01/10/1995 | US5380127 Non-entry method of underground excavation in weak or water bearing grounds |
| 12/28/1994 | CN2186470Y Hollow dermal-collecting heating sucker rod cable of beam-pumping unit |
| 12/06/1994 | US5370477 In-situ decontamination with electromagnetic energy in a well array |
| 12/06/1994 | CA2033492C Enhanced oil recovery system with a radiant tube heater |
| 11/23/1994 | CN2183444Y Electromagnetic heating device for deep-well petroleum |
| 11/10/1994 | WO1994025655A1 Preform or matrix tubular structure for well casing |
| 11/08/1994 | CA2012328C Corrosion inhibition method and apparatus for downhole electrical heating in mineral fluid wells |
| 11/08/1994 | CA2012327C Corrosion inhibition apparatus for downhole electrical heating |
| 10/25/1994 | CA2049907C Process of electric pipeline heating |
| 10/11/1994 | US5353869 Method and apparatus for producing excessively hot hydrogeothermal fluids |
| 09/21/1994 | CN2177802Y Direct heating type electric stove under pump for high-thick oil field low-temp. oil layer |
| 09/21/1994 | CN2177795Y Socket cable type three-phase AC electrothermic sucker rod |
| 09/15/1994 | WO1994020729A1 Method and apparatus for producing excessively hot hydrogeothermal fluids |
| 09/14/1994 | CN2177091Y Electric heating cable device for hollow oil sucking rod |
| 09/07/1994 | CN2176429Y Heater of oil well pump |
| 07/13/1994 | CN2171673Y Automatic anti-blockage system without cable for oil extraction |
| 07/06/1994 | EP0604427A1 Electromagnetic method and apparatus for the decontamination of hazardous material-containing volumes |
| 07/05/1994 | US5325918 Optimal joule heating of the subsurface |
| 07/05/1994 | US5325795 Mobile material decontamination apparatus |
| 06/21/1994 | US5322115 Installation for energy exchange between the ground and an energy exchanger |
| 06/08/1994 | CN2168068Y Well rod heating cable |
| 06/07/1994 | US5318116 Vacuum method for removing soil contaminants utilizing thermal conduction heating |
| 05/31/1994 | US5316411 Apparatus for in situ heating and vitrification |
| 05/25/1994 | CN2166217Y Insulation box for oil well |
| 05/18/1994 | EP0597154A1 Method and apparatus for heating subsurface soil for decontamination |
| 05/05/1994 | CA2082108A1 Method and apparatus for heating subsurface soil for decontamination |
| 04/28/1994 | WO1994008739A1 In-situ process for remediating or enhancing permeability of contaminated soil |
| 04/05/1994 | US5299887 In-situ process for remediating or enhancing permeability of contaminated soil |
| 03/30/1994 | CN2160015Y Electric heating device under oil production pump |
| 03/29/1994 | US5297627 Method for reduced water coning in a horizontal well during heavy oil production |
| 03/15/1994 | US5293936 Optimum antenna-like exciters for heating earth media to recover thermally responsive constituents |
| 03/02/1994 | CN2157981Y Three-phase alternating-current heating oil production device |
| 03/01/1994 | US5290768 Welan gum-ethylene glycol insulating compositions |
| 03/01/1994 | US5289881 Horizontal well completion |
| 02/22/1994 | US5287923 Sand control installation for deep open hole wells |
| 02/15/1994 | US5285846 Thermal mineral extraction system |
| 02/09/1994 | EP0582118A1 Ground probe, distance piece and one-piece pile for ground probe, geothermal plant and method of manufacturing a geothermal plant |
| 02/08/1994 | CA2015318C Power sources for downhole electrical heating |
| 02/02/1994 | EP0580575A1 Electromagnetic system for in situ heating |
| 02/01/1994 | US5282508 Process to increase petroleum recovery from petroleum reservoirs |
| 01/25/1994 | US5282263 Method of stumulating oil wells by pumped solvent heated in situ to reduce wax obstructions |
| 01/19/1994 | EP0579392A1 Cooled downhole tool |
| 01/19/1994 | CN2153631Y Electric heating device for oil well |
| 01/09/1994 | CA2100010A1 Refrigerant-cooled downhole tool and method |
| 12/28/1993 | US5273116 Firing mechanism for actuating wellbore tools |
| 12/22/1993 | CN2150324Y Integral cable AC electric-heating sucker rod |
| 11/30/1993 | US5265677 Refrigerant-cooled downhole tool and method |
| 11/16/1993 | US5261765 Method and apparatus for heating subsurface soil for decontamination |