| 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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| 10/25/2001 | WO2001078914A2 Heater element for use in an situ thermal desorption soil remediation system |
| 10/25/2001 | CA2405367A1 Thermal insulation material for subsea equipment |
| 10/24/2001 | CN2455930Y Thermal insulator for christmas tree |
| 10/11/2001 | WO2001075403A1 Method and apparatus for flow measurement |
| 10/11/2001 | WO2001074473A1 Method and apparatus for processing fluids produced from an offshore wellbore |
| 10/10/2001 | EP1141629A1 Pulsed combustion device and method |
| 10/04/2001 | EP1137862A2 Apparatus and method for well fluid sampling |
| 10/03/2001 | CN2451732Y Heating apparatus for sucker rod |
| 10/02/2001 | US6295827 Thermodynamic cycle using hydrostatic head for compression |
| 09/27/2001 | WO2001071157A1 Subterranean well completion apparatus with flow assurance system and associated methods |
| 09/19/2001 | CN2448920Y Automatic heater for thick oil production |
| 09/04/2001 | US6285014 Downhole induction heating tool for enhanced oil recovery |
| 09/04/2001 | US6283215 Process for thermal insulation of production tubings placed in a well by means of a non-rigid foam and a system for working a fluid producing well |
| 08/30/2001 | WO2001063088A1 Method for thermally protecting subsea installations, and apparatus for implementing such thermal protection |
| 08/30/2001 | CA2399225A1 Method for thermally protecting subsea installations, and apparatus for implementing such thermal protection |
| 08/29/2001 | CN2445096Y Thermal insulation cover for mouth of oil well |
| 08/28/2001 | US6279658 Method of forming and servicing wellbores from a main wellbore |
| 08/23/2001 | WO2001061262A1 Heat exchange systems |
| 08/21/2001 | US6276457 Method for emplacing a coil tubing string in a well |
| 08/07/2001 | US6269882 Method for ignition of flameless combustor |
| 08/07/2001 | US6269876 Electrical heater |
| 07/31/2001 | US6267172 Heat exchange systems |
| 07/17/2001 | US6260615 Method and apparatus for de-icing oilwells |
| 07/04/2001 | CN2437850Y Electric heating screw pump oil production apparatus |
| 06/27/2001 | EP1109990A1 Method of using a heater with a fiber optic string in a wellbore |
| 06/20/2001 | EP1108115A1 Method for sealing rocks or building material and corresponding device |
| 05/23/2001 | CN2431398Y Petroleum heating furnace |
| 05/18/2001 | CA2325976A1 Optimum oil-well casing heating |
| 05/08/2001 | CA2055548C Low resistance electrical heater |
| 04/24/2001 | US6220346 Thermal insulation vessel |
| 04/19/2001 | WO2001027437A1 Method for de-waxing gas and oil wells and corresponding installation |
| 04/18/2001 | CN1292074A Heat insulating device and method for insulating at least a submarine pipeline at great depth |
| 04/17/2001 | US6216779 Downhole tool actuator |
| 04/12/2001 | WO2001025596A1 Method for processing the production layer in a bottom hole area, packer therefor and method for securing a packer inside the bottom of a hole |
| 04/12/2001 | CA2388799A1 Method and packer for processing a productive formation in bottom-hole zone of a well, and method for fixing a packer inside a well |
| 04/10/2001 | US6214175 Dissociation of gas hydrates using electromagnetic radiation |
| 03/27/2001 | US6206093 System for pumping viscous fluid from a well |
| 03/21/2001 | CN1063517C Oil pipe heating method and its device |
| 03/14/2001 | CN1063253C Oil well sealed storing oil device |
| 02/20/2001 | US6189611 Radio frequency steam flood and gas drive for enhanced subterranean recovery |
| 02/15/2001 | WO2000057021A8 Radio frequency steam flood and gas drive for enhanced subterranean recovery |
| 02/07/2001 | CN1061731C Downhole radio-frequency electromagnetic oil production system |
| 02/01/2001 | WO2001007823A1 System and method for heat insulation of a conduit with vegetable foam |
| 02/01/2001 | WO2000045099A3 Cooling system for downhole tools |
| 02/01/2001 | CA2380536A1 System and method for heat insulation of a conduit with vegetable foam |
| 01/31/2001 | CN2417287Y Internal heat exchange type heat pipe heating means on borehole top |
| 01/24/2001 | EP1070906A1 Deep sea insulation material |
| 01/23/2001 | CA2278827A1 Single string reciprocating pump system |
| 01/17/2001 | CN1280646A Directional drilling tool |
| 12/28/2000 | WO2000079096A1 Method for exploiting a gas-lift wellbore and device for realising the same |
| 12/27/2000 | CN1278315A Method and apparatus for viscosity reduction of clogging hydrocarbons in oil well |
| 12/13/2000 | EP1058800A1 Heat insulating device and method for insulating at least a submarine pipeline at great depth |
| 12/07/2000 | WO2000073624A1 Thermal insulation vessel |
| 11/22/2000 | CN2407120Y Electromagnetic petroleum heater |
| 11/21/2000 | US6148914 Sampling hydrocarbons in a well using a flexible bag |
| 11/02/2000 | EP0760898B1 Double walled insulated tubing and method of installing same |
| 10/31/2000 | CA2190971C Double walled insulated tubing and method of installing same |
| 10/25/2000 | CN2402800Y Electric oil pipe oil-production and wax removal device |
| 10/25/2000 | CN1271053A Halogen pipeline heat-insulating technology for underground injection and production hot smelting expoitation of natural soda |
| 10/24/2000 | US6134892 Cooled electrical system for use downhole |
| 10/18/2000 | EP0888489A4 Hydrocarbon recovery method using inverted production wells |
| 10/11/2000 | CN1057364C Double walled heat insulated tubing and method for installing them |
| 10/10/2000 | US6129148 Method for viscosity reduction of clogging hydrocarbons in oil well |
| 09/28/2000 | WO2000057021A1 Radio frequency steam flood and gas drive for enhanced subterranean recovery |
| 09/28/2000 | CA2368077A1 Radio frequency steam flood and gas drive for enhanced subterranean recovery |
| 09/13/2000 | EP1034355A1 Tool cooling system |
| 08/30/2000 | CN2394000Y Heating and de-waxing apparatus of drilling well |
| 08/17/2000 | WO2000034624A3 Apparatus and method for well fluid sampling |
| 08/16/2000 | EP1027524A1 Method and apparatus for viscosity reduction of clogging hydrocarbons in oil well |
| 08/15/2000 | US6102622 Remediation method |
| 08/15/2000 | US6102122 Control of heat injection based on temperature and in-situ stress measurement |
| 08/15/2000 | US6102120 Zone isolation tools |
| 08/09/2000 | EP1025334A2 Directional drilling tool |
| 08/09/2000 | CN2391006Y Special heating bar for oilwell unfreezing and dewaxing |
| 08/03/2000 | WO2000045099A2 Cooling system for downhole tools |
| 07/26/2000 | EP1022430A1 Method of destruction of a rigid thermal insulation positioned within a confined space |
| 07/19/2000 | CN1260266A High-effect thermal-insulated sealed sleeve manufacture technology |
| 07/13/2000 | WO2000040898A1 Pulsed combustion device and method |
| 07/13/2000 | WO2000040886A1 Heat insulating device and method for insulating at least a submarine pipeline at great depth |
| 07/11/2000 | US6085839 Method of thermally insulating a wellbore |
| 06/28/2000 | CN2385080Y Oil-transporting heating pipe |
| 06/27/2000 | US6079499 Heater well method and apparatus |
| 06/21/2000 | EP1009910A1 Device and method for heating a treating fluid |
| 06/20/2000 | CA2152521C Low flux leakage cables and cable terminations for a.c. electrical heating of oil deposits |
| 06/15/2000 | WO2000034624A2 Apparatus and method for well fluid sampling |
| 06/14/2000 | CN2382834Y Full automatic oil well energy saving heating stove |
| 06/13/2000 | US6073695 Device and method for treating a well bore |
| 06/07/2000 | CN1255579A Method for heating steel tube by winding single-core cable arround it |
| 05/31/2000 | CN2380681Y Heating cable for hollow oil-pumping rod of oil well |
| 05/30/2000 | CA2254982A1 Well casing protector |
| 05/24/2000 | EP1001922A4 Method for recovering gas from hydrates |
| 05/24/2000 | EP1001922A1 Method for recovering gas from hydrates |
| 05/23/2000 | CA2027105C Method of producing a tar sand deposit containing a conductive layer |
| 05/16/2000 | US6062315 Downhole tool motor |
| 05/16/2000 | US6062308 Well header for use in frigid environments |
| 05/02/2000 | US6056057 Heater well method and apparatus |
| 04/19/2000 | CN2374643Y Afterheat comprehensive utilizing appts. of oil extraction equipment heating stove |
| 03/29/2000 | EP0870100B1 Flameless combustor and method |
| 03/29/2000 | CN2371334Y Coil heating stove |
| 03/15/2000 | CN2368975Y Underground electric heating device for preventing sand and promoting fluidity |