| 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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| 05/14/2009 | US20090120646 Electrically isolating insulated conductor heater |
| 05/13/2009 | CN201236672Y Gas generator for petroleum thermal production |
| 05/13/2009 | CN201236671Y Swinging firedoor |
| 05/12/2009 | CA2482912C System and method for interpreting drilling data |
| 05/12/2009 | CA2447306C Packer fluid |
| 05/07/2009 | US20090114384 Method for extraction of hydrocarbon fuels or contaminants using electrical energy and critical fluids |
| 05/05/2009 | US7527101 Cooling apparatus and method |
| 05/05/2009 | US7527094 Double barrier system for an in situ conversion process |
| 04/30/2009 | WO2008051830A3 Moving hydrocarbons through portions of tar sands formations with a fluid |
| 04/30/2009 | WO2007111668A3 Gas hydrate material recovery apparatus |
| 04/30/2009 | US20090107679 Subsurface Freeze Zone Using Formation Fractures |
| 04/23/2009 | WO2009052044A1 Irregular spacing of heat sources for treating hydrocarbon containing formations |
| 04/23/2009 | WO2009010659A3 Use of a fluid composition with delayed cross-linking for holding a casing inside a drill hole, and method for reinforcing a drill hole |
| 04/23/2009 | WO2006116122A3 Systems and processes for use in treating subsurface formations |
| 04/23/2009 | US20090101348 Method of Developing Subsurface Freeze Zone |
| 04/23/2009 | US20090101347 Thermal recovery of shallow bitumen through increased permeability inclusions |
| 04/23/2009 | US20090101346 In situ recovery from a hydrocarbon containing formation |
| 04/23/2009 | CA2700998A1 Irregular spacing of heat sources for treating hydrocarbon containing formations |
| 04/16/2009 | US20090095478 Varying properties of in situ heat treatment of a tar sands formation based on assessed viscosities |
| 04/16/2009 | US20090095476 Molten salt as a heat transfer fluid for heating a subsurface formation |
| 04/15/2009 | CN101408097A Stationary type steam injecting boiler with evaporation of 30 ton / hour |
| 04/14/2009 | US7516787 Method of developing a subsurface freeze zone using formation fractures |
| 04/14/2009 | US7516785 Method of developing subsurface freeze zone |
| 04/14/2009 | CA2536124C Heat exchanging apparatus |
| 04/09/2009 | WO2009044304A1 Method and system for reducing heat loss from subsea structures |
| 04/09/2009 | US20090090500 Arrangement and a Method for Heat Transport and Use in Connection With Subsea Equipment |
| 04/08/2009 | CN201218093Y Thick oil borehole viscosity-reduction oil-extraction heating apparatus |
| 04/08/2009 | CN201218082Y Gas well skid-mounted throttling heating stove |
| 04/02/2009 | WO2009042575A1 Skin effect heating system having improved heat transfer and wire support characteristics |
| 04/02/2009 | CA2738826A1 Skin effect heating system having improved heat transfer and wire support characteristics |
| 04/01/2009 | EP1871987B1 In situ conversion process systems utilizing wellbores in at least two regions of a formation |
| 04/01/2009 | CN201215001Y Heating and insulating device for manifold valve of petroleum well drilling wellhead |
| 03/31/2009 | US7510005 Acrylate, methylacrylate polymerizable monomer; ammonium persulfate/N,N,N',N'-tetramethylethylene diamine redox initiator; dioctadecyldimethylammonium chloride antistatic agent; heat fluid system to decrease the risk of sparking and fire |
| 03/31/2009 | US7510000 Reducing viscosity of oil for production from a hydrocarbon containing formation |
| 03/26/2009 | US20090078461 Drilling subsurface wellbores with cutting structures |
| 03/25/2009 | EP1738057B1 Subsurface electrical heaters using nitride insulation |
| 03/25/2009 | CN201212377Y Oil heating and charging machine |
| 03/19/2009 | WO2009035896A1 Method for gas production from gas hydrate reservoirs |
| 03/19/2009 | US20090071647 Thermal processes for subsurface formations |
| 03/18/2009 | CN201209429Y Wax removing and preventing device for electrical heated oil conduit |
| 03/12/2009 | WO2009032005A1 Inline downhole heater |
| 03/12/2009 | WO2009009437A3 Detecting acoustic signals from a well system |
| 03/12/2009 | WO2009009336A3 Producing resources using heated fluid injection |
| 03/12/2009 | US20090065210 Method for gas production from gas hydrate reservoirs |
| 03/11/2009 | CN201206459Y Oilfield heating-furnace for implementing high-temperature detection of furnace tube |
| 03/11/2009 | CN201206450Y Antifreezing and collection transmitting process device of oil production well special for oilfield |
| 03/10/2009 | US7500528 Low temperature barrier wellbores formed using water flushing |
| 03/05/2009 | WO2009027273A1 Method and apparatus for in situ extraction of bitumen or very heavy oil |
| 03/05/2009 | WO2009027262A1 Method and apparatus for in situ extraction of bitumen or very heavy oil |
| 03/05/2009 | WO2008147219A3 Subsea cooler |
| 03/05/2009 | CA2697810A1 Method and apparatus for in situ extraction of bitumen or very heavy oil |
| 03/05/2009 | CA2697808A1 Method and apparatus for in situ extraction of bitumen or very heavy oil |
| 03/05/2009 | CA2633208A1 Method of operating an electrical heating arrangement |
| 03/04/2009 | CN201202460Y Electric heating apparatus of hollow sucker rod |
| 03/03/2009 | US7497253 Downhole steam generator |
| 02/26/2009 | DE102007043622B3 Method for preparing and carrying out soil treatment comprises inserting a hole into the ground using a boring head connected to a borer and closing the flow path by inserting a closing element into the borer |
| 02/25/2009 | CN101372886A Environment-protective and efficient heating stove system for oilfield |
| 02/24/2009 | US7493965 Apparatuses and methods relating to cooling a subterranean drill bit and/or at least one cutting element during use |
| 02/18/2009 | EP2024598A2 Insulation shroud with internal support structure |
| 02/18/2009 | CN201196085Y High pressure pipeline heating mechanism for oil test |
| 02/18/2009 | CN201196070Y Enclosed heat carrier circulating heating apparatus of nesting hollow rod |
| 02/18/2009 | CN201196042Y Prizing individual well hot-washing vehicle |
| 02/17/2009 | US7490665 Variable frequency temperature limited heaters |
| 02/17/2009 | US7490664 Drilling, perforating and formation analysis |
| 02/11/2009 | CN201193508Y High temperature heat pump pipe heated system |
| 02/05/2009 | WO2009016140A2 Method and apparatus for cooling a gaseous hydrocarbon stream |
| 02/05/2009 | US20090032259 Downhole applications of composites having aligned nanotubes for heat transport |
| 02/04/2009 | CN101358515A Well cleanout shunt |
| 02/03/2009 | US7484561 Electro thermal in situ energy storage for intermittent energy sources to recover fuel from hydro carbonaceous earth formations |
| 01/27/2009 | US7481274 Temperature limited heaters with relatively constant current |
| 01/27/2009 | CA2356425C Pulsed combustion device and method |
| 01/22/2009 | WO2009010659A2 Use of a fluid composition with delayed cross-linking for holding a casing inside a drill hole, and method for reinforcing a drill hole |
| 01/22/2009 | US20090020288 Method and Apparatus for a Cold Flow Subsea Hydrocarbon Production System |
| 01/21/2009 | CN201184181Y Electromagnetic induction down-hole heat injecting apparatus |
| 01/21/2009 | CN201184169Y Water compensating apparatus of combining station heating furnace |
| 01/21/2009 | CN201184162Y Dismountable three-shutter heat preservation heating apparatus |
| 01/15/2009 | WO2009009437A2 Detecting acoustic signals from a well system |
| 01/15/2009 | WO2009009336A2 Producing resources using heated fluid injection |
| 01/15/2009 | WO2009009333A2 Treating subterranean zones |
| 01/15/2009 | CA2692686A1 Producing resources using heated fluid injection |
| 01/15/2009 | CA2692596A1 Treating subterranean zones |
| 01/14/2009 | EP1751394A4 Improved down hole oil and gas well heating system and method for down hole heating of oil and gas wells |
| 01/14/2009 | CN201180519Y Down-hole stock solution solar heating and paraffin removal apparatus |
| 01/14/2009 | CN101344348A Oil field produced water heat pump technique |
| 01/14/2009 | CN101343989A High-dryness oil field steam-injection boiler and high-dryness steam production method |
| 01/13/2009 | US7475724 Method of determining a fluid inflow profile of wellbore |
| 01/08/2009 | US20090008090 Generating Heated Fluid |
| 01/07/2009 | EP2010754A2 Adjusting alloy compositions for selected properties in temperature limited heaters |
| 01/07/2009 | EP2010751A2 Temperature limited heaters using phase transformation of ferromagnetic material |
| 12/25/2008 | US20080314593 In situ thermal processing of an oil shale formation using a pattern of heat sources |
| 12/25/2008 | CA2633985A1 Fluid level indication system and technique |
| 12/24/2008 | WO2007124405A3 Adjusting alloy compositions for selected properties in temperature limited heaters |
| 12/24/2008 | WO2007082006A3 Apparatus for treating fluid streams |
| 12/24/2008 | CN201170090Y Low-frequency great current oil well pipe pillar crude oil heating device |
| 12/24/2008 | CN201170084Y Portable well head deicing apparatus |
| 12/23/2008 | US7467658 Down hole drilling fluid heating apparatus and method |
| 12/16/2008 | CA2447393C Method and apparatus for artificial ground freezing |
| 12/09/2008 | US7461691 In situ recovery from a hydrocarbon containing formation |
| 12/09/2008 | CA2404947C Annulus sealing method using eutectic metal and heat induction |
| 12/04/2008 | WO2008147219A2 Subsea cooler |