| 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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| 03/27/2013 | CN102996097A Three-phase continuous pitshaft heat tracing device for electric pump well |
| 03/21/2013 | WO2013039875A1 Indirect downhole steam generator with carbon dioxide capture |
| 03/21/2013 | WO2013039719A1 Temperature compensated accumulator |
| 03/21/2013 | WO2013039612A1 Apparatus, system and method for generating power in a wellbore |
| 03/21/2013 | US20130068455 Shroud Having Separate Upper and Lower Portions for Submersible Pump Assembly and Gas Separator |
| 03/21/2013 | US20130068454 System, Apparatus and Method For Producing A Well |
| 03/21/2013 | CA2842485A1 Indirect downhole steam generator with carbon dioxide capture |
| 03/20/2013 | CN202813783U 锅炉 Boiler |
| 03/20/2013 | CN202810798U Oil well numerical-control electromagnetic heating apparatus |
| 03/20/2013 | CN202810792U Electromagnetic wax-proof viscosity-reducing device |
| 03/20/2013 | CN202810790U Safety monitoring protection device for coal-fired hot-blast stove |
| 03/19/2013 | US8397807 Processing hydrocarbon materials |
| 03/14/2013 | WO2013036397A1 High temperature drilling with lower temperature rated tools |
| 03/14/2013 | WO2013036390A1 Swelling acceleration using inductively heated and embedded particles in a subterranean tool |
| 03/14/2013 | WO2012123461A3 Electrical and static fracturing of a reservoir |
| 03/14/2013 | CA2847696A1 Swelling acceleration using inductively heated and embedded particles in a subterranean tool |
| 03/13/2013 | CN202788757U Hot oil paraffin removal vehicle |
| 03/12/2013 | CA2672866C Arctic platform |
| 03/07/2013 | WO2012154336A3 Heat removal in drilling and production operations |
| 03/07/2013 | US20130056210 Treating tar sands formations with dolomite |
| 03/07/2013 | US20130056209 Swelling Acceleration Using Inductively Heated and Embedded Particles in a Subterranean Tool |
| 03/06/2013 | CN202767950U Thermal washing wax-melting device of thickened oil |
| 03/06/2013 | CN202767949U Wax removal through thermal wash monitoring system of oil well |
| 03/06/2013 | CN202767908U Thickened oil thermal production well electric heating rod deflected grind-proof device |
| 03/06/2013 | CN102958969A Coated parts and use thereof |
| 03/05/2013 | US8387698 Gas recovery component heating system |
| 03/05/2013 | US8387697 Gas evolving oil viscosity diminishing compositions for stimulating the productive layer of an oil reservoir |
| 02/28/2013 | WO2013028455A1 Method of cooling downhole element using nanoenhanced downhole fluid |
| 02/28/2013 | WO2012123458A3 Electrical reservoir fracturing |
| 02/27/2013 | CN102948010A Diaxial power transmission line for continuous dipole antenna |
| 02/27/2013 | CN102943647A Oil well thick oil heating system |
| 02/26/2013 | US8381815 Production from multiple zones of a tar sands formation |
| 02/26/2013 | US8381806 Joint used for coupling long heaters |
| 02/21/2013 | WO2013025686A1 System, apparatus and method for producing a well |
| 02/21/2013 | US20130043029 High voltage temperature limited heaters |
| 02/21/2013 | US20130043028 Method of cooling downhole element using nanoenhanced downhole fluid |
| 02/21/2013 | CA2845614A1 System, apparatus and method for producing a well |
| 02/20/2013 | CN202745816U Paraffin removal pipe column of flowing well |
| 02/20/2013 | CN202745815U Compressed natural gas hot-wash paraffin removal automobile |
| 02/20/2013 | CN202745814U Christmas tree internal heat circulation heat preserving box |
| 02/20/2013 | CN202745813U Mine well ventilation air and water drainage heat energy comprehensive utilization system |
| 02/20/2013 | CN202745694U Rotary hot melting drill bit |
| 02/20/2013 | CN101775967B Energy-saving anti-freezing system for coal mine well port |
| 02/19/2013 | CA2716450C Aqueous-based insulating fluids and related methods |
| 02/19/2013 | CA2697808C Method and apparatus for in situ extraction of bitumen or very heavy oil |
| 02/19/2013 | CA2483371C Loop systems and methods of using the same for conveying and distributing thermal energy into a wellbore |
| 02/13/2013 | EP2556721A1 Insulating blocks and methods for installation in insulated conductor heaters |
| 02/13/2013 | EP2556210A1 Insulated conductor heaters with semiconductor layers |
| 02/13/2013 | EP2556208A1 Helical winding of insulated conductor heaters for installation |
| 02/13/2013 | CN202731851U Heating well-flushing device with hollow rod |
| 02/13/2013 | CN202731848U High-pressure gas well downhole electrothermal block removal device |
| 02/13/2013 | CN202731766U Oil extraction wellhead electric heater safe valve conversion connector |
| 02/12/2013 | US8372787 Electrically and/or magnetically active coated fibres for wellbore operations |
| 02/12/2013 | US8371371 Apparatus for in-situ extraction of bitumen or very heavy oil |
| 02/12/2013 | CA2786106A1 Methods and systems for in-situ extraction of bitumen |
| 02/07/2013 | US20130032400 Cooled-fluid Systems and Methods for Pulsed-Electric Drilling |
| 02/06/2013 | CN102913315A Cooling system |
| 02/06/2013 | CN102913192A Well dredging method adopting alternating magnetic field for oil production well and well dredging device |
| 02/05/2013 | US8365815 System for extracting and decontaminating groundwater |
| 02/05/2013 | US8365775 Concentric, insulated tubular conduits and method for assembly |
| 01/31/2013 | WO2013016685A1 Apparatus and methods for recovery of hydrocarbons |
| 01/31/2013 | WO2013014197A1 Gas heater/cooler apparatuses and methods |
| 01/31/2013 | WO2013014023A1 Steam generation |
| 01/31/2013 | US20130025861 Methods and Systems for In-Situ Extraction of Bitumen |
| 01/31/2013 | DE102010043529B4 Vorrichtung und Verfahren zur Verwendung der Vorrichtung zur "in situ"-Förderung von Bitumen oder Schwerstöl aus Ölsand-Lagerstätten Apparatus and method for using the device for "in situ" extraction of bitumen or heavy oil from oil sand deposits |
| 01/31/2013 | CA2843107A1 Gas heater/cooler apparatuses and methods |
| 01/31/2013 | CA2842365A1 Apparatus and methods for recovery of hydrocarbons |
| 01/31/2013 | CA2842340A1 Steam generation |
| 01/30/2013 | CN202706994U Oil well liquid adding energy saving heating tank |
| 01/30/2013 | CN202706992U Watering flow wellhead combination valve of oil well valve |
| 01/30/2013 | CN202706979U Blowout processing device of geothermal system |
| 01/30/2013 | CN102906368A A downhole steam generator and method of use |
| 01/30/2013 | CN102900397A Underground semiconductor refrigerating device |
| 01/24/2013 | US20130020128 System and method for the thermal conditioning of a fluid more particularly a drilling mud |
| 01/24/2013 | US20130020080 Method for in situ extraction of hydrocarbon materials |
| 01/17/2013 | US20130014940 Estimating a Wellbore Parameter |
| 01/16/2013 | CN102877821A Thickened oil steam huff and puff injection-production integrated device |
| 01/16/2013 | CN101858205B Device for removing paraffin and washing well by gas heat carrier |
| 01/15/2013 | US8355623 Temperature limited heaters with high power factors |
| 01/15/2013 | US8353347 Deployment of insulated conductors for treating subsurface formations |
| 01/10/2013 | WO2013004277A1 Subsea heat exchanger and method for temperature control |
| 01/10/2013 | WO2012155018A3 Downhole refrigeration using an expendable refrigerant |
| 01/10/2013 | US20130008660 In situ recovery from a hydrocarbon containing formation |
| 01/10/2013 | CA2841792A1 Method for hydrocarbon recovery using sagd and infill wells with rf heating |
| 01/10/2013 | CA2840701A1 Subsea heat exchanger and method for temperature control |
| 01/09/2013 | CN202659214U Well mouth pumping medicine feeding device |
| 01/09/2013 | CN102865052A Heat preservation method for coupling part of insulated tubing pipe column |
| 01/03/2013 | WO2013002644A1 Subsea compression assembly |
| 01/03/2013 | WO2012155017A3 Desorption of a desiccant by radio waves or microwaves for a downhole sorption cooler |
| 01/02/2013 | CN202641483U Gas-fired multifunctional superconducting mobile boiler |
| 01/02/2013 | CN101595273B Optimized well spacing for in situ shale oil development |
| 12/26/2012 | CN202628035U Three-function water jacket furnace system for oil field wellhead |
| 12/26/2012 | CN102844520A Insulating blocks and methods for installation in insulated conductor heaters |
| 12/26/2012 | CN102840670A Strengthened high-efficiency water jacket heating furnace |
| 12/26/2012 | CN102839917A Rotary hot-melting drill bit |
| 12/20/2012 | WO2012173916A1 Co-production of geothermal energy and fluids |
| 12/20/2012 | US20120318526 Managing Treatment of Subterranean Zones |
| 12/20/2012 | US20120318511 Managing Treatment of Subterranean Zones |
| 12/20/2012 | DE102010046724A1 Method for preventing petroleum seepage during conveying of petroleum in deep sea holes by e.g. oil drilling platform, involves carrying out freezing of oil conveying pipe piece or freezing of oil deposit during breaking of pipe piece |
| 12/19/2012 | CN202611662U Electrical heating thick oil nipple for underground turbogenerator |