| 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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| 04/20/2004 | US6722430 In situ thermal processing of a coal formation with a selected oxygen content and/or selected O/C ratio |
| 04/20/2004 | US6722429 In situ thermal processing of a hydrocarbon containing formation leaving one or more selected unprocessed areas |
| 04/15/2004 | US20040069486 In situ thermal processing of a coal formation and tuning production |
| 04/13/2004 | US6719047 In situ thermal processing of a hydrocarbon containing formation in a hydrogen-rich environment |
| 04/06/2004 | US6715549 In situ thermal processing of a hydrocarbon containing formation with a selected atomic oxygen to carbon ratio |
| 04/06/2004 | US6715548 Electrical heaters may be used to heat the subterranean formation by radiation and/or conduction |
| 04/06/2004 | US6715547 In situ thermal processing of a hydrocarbon containing formation to form a substantially uniform, high permeability formation |
| 04/06/2004 | US6715546 Chemical and/or physical properties of hydrocarbon material within a subterranean formation may need to be changed to allow hydrocarbon material to be more easily removed |
| 04/01/2004 | US20040060693 Annulus for electrically heated pipe-in-pipe subsea pipeline |
| 03/31/2004 | EP1402213A1 High temperature silicone based subsea insulation |
| 03/30/2004 | US6712137 Heat exchanging to superimpose heat |
| 03/30/2004 | US6712136 Providing heat to the formation; controlling the heat from the heat source such that an average temperature within at least a majority of the selected section of the formation is less than about 375 degrees c. |
| 03/30/2004 | US6712135 In situ thermal processing of a coal formation in reducing environment |
| 03/25/2004 | WO2004025076A1 Compositions for thermal insulation and methods of using the same |
| 03/25/2004 | US20040059054 Compositions for thermal insulation and methods of using the same |
| 03/25/2004 | CA2497307A1 Compositions for thermal insulation and methods of using the same |
| 03/24/2004 | EP1399638A1 Hydrothermal drilling method and system |
| 03/23/2004 | US6708758 In situ thermal processing of a coal formation leaving one or more selected unprocessed areas |
| 03/10/2004 | EP1395732A1 In-situ casting of well equipment |
| 03/09/2004 | US6702017 Apparatus and method for well fluid sampling |
| 03/09/2004 | US6702016 In situ thermal processing of a hydrocarbon containing formation with heat sources located at an edge of a formation layer |
| 03/04/2004 | US20040040716 Active heating of thermally insulated flowlines |
| 03/04/2004 | US20040040715 In situ production of a blending agent from a hydrocarbon containing formation |
| 03/02/2004 | US6698515 In situ thermal processing of a coal formation using a relatively slow heating rate |
| 02/24/2004 | US6695062 Heater cable and method for manufacturing |
| 02/19/2004 | WO2003036024A3 Method and system for in situ heating a hydrocarbon containing formation by a u-shaped opening |
| 02/12/2004 | US20040030016 Method for making a quasi-incompressible phase-change material with low thermal conductivity, and resulting product |
| 02/11/2004 | CN2603192Y Hole top heater for oil production |
| 02/10/2004 | US6688387 In situ thermal processing of a hydrocarbon containing formation to produce a hydrocarbon condensate |
| 02/04/2004 | CN2602155Y Automatic temperature control electric heating rod frequency conversion heating arrangement |
| 01/28/2004 | CN1470738A Polish oil-pipe well nitrogen heat-insualting wellhole heat-transfer simulating technique |
| 01/27/2004 | US6681859 Downhole oil and gas well heating system and method |
| 01/22/2004 | US20040015023 Heat exchanging, controlling the heat, temperature and pressure, pyrolyzing; a heater is located in an open wellbore, also heat exchanger, insulation conductor |
| 01/21/2004 | EP1381753A1 Electrical well heating system and method |
| 01/21/2004 | EP1381752A1 In-situ combustion for oil recovery |
| 01/21/2004 | EP1381749A2 Method for in situ recovery from a tar sands formation and a blending agent produced by such a method |
| 01/14/2004 | CN2599226Y Oil recovery heating device |
| 01/08/2004 | WO2003089751A3 Method for improving drilling depth measurements |
| 01/06/2004 | US6672093 Downhole sorption cooling and heating in wireline logging and monitoring while drilling |
| 12/31/2003 | CN1132993C Halogen pipeline heat-insulating technology for underground injection and production hot smelting expoitation of natural soda |
| 12/23/2003 | CA2217380C Methods of decomposing gas hydrates |
| 12/16/2003 | US6664522 Method and apparatus for sealing multiple casings for oil and gas wells |
| 12/11/2003 | WO2003102357A1 Flowline insulation system |
| 12/03/2003 | CN2589667Y Flow string frequency conversion heating arrangement |
| 11/20/2003 | US20030213594 In situ thermal processing of a hydrocarbon containing formation to produce a mixture with a selected hydrogen content |
| 11/13/2003 | WO2003093634A1 Cooling of hydrocarbons |
| 11/13/2003 | WO2003036030A3 In situ thermal processing and upgrading of produced hydrocarbons |
| 11/13/2003 | US20030209340 Microorganism enhancement with earth loop heat exchange systems |
| 11/06/2003 | US20030205378 In situ recovery from lean and rich zones in a hydrocarbon containing formation |
| 10/30/2003 | WO2003089759A1 Method and apparatus for determining drill string movement mode |
| 10/30/2003 | WO2003089758A1 System and method for interpreting drilling data |
| 10/30/2003 | WO2003089751A2 Method for improving drilling depth measurements |
| 10/30/2003 | US20030201098 In situ recovery from a hydrocarbon containing formation using one or more simulations |
| 10/23/2003 | US20030196810 Providing heat from heaters to formation; allowing the heat to transfer to selected section of the formation; controlling the heat from heaters; producing a mixture from the formation |
| 10/23/2003 | US20030196801 In situ thermal processing of a hydrocarbon containing formation via backproducing through a heater well |
| 10/23/2003 | US20030196789 In situ thermal processing of a hydrocarbon containing formation and upgrading of produced fluids prior to further treatment |
| 10/23/2003 | US20030196788 Producing hydrocarbons and non-hydrocarbon containing materials when treating a hydrocarbon containing formation |
| 10/16/2003 | WO2003036041A3 In situ recovery from a hydrocarbon containing formation using barriers |
| 10/16/2003 | US20030192691 In situ recovery from a hydrocarbon containing formation using barriers |
| 10/14/2003 | US6632047 Heater element for use in an in situ thermal desorption soil remediation system |
| 10/09/2003 | WO2003036038A3 In situ thermal processing of a hydrocarbon containing formation via backproducing through a heater well |
| 10/08/2003 | CN2578518Y Electromagnetic heating clogging eliminator for natural gas well |
| 10/02/2003 | US20030183390 Methods and systems for heating a hydrocarbon containing formation in situ with an opening contacting the earth's surface at two locations |
| 09/28/2003 | CA2377424A1 Drilling-mud cooling system |
| 09/25/2003 | US20030178191 In situ recovery from a kerogen and liquid hydrocarbon containing formation |
| 09/18/2003 | US20030173085 Upgrading and mining of coal |
| 09/18/2003 | US20030173072 Forming openings in a hydrocarbon containing formation using magnetic tracking |
| 09/17/2003 | CN2573666Y Borehole frame type heat radiation device |
| 09/11/2003 | US20030168518 Wellhead heating apparatus and method |
| 09/10/2003 | EP0839255B1 Safeguarded method and apparatus for fluid communication using coiled tubing, with application to drill stem testing |
| 09/10/2003 | CN2571997Y Hole top heating furnace |
| 09/10/2003 | CN1441709A Heater element for use in situ thermal desorption soil remediation system |
| 09/08/2003 | CA2413182A1 Wellhead heating apparatus and method |
| 09/04/2003 | WO2003072905A1 Liquified material squeezing method and apparatus for oil and gas wells |
| 09/04/2003 | US20030164238 In situ thermal processing of a coal formation using a controlled heating rate |
| 09/04/2003 | US20030164234 In situ thermal processing of a hydrocarbon containing formation using a movable heating element |
| 09/02/2003 | CA2055223C Method and device for operations in high temperature wellbore |
| 08/28/2003 | WO2003035811A8 Remediation of a hydrocarbon containing formation |
| 08/26/2003 | US6609570 In situ thermal processing of a coal formation and ammonia production |
| 08/21/2003 | WO2003036043A3 Forming openings in a hydrocarbon containing formation using magnetic tracking |
| 08/21/2003 | US20030155111 In situ thermal processing of a tar sands formation |
| 08/19/2003 | US6607033 In Situ thermal processing of a coal formation to produce a condensate |
| 08/13/2003 | CN1436274A Method and system for treating hydrocarbon contg. formation |
| 08/13/2003 | CN1117913C Rotary impacting device for directional drilling in rock |
| 07/31/2003 | US20030141065 In situ thermal processing of hydrocarbons within a relatively permeable formation |
| 07/31/2003 | US20030140711 Method and apparatus for flow measurement |
| 07/23/2003 | CN1432097A In situ recovery from hydrocarbon contg. formation |
| 07/17/2003 | WO2003036040A3 In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor |
| 07/17/2003 | US20030132224 Oil and gas well alloy squeezing method and apparatus |
| 07/16/2003 | EP1327053A2 Method and pumping out means for improving the supply of water to a source or a water procurement well |
| 07/16/2003 | CN1430699A Method for treating hydrocarbon-containing formation |
| 07/16/2003 | CN1430698A Method for treating hydrocarbon-containing formation |
| 07/16/2003 | CN1430697A Method for treating hydrocarbon-containing formation |
| 07/16/2003 | CN1430696A Heating system and method |
| 07/16/2003 | CN1430695A Electrical well heating system and method |
| 07/15/2003 | US6591907 Pyrolysis |
| 07/15/2003 | US6591906 In situ thermal processing of a hydrocarbon containing formation with a selected oxygen content |
| 07/10/2003 | WO2003036032A3 In situ thermal processing of a hydrocarbon containing formation to produce heated fluids |
| 07/09/2003 | CN2559785Y Electric heating cleaning well apparatus |
| 07/09/2003 | CN2559784Y Hot water circulation incidental heat type well head controller |