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| Number | Title | Issue Date |
| 8176983 | Gas recovery component heating system A gas recovery component heating apparatus and method of use. The apparatus includes an insulating shell and at least one heating element positioned along the interior of the insulating shell. The apparatus further includes one or more apertures configured to allow ... | 05/15/2012 |
| 8162059 | Induction heaters used to heat subsurface formations A heating system for a subsurface formation includes an elongated electrical conductor located in the subsurface formation. The electrical conductor extends between at least a first electrical contact and a second electrical contact. A ferromagnetic conductor at lea... | 04/24/2012 |
| 8151884 | Combined development of oil shale by in situ heating with a deeper hydrocarbon resource A method for producing hydrocarbons from subsurface formations at different depths is first provided. In one aspect, the method includes the step of heating organic-rich rock, in situ, within a subsurface formation at a first depth. The result of the heating step is... | 04/10/2012 |
| 8146664 | Utilization of low BTU gas generated during in situ heating of organic-rich rock A method for utilizing gas produced from an in situ conversion process includes heating an organic-rich rock formation, for example an oil shale formation. The method may include producing a production fluid from the organic-rich rock formation where the production ... | 04/03/2012 |
| 8136596 | Methods of using water-superabsorbent polymers to reduce heat transfer A thermal insulating packer fluid contains at least one water superabsorbent polymer and optionally water and/or brine, and a viscosifying polymer. The composition is capable of inhibiting unwanted heat loss from production tubing or uncontrolled heat transfer to ou... | 03/20/2012 |
| 8082995 | Optimization of untreated oil shale geometry to control subsidence A method for developing hydrocarbons from a subsurface formation. The subsurface formation may include oil shale. The method may include conductively heating portions of an organic-rich rock formation located in a development area, thereby pyrolyzing at least a port... | 12/27/2011 |
| 8037936 | Method of heating sub sea ESP pumping system A system and method is provided for heating fluid to be pumped by an electrical submersible pumping system. Heat for heating the fluid may be inductively generated by adjusting the power delivered to the motor of the pumping system. In one example, the power adjustm... | 10/18/2011 |
| 8020622 | Annealing of materials downhole A downhole annealing system includes a component to be annealed; a steam generating catalyst in proximity to the component; and a reactant fuel selectively communicative with the catalyst to produce an exothermic reaction and method. ... | 09/20/2011 |
| 8020621 | Downhole applications of composites having aligned nanotubes for heat transport In one aspect, an apparatus is disclosed that includes an anisotropic nanocomposite element in thermal communication with a heat-generating element for conducting heat away from the heat-generating element along a selected direction. In another aspect, a method of c... | 09/20/2011 |
| 7950460 | Controlling the pressure within an annular volume of a wellbore A process is described for replacing at least a portion of the liquid within the annular volume of a casing system within a wellbore with a second liquid. The second liquid is preselected to provide a measure of control of the pressure within the annular volume as t... | 05/31/2011 |
| 7950459 | Using a biphasic solution as a recyclable coiled tubing cleanout fluid Methods and apparatus for forming a fluid for use within in a subterranean formation including combining a partitioning agent and viscosifying polymer into a fluid, introducing the fluid into the subterranean formation, and recovering at least a portion of the fluid... | 05/31/2011 |
| 7950458 | Drilling, completing and stimulating a hydrocarbon production well An apparatus and method for drilling a well in a heavy oil or bitumen reservoir for in situ recovery of heavy oil and bitumen is provided. More particularly, an apparatus and method for drilling, completing and/or stimulating a heavy oil or bitumen well in a heavy o... | 05/31/2011 |
| 7931086 | Heating systems for heating subsurface formations Methods and systems for heating a subsurface formation are described herein. A heating system for a subsurface formation includes a sealed conduit positioned in an opening in the formation and a heat source. The sealed conduit includes a heat transfer fluid. The hea... | 04/26/2011 |
| 7921913 | Vacuum insulated dewar flask An apparatus and method for protecting temperature sensitive components from the extreme temperatures a hydrocarbon producing wellbore. The apparatus comprises an inner housing encompassed by an exterior housing, where a plenum is formed between the two housings. A ... | 04/12/2011 |
| 7905290 | Device for the thermal stimulation of gas hydrate formations A method for the thermal stimulation of a geological gas hydrate formation (10) is described in which thermal energy is supplied to the gas hydrate formation (10) so that gas hydrates in the gas hydrate formation (10) are converted and gaseous c... | 03/15/2011 |
| 7896078 | Method of using crosslinkable brine containing compositions A method of enhancing the productivity of a subterranean formation penetrated by a gas, oil or geothermal well consists of introducing into the formation and/or well a pumpable polymerizable fluid comprising a crosslinkable, monofunctional alkene, multi-functional a... | 03/01/2011 |
| 7886825 | Formation fluid sampling tools and methods utilizing chemical heating A formation fluid sampling tool is provided with reactants which are carried downhole and which are combined in order to generate heat energy which is applied to the formation adjacent the borehole. By applying heat energy to the formation, the formation fluids are ... | 02/15/2011 |
| 7870905 | Controlling the pressure within an annular volume of a wellbore A process is described for replacing at least a portion of the liquid within the annular volume of a casing system within a wellbore with a second liquid. The second liquid is preselected to provide a measure of control of the pressure within the annular volume as t... | 01/18/2011 |
| 7870904 | Enhanced hydrocarbon recovery by steam injection of oil sand formations A method and apparatus for enhanced recovery of petroleum fluids from the subsurface by injection of a steam and hydrocarbon vaporized solvent in contact with the oil sand formation and the heavy oil and bitumen in situ. Multiple propped hydraulic fractures are cons... | 01/18/2011 |
| 7845411 | In situ heat treatment process utilizing a closed loop heating system Systems and methods for an in situ heat treatment process that utilizes a circulation system to heat one or more treatment areas are described herein. The circulation system may use a heated liquid heat transfer fluid that passes through piping in the formation to t... | 12/07/2010 |
| 7832482 | Producing resources using steam injection A system for producing fluids from a subterranean zone comprises a tubing string disposed in a well bore, the tubing string adapted to communicate fluids from the subterranean zone to a ground surface. A downhole fluid lift system is operable to lift fluids towards ... | 11/16/2010 |
| 7832484 | Molten salt as a heat transfer fluid for heating a subsurface formation A heating system for a subsurface formation includes a conduit located in an opening in the subsurface formation. An insulated conductor is located in the conduit. A material is in the conduit between a portion of the insulated conductor and a portion of the conduit... | 11/16/2010 |
| 7832483 | Methods of recovering hydrocarbons from oil shale and sub-surface oil shale recovery arrangements for recovering hydrocarbons from oil shale This invention includes methods of recovering hydrocarbons from oil shale, and sub-surface oil shale recovery arrangements for recovering hydrocarbons from oil shale. In one implementation, a sub-surface oil shale recovery arrangement for recovering hydrocarbons fro... | 11/16/2010 |
| 7823643 | Insulation shroud with internal support structure The present invention is directed to an insulation shroud with internal support structure. In one illustrative embodiment, the insulation shroud includes a body adapted to be positioned around a subsea component, the body including an insulating material having an i... | 11/02/2010 |
| 7793722 | Non-ferromagnetic overburden casing Systems, methods, and heaters for treating a subsurface formation are described herein. At least one system for electrically insulating an overburden portion of a heater wellbore is described. The system may include a heater wellbore located in a subsurface formatio... | 09/14/2010 |
| 7775281 | Method and apparatus for stimulating production from oil and gas wells by freeze-thaw cycling In a well stimulation method, a subsurface formation is fractured by freezing a water-containing zone within the formation in the vicinity of a well, thereby generating expansive pressures which expand or created cracks and fissures in the formation. The frozen zone... | 08/17/2010 |
| 7770645 | Method and apparatus for downhole thermoelectric power generation Methods and system are described for providing electric power in a wellbore including at least one thermoelectric generator at a downhole location; and one or more thermally insulated sections of wellbore tubing located such as to reduce heat loss of fluid flowing t... | 08/10/2010 |
| 7762332 | Method of using water-superabsorbent polymer in production tubing and pipes A thermal insulating packer fluid contains at least one water superabsorbent polymer and optionally water and/or brine, and a viscosifying polymer. The composition is capable of inhibiting unwanted heat loss from production tubing or uncontrolled heat transfer to ou... | 07/27/2010 |
| 7753122 | Method of developing and producing deep geothermal reservoirs The present invention relates to a method and system for extracting and/or utilizing thermal energy from rock formations. This Abstract is provided to comply with rules requiring an Abstract that allows a searcher or other reader to quickly ascertain subject matter ... | 07/13/2010 |
| 7743831 | Thermal activation mechanisms and methods for use in oilfield applications A method and apparatus associated with producing hydrocarbons. In one embodiment, the apparatus comprises at least one heating element that is disposed in a chamber with actuator material. A member is also partially coupled to the chamber. The member is configured t... | 06/29/2010 |
| 7708073 | Heat generator for screen deployment A screen assembly has a material that conforms to the borehole shape after insertion. The assembly comprises a compliant layer that takes the borehole shape on expansion. The outer layer is formed having holes to permit production flow. The selected conforming mater... | 05/04/2010 |
| 7703528 | Reducing COemissions from oilfield diesel engines A method of reducing CO2 emission from a wellsite diesel engine includes the steps of: providing the wellsite diesel engine operatively coupled to a wellsite apparatus for transmission of power from the wellsite diesel engine to the wellsite apparatus; an... | 04/27/2010 |
| 7681647 | Method of producing drive fluid in situ in tar sands formations Methods of treating a tar sands formation are described herein. Methods for treating a tar sands may include providing heat to at least part of a hydrocarbon layer in the formation from one or more heaters located in the formation. The heat may be allowed to transfe... | 03/23/2010 |
| 7677314 | Method of condensing vaporized water in situ to treat tar sands formations Methods for treating a tar sands formation are described herein. Methods may include heating at least a section of a hydrocarbon layer in the formation from a plurality of heaters located in the formation. Heat may be allowed to transfer from the heaters to at least... | 03/16/2010 |
| 7665524 | Liquid metal heat exchanger for efficient heating of soils and geologic formations Apparatus for efficient heating of subterranean earth includes a well-casing that has an inner wall and an outer wall. A heater is disposed within the inner wall and is operable within a preselected operating temperature range. A heat transfer metal is disposed with... | 02/23/2010 |
| 7647971 | Method of developing subsurface freeze zone A method of lowering the temperature of a subsurface formation, e.g., comprising oil shale, includes injecting a cooling fluid under pressure into a wellbore. The wellbore is completed at or below a depth of the subsurface formation, and the wellbore includes a bore... | 01/19/2010 |
| 7647972 | Subsurface freeze zone using formation fractures A method of lowering the temperature of a subsurface formation, e.g., a subsurface formation including oil shale, includes completing a well having fluid communication with the subsurface formation at a first depth and a second lower depth. A fracturing fluid is inj... | 01/19/2010 |
| 7644765 | Heating tar sands formations while controlling pressure Methods for treating a tar sands formation are described herein. Methods may include heating at least a section of a hydrocarbon layer in the formation from a plurality of heaters located in the formation. A pressure in the majority of the section may be maintained ... | 01/12/2010 |
| 7604054 | Enhanced hydrocarbon recovery by convective heating of oil sand formations The present invention involves a method and apparatus for enhanced recovery of petroleum fluids from the subsurface by convective heating of the oil sand formation and the heavy oil and bitumen in situ by a downhole electric heater. Multiple propped vertical hydraul... | 10/20/2009 |
| 7597147 | Temperature limited heaters using phase transformation of ferromagnetic material Systems, methods, and heaters for treating a subsurface formation are described herein. Systems and methods for making heaters are described herein. At least one heater includes a ferromagnetic conductor and an electrical conductor. The electrical conductor is elect... | 10/06/2009 |
