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| Number | Title | Issue Date |
| 7874350 | Reducing the energy requirements for the production of heavy oil An apparatus for generating a heated product stream downhole is provided wherein a fuel rich mixture is reacted downhole by contact with a catalyst to produce a partially reacted product stream, the fuel rich mixture comprising fuel and oxygen. The partially reacted... | 01/25/2011 |
| 7293606 | Heat exchanging apparatus A heat exchanging apparatus including a gas fuelled flameless heater and a heat exchanger loop. The heat exchanger loop includes a heat absorbing section which is contained within the flameless heater so that the flameless heater provides a heat source for the heat ... | 11/13/2007 |
| 7290609 | Subterranean well secondary plugging tool for repair of a first plug A secondary plugging tool is disclosed for use in a subterranean plug, such as in a plugged and/or abandoned well. The repaired plug may be of a cementicious material, or a mechanically, hydraulically or electrically set plug or packer. The plugging tool includes an... | 11/06/2007 |
| 7249630 | Well tool and method for heating and depositing first and second charges of selective temperature melting metal alloys for repairing failure spots along a section of a tubular conduit in a subterranean well A well tool and method for heating and depositing first and second charges of selective temperature melting metal alloys for repairing failure spots along a section of a tubular conduit, such as casing, in a subterranean well. A fuel charge is provided and is ignite... | 07/31/2007 |
| 7182132 | Linearly scalable geothermic fuel cells A ceramic fuel cell(s) is supported in a heat conductive interconnect plate, and a plurality of plates form a conductive heater named a stack. Connecting a plurality of stacks forms a stick of fuel cells. By connecting a plurality of sticks end to end, a string of f... | 02/27/2007 |
| 7165607 | Resistive down hole heating tool A heating tool used for heating cement and/or a ground formation zone and melting billets in a down hole application for sealing oil and gas wells from gas migration. The heating tool has a billet loader which allows a plurality of billets to be loaded into the top ... | 01/23/2007 |
| 6978837 | Production of natural gas from hydrates Methods and apparatus for producing methane gas from a hydrate formation. A column of modified material substantially filling a wellbore extending into the hydrate formation. The column of modified material is permeable to gases. A heat source extends into the colum... | 12/27/2005 |
| 6910536 | In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor A hydrocarbon containing formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion o... | 06/28/2005 |
| 6758668 | Preheating device for heavy wall pipe A preheating apparatus is disclosed which supports a hollow, cylindrical combustible heating element. A solid fuel mixture is used to generate hot gases for the heating of metal surfaces for pre-welding purposes. A grooveway is imbedded radially around the upper por... | 07/06/2004 |
| 6684948 | Apparatus and method for heating subterranean formations using fuel cells A fuel cell based subterranean heater for mineral extraction, in situ decontamination, or other applications. The fuel cells are preferably stacked within a casing which is then inserted into a hole bored, or otherwise formed, into the formation to be hea... | 02/03/2004 |
| 6491096 | Two phase heat generation system and method The present invention provides a two phase heat generation system (10) having a primary pressure vessel (108), an, interior vessel (122) spaced from the primary pressure vessel (108) defining a water jacket cavity (124) and a combustion chamber (125), the... | 12/10/2002 |
| 6269882 | Method for ignition of flameless combustor A combustor method and apparatus is provided. The method utilizes flameless combustion with one or more of three improvements to enhance ignition of the flameless combustor. A catalytic surface can be provided within a combustion chamber to provide flamel... | 08/07/2001 |
| 6044907 | Two phase heat generation system and method The present invention provides a two phase heat generation system having a primary pressure vessel and an interior vessel spaced from the primary pressure vessel defining a water cavity and a combustion chamber, the water cavity delivering fluid into the ... | 04/04/2000 |
| 6019172 | Flameless combustor A combustor method and apparatus is provided. The method utilizes flameless combustion with one or more of three improvements to enhance ignition of the flameless combustor. A catalytic surface can be provided within a combustion chamber to provide flamel... | 02/01/2000 |
| 5899269 | Flameless combustor A combustor method and apparatus is provided. The method utilizes flameless combustion with one or more of three improvements to enhance ignition of the flameless combustor. A catalytic surface can be provided within a combustion chamber to provide flamel... | 05/04/1999 |
| 4507082 | Preheating insert for heavy wall pipe A preheating insert is disclosed. The preferred and illustrated embodiment incorporates an encircling bottom support having a centralized hollow tube. It is made of a frangible material to be easily broken should it fall into the pipe. It supports a hollo... | 03/26/1985 |
| 4180131 | Chemical cutting apparatus for use in wells A chemical cutting apparatus and method for cutting objects in well bores such as, for example, tubing in the bore of an oil or gas well. The apparatus is properly positioned and an igniter is fired activating a gas generator. The resultant pressure axial... | 12/25/1979 |
