Class 392/301 - Borehole type

Subclass of Class 392 - Electric resistance heating devices
Definition: Subject matter under Class 219, ... wherein the heating
No. of patents: 58
Last issue date: 09/27/2011

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Number	Title	Issue Date
8027571	In situ conversion process systems utilizing wellbores in at least two regions of a formation A system for heating a subsurface formation is described. The system includes a plurality of elongated heaters located in a plurality of openings in the formation. At least two of the heaters are substantially parallel to each other for at least a portion of the len...	09/27/2011
7986869	Varying properties along lengths of temperature limited heaters A system for heating a subsurface formation is described. The system includes an elongated heater in an opening in the formation. The elongated heater includes two or more portions along the length of the heater that have different power outputs. At least one portio...	07/26/2011
7912358	Alternate energy source usage for in situ heat treatment processes Systems, methods, and heaters for treating a subsurface formation are described herein. At least one system for providing power to one or more subsurface heaters is described herein. The system may include an intermittent power source; a transformer coupled to the i...	03/22/2011
7860377	Subsurface connection methods for subsurface heaters A system for heating a subsurface formation is described. The system includes a first elongated heater in a first opening in the formation. The first elongated heater includes an exposed metal section in a portion of the first opening. The portion is below a layer o...	12/28/2010
7831134	Grouped exposed metal heaters A system for treating a hydrocarbon containing formation is described. The system includes two or more groups of elongated heaters. The group includes two or more heaters placed in two or more openings in the formation. The heaters in the group are electrically coup...	11/09/2010
7831133	Insulated conductor temperature limited heater for subsurface heating coupled in a three-phase WYE configuration A heating system for a subsurface formation is described. The heating system includes a first heater, a second heater, and a third heater placed in an opening in the subsurface formation. Each heater includes: an electrical conductor; an insulation layer at least pa...	11/09/2010
7431076	Temperature limited heaters using modulated DC power The invention provides a system configured to heat at least a part of a subsurface formation. The system includes: an electrical power supply configured to provide modulated direct current (DC); and one or more electrical conductors configured to be electrically cou...	10/07/2008
7398823	Selective electromagnetic production tool A method for resistively heating a subterranean region to lower the viscosity of heavy oil by using production tubing coupled to at least two electrodes modified for three-phase flow and an electrically insulating body. ...	07/15/2008
7351599	High-powered light emitting device with improved thermal properties A light emitting device includes a first semiconductor layer of a first conductivity type, an active region, and a second semiconductor layer of a second conductivity type. First and second contacts are connected to the first and second semiconductor layers. In some...	04/01/2008
7322415	Subterranean electro-thermal heating system and method A subterranean electro-thermal heating system including one or more heater cable sections extending through one or more heat target regions of a subterranean environment and one or more cold lead sections coupled to the heater cable section(s) and extending through ...	01/29/2008
7311151	Substantially neutrally buoyant and positively buoyant electrically heated flowlines for production of subsea hydrocarbons A flowline is described for producing hydrocarbons from a subsea well that is comprised of a substantially neutrally buoyant tubular composite umbilical. The flowline may possess electrical heating apparatus within the tubular walls of the tubular composite umbilica...	12/25/2007
7290959	Electrode heating with remediation agent A remediation method and system is disclosed. A plurality of conductors is installed into the subsurface to introduce electrical current to produce heat in the subsurface. One or more agents are released into the subsurface to cause or accelerate the decomposition o...	11/06/2007
7219734	Inhibiting wellbore deformation during in situ thermal processing of a hydrocarbon containing formation A method for treating a hydrocarbon containing formation is described. The method may include providing heat from one or more heaters to at least a portion of the formation. At least one heater may be located in at least one wellbore in the formation. At least one w...	05/22/2007
7201221	Wellbores utilizing fiber optic-based sensors and operating devices This invention provides a method for controlling production operations using fiber optic devices. An optical fiber carrying fiber-optic sensors is deployed downhole to provide information about downhole conditions. Parameters related to the chemicals being used for ...	04/10/2007
7185702	Methods and compositions for the in-situ thermal stimulation of hydrocarbons using peroxide-generating compounds One embodiment provides a method for stimulating hydrocarbon production in a subterranean formation, comprising: introducing a peroxide-generating compound into a desired location in a subterranean formation, wherein the peroxide-generating compound is substantially...	03/06/2007
7165615	In situ recovery from a hydrocarbon containing formation using conductor-in-conduit heat sources with an electrically conductive material in the overburden In an embodiment, a system may be used to heat a hydrocarbon containing formation. The system may include a conduit placed within an opening in the formation. A conductor may be placed within the conduit. The conductor may provide heat to a portion of the formation....	01/23/2007
7156172	Method for accelerating oil well construction and production processes and heating device therefor Methods are described for providing localized heating in an oil well at precise depths to accomplish or expedite specific objectives. The methods involve the use of a heating tool which can be lowered into an oil well to apply heat at a precise depth to achieve a de...	01/02/2007
7124820	Exothermic tool and method for heating a low temperature metal alloy for repairing failure spots along a section of a tubular conduit An exothermic well tool and method of use for the repair of failure spots along a section of a first tubular conduit, such as casing, wherein the housing of the tool is heated to at least a temperature approximately in excess of that required to activate and melt an...	10/24/2006
7121341	Conductor-in-conduit temperature limited heaters A heater may include an electrical conductor. Applying alternating current to the electrical conductor may generate resistively heat the electrical conductor. The electrical conductor may include an electrically resistive ferromagnetic material. The ferromagnetic ma...	10/17/2006
7090017	Low cost method and apparatus for fracturing a subterranean formation with a sand suspension The present invention is directed to a low cost method and apparatus for fracturing a subterranean formation. The invention involves using a centrifugal pump to combine a fracture fluid, a sand suspension and liquid additive and discharge a mixture of these componen...	08/15/2006
7069993	Down hole oil and gas well heating system and method for down hole heating of oil and gas wells A down hole heating system for use with oil and gas wells which exhibit less than optimally achievable flow rates because of high oil viscosity and/or blockage by paraffin (or similar meltable petroleum byproducts). The heating unit the present invention includes sh...	07/04/2006
7040390	Wellbores utilizing fiber optic-based sensors and operating devices This invention provides a method for controlling production operations using fiber optic devices. An optical fiber carrying fiber-optic sensors is deployed downhole to provide information about downhole conditions. Parameters related to the chemicals being used for ...	05/09/2006
7037724	Method for storing and transporting crude oil Disclosed is a method for transporting blended crude oils comprising the steps of; (a) admixing a first crude oil with a second, different crude oil to form a crude oil admixture; (b) determining a first value representing the content of unprecipitated asphaltenes i...	05/02/2006
7032658	High power umbilicals for electric flowline immersion heating of produced hydrocarbons Methods and apparatus for installing electrically heated composite umbilicals within subsea flowlines containing produced hydrocarbons as immersion heaters to prevent waxes and hydrates from forming within the subsea flowlines that could block the flowlines. The ele...	04/25/2006
6978843	Well configuration and method of increasing production from a hydrocarbon well A well configuration and method of increasing production from a hydrocarbon well having pre-existing production tube. A composite velocity string having an outer diameter smaller than the inner diameter of the production tube is installed in the production tube so t...	12/27/2005
6912354	Concentric electrode DC arc systems and their use in processing waste materials An electrode assembly comprising concentric tubular electrodes is provided for high temperature processing of materials. The electrode assembly is connected with a power supply that includes switching means for alternatively operating the electrode assembly in a tra...	06/28/2005
6769483	In situ thermal processing of a hydrocarbon containing formation using conductor in conduit heat sources A hydrocarbon containing formation may be treated using an in situ thermal process. Hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation from heat sources to raise a temperature of a port...	08/03/2004
6742593	In situ thermal processing of a hydrocarbon containing formation using heat transfer from a heat transfer fluid to heat the formation A hydrocarbon containing formation may be treated using an in situ thermal process. Hydrocarbons, H2, and/or other formation fluids may be produced from the formation. Heat may be applied to the formation from heat sources to raise a temperature of a port...	06/01/2004
6631761	Wet electric heating process A wet electric heating ("WEH") process involves establishing electrode zones ("e-zones") around conductors (e.g., wells) for distributing electric current and thereby generating and distributing heat accordingly through a target region in a subterranean f...	10/14/2003
6421500	Concentric electrode DC arc systems and their use in processing waste materials An electrode assembly comprising concentric tubular electrodes is provided for high temperature processing of materials. The electrode assembly is connected with a power supply that includes switching means for alternatively operating the electrode assemb...	07/16/2002
6260615	Method and apparatus for de-icing oilwells A power cable for an ESP is used also for heating well bores in cold climates. An electrical switch is located within a wellbore at a selected location in the power cable. The electrical switch is provided to selectively short out the conductors within th...	07/17/2001
6023554	Electrical heater A heater is disclosed, the heater comprising: a heating element effective to generate radiant energy; a casing surrounding the heating element separated from the heating element; and support material between the casing and the heating element wherein the ...	02/08/2000
5974226	Heated power cable A heated power cable for oil wells providing controllable, variable power output and heater redundancy. Heating elements are electrically and thermally insulated within the same armor in a manner that permits the heating elements to direct heat to the oil...	10/26/1999
5907662	Electrode wells for powerline-frequency electrical heating of soils An electrode well for use in powerline-frequency heating of soils for decontamination of the soil. Heating of soils enables the removal of volatile organic compounds from soil when utilized in combination with vacuum extraction. A preferred embodiment of ...	05/25/1999
5649786	Apparatus for down hole fusing The present invention is directed to a method for making service connection to polyethylene replacement sewer pipe. Specifically, the method involves the steps of (1) locating the service; (2) excavating an opening less than two feet in diameter from the ...	07/22/1997
5621844	Electrical heating of mineral well deposits using downhole impedance transformation networks A.C. electrical heating system for heating a fluid reservoir (deposit) in the vicinity of a mineral fluid well, usually an oil well, utilizes A.C. electrical power in a range of 25 Hz to 30 KHz. The well has a borehole extending down through an overburden...	04/15/1997
5586213	Ionic contact media for electrodes and soil in conduction heating Ionic contact is established and maintained between electrodes and soil in ohmic heating of a subsurface formation for recovery of volatile and semi-volatile materials, such as hazardous waste, hydrocarbon-like materials, and valuable minerals having ther...	12/17/1996
5517593	Control system for well stimulation apparatus with response time temperature rise used in determining heater control temperature setpoint A control system for well stimulation equipment including a source of electrical power, a source of injection fluid, a fluid injection system, and a downhole electrical heater, electrically connected to the source of electrical power includes one or more ...	05/14/1996
5400430	Method for injection well stimulation A method of stimulating injection wells having a wellbore. The method includes the steps of placing a heater at or near the bottom of the well, adjacent to the area to be treated, energizing the heater to release heat energy, flowing a solvent past the he...	03/21/1995
5282263	Method of stumulating oil wells by pumped solvent heated in situ to reduce wax obstructions A method of stimulating production from an oil well by removing solid wax deposits from a production zone an electrical resistance heater comprised of a packed bed of spherical heating elements lowered through the tubing on a wireline and placed adjacent ...	01/25/1994

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Class 392/301 - Borehole type