skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Floating insulated conductors for heating subsurface formations

Abstract

A heating system for a subsurface formation includes a conduit located in a first opening in the subsurface formation. Three electrical conductors are located in the conduit. A return conductor is located inside the conduit. The return conductor is electrically coupled to the ends of the electrical conductors distal from the surface of the formation. Insulation is located inside the conduit. The insulation electrically insulates the three electrical conductors, the return conductor, and the conduit from each other.

Inventors:
;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1149915
Patent Number(s):
8,791,396
Application Number:
12/106,065
Assignee:
Shell Oil Company (Houston, TX)
DOE Contract Number:  
AC04-94AL85000Sa
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Burns, David, and Goodwin, Charles R. Floating insulated conductors for heating subsurface formations. United States: N. p., 2014. Web.
Burns, David, & Goodwin, Charles R. Floating insulated conductors for heating subsurface formations. United States.
Burns, David, and Goodwin, Charles R. 2014. "Floating insulated conductors for heating subsurface formations". United States. https://www.osti.gov/servlets/purl/1149915.
@article{osti_1149915,
title = {Floating insulated conductors for heating subsurface formations},
author = {Burns, David and Goodwin, Charles R.},
abstractNote = {A heating system for a subsurface formation includes a conduit located in a first opening in the subsurface formation. Three electrical conductors are located in the conduit. A return conductor is located inside the conduit. The return conductor is electrically coupled to the ends of the electrical conductors distal from the surface of the formation. Insulation is located inside the conduit. The insulation electrically insulates the three electrical conductors, the return conductor, and the conduit from each other.},
doi = {},
url = {https://www.osti.gov/biblio/1149915}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 29 00:00:00 EDT 2014},
month = {Tue Jul 29 00:00:00 EDT 2014}
}

Works referenced in this record:

Underground gasification of coal
patent, January 1976


Apparatus for obtaining uniform gas flow through an in situ oil shale retort
patent, March 1976


Heat-stable calcium-compatible waterflood surfactant
patent, March 1976


Use of materials as waterflood additives
patent, March 1976


Production of alkyl aromatic hydrocarbons
patent, April 1976


Production of bitumen from tar sands
patent, October 1976


Thermal recovery of hydrocarbons from tar sands
patent, November 1976


Method of recovering viscous petroleum from tar sand
patent, November 1976


Recovering viscous petroleum from thick tar sand
patent, November 1976


Recovery of hydrocarbons from coal
patent, December 1976


Heating cables and manufacture thereof
patent, January 1977


Thermal recovery of hydrocarbon from tar sands
patent, February 1977


Crystalline zeolite and method of preparing same
patent, April 1977


Process for in situ retorting of oil shale
patent, April 1977


Extraction from underground coal deposits
patent, August 1977


Process for the manufacture of gasoline
patent, February 1978


Crystalline zeolite ZSM-23 and synthesis thereof
patent, February 1978


Situ coal combustion heat recovery method
patent, May 1978


Conversion of synthesis gas to hydrocarbon mixtures
patent, June 1978


Production of substitute natural gas
patent, January 1979


Process for the manufacture of gasoline
patent, February 1979


Method for in situ heat processing of hydrocarbonaceous formations
patent, February 1979


Process for recovering shale oil
patent, June 1979


Multistage gas generator
patent, April 1980


Solar tracker
patent, July 1980


Petroleum production method
patent, October 1980


Coal gasification method
patent, January 1981


Geothermal petroleum refining
patent, February 1981


Process for the conversion of dimethyl ether
patent, March 1981


Indirect thermal stimulation of production wells
patent, June 1981


Sheath heater
patent, July 1981


Underground gasification of bituminous coal
patent, November 1981


Method for in situ coal gasification operations
patent, December 1981


Crystalline metallophosphate compositions
patent, January 1982


In situ retorting of oil shale
patent, October 1982


Multiple coaxial cable
patent, November 1982


Substoichiometric combustion of low heating value gases
patent, January 1983


Octane and total yield improvement in catalytic cracking
patent, January 1983


Method of thermal-mine working of oil reservoir
patent, January 1983


Method of in situ gasification
patent, May 1983


Electrical cable splice
patent, September 1983


Methanol from coal and natural gas
patent, October 1983


Process for recovering products from tar sand
patent, October 1983


Fiber optic temperature sensing
patent, November 1983


Thermal oil recovery with solvent recirculation
patent, December 1983


Reduction of shale oil pour point
patent, March 1984


Method of underground fuel gasification
patent, April 1984


Treatment of underground beds
patent, April 1984


Crystalline silicoaluminophosphates
patent, April 1984


Apparatus and process for the recovery of oil
patent, April 1984


Heavy oil recovering
patent, June 1984


In situ radio frequency selective heating system
patent, July 1984


In situ shale-oil recovery process
patent, July 1984


Induced current heating probe
patent, May 1986


Recovery of oil by in situ hydrogenation
patent, July 1986


Thermal recovery method for viscous oil
patent, July 1986


Conversion of synthesis gas to diesel fuel and gasoline
patent, August 1986


Well hot oil system
patent, September 1986


Tomographic calibration apparatus
patent, September 1986


Mini-well temperature profiling process
patent, October 1986


Heat treatment with an autoregulating heater
patent, November 1986


Upgrading shale oil by a combination process
patent, November 1986


High resolution tomographic imaging method
patent, January 1987


Sheathed heater
patent, January 1987


In-situ steam drive oil recovery process
patent, February 1987


Reduced resistance skin effect heat generating system
patent, February 1987


Method for induced polarization logging
patent, April 1987


Method and apparatus for determining distribution of fluids
patent, June 1987


Thermally-enhanced oil recovery method and apparatus
patent, September 1987


Method and system for introducing electric current into a well
patent, January 1988


NMR imaging of materials for transport properties
patent, January 1988


NMR imaging of materials
patent, March 1988


Sheet heater
patent, March 1988


Method for monitoring a heater
patent, November 1988


Cable connection
patent, November 1988


Method and apparatus for forming an insulated oil well casing
patent, December 1988


Heating system for rathole oil well
patent, April 1989


Sample holder
patent, May 1989


Contained recovery of oily waste
patent, July 1989


Acoustic pyrometer
patent, July 1989


Self-regulating heater employing reactive components
patent, July 1989


Apparatus for analysis of failure of material
patent, August 1989


Downhole electrical connector for submersible pump
patent, August 1989


Analytical methods and apparatus for measuring the oil content of sponge core
patent, September 1989


Method for analysis of failure of material employing imaging
patent, December 1989


Process for demetallizing and desulfurizing heavy crude oil
patent, December 1989


Method of producing tar sand deposits containing conductive layers
patent, May 1990


Method of methanol production
patent, May 1990


Preparation of low-viscosity improved stable crude oil transport emulsions
patent, January 1991


Wire and cable
patent, January 1991


Method of producing methanol synthesis gas
patent, February 1991


Horizontal well bore system
patent, August 1991


Oil stabilization
patent, October 1991


Downhole combination tool
patent, November 1991


Profile control in enhanced oil recovery
patent, April 1992


Current to power crossover heater control
patent, February 1993


Vacuum method for removing soil contaminants utilizing thermal conduction heating
patent, March 1993


Formation treating
patent, April 1993


Method and apparatus for pumping wells
patent, May 1993


Wire and cable
patent, May 1993


High temperature wellbore cement slurry
patent, July 1993


Surface heating blanket for soil remediation
patent, July 1993


Insulated power cable
patent, July 1993


Molded connector with embedded indicators
patent, September 1993


Spiral wound element for separation
patent, January 1994


Automatic splice
patent, January 1994


Formation treating
patent, February 1994


Oil recovery process
patent, March 1994


Process for recovery of hydrocarbons and rejection of sand
patent, May 1994


Vacuum method for removing soil contaminants utilizing thermal conduction heating
patent, June 1994


Process for recovery of hydrocarbons and rejection of sand
patent, August 1994


Hydrogenation catalyst and process
patent, February 1995


Oil recovery process
patent, February 1995


Cable-sealing mastic material
patent, April 1995


Heat injection process and apparatus
patent, April 1995


Method to cement a wellbore
patent, April 1995


Oil recovery by enhanced imbitition in low permeability reservoirs
patent, May 1995


Heat injection process
patent, May 1995


Heat injection process
patent, July 1995


NMR logging of natural gas reservoirs
patent, March 1996


NMR logging of natural gas in reservoirs
patent, March 1996


Switch controlled, zone-type heating cable and method
patent, April 1996


Heating of solid earthen material, measuring moisture and resistivity
patent, August 1996


Radiant plate heater for treatment of contaminated surfaces
patent, September 1996


Carbonate fuel cell system with thermally integrated gasification
patent, September 1996


Process for extracting hydrocarbons from diatomite
patent, November 1996


Method and apparatus for forming an electrical connection
patent, December 1996


Electrical solder splice connector
patent, January 1997


Method for improving injectivity of fluids in oil reservoirs
patent, May 1997


Process for improving the effectiveness of process catalyst
patent, July 1997


Non-contact method and apparatus for inspection of inertia welds
patent, July 1997


Mechanical splice connector for cable
patent, November 1997


Method of presulfurizing a hydrotreating, hydrocracking or tail gas treating catalyst
patent, November 1997


Process for hydrotreating metal-contaminated hydrocarbonaceous feedstock
patent, April 1998


EMAT probe and technique for weld inspection
patent, June 1998


Oil well heater cable
patent, July 1998


Temperature sensor
patent, August 1998


Sorption cooling process and system
patent, September 1998


Fiber optic linked flame sensor
patent, October 1998


Electrical safety device with conductive polymer sensor
patent, January 1999


Flameless combustor
patent, January 1999


Purged grounded immersion heater
patent, February 1999


Flameless combustor
patent, May 1999


Logging while drilling borehole imaging and dipmeter device
patent, May 1999


Continuous in-situ combination process for upgrading heavy oil
patent, August 1999


Tar sands extraction process
patent, November 1999


Method and devices for jointing cables
patent, November 1999


Remediation method
patent, December 1999


Insulated and/or concentric coiled tubing
patent, January 2000


Flameless combustor
patent, February 2000


Electrical heater
patent, February 2000


Wellbore profiling system
patent, February 2000


Heater well method and apparatus
patent, May 2000


Heater well method and apparatus
patent, June 2000


Synthesis gas production system and method
patent, July 2000


NMR logging of natural gas reservoirs
patent, July 2000


Remediation method
patent, August 2000


Edge detection and seam tracking with EMATs
patent, December 2000


Process for converting gas to liquids
patent, January 2001


Preparation of a hydrotreating catalyst
patent, April 2001


Method and apparatus for de-icing oilwells
patent, July 2001


Electric cable having braidless polymeric ground plane providing fault detection
patent, September 2001


Hydrotreating process using sulfur activated non-calcined catalyst
patent, September 2001


Plasma cutter for auxiliary power output of a power source
patent, November 2001


Expandable tubing for a well bore hole and method of expanding
patent, March 2002


Field upgrading of heavy oil and bitumen
patent, March 2002


Wire connector
patent, April 2002


Multi-crosswell profile 3D imaging and method
patent, May 2002


Process for recovering methane and/or sequestering fluids
patent, July 2002


System and process for secondary hydrocarbon recovery
patent, October 2002


Connecting cord junction
patent, October 2002


Method and apparatus for heating a wellbore
patent, April 2003


Live well heater cable
patent, July 2003


In Situ thermal processing of a coal formation to control product composition
patent, July 2003


In Situ thermal processing of a coal formation to produce a condensate
patent, August 2003


In situ thermal processing of a coal formation and ammonia production
patent, August 2003


Petroleum well having downhole sensors, communication and power
patent, January 2004


In situ thermal processing of a coal formation using a relatively slow heating rate
patent, March 2004


In situ thermal processing of a coal formation leaving one or more selected unprocessed areas
patent, March 2004


In situ thermal processing of a coal formation in reducing environment
patent, March 2004


Drum heater
patent, March 2004


Controllable gas-lift well and valve
patent, April 2004


In situ thermal processing of hydrocarbons within a relatively permeable formation
patent, April 2004


In situ thermal processing of a coal formation by controlling a pressure of the formation
patent, April 2004


In situ thermal processing of a coal formation using a distributed combustor
patent, April 2004


In situ thermal processing of a coal formation and tuning production
patent, May 2004


Production of synthesis gas from a hydrocarbon containing formation
patent, May 2004


Multi-zone resistance heater
patent, May 2004


Situ thermal processing of a hydrocarbon containing formation to control product composition
patent, June 2004


In situ thermal processing of a coal formation using a controlled heating rate
patent, June 2004


Downhole gas separation method and system
patent, June 2004


System and method for fluid flow optimization
patent, July 2004


In situ thermal processing of a coal formation with carbon dioxide sequestration
patent, July 2004


In situ production of synthesis gas from a coal formation through a heat source wellbore
patent, August 2004


Electrical splice connector
patent, August 2004


In situ thermal processing of a hydrocarbon containing formation using exposed metal heat sources
patent, September 2004


Gas and oil production
patent, October 2004


In situ thermal processing of an oil shale formation while inhibiting coking
patent, April 2005


In situ thermal processing of an oil shale formation to produce a desired product
patent, April 2005


Field weldable connections
patent, May 2005


In Situ thermal processing of hydrocarbons within a relatively impermeable formation
patent, July 2005


In situ thermal processing of an oil shale formation in a reducing environment
patent, July 2005


Method for production of hydrocarbons from organic-rich rock
patent, July 2005


In situ thermal processing of an oil shale formation to produce a condensate
patent, August 2005


Production of a blending agent using an in situ thermal process in a relatively permeable formation
patent, September 2005


In situ thermal processing of a hydrocarbon containing formation with a selected hydrogen content
patent, September 2005


In situ thermal processing of an oil shale formation using horizontal heat sources
patent, October 2005


Permanent downhole, wireless, two-way telemetry backbone using redundant repeaters
patent, October 2005


In situ thermal recovery from a relatively permeable formation using gas to increase mobility
patent, November 2005


Upgrading and mining of coal
patent, November 2005


Situ thermal processing of a coal formation using pressure and/or temperature control
patent, December 2005


In situ thermal recovery from a relatively permeable formation
patent, January 2006


Controlled downhole chemical injection
patent, January 2006


In situ thermal processing of an oil shale formation using a pattern of heat sources
patent, January 2006


Forming openings in a hydrocarbon containing formation using magnetic tracking
patent, January 2006


In situ thermal processing of an oil shale formation with a selected property
patent, February 2006


In situ thermal processing of a hydrocarbon containing formation in a reducing environment
patent, February 2006


In situ thermal processing and solution mining of an oil shale formation
patent, February 2006


Conductor-in-conduit heat sources for in situ thermal processing of an oil shale formation
patent, February 2006


In situ thermal processing and remediation of an oil shale formation
patent, February 2006


In situ recovery from a kerogen and liquid hydrocarbon containing formation
patent, March 2006


In situ thermal processing of an oil shale formation using a natural distributed combustor
patent, March 2006


Thermal processing of an oil shale formation to increase permeability of the formation
patent, May 2006


In situ thermal processing of a relatively permeable formation in a reducing environment
patent, May 2006


In situ thermal processing of an oil shale formation using a controlled heating rate
patent, May 2006


In situ thermal processing of a relatively impermeable formation using an open wellbore
patent, May 2006


In situ thermal recovery from a relatively permeable formation with quality control
patent, May 2006


Seismic monitoring of in situ conversion in a hydrocarbon containing formation
patent, May 2006


In situ thermal processing through an open wellbore in an oil shale formation
patent, May 2006


In situ thermal recovery from a relatively permeable formation with controlled production rate
patent, June 2006


In situ thermal processing of a tar sands formation
patent, June 2006


In situ recovery from lean and rich zones in a hydrocarbon containing formation
patent, June 2006


In situ recovery from a hydrocarbon containing formation using barriers
patent, July 2006


In situ thermal processing of an oil reservoir formation
patent, July 2006


In situ production of a blending agent from a hydrocarbon containing formation
patent, August 2006


In situ thermal processing of a coal formation with heat sources located at an edge of a coal layer
patent, August 2006


In situ thermal processing of a relatively permeable formation while controlling pressure
patent, August 2006


In situ thermal processing of a coal formation using a movable heating element
patent, August 2006


In situ thermal processing of a heavy oil diatomite formation
patent, September 2006


Conductor-in-conduit temperature limited heaters
patent, October 2006


Thermal processes for subsurface formations
patent, October 2006


System and method for heat recovery from geothermal source of heat
patent, October 2006


Acid gas disposal method
patent, October 2006


Treatment of a hydrocarbon containing formation after heating
patent, October 2006


Use of downhole high pressure gas in a gas-lift well and associated methods
patent, December 2006


Installation and use of removable heaters in a hydrocarbon containing formation
patent, January 2007


Three-conductor cable
patent, January 2007


Oil well casting electrical power pick-off points
patent, January 2007


In situ thermal processing of an oil shale formation using a pattern of heat sources
patent, June 2007


Wireless reservoir production control
patent, August 2007


Inhibiting effects of sloughing in wellbores
patent, April 2008


Thermal processes for subsurface formations
patent, April 2008


Selective electromagnetic production tool
patent, July 2008


Systems and methods for producing oil and/or gas
patent, September 2008


Temperature limited heaters using modulated DC power
patent, October 2008


In situ recovery from a hydrocarbon containing formation
patent, December 2008


Temperature limited heaters with relatively constant current
patent, January 2009


Variable frequency temperature limited heaters
patent, February 2009


Low temperature barrier wellbores formed using water flushing
patent, March 2009


Double barrier system for an in situ conversion process
patent, May 2009


Wellhead with non-ferromagnetic materials
patent, May 2009


Heating hydrocarbon containing formations in a checkerboard pattern staged process
patent, June 2009


Solution mining systems and methods for treating hydrocarbon containing formations
patent, July 2009


In situ conversion process utilizing a closed loop heating system
patent, August 2009


Low temperature monitoring system for subsurface barriers
patent, August 2009


Methods of producing alkylated hydrocarbons from an in situ heat treatment process liquid
patent, September 2009


Methods of cracking a crude product to produce additional crude products
patent, September 2009


Methods of hydrotreating a liquid stream to remove clogging compounds
patent, September 2009


Compositions produced using an in situ heat treatment process
patent, October 2009


Heating tar sands formations to visbreaking temperatures
patent, December 2009


Cogeneration systems and processes for treating hydrocarbon containing formations
patent, December 2009


Thermal processes for subsurface formations
patent, January 2010


Heating tar sands formations while controlling pressure
patent, January 2010


Treating tar sands formations with karsted zones
patent, March 2010


Creating and maintaining a gas cap in tar sands formations
patent, March 2010


Method of producing drive fluid in situ in tar sands formations
patent, March 2010


Wax barrier for use with in situ processes for treating formations
patent, April 2010


Moving hydrocarbons through portions of tar sands formations with a fluid
patent, May 2010


Active cable for wellbore heating and distributed temperature sensing
patent, June 2010


Treating tar sands formations with dolomite
patent, June 2010


Creating fluid injectivity in tar sands formations
patent, June 2010


In situ thermal processing of an oil shale formation containing carbonate minerals
patent, June 2010


In situ method and system for extraction of oil from shale
patent, June 2010


High strength alloys
patent, August 2010


Non-ferromagnetic overburden casing
patent, September 2010


In situ recovery from a hydrocarbon containing formation
patent, September 2010


Grouped exposed metal heaters
patent, November 2010


Gas injection to inhibit migration during an in situ heat treatment process
patent, November 2010


Drilling subsurface wellbores with cutting structures
patent, November 2010


In situ recovery from residually heated sections in a hydrocarbon containing formation
patent, December 2010


Subsurface connection methods for subsurface heaters
patent, December 2010


In situ oxidation of subsurface formations
patent, January 2011


Alternate energy source usage for in situ heat treatment processes
patent, March 2011


Methods and systems for producing fluid from an in situ conversion process
patent, May 2011


Thermal processes for subsurface formations
patent, May 2011


Downhole burner systems and methods for heating subsurface formations
patent, May 2011


Varying properties along lengths of temperature limited heaters
patent, July 2011


Parallel heater system for subsurface formations
patent, October 2011


Treatment of gas from an in situ conversion process
patent, December 2011


Sand control method using porous particulate materials
patent, February 2012


Cryogenic treatment of gas
patent, April 2012


Methods of making transportation fuel
patent, April 2012


In situ method and system for extraction of oil from shale
patent, April 2012


Induction heaters used to heat subsurface formations
patent, April 2012


Using tunnels for treating subsurface hydrocarbon containing formations
patent, April 2012


Creating fluid injectivity in tar sands formations
patent, June 2012


High strength alloys
patent, June 2012


Temperature limited heaters for heating subsurface formations or wellbores
patent, June 2012


Insulated conductor temperature limited heaters
patent, July 2012


In situ recovery from a hydrocarbon containing formation
patent, July 2012


Methods and systems for producing fluid from an in situ conversion process
patent, July 2012


Grouped exposed metal heaters
patent, July 2012


High voltage temperature limited heaters
patent, August 2012


Offset barrier wells in subsurface formations
patent, September 2012


Circulated heated transfer fluid systems used to treat a subsurface formation
patent, September 2012


Methods for forming wellbores in heated formations
patent, September 2012


Wellbore manufacturing processes for in situ heat treatment processes
patent, December 2012


Recovering energy from a subsurface formation
patent, December 2012


Temperature limited heaters with high power factors
patent, January 2013


Methods for assessing a temperature in a subsurface formation
patent, January 2013


Production from multiple zones of a tar sands formation
patent, February 2013


Irregular pattern treatment of a subsurface formation
patent, May 2013


Compositions produced using an in situ heat treatment process
patent, May 2013


In situ recovery from a hydrocarbon containing formation
patent, July 2013


Variable thickness insulated conductors
patent, July 2013


Method for production of hydrocarbons from organic-rich rock
patent-application, December 2001


In situ thermal processing of a coal formation to produce a selected gas mixture
patent-application, March 2002


In situ thermal processing of a hydrocarbon containing formation using insulated conductor heat sources
patent-application, March 2002


Toroidal choke inductor for wireless communication and control
patent-application, March 2002


In situ thermal processing of a hydrocarbon containing formation using distributed combustor heat sources
patent-application, March 2002


In situ thermal processing of a coal formation to produce a mixture of olefins, oxygenated hydrocarbons, and aromatic hydrocarbons
patent-application, March 2002


In situ thermal processing of a hydrocarbon containing formation to produce a selected mixture
patent-application, April 2002


In situ thermal processing of a hydrocarbon containing formation producing a mixture with oxygenated hydrocarbons
patent-application, June 2002


Conduit pulling apparatus and method for use in horizontal drilling
patent-application, August 2002


Slurry hydroprocessing for heavy oil upgrading using supported slurry catalysts
patent-application, August 2002


Method for pumping fluids
patent-application, October 2002


Unbalanced Three Phase Delta Power Measurement Apparatus and Method
patent-application, January 2003


Apparatus, method and system for single well solution-mining
patent-application, February 2003


In situ thermal processing of a relatively impermeable formation in a reducing environment
patent-application, May 2003


In situ thermal processing of a coal formation to produce pyrolsis products
patent-application, May 2003


Pro-ecological mining system
patent-application, July 2003


Removable heat sources for in situ thermal processing of an oil shale formation
patent-application, August 2003


Steam generator for a PEM fuel cell power plant
patent-application, August 2003


In situ thermal processing of a hydrocarbon containing formation and upgrading of produced fluids prior to further treatment
patent-application, October 2003


In situ recovery from a hydrocarbon containing formation using one or more simulations
patent-application, October 2003


System and method for subterranean access
patent-application, February 2004


Staged and/or patterned heating during in situ thermal processing of a hydrocarbon containing formation
patent-application, July 2004


Insulated conductor temperature limited heaters
patent-application, July 2004


High voltage temperature limited heaters
patent-application, July 2004


Forming wellbores using acoustic methods
patent-application, July 2004


Temperature limited heaters for heating subsurface formations or wellbores
patent-application, July 2004


Heater Cable and method for manufacturing
patent-application, August 2004


Variable frequency temperature limited heaters
patent-application, January 2005


Shielding structure of shielding electric wire
patent-application, January 2005


Systems and methods of producing a crude product
patent-application, June 2005


Systems, methods, and catalysts for producing a crude product
patent-application, June 2005


Three-conductor cable
patent-application, August 2005


Start-up of temperature limited heaters using direct current (DC)
patent-application, December 2005


Temperature limited heaters using modulated DC power
patent-application, December 2005


Temperature limited heaters with thermally conductive fluid used to heat subsurface formations
patent-application, December 2005


Reducing viscosity of oil for production from a hydrocarbon containing formation
patent-application, December 2005


Vacuum pumping of conductor-in-conduit heaters
patent-application, December 2005


Variable frequency temperature limited heaters
patent-application, December 2005


Triaxial temperature limited heater
patent-application, December 2005


Inhibiting reflux in a heated well of an in situ conversion system
patent-application, December 2005


Temperature limited heaters with high power factors
patent-application, December 2005


Temperature limited heaters with relatively constant current
patent-application, January 2006


Method and apparatus for making a middle distillate product and lower olefins from a hydrocarbon feedstock
patent-application, August 2006


Hydrocarbon cracking process for converting gas oil preferentially to middle distillate and lower olefins
patent-application, August 2006


In situ thermal processing of an oil shale formation using a pattern of heat sources
patent-application, September 2006


Systems, methods, and catalysts for producing a crude product
patent-application, October 2006


Systems and methods for producing oil and/or gas
patent-application, November 2006


Methods for Producing a Total Product in the Presence of Sulfur
patent-application, December 2006


Subsurface electrical heaters using nitride insulation
patent-application, December 2006


Method for Producing a Crude Product with Reduced Tan
patent-application, January 2007


Method for underground recovery of hydrocarbons
patent-application, March 2007


In situ conversion process utilizing a closed loop heating system
patent-application, March 2007


Subsurface connection methods for subsurface heaters
patent-application, March 2007


Varying properties along lengths of temperature limited heaters
patent-application, March 2007


Cogeneration systems and processes for treating hydrocarbon containing formations
patent-application, May 2007


Low temperature barrier wellbores formed using water flushing
patent-application, May 2007


Treatment of gas from an in situ conversion process
patent-application, May 2007


Methods of hydrotreating a liquid stream to remove clogging compounds
patent-application, June 2007


Subsurface heaters with low sulfidation rates
patent-application, June 2007


Thermal processes for subsurface formations
patent-application, June 2007


Solution mining and heating by oxidation for treating hydrocarbon containing formations
patent-application, June 2007


Methods of producing alkylated hydrocarbons from an in situ heat treatment process liquid
patent-application, June 2007


Methods of cracking a crude product to produce additional crude products
patent-application, June 2007


Methods of filtering a liquid stream produced from an in situ heat treatment process
patent-application, June 2007


Grouped exposed metal heaters
patent-application, June 2007


Double barrier system for an in situ conversion process
patent-application, June 2007


Low temperature monitoring system for subsurface barriers
patent-application, June 2007


Low temperature barriers for use with in situ processes
patent-application, June 2007


Solution mining systems and methods for treating hydrocarbon containing formations
patent-application, September 2007


In situ co-development of oil shale with mineral recovery
patent-application, October 2007


Compositions produced using an in situ heat treatment process
patent-application, December 2007


Wellhead with non-ferromagnetic materials
patent-application, December 2007


Kerogen Extraction From Subterranean Oil Shale Resources
patent-application, January 2008


Temperature limited heater with a conduit substantially electrically isolated from the formation
patent-application, January 2008


Non-ferromagnetic overburden casing
patent-application, January 2008


Method of Drilling from a Shaft for Underground Recovery of Hydrocarbons
patent-application, January 2008


Methods of producing transportation fuel
patent-application, February 2008


Adjusting alloy compositions for selected properties in temperature limited heaters
patent-application, February 2008


Temperature limited heaters using phase transformation of ferromagnetic material
patent-application, February 2008


Welding shield for coupling heaters
patent-application, February 2008


High strength alloys
patent-application, February 2008


Liquid Metal Heat Exchanger for Efficient Heating of Soils and Geologic Formations
patent-application, April 2008


Method of Heating Hydrocarbons
patent-application, April 2008


Varying heating in dawsonite zones in hydrocarbon containing formations
patent-application, May 2008


Producing drive fluid in situ in tar sands formations
patent-application, June 2008


Treating tar sands formations with karsted zones
patent-application, June 2008


In situ heat treatment process utilizing a closed loop heating system
patent-application, June 2008


Treating tar sands formations with dolomite
patent-application, June 2008


Using geothermal energy to heat a portion of a formation for an in situ heat treatment process
patent-application, June 2008


Sulfur barrier for use with in situ processes for treating formations
patent-application, July 2008


Alternate energy source usage for in situ heat treatment processes
patent-application, July 2008


Sour gas injection for use with in situ heat treatment
patent-application, July 2008


Power systems utilizing the heat of produced formation fluid
patent-application, July 2008


Wax barrier for use with in situ processes for treating formations
patent-application, August 2008


Gas injection to inhibit migration during an in situ heat treatment process
patent-application, September 2008


Heating hydrocarbon containing formations in a checkerboard pattern staged process
patent-application, September 2008


Heating hydrocarbon containing formations in a spiral startup staged sequence
patent-application, September 2008


Creating fluid injectivity in tar sands formations
patent-application, September 2008


Temperature limited heater utilizing non-ferromagnetic conductor
patent-application, September 2008


Heating tar sands formations while controlling pressure
patent-application, November 2008


Downhole burner wells for in situ conversion of organic-rich rock formations
patent-application, November 2008


Heating tar sands formations to visbreaking temperatures
patent-application, November 2008


Moving hydrocarbons through portions of tar sands formations with a fluid
patent-application, January 2009


Creating and maintaining a gas cap in tar sands formations
patent-application, January 2009


Drilling Subsurface Wellbores with Cutting Structures
patent-application, March 2009


Downhole Burner System and Methods for Heating Subsurface Formations
patent-application, April 2009


Wellbore Manufacturing Processes for In Situ Heat Treatment Processis
patent-application, April 2009


In Situ Recovery from Residually Heated Sections in a Hydrocarbon Containing Formation
patent-application, April 2009


Molten Salt as a Heat Transfer Fluid for Heating a Subsurface Formation
patent-application, April 2009


Heating Systems for Heating Subsurface Formations
patent-application, April 2009


Production from Multiple Zones of a Tar Sands Formation
patent-application, April 2009


In Situ Heat Treatment of a Tar Sands Formation After Drive Process Treatment
patent-application, April 2009


In situ recovery from a hydrocarbon containing formation
patent-application, April 2009


Electrically Isolating Insulated Conductor Heater
patent-application, May 2009


Continuous Subsurface Heater Temperature Measurement
patent-application, July 2009


In Situ Oxidation of Subsurface Formations
patent-application, August 2009


Multi-Step Heater Deployment in a Subsurface Formation
patent-application, August 2009


Induction Heaters Used to Heat Subsurface Formations
patent-application, August 2009


Methods for Forming Wellbores in Heated Formations
patent-application, August 2009


Methods for Forming Long Subsurface Heaters
patent-application, August 2009


Cryogenic Treatment of Gas
patent-application, August 2009


Heating Subsurface Formations by Oxidizing Fuel on a Fuel Carrier
patent-application, August 2009


High Temperature Methods for Forming Oxidizer Fuel
patent-application, August 2009


Irregular Spacing of Heat Sources for Treating Hydrocarbon Containing Formations
patent-application, August 2009


Variable Voltage Load Tap Changing Transformer
patent-application, August 2009


Solution Mining and In Situ Treatment of Nahcolite Beds
patent-application, August 2009


Method for Generation of Subsurface Heat for Treatment of a Hydrocarbon Containing Formation
patent-application, October 2009


Hydrocarbon Production from Mines and Tunnels Used in Treating Subsurface Hydrocarbon Containing Formations
patent-application, October 2009


Semiconductor Device
patent-application, February 2010


Mines and Tunnels for Use in Treating Subsurface Hydrocarbon Containing Formations
patent-application, March 2010


Circulated Heated Transfer Fluid Heating of Subsurface Hydrocarbon Formations
patent-application, April 2010


Circulated Heated Transfer Fluid Systems Used to Treat A Subsurface Formation
patent-application, August 2010


Recovering Energy from a Subsurface Formation
patent-application, October 2010


Heated Liners for Treating Subsurface Hydrocarbon Containing Formations
patent-application, October 2010


In Situ Method and System for Extraction of Oil from Shale
patent-application, November 2010


Irregular Pattern Treatment of a Subsurface Formation
patent-application, February 2011


Optimized Well Spacing For In Situ Shale Oil Development
patent-application, June 2011


Insulated Conductor Heaters with Semiconductor Layers
patent-application, October 2011


Helical Winding of Insulated Conductor Heaters for Installation
patent-application, October 2011


Variable Thickness Insulated Conductors
patent-application, October 2011


Insulating Blocks and Methods for Installation in Insulated Conductor Heaters
patent-application, October 2011


Mineral Insulated Skin Effect Heating Cable
patent-application, January 2012


Temperature Limited Heater Utilizing Non-Ferromagnetic Conductor
patent-application, August 2012


Systems for Joining Insulated Conductors
patent-application, October 2012


Some Effects of Pressure on Oil-Shale Retorting
journal, September 1969


Evaluation of downhole electric impedance heating systems for paraffin control in oil wells
journal, January 1992


Molecular Mechanism of Oil Shale Pyrolysis in Nitrogen and Hydrogen Atmospheres
book, August 1983


The Characteristics of a Low Temperature In Situ Shale Oil
conference, April 2013


Monitoring oil shale retorts by off-gas alkenealkane ratios
journal, June 1980


The Thermal and Structural Properties of a Hanna Basin Coal
journal, June 1984


On the mechanism of kerogen pyrolysis
journal, October 1984


Electrical Heating With Horizontal Wells, The Heat Transfer Problem
conference, April 2013


Converter-fed subsea motor drives
journal, January 1996


The case for frequency domain PD testing in the context of distribution cable
journal, July 2003


Retorting and Combustion Processes in Surface Oil-Shale Retorts
journal, November 1981


Operating Laboratory Oil Shale Retorts In An In-Situ Mode
conference, April 2013


Pyrolysis kinetics for Green River oil shale from the saline zone
journal, October 1983


Application of a self-adaptive detector system on a triple quadrupole MS/MS to high explosives and sulfur-containing pyrolysis gases from oil shale
journal, September 1984


Kinetics of oil generation from Colorado oil shale
journal, June 1978


Works referencing / citing this record:

Forming insulated conductors using a final reduction step after heat treating
patent, May 2017


Variable pitch resistance coil heater
patent, May 2016


Method for manufacturing a flexible heater
patent, March 2016


Forming insulated conductors using a final reduction step after heat treating
patent, December 2015


Variable pitch resistance coil heater
patent, August 2015