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Title: Alternate energy source usage methods for in situ heat treatment processes

Patent ·
OSTI ID:1159976
; ;

Systems, methods, and heaters for treating a subsurface formation are described herein. At least one method for providing power to one or more subsurface heaters is described herein. The method may include monitoring one or more operating parameters of the heaters, the intermittent power source, and a transformer coupled to the intermittent power source that transforms power from the intermittent power source to power with appropriate operating parameters for the heaters; and controlling the power output of the transformer so that a constant voltage is provided to the heaters regardless of the load of the heaters and the power output provided by the intermittent power source.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
Assignee:
Shell Oil Company (Houston, TX)
Patent Number(s):
8,857,506
Application Number:
13/902,129
OSTI ID:
1159976
Resource Relation:
Patent File Date: 2013 May 24
Country of Publication:
United States
Language:
English

References (841)

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Process for recovering and upgrading hydrocarbons from oil shale and tar sands patent April 1976
Production of alkyl aromatic hydrocarbons patent April 1976
In situ retorting of oil shale patent April 1976
Method and apparatus for in situ gasification of coal and the commercial products derived therefrom patent April 1976
Recovery of hydrocarbons by in situ thermal extraction patent May 1976
In situ solution mining of coal patent August 1976
Method of power generation via coal gasification and liquid hydrocarbon synthesis patent October 1976
Hydrocarbon recovery from earth strata patent October 1976
Production of bitumen from tar sands patent October 1976
Serially burning and pyrolyzing to produce shale oil from a subterranean oil shale patent October 1976
Motor fuel production with fluid catalytic cracking of high-boiling alkylate patent November 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
Method of igniting in situ oil shale retort with fuel rich flue gas patent February 1977
Thermal recovery of hydrocarbon from tar sands patent February 1977
Extraction of hydrocarbons in situ from underground hydrocarbon deposits patent February 1977
Producing thin seams of coal in situ patent March 1977
Recarbonation of spent oil shale patent April 1977
Crystalline zeolite and method of preparing same patent April 1977
Process for in situ retorting of oil shale patent April 1977
System for recovering viscous petroleum from thick tar sand patent April 1977
In situ gasification of solid hydrocarbon materials in a subterranean formation patent May 1977
Method of recovering oil and water from in situ oil shale retort flue gas patent June 1977
Method of recovering energy from subsurface petroleum reservoirs patent June 1977
Method for initiating an in-situ recovery process by the introduction of oxygen patent August 1977
Extraction from underground coal deposits patent August 1977
Radar system for detecting slowly moving targets patent September 1977
Recovery of hydrocarbons from partially exhausted oil wells by mechanical wave heating patent September 1977
Process for in situ conversion of coal or the like into oil and gas patent November 1977
Apparatus and method for the recovery of fuel products from subterranean deposits of carbonaceous matter using a plasma arc patent January 1978
Process for the manufacture of gasoline patent February 1978
Crystalline zeolite ZSM-23 and synthesis thereof patent February 1978
Thermomechanical fracture for recovery system in oil shale deposits patent April 1978
Method of producing viscous materials from subterranean formations patent April 1978
Process for the gasification of coal in situ patent May 1978
Methods of fluidized production of coal in situ patent May 1978
Producing methane from coal in situ patent May 1978
In situ process for recovery of carbonaceous materials from subterranean deposits patent May 1978
Methods of fluidized production of coal in situ patent June 1978
Removal of sulfur dioxide from process gas using treated oil shale and water patent June 1978
Conversion of synthesis gas to hydrocarbon mixtures patent June 1978
Generating medium BTU gas from coal in situ patent July 1978
Minimizing environmental effects in production and use of coal patent September 1978
Method and apparatus for recovery of fluids produced in in-situ retorting of oil shale patent October 1978
Method and apparatus for isolating and treating subsurface stratas patent November 1978
Process for preparing methane rich gases patent December 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
Two-stage removal of sulfur dioxide from process gas using treated oil shale patent February 1979
Apparatus and method for in situ heat processing of hydrocarbonaceous formations patent March 1979
Pressure-balanced oil recovery process for water productive oil shale patent April 1979
Process for recovering and upgrading hydrocarbons from oil shale patent April 1979
Phase-angle regulator patent May 1979
Process for recovering shale oil patent June 1979
Enhanced recoveries of petroleum and hydrogen from underground reservoirs patent January 1980
Method for determining the position and inclination of a flame front during in situ combustion of an oil shale retort patent January 1980
Underground linkage of wells for production of coal in situ patent January 1980
In situ combustion process for the recovery of liquid carbonaceous fuels from subterranean formations patent February 1980
Method for production of organic products from kerogen patent March 1980
Method for preconditioning a subterranean oil-bearing formation prior to in-situ combustion patent March 1980
Process for in situ coal gasification patent April 1980
Multistage gas generator patent April 1980
Petroleum production method patent October 1980
Enhanced oil recovery using electrical means patent October 1980
Solution mining water soluble salts at high temperatures patent November 1980
Coal gasification method patent January 1981
Geothermal petroleum refining patent February 1981
Generating electricity from coal in situ patent February 1981
In situ combustion process for the recovery of liquid carbonaceous fuels from subterranean formations patent February 1981
Method of recovering petroleum and bitumen from subterranean reservoirs patent February 1981
Process for the conversion of dimethyl ether patent March 1981
Alternating current electrically resistive heating element having intrinsic temperature control patent March 1981
Shale oil recovery patent May 1981
In situ combustion process for the recovery of liquid carbonaceous fuels from subterranean formations patent June 1981
AC Resonance transformer patent June 1981
Indirect thermal stimulation of production wells patent June 1981
Process for producing methanol patent July 1981
Method for monitoring the recovery of minerals from shallow geological formations patent August 1981
Apparatus and method for in situ heat processing of hydrocarbonaceous formations patent September 1981
Borehole mining of solid mineral resources patent September 1981
Subterranean cavity chimney development for connecting solution mined cavities patent September 1981
Utilization of energy obtained by substoichiometric combustion of low heating value gases patent November 1981
Underground gasification of bituminous coal patent November 1981
Arrangement of wells for producing subsurface viscous petroleum patent December 1981
Oil recovery method and apparatus patent December 1981
Method for in situ coal gasification operations patent December 1981
Crystalline metallophosphate compositions patent January 1982
Uranium leeching process and insitu mining patent January 1982
Process for recovering products from oil shale patent April 1982
Multiple-site underground magnetic heating of hydrocarbons patent August 1982
In situ retorting of oil shale patent October 1982
Method and apparatus for determining shaliness and oil saturations in earth formations using induced polarization in the frequency domain patent November 1982
Substoichiometric combustion of low heating value gases patent December 1982
Substoichiometric combustion of low heating value gases patent January 1983
Octane and total yield improvement in catalytic cracking patent January 1983
Substoichiometric combustion of low heating value gases using different platinum catalysts patent March 1983
System for transmitting ultrasonic energy through core samples patent April 1983
Substoichiometric combustion of low heating value gases patent May 1983
Method of in-situ retorting of carbonaceous material for recovery of organic liquids and gases patent May 1983
Method of retorting oil shale by velocity flow of super-heated air patent May 1983
Downhole steam generator with improved preheating, combustion and protection features patent May 1983
Hydrocarbon conversion process patent June 1983
Method of treating reservoirs containing very viscous crude oil or bitumen patent June 1983
Method for determining the extent of subsurface reaction involving acoustic signals patent June 1983
Apparatus and method for time-domain tracking of high-speed chemical reactions patent August 1983
Process for coal liquefaction employing selective coal feed patent August 1983
Method for correcting an electrical log for the presence of shale in a formation patent August 1983
Method for controlling the flow of subterranean water into a selected zone in a permeable subterranean carbonaceous deposit patent August 1983
Single-ended recuperative radiant tube assembly and method patent August 1983
Modified in situ retorting of oil shale patent August 1983
Methanol from coal and natural gas patent October 1983
Process for recovering products from tar sand patent October 1983
In-situ combustion method for recovery of heavy oil utilizing oxygen and carbon dioxide as initial oxidant patent October 1983
Electrode unit for electrically heating underground hydrocarbon deposits patent October 1983
Electrothermal process for recovering hydrocarbons patent November 1983
Fiber optic temperature sensing patent November 1983
Thermal oil recovery with solvent recirculation patent December 1983
Electric heating apparatus for de-icing pipes patent December 1983
Ignition procedure and process for in situ retorting of oil shale patent January 1984
Method for disposing of waste materials patent January 1984
Oil recovery method patent February 1984
Reduction of shale oil pour point patent March 1984
Method of underground fuel gasification patent April 1984
Crystalline silicoaluminophosphates patent April 1984
Treatment of underground beds patent April 1984
Apparatus and process for the recovery of oil patent April 1984
In situ recovery of oil from oil shale patent April 1984
Continuous borehole formed horizontally through a hydrocarbon producing formation patent May 1984
Method and apparatus for producing viscous or waxy crude oils patent May 1984
Recovery of hydrocarbons from deep underground deposits of tar sands patent June 1984
Process for the geoconversion of coal into oil patent June 1984
Heavy oil recovering patent June 1984
In situ radio frequency selective heating system patent July 1984
Transient response process for detecting in situ retorting conditions patent July 1984
In situ shale-oil recovery process patent July 1984
Method for directionally drilling a first well to intersect a second well patent July 1984
Advancing heated annulus steam drive patent July 1984
Method and apparatus for treatment of subsurface formations patent October 1984
Method and apparatus for recovery of oil, gas and mineral deposits by panel opening patent October 1984
Method for recovery of viscous hydrocarbons by electromagnetic heating in situ patent December 1984
Recovery of liquid hydrocarbons from oil shale by electromagnetic heating in situ patent December 1984
Viscous oil production using electrical current heating and lateral drain holes patent December 1984
Method for oil recovery by in situ exfoliation drive patent January 1985
Emission controller for indirect fired downhole steam generators patent February 1985
Apparatus and method for in situ controlled heat processing of hydrocarbonaceous formations with a controlled parameter line patent February 1985
Process for the preparation of a Fischer-Tropsch catalyst and preparation of hydrocarbons from syngas patent February 1985
Titanium-containing molecular sieves patent February 1985
In-situ recovery of viscous hydrocarbonaceous crude oil patent February 1985
Method of in-situ hydrogenation of carbonaceous material patent February 1985
Sealing system for a well bore in which a hot fluid is circulated patent April 1985
Method of overlaying sulphur concrete on horizontal and vertical surfaces patent May 1985
Method of heating an oil shale formation patent June 1985
Single well stimulation for the recovery of liquid hydrocarbons from subsurface formations patent June 1985
Method for maximum in-situ visbreaking of heavy oil patent July 1985
Method of underground conversion of coal patent August 1985
Method of determining drilling fluid invasion patent September 1985
Method of correlating a core sample with its original position in a borehole patent September 1985
Conduction heating of hydrocarbonaceous formations patent October 1985
Conversion of coal to electricity patent October 1985
Heat exchanger antifoulant patent November 1985
Pulsed in situ retorting in an array of oil shale retorts patent November 1985
Formation-tailored method and apparatus for uniformly heating long subterranean intervals at high temperature patent February 1986
Method of imaging the atomic number of a sample patent February 1986
Heater cable installation patent February 1986
In-situ gasification of tar sands utilizing a combustible gas patent March 1986
Method and apparatus for combating encroachment by in situ treated formations patent March 1986
Method and device for detecting a specific acoustic spectral feature patent March 1986
Method of using seismic data to monitor firefloods patent March 1986
Method and apparatus for producing viscous hydrocarbons from a subterranean formation patent March 1986
Apparatus for focused electrode induced polarization logging patent April 1986
Apparatus for positioning a sample in a computerized axial tomographic scanner patent April 1986
Well treating process for installing a cable bundle containing strands of changing diameter patent April 1986
Hydrocarbon stratum retorting means and method patent June 1986
Recovery of oil by in situ hydrogenation patent July 1986
Method for excavating a large diameter shaft into the earth and at least partially through an oil-bearing formation patent July 1986
Vibratory signal sweep seismic prospecting method and apparatus patent July 1986
Thermal recovery method for viscous oil patent July 1986
Method for operating a production well in an oxygen driven in-situ combustion oil recovery process patent July 1986
Upgrading shale oil by a combination process patent August 1986
Conversion of synthesis gas to diesel fuel and gasoline patent August 1986
Medium-load power-generating plant with integrated coal gasification plant patent September 1986
Well hot oil system patent September 1986
Tomographic calibration apparatus patent September 1986
Mini-well temperature profiling process patent October 1986
Progressive sequence for viscous oil recovery patent November 1986
Heat treatment with an autoregulating heater patent November 1986
Upgrading shale oil by a combination process patent November 1986
Metal oversheathed electrical resistance heater patent December 1986
High resolution tomographic imaging method patent January 1987
In situ retorting of oil shale with pulsed water purge patent January 1987
In-situ steam drive oil recovery process patent February 1987
Electrode well and method of completion patent February 1987
In-situ method for determining pore size distribution, capillary pressure and permeability patent February 1987
Reduced resistance skin effect heat generating system patent February 1987
Enhanced well production patent March 1987
Method for induced polarization logging patent April 1987
Electrically stimulated well production system with flexible tubing conductor patent May 1987
Method and apparatus for enhancing liquid hydrocarbon production from a single borehole in a slowly producing formation by non-uniform heating through optimized electrode arrays surrounding the borehole patent May 1987
Method of underground conversion of coal patent May 1987
Combination air-blown and oxygen-blown underground coal gasification process patent May 1987
Method of analyzing fluid saturation using computerized axial tomography patent May 1987
Simultaneous recovery of crude from multiple zones in a reservoir patent June 1987
Method and apparatus for determining distribution of fluids patent June 1987
Producing hydrocarbons through successively perforated intervals of a horizontal well between two vertical wells patent July 1987
Dewaxing catalysts and processes employing titanoaluminosilicate molecular sieves patent August 1987
Recovery of oil by in-situ combustion followed by in-situ hydrogenation patent September 1987
Thermally-enhanced oil recovery method and apparatus patent September 1987
Autoregulating, electrically shielded heater patent September 1987
Enhanced recovery of hydrocarbonaceous fluids oil shale patent October 1987
Method of monitoring a heater for faults patent October 1987
Shielded heating element having intrinsic temperature control patent October 1987
Heating rate variant elongated electrical resistance heater patent November 1987
Heavy oil recovery process patent November 1987
Method and system for introducing electric current into a well patent January 1988
Slotted autoregulating heater patent January 1988
NMR imaging of materials for transport properties patent January 1988
NMR imaging of materials patent March 1988
Time-domain induced polarization logging method and apparatus with gated amplification level patent March 1988
Sheet heater patent March 1988
Low pressure process for C.sub.3.sup.+ liquids recovery from process product gas patent March 1988
In-situ induced polarization method for determining formation permeability patent May 1988
Acoustic measurements in rock formations for determining fracture orientation patent May 1988
Autoregulating heater patent June 1988
Method for producing natural gas from a coal seam patent July 1988
System for temperature profile measurement in large furnances and kilns and method therefor patent August 1988
Method of recovering viscous oil from reservoirs with multiple horizontal zones patent August 1988
Determining multiphase saturations by NMR imaging of multiple nuclides patent September 1988
Induced polarization method and apparatus for distinguishing dispersed and laminated clay in earth formations patent September 1988
Apparatus and method for methanol production using a fuel cell to regulate the gas composition entering the methanol synthesizer patent September 1988
Method and apparatus for conversion of coal in situ patent October 1988
Method for monitoring a heater patent November 1988
Disposal of produced formation fines during oil recovery patent November 1988
Self-regulating porous heater device patent December 1988
Three magnet casing collar locator patent February 1989
High power self-regulating heater patent March 1989
System for recovery of petroleum from petroleum impregnated media patent April 1989
Process for converting heavy crudes, tars, and bitumens to lighter products in the presence of brine at supercritical conditions patent April 1989
Heating system for rathole oil well patent April 1989
Reverse circulation bit apparatus patent April 1989
Sample holder patent May 1989
In situ chemical stimulation of diatomite formations patent May 1989
Process for minimizing fouling of processing equipment patent June 1989
Contained recovery of oily waste patent July 1989
Acoustic pyrometer patent July 1989
Self-regulating heater employing reactive components patent July 1989
Well installation in which electrical current is supplied for a source at the wellhead to an electrically responsive device located a substantial distance below the wellhead patent August 1989
Apparatus for analysis of failure of material patent August 1989
Recovery of oil from oil-bearing formation by continually flowing pressurized heated gas through channel alongside matrix patent August 1989
Closed cryogenic barrier for containment of hazardous material migration in the earth 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
Conductively heating a subterranean oil shale to create permeability and subsequently produce oil patent December 1989
Method for determining capillary pressure and relative permeability by imaging patent January 1990
Pulsed in situ exothermic shock wave and retorting process for hydrocarbon recovery and detoxification of selected wastes patent January 1990
System for recovery of petroleum from petroleum impregnated media patent April 1990
In situ thermal waste disposal system patent April 1990
Method of producing tar sand deposits containing conductive layers patent May 1990
Method of methanol production patent May 1990
Method and apparatus for shale gas recovery patent May 1990
Closed cryogenic barrier for containment of hazardous material migration in the earth patent December 1990
Use of CO.sub.2 /steam to enhance floods in horizontal wellbores patent January 1991
Pyrolysis methods with product oil recycling patent January 1991
Preparation of low-viscosity improved stable crude oil transport emulsions patent January 1991
Vacuum method for removing soil contamination utilizing surface electrical heating patent January 1991
Wire and cable patent January 1991
Nuclear magnetism logging tool using high-temperature superconducting squid detectors patent January 1991
Method of producing methanol synthesis gas patent February 1991
Apparatus for thermal treatment of a hydrocarbon stream patent April 1991
In situ soil decontamination method and apparatus patent April 1991
Enhanced oil recovery system with a radiant tube heater patent June 1991
Method for in-situ recovery of energy raw material by the introduction of a water/oxygen slurry patent July 1991
Method and apparatus for producing tar sand deposits containing conductive layers patent August 1991
Method and apparatus for producing hydrocarbon bearing deposits in formations having shale layers patent September 1991
Method and apparatus for containment of hazardous material migration in the earth patent September 1991
In-situ heated annulus refining process patent October 1991
Oil stabilization patent October 1991
Heater utilizing copper-nickel alloy core patent October 1991
Method and apparatus for producing tar sand deposits containing conductive layers having little or no vertical communication patent October 1991
Downhole combination tool patent November 1991
Generating electromagnetic fields in a self regulating temperature heater by positioning of a current return bus patent November 1991
Subterranean heaters patent November 1991
Thermoplastic end seal for electric heating elements patent November 1991
Self-regulating porous heating device patent December 1991
Hydrogen-balanced conversion of diamondoid-containing wash oils to gasoline patent January 1992
In-situ tuned microwave oil extraction process patent January 1992
Gas fired radiant tube heater patent January 1992
Production of oil from low permeability formations by sequential steam fracturing patent February 1992
Membrane process for treating a mixture containing dewaxed oil and dewaxing solvent patent March 1992
Method for recovering intractable petroleum from subterranean formations patent March 1992
Power sources for downhole electrical heating patent March 1992
Membrane process for treating a mixture containing dewaxed oil and dewaxing solvent patent April 1992
Surveying system and method for locating target subterranean bodies patent April 1992
AC power regulator with tap changer patent June 1992
Geopreater heating method and apparatus patent June 1992
Method for in-situ heated annulus refining process patent September 1992
Interchangeable coded key pad assemblies alternately attachable to a user definable keyboard to enable programmable keyboard functions patent September 1992
Method utilizing spot tracer injection and production induced transport for measurement of residual oil saturation patent December 1992
Corrosion and anti-foulant composition and method of use patent December 1992
Self-regulating heater utilizing ferrite-type body patent January 1993
Process of electric pipeline heating utilizing heating elements inserted in pipelines patent January 1993
Current to power crossover heater control patent February 1993
Vacuum method for removing soil contaminants utilizing thermal conduction heating patent March 1993
Method and apparatus for measuring free hydrocarbons and hydrocarbons potential from whole core patent April 1993
Method and apparatus for pumping wells patent May 1993
Wire and cable patent May 1993
Method for enhanced oil recovery through a horizontal production well in a subsurface formation by in-situ combustion patent May 1993
Method and apparatus for improved recovery of oil from porous, subsurface deposits (targevcir oricess) patent June 1993
High temperature wellbore cement slurry patent July 1993
Surface heating blanket for soil remediation patent July 1993
Balanced-line RF electrode system for use in RF ground heating to recover oil from oil shale patent August 1993
Method and apparatus for solution mining patent September 1993
Heat injection process patent October 1993
Method for dumping and disposing of carbon dioxide gas and apparatus therefor patent November 1993
Spiral wound element for separation patent January 1994
Methods for inhibiting polymerization of hydrocarbons utilizing a hydroxyalkylhydroxylamine patent February 1994
Thermal mineral extraction system patent February 1994
Sealed electrical conductor method and arrangement for use with a well bore in hazardous areas patent March 1994
Method for controlling gas migration from a landfill patent March 1994
Oil recovery process patent March 1994
Ultrasonic non-destructive evaluation of thin specimens patent April 1994
Oil production from diatomite formations by fracture steamdrive patent April 1994
Method for determining preselected properties of a crude oil patent April 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
Method of recovery of natural gases from underground coal formations patent July 1994
Recovery and upgrading of hydrocarbon utilizing in situ combustion and horizontal wells patent August 1994
Oil recovery optimization using a well having both horizontal and vertical sections patent August 1994
Process for recovery of hydrocarbons and rejection of sand patent August 1994
Method and apparatus for measuring acoustic wave velocity using impulse response patent September 1994
Vapor-extraction system for removing hydrocarbons from soil patent November 1994
Stationary system for the active and/or passive monitoring of an underground deposit patent November 1994
Method of completing an uncased section of a borehole patent November 1994
Method for producing low permeability reservoirs using a single well patent January 1995
Method for producing methane-containing gaseous mixtures patent February 1995
Method for reducing the inert gas fraction in methane-containing gaseous mixtures obtained from underground formations patent February 1995
Coalbed methane recovery using membrane separation of oxygen from air patent February 1995
Coalbed methane recovery using pressure swing adsorption separation patent February 1995
Method for producing methane-containing gaseous mixtures patent February 1995
Hydrogenation catalyst and process patent February 1995
Oil recovery process patent February 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
Coalbed methane drilling patent May 1995
Method for producing low permeability reservoirs using steam patent May 1995
Method of thermal stimulation for recovery of hydrocarbons patent July 1995
Heat injection process patent July 1995
Methods for isolating a water table and for soil remediation patent July 1995
System for measuring the transfer time of a sound-wave in a gas and thereby calculating the temperature of the gas patent August 1995
Method for treating a mixture of gaseous fluids within a solid carbonaceous subterranean formation patent August 1995
Method for disposing of unwanted gaseous fluid components within a solid carbonaceous subterranean formation patent October 1995
Horizontal well gravity drainage combustion process for oil recovery patent October 1995
Corrugated spiral membrane module patent October 1995
Process of hydrotreating and/or hydrocracking hydrocarbon streams or tail gas treating sulfur-containing gas streams patent November 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
Control system for well stimulation apparatus with response time temperature rise used in determining heater control temperature setpoint patent May 1996
Method for simultaneous recovery of hydrogen from water and from hydrocarbons patent June 1996
Method for drilling a borehole from one cased borehole to another cased borehole patent July 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
Method for recovering methane from a solid carbonaceous subterranean formation patent October 1996
Process for extracting hydrocarbons from diatomite patent November 1996
Method and apparatus for forming an electrical connection patent December 1996
Load voltage based tap changer monitoring system patent April 1997
Electrical heating of mineral well deposits using downhole impedance transformation networks patent April 1997
Apparatus for electrode heating of earth for recovery of subsurface volatiles and semi-volatiles patent April 1997
Acoustic thermometer patent April 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
Method for recovering contaminants from soil utilizing electrical heating patent August 1997
Method of presulfurizing a hydrotreating, hydrocracking or tail gas treating catalyst patent November 1997
Low flux leakage cables and cable terminations for A.C. electrical heating of oil deposits patent February 1998
Process for hydrotreating metal-contaminated hydrocarbonaceous feedstock patent April 1998
Selective excitation of heating electrodes for oil wells patent May 1998
Method and system for reducing NO.sub.x and fuel emissions in a furnace patent June 1998
EMAT probe and technique for weld inspection patent June 1998
In-situ thermal desorption of heavy hydrocarbons in vadose zone patent June 1998
Sensor transport system for combination flash butt welder patent July 1998
Ferrule--type fitting for sealing an electrical conduit in a well head barrier patent October 1998
Method for hydrotreating and upgrading heavy crude oil during production patent October 1998
Method for enhanced recovery of viscous oil deposits patent October 1998
Fiber optic linked flame sensor patent October 1998
Steam reformer with internal hydrogen purification patent January 1999
Flameless combustor patent January 1999
Hydrologic cells for recovery of hydrocarbons or thermal energy from coal, oil-shale, tar-sands and oil-bearing formations patent February 1999
Flameless combustor patent May 1999
Logging while drilling borehole imaging and dipmeter device patent May 1999
Method and apparatus for providing multiple autoregulated temperatures patent June 1999
Method and apparatus for seismic exploration patent July 1999
Continuous in-situ combination process for upgrading heavy oil patent August 1999
Extraction of bitumen from bitumen froth and biotreatment of bitumen froth tailings generated from tar sands patent October 1999
Hydrocarbon recovery systems and methods patent November 1999
Method of extracting a hollow unit laid in the ground patent November 1999
Tar sands extraction process patent November 1999
Remediation method patent December 1999
Insulated and/or concentric coiled tubing patent January 2000
Upgrading and recovery of heavy crude oils and natural bitumens by in situ hydrovisbreaking patent January 2000
Production of synthetic crude oil from heavy hydrocarbons recovered by in situ hydrovisbreaking patent January 2000
Flameless combustor patent February 2000
Electrical heater patent February 2000
Wellbore profiling system patent February 2000
Method and system to locate leaks in subsurface containment structures using tracer gases patent March 2000
Enhanced lift method and apparatus for the production of hydrocarbons patent March 2000
Heater well method and apparatus patent May 2000
Reference signal encoding for seismic while drilling measurement patent June 2000
Heater well method and apparatus patent June 2000
Measurement-while-drilling acoustic system employing multiple, segmented transmitters and receivers patent July 2000
Synthesis gas production system and method patent July 2000
Variable output three-phase transformer patent July 2000
Drilling system with an acoustic measurement-while-driving system for determining parameters of interest and controlling the drilling direction patent July 2000
NMR logging of natural gas reservoirs patent July 2000
Ice composite bodies patent August 2000
Control of heat injection based on temperature and in-situ stress measurement patent August 2000
Apparatus and method for forming ducts and passageways patent August 2000
Remediation method patent August 2000
Process for manufacturing improved process oils using extraction of hydrotreated distillates patent August 2000
Method and apparatus for subterranean thermal conditioning patent September 2000
Hydrogen gas-extraction module and method of fabrication patent November 2000
Edge detection and seam tracking with EMATs patent December 2000
Process for converting gas to liquids patent January 2001
Systems and methods for hydrocarbon recovery patent January 2001
Dynamic orienting reference system for directional drilling patent February 2001
System for generating a seismic signal in a borehole patent February 2001
Apparatus and method for attenuating tube waves in a borehole patent March 2001
Preparation of a hydrotreating catalyst patent April 2001
Steam-assisted gravity drainage heavy oil recovery process patent July 2001
System for eliminating headwaves in a tomographic process patent July 2001
Electrical heater patent August 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
Process for hydrotreatment of a heavy hydrocarbon fraction using permutable reactors and introduction of a middle distillate patent October 2001
Upgrading and recovery of heavy crude oils and natural bitumens by in situ hydrovisbreaking patent December 2001
Optimum oil-well casing heating patent March 2002
Expandable tubing for a well bore hole and method of expanding patent March 2002
Field upgrading of heavy oil and bitumen patent March 2002
Multi-crosswell profile 3D imaging and method patent May 2002
Oilfield in situ hydrocarbon upgrading process patent July 2002
Process for recovering methane and/or sequestering fluids patent July 2002
Horizontal well system patent July 2002
Semblance processing for an acoustic measurement-while-drilling system for imaging of formation boundaries patent July 2002
System and process for secondary hydrocarbon recovery patent October 2002
Low cost, self regulating heater for use in an in situ thermal desorption soil remediation system patent November 2002
Method to increase the oil production from an oil reservoir patent December 2002
Integrated bitumen production and gas conversion patent March 2003
Method and apparatus for heating a wellbore patent April 2003
In Situ thermal processing of a hydrocarbon containing formation to produce sulfur containing formation fluids patent June 2003
Downhole process control method utilizing seismic communication patent June 2003
Live well heater cable patent July 2003
Monitoring of downhole parameters and tools utilizing fiber optics 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 nitrogen and/or sulfur containing formation fluids patent July 2003
In situ thermal processing of a hydrocarbon containing formation with a selected oxygen content patent July 2003
In situ thermal processing of a coal formation with a selected vitrinite reflectance patent July 2003
Supported bimetallic catalyst with a strong interaction between a group VIII metal and tin, and its use in a catalytic reforming process patent August 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
Sodium carbonate and sodium bicarbonate production from nahcolitic oil shale patent August 2003
Petroleum well having downhole sensors, communication and power patent January 2004
Apparatus and method for heating subterranean formations using fuel cells patent February 2004
In situ thermal processing of a hydrocarbon containing formation to produce a hydrocarbon condensate patent February 2004
In situ thermal processing of a coal formation using a relatively slow heating rate patent March 2004
In situ thermal processing of a hydrocarbon containing formation with heat sources located at an edge of a formation layer 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
In situ thermal processing of a hydrocarbon containing formation using a selected production well spacing patent March 2004
In situ thermal processing of a coal formation to pyrolyze a selected percentage of hydrocarbon material patent March 2004
In situ production of synthesis gas from a hydrocarbon containing formation through a heat source wellbore patent April 2004
In situ thermal processing of a hydrocarbon containing formation to form a substantially uniform, high permeability formation patent April 2004
In situ thermal processing of a hydrocarbon containing formation to produce nitrogen containing formation fluids patent April 2004
In situ thermal processing of a hydrocarbon containing formation with a selected atomic oxygen to carbon ratio patent April 2004
Controllable gas-lift well and valve patent April 2004
Methods of generating gas in well fluids patent April 2004
In situ thermal processing of a hydrocarbon containing formation in a hydrogen-rich environment patent April 2004
In situ thermal processing of a hydrocarbon containing formation leaving one or more selected unprocessed areas patent April 2004
In situ thermal processing of a coal formation with a selected oxygen content and/or selected O/C ratio patent April 2004
In situ thermal processing of hydrocarbons within a relatively permeable formation patent April 2004
In situ thermal processing of a hydrocarbon containing formation to convert a selected amount of total organic carbon into hydrocarbon products 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 hydrocarbon containing formation with a selected ratio of heat sources to production wells patent May 2004
In situ thermal processing of a coal formation to produce hydrocarbons having a selected carbon number range patent May 2004
In situ thermal processing of a hydrocarbon containing formation with a selected vitrinite reflectance patent May 2004
In situ thermal processing of a hydrocarbon containing formation and ammonia production patent May 2004
In situ thermal processing of a hydrocarbon containing formation to produce a mixture with a selected hydrogen content patent May 2004
In situ thermal processing of a hydrocarbon containing formation to pyrolyze a selected percentage of hydrocarbon material patent May 2004
In situ production of synthesis gas from a hydrocarbon containing formation, the synthesis gas having a selected H2 to CO ratio patent May 2004
In situ thermal processing of a hydrocarbon containing formation, in situ production of synthesis gas, and carbon dioxide sequestration patent May 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
In situ thermal processing of a coal formation to form a substantially uniform, relatively high permeable formation patent June 2004
In situ thermal processing of a hydrocarbon containing formation to produce formation fluids having a relatively low olefin content patent June 2004
In situ thermal processing of a coal formation using repeating triangular patterns of heat sources patent June 2004
In situ thermal processing of a hydrocarbon containing formation using heat transfer from a heat transfer fluid to heat the formation patent June 2004
In situ thermal processing of a hydrocarbon containing formation by controlling a pressure of the formation patent June 2004
Situ thermal processing of a hydrocarbon containing formation to control product composition patent June 2004
In situ thermal processing of a hydrocarbon containing formation using a controlled heating rate patent June 2004
In situ thermal processing of a coal formation using a controlled heating rate patent June 2004
In situ thermal processing of a coal formation using heat sources positioned within open wellbores patent June 2004
In situ thermal processing of a hydrocarbon containing formation using a relatively slow heating rate patent July 2004
Arsenic removal catalyst and method for making same patent July 2004
In situ thermal processing of a coal formation to produce hydrocarbon fluids and synthesis gas patent July 2004
In situ thermal processing of a coal formation with carbon dioxide sequestration patent July 2004
In situ thermal processing of a hydrocarbon containing formation using conductor in conduit heat sources patent August 2004
In situ production of synthesis gas from a coal formation through a heat source wellbore patent August 2004
In situ thermal processing of a relatively impermeable formation to increase permeability of the formation 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 a hydrocarbon containing formation to produce hydrocarbon fluids and synthesis gas patent October 2004
In situ thermal processing of coal formation with a selected hydrogen content and/or selected H/C ratio patent November 2004
Integrated flameless distributed combustion/steam reforming membrane reactor for hydrogen production and use thereof in zero emissions hybrid power system patent November 2004
Preparation of components for refinery blending of transportation fuels patent December 2004
Two string drilling system using coil tubing patent February 2005
Isolation of soil with a low temperature barrier prior to conductive thermal treatment of the soil patent February 2005
In situ thermal processing of a coal formation to increase a permeability/porosity of the formation patent March 2005
In situ thermal processing of a hydrocarbon containing formation with carbon dioxide sequestration patent March 2005
In situ thermal processing of a hydrocarbon containing formation using pressure and/or temperature control patent April 2005
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
In situ production of synthesis gas from a coal formation, the synthesis gas having a selected H2 to CO ratio patent April 2005
In situ thermal processing of a hydrocarbon containing formation with a selected moisture content patent May 2005
In situ thermal processing of a hydrocarbon containing formation using repeating triangular patterns of heat sources patent May 2005
In situ thermal processing of a hydrocarbon containing formation having a selected total organic carbon content patent June 2005
In situ thermal processing of a hydrocarbon containing formation using a movable heating element patent June 2005
In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor patent June 2005
In Situ thermal processing of hydrocarbons within a relatively impermeable formation patent July 2005
Method and system for monitoring smart structures utilizing distributed optical sensors patent July 2005
In situ thermal processing of an oil shale formation having permeable and impermeable sections patent July 2005
In situ thermal processing of an oil shale formation in a reducing environment patent July 2005
In situ thermal processing of an oil shale formation to produce hydrocarbons having a selected carbon number range patent July 2005
In situ thermal processing of an oil shale formation to produce a condensate patent August 2005
In situ thermal processsing of a hydrocarbon containing formation to produce a mixture with a selected hydrogen content patent August 2005
Heat sources with conductive material for in situ thermal processing of an oil shale formation 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
Thermal processing of a hydrocarbon containing formation to increase a permeability of the formation patent October 2005
Permanent downhole, wireless, two-way telemetry backbone using redundant repeaters patent October 2005
In situ thermal processing of a coal formation with a selected ratio of heat sources to production wells patent November 2005
In situ thermal recovery from a relatively permeable formation with backproduction through a heater wellbore patent November 2005
In situ thermal processing of a hydrocarbon containing formation to produce oxygen containing formation fluids patent November 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 a hydrocarbon containing formation to produce hydrocarbons having a selected carbon number range patent February 2006
In situ thermal processing of a coal formation with a selected moisture content patent February 2006
In situ thermal processing of a hydrocarbon containing formation with a selected hydrogen to carbon ratio patent February 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
In situ thermal processing and inhibiting migration of fluids into or out of an in situ oil shale formation patent April 2006
In situ thermal processing of a hydrocarbon containing formation to increase a porosity of the formation patent May 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
Methods and systems for heating a hydrocarbon containing formation in situ with an opening contacting the earth's surface at two locations 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
Staged and/or patterned heating during in situ thermal processing of a hydrocarbon containing formation patent July 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 hydrocarbon containing formation using heat sources positioned within open wellbores patent August 2006
In situ thermal processing of a hydrocarbon containing formation to produce heated fluids 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
Producing hydrocarbons and non-hydrocarbon containing materials when treating a hydrocarbon containing formation patent September 2006
In situ thermal processing of a heavy oil diatomite formation patent September 2006
In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor patent October 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
Treatment of a hydrocarbon containing formation after heating patent October 2006
Loop systems and methods of using the same for conveying and distributing thermal energy into a wellbore patent December 2006
Use of downhole high pressure gas in a gas-lift well and associated methods patent December 2006
Heat and corrosion resistant cast CF8C stainless steel with improved high temperature strength and ductility patent December 2006
Installation and use of removable heaters in a hydrocarbon containing formation patent January 2007
In situ recovery from a hydrocarbon containing formation using conductor-in-conduit heat sources with an electrically conductive material in the overburden patent January 2007
Oil well casting electrical power pick-off points patent January 2007
Reverse circulation directional and horizontal drilling using concentric drill string patent April 2007
Inhibiting wellbore deformation during in situ thermal processing of a hydrocarbon containing formation patent May 2007
In situ thermal processing of an oil shale formation using a pattern of heat sources patent June 2007
Inhibiting reflux in a heated well of an in situ conversion system patent January 2008
Inhibiting effects of sloughing in wellbores patent April 2008
Thermal processes for subsurface formations patent April 2008
Triaxial temperature limited heater patent May 2008
Temperature limited heaters with thermally conductive fluid used to heat subsurface formations patent June 2008
Temperature limited heaters using modulated DC power patent October 2008
Low temperature barriers with heat interceptor wells for in situ processes patent October 2008
Method and apparatus for in-situ radiofrequency assisted gravity drainage of oil (RAGD) patent October 2008
In situ recovery from a hydrocarbon containing formation patent December 2008
Variable frequency temperature limited heaters patent February 2009
Solution mining and heating by oxidation for treating hydrocarbon containing formations patent June 2009
Solution mining dawsonite from hydrocarbon containing formations with a chelating agent patent July 2009
Varying heating in dawsonite zones in hydrocarbon containing formations patent July 2009
Temperature limited heater with a conduit substantially electrically isolated from the formation patent July 2009
Solution mining systems and methods for treating hydrocarbon containing formations patent July 2009
Systems and methods for producing hydrocarbons from tar sands formations patent July 2009
Heating hydrocarbon containing formations in a line drive staged process 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
Temperature limited heaters using phase transformation of ferromagnetic material patent October 2009
Compositions produced using an in situ heat treatment process patent October 2009
Sour gas injection for use with in situ heat treatment patent November 2009
Sulfur barrier for use with in situ processes for treating formations patent December 2009
Heating hydrocarbon containing formations in a spiral startup staged sequence patent December 2009
Time sequenced heating of multiple layers in a hydrocarbon containing formation patent December 2009
Heating tar sands formations to visbreaking temperatures patent December 2009
Cogeneration systems and processes for treating hydrocarbon containing formations patent December 2009
Power control system 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 condensing vaporized water in situ to treat 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
Using geothermal energy to heat a portion of a formation for an in situ heat treatment process 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
High strength alloys patent August 2010
Non-ferromagnetic overburden casing patent September 2010
In situ heat treatment of a tar sands formation after drive process treatment patent September 2010
In situ recovery from a hydrocarbon containing formation patent September 2010
Insulated conductor temperature limited heater for subsurface heating coupled in a three-phase WYE configuration patent November 2010
Grouped exposed metal heaters patent November 2010
Molten salt as a heat transfer fluid for heating a subsurface formation patent November 2010
Gas injection to inhibit migration during an in situ heat treatment process patent November 2010
In situ heat treatment from multiple layers of a tar sands formation patent November 2010
Drilling subsurface wellbores with cutting structures patent November 2010
In situ heat treatment process utilizing a closed loop heating system patent December 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
Power systems utilizing the heat of produced formation fluid patent January 2011
In situ oxidation of subsurface formations patent January 2011
High temperature methods for forming oxidizer fuel patent January 2011
Alternate energy source usage for in situ heat treatment processes patent March 2011
Heating systems for heating subsurface formations patent April 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
In situ conversion process systems utilizing wellbores in at least two regions of a formation patent September 2011
Parallel heater system for subsurface formations patent October 2011
Treatment of gas from an in situ conversion process patent December 2011
Methods of producing transportation fuel patent December 2011
Three-phase heaters with common overburden sections for heating subsurface formations patent February 2012
Cryogenic treatment of gas patent April 2012
Multi-step heater deployment in a subsurface formation patent April 2012
Methods of making transportation fuel patent April 2012
Creating fluid injectivity in tar sands formations patent June 2012
High strength alloys patent June 2012
Irregular spacing of heat sources for treating hydrocarbon containing formations patent June 2012
Temperature limited heaters for heating subsurface formations or wellbores patent June 2012
Insulated conductor temperature limited heaters patent July 2012
Temperature limited heater utilizing non-ferromagnetic conductor 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
Solution mining and in situ treatment of nahcolite beds patent August 2012
Movable heaters for treating subsurface hydrocarbon containing formations patent September 2012
Press-fit coupling joint for joining insulated conductors patent September 2012
Heating subsurface formations with fluids patent September 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
Heating subsurface formations by oxidizing fuel on a fuel carrier patent October 2012
Circulated heated transfer fluid heating of subsurface hydrocarbon formations patent October 2012
Wellbore manufacturing processes for in situ heat treatment processes patent December 2012
Recovering energy from a subsurface formation patent December 2012
Deployment of insulated conductors for treating subsurface formations patent January 2013
Temperature limited heaters with high power factors patent January 2013
Joint used for coupling long heaters patent February 2013
Production from multiple zones of a tar sands formation patent February 2013
Irregular pattern treatment of a subsurface formation patent May 2013
Treating nahcolite containing formations and saline zones patent June 2013
In situ recovery from a hydrocarbon containing formation patent July 2013
Press-fit coupling joint for joining insulated conductors patent July 2013
Insulating blocks and methods for installation in insulated conductor heaters patent August 2013
Treating tar sands formations with dolomite patent October 2013
In situ recovery from a hydrocarbon containing formation patent January 2014
Leak detection in circulated fluid systems for heating subsurface formations patent January 2014
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
Heating System for Crude Oil Transporting Metallic Tubes patent-application March 2002
In situ thermal processing of a hydrocarbon containing formation using insulated conductor heat sources patent-application March 2002
In situ thermal processing of a coal formation, in situ production of synthesis gas, and carbon dioxide sequestration 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 mixture containing olefins, oxygenated hydrocarbons, and/or aromatic hydrocarbons patent-application April 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 using substantially parallel wellbores patent-application April 2002
In situ thermal processing of a hydrocarbon containing formation to produce a mixture including ammonia patent-application April 2002
In situ thermal processing of a hydrocarbon containing formation to produce a selected ratio of components in a gas patent-application May 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 transporting Fischer-Tropsch products patent-application September 2002
Method for pumping fluids patent-application October 2002
Apparatus, method and system for single well solution-mining patent-application February 2003
Wireless reservoir production control 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
Thermally stable jet prepared from highly paraffinic distillate fuel component and conventional distillate fuel component patent-application June 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
Process for the Recovery of Hydrocarbon Fractions from Hydrocarbonaceous Solids patent-application January 2004
System and method for subterranean access patent-application February 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
Diesel fuel compositions patent-application October 2004
Variable frequency temperature limited heaters 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
Hydroprocessing methods and apparatus for use in the preparation of liquid hydrocarbons patent-application September 2005
Start-up of temperature limited heaters using direct current (DC) patent-application December 2005
Inhibiting effects of sloughing in wellbores 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
Selective electromagnetic production tool patent-application July 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
Method for production and upgrading of oil patent-application October 2006
Subsurface electrical heaters using nitride insulation patent-application December 2006
Low temperature barriers with heat interceptor wells for in situ processes 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
Solution mining dawsonite from hydrocarbon containing formations with a chelating agent patent-application May 2007
Low temperature barrier wellbores formed using water flushing patent-application May 2007
Insulated conductor temperature limited heater for subsurface heating coupled in a three-phase wye configuration 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 cracking a crude product to produce additional crude products patent-application June 2007
Systems and methods for producing hydrocarbons from tar sands formations patent-application June 2007
Methods of filtering a liquid stream produced from an in situ heat treatment process patent-application June 2007
In situ co-development of oil shale with mineral recovery patent-application October 2007
Kerogen Extraction From Subterranean Oil Shale Resources patent-application January 2008
Methods of producing transportation fuel patent-application February 2008
Producing drive fluid in situ in tar sands formations patent-application June 2008
Heating hydrocarbon containing formations in a line drive staged process 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
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
Condensing vaporized water in situ to treat tar sands formations patent-application October 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
Electrically Isolating Insulated Conductor Heater patent-application May 2009
Treating Nahcolite Containing Formations and Saline Zones patent-application May 2009
Continuous Subsurface Heater Temperature Measurement patent-application July 2009
Three-Phase Heaters with Common Overburden Sections for Heating Subsurface Formations patent-application August 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
Ranging Methods for Developing Wellbores in Subsurface 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
Mines and Tunnels for use in Treating Subsurface Hydrocarbon Containing Formations patent-application October 2009
Hydrocarbon Production from Mines and Tunnels Used in Treating Subsurface Hydrocarbon Containing Formations patent-application October 2009
Electrical Current Flow Between Tunnels for Use in Heating Subsurface Hydrocarbon Containing Formations patent-application November 2009
Heated Fluid Flow in Mines and Tunnels Used in Heating Subsurface Hydrocarbon Containing Formations patent-application November 2009
Using Tunnels for Treating Subsurface Hydrocarbon Containing Formations patent-application November 2009
Heater Connections in Mines and Tunnels for Use in Treating Subsurface Hydrocarbon Containing Formations patent-application November 2009
Dual Motor Systems and Non-Rotating Sensors for Use in Developing Wellbores in Subsurface Formations patent-application November 2009
Methods of Producing Alkylated Hydrocarbons from an In Situ Heat Treatment Process Liquid patent-application December 2009
Organonitrogen Compounds Used in Treating Hydrocarbon Containing Formations patent-application June 2010
Recovering Energy from a Subsurface Formation patent-application October 2010
Heater Assisted Fluid Treatment of a Subsurface Formation patent-application October 2010
In Situ Method and System for Extraction of Oil from Shale patent-application November 2010
Thermal Processes for Subsurface Formations patent-application October 2011

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