US Patent No: 7,490,665

Number of patents in Portfolio can not be more than 2000

Variable frequency temperature limited heaters

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ALSO PUBLISHED AS: 20050269093
ATTORNEY / AGENT: (SPONSORED)
 

Importance

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Abstract

Certain embodiments provide a heating system configured to heat at least a part of a subsurface formation. The system includes an electrical power supply. A heater section includes one or more electrical conductors electrically coupled to the electrical power supply. The heater section is configured to be placed in an opening in the formation. At least one of the electrical conductors includes ferromagnetic material. The heater section provides a first heat output when time-varying electrical current is applied to the heater section below a selected temperature, and provides a second heat output approximately at and above the selected temperature during use. The second heat output is reduced compared to the first heat output. The system is configured to allow heat to transfer from the heater section to a part of the formation. The system is configured to allow a frequency of the applied time-varying electrical current to be varied.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SHELL OIL COMPANYHOUSTON, TX4873

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Harris, Christopher Kelvin Houston, TX 37 2085
Sandberg, Chester Ledlie Palo Alto, CA 29 1996
Vinegar, Harold J Bellaire, TX 379 45908

Cited Art

Patent Info (Count) # Cites Year
 
SHELL OIL COMPANY (229)
4,359,687 Method and apparatus for determining shaliness and oil saturations in earth formations using induced polarization in the frequency domain 256 1980
4,398,151 Method for correcting an electrical log for the presence of shale in a formation 244 1982
4,583,046 Apparatus for focused electrode induced polarization logging 247 1983
4,499,209 Process for the preparation of a Fischer-Tropsch catalyst and preparation of hydrocarbons from syngas 189 1983
4,540,882 Method of determining drilling fluid invasion 253 1983
4,542,648 Method of correlating a core sample with its original position in a borehole 254 1983
4,571,491 Method of imaging the atomic number of a sample 263 1983
4,583,242 Apparatus for positioning a sample in a computerized axial tomographic scanner 250 1983
4,613,754 Tomographic calibration apparatus 259 1983
4,635,197 High resolution tomographic imaging method 244 1983
4,644,283 In-situ method for determining pore size distribution, capillary pressure and permeability 256 1984
4,570,715 Formation-tailored method and apparatus for uniformly heating long subterranean intervals at high temperature 275 1984
4,663,711 Method of analyzing fluid saturation using computerized axial tomography 245 1984
4,572,299 Heater cable installation 266 1984
4,585,066 Well treating process for installing a cable bundle containing strands of changing diameter 239 1984
4,704,514 Heating rate variant elongated electrical resistance heater 279 1985
4,671,102 Method and apparatus for determining distribution of fluids 264 1985
4,626,665 Metal oversheathed electrical resistance heater 263 1985
4,719,423 NMR imaging of materials for transport properties 271 1985
4,728,892 NMR imaging of materials 295 1985
4,640,352 In-situ steam drive oil recovery process 277 1985
4,730,162 Time-domain induced polarization logging method and apparatus with gated amplification level 242 1985
4,658,215 Method for induced polarization logging 248 1986
4,616,705 Mini-well temperature profiling process 262 1986
4,769,602 Determining multiphase saturations by NMR imaging of multiple nuclides 266 1986
4,769,606 Induced polarization method and apparatus for distinguishing dispersed and laminated clay in earth formations 249 1986
4,743,854 In-situ induced polarization method for determining formation permeability 244 1986
4,827,761 Sample holder 257 1987
4,856,341 Apparatus for analysis of failure of material 251 1987
5,306,640 Method for determining preselected properties of a crude oil 249 1987
4,886,118 Conductively heating a subterranean oil shale to create permeability and subsequently produce oil 296 1988
4,866,983 Analytical methods and apparatus for measuring the oil content of sponge core 247 1988
4,893,504 Method for determining capillary pressure and relative permeability by imaging 173 1988
4,884,455 Method for analysis of failure of material employing imaging 248 1989
4,987,368 Nuclear magnetism logging tool using high-temperature superconducting squid detectors 269 1989
5,046,559 Method and apparatus for producing hydrocarbon bearing deposits in formations having shale layers 269 1990
5,060,726 Method and apparatus for producing tar sand deposits containing conductive layers having little or no vertical communication 259 1990
5,060,287 Heater utilizing copper-nickel alloy core 281 1990
5,065,818 Subterranean heaters 273 1991
5,189,283 Current to power crossover heater control 248 1991
5,168,927 Method utilizing spot tracer injection and production induced transport for measurement of residual oil saturation 247 1991
5,226,961 High temperature wellbore cement slurry 257 1992
5,255,742 Heat injection process 298 1992
5,297,626 Oil recovery process 278 1992
5,236,039 Balanced-line RF electrode system for use in RF ground heating to recover oil from oil shale 284 1992
5,366,012 Method of completing an uncased section of a borehole 514 1993
5,391,291 Hydrogenation catalyst and process 251 1993
5,392,854 Oil recovery process 282 1993
5,404,952 Heat injection process and apparatus 269 1993
5,411,089 Heat injection process 254 1993
5,433,271 Heat injection process 259 1993
5,409,071 Method to cement a wellbore 254 1994
5,497,087 NMR logging of natural gas reservoirs 284 1994
5,498,960 NMR logging of natural gas in reservoirs 298 1994
5,541,517 Method for drilling a borehole from one cased borehole to another cased borehole 252 1995
5,862,858 Flameless combustor 264 1996
5,899,269 Flameless combustor 279 1996
6,056,057 Heater well method and apparatus 274 1997
6,079,499 Heater well method and apparatus 269 1997
6,094,048 NMR logging of natural gas reservoirs 249 1997
6,023,554 Electrical heater 275 1998
6,102,122 Control of heat injection based on temperature and in-situ stress measurement 249 1998
6,019,172 Flameless combustor 253 1999
6,540,018 Method and apparatus for heating a wellbore 124 1999
6,679,332 Petroleum well having downhole sensors, communication and power 160 2001
6,715,550 Controllable gas-lift well and valve 123 2001
2002/0036,085 Toroidal choke inductor for wireless communication and control 60 2001
6,981,553 Controlled downhole chemical injection 119 2001
7,147,059 Use of downhole high pressure gas in a gas-lift well and associated methods 120 2001
7,170,424 Oil well casting electrical power pick-off points 117 2001
6,581,684 In Situ thermal processing of a hydrocarbon containing formation to produce sulfur containing formation fluids 212 2001
6,588,503 In Situ thermal processing of a coal formation to control product composition 184 2001
6,588,504 In situ thermal processing of a coal formation to produce nitrogen and/or sulfur containing formation fluids 192 2001
6,591,906 In situ thermal processing of a hydrocarbon containing formation with a selected oxygen content 201 2001
6,591,907 In situ thermal processing of a coal formation with a selected vitrinite reflectance 184 2001
6,607,033 In Situ thermal processing of a coal formation to produce a condensate 180 2001
6,609,570 In situ thermal processing of a coal formation and ammonia production 180 2001
6,688,387 In situ thermal processing of a hydrocarbon containing formation to produce a hydrocarbon condensate 177 2001
6,698,515 In situ thermal processing of a coal formation using a relatively slow heating rate 180 2001
6,702,016 In situ thermal processing of a hydrocarbon containing formation with heat sources located at an edge of a formation layer 187 2001
6,708,758 In situ thermal processing of a coal formation leaving one or more selected unprocessed areas 187 2001
6,712,135 In situ thermal processing of a coal formation in reducing environment 179 2001
6,712,136 In situ thermal processing of a hydrocarbon containing formation using a selected production well spacing 201 2001
6,712,137 In situ thermal processing of a coal formation to pyrolyze a selected percentage of hydrocarbon material 178 2001
6,715,546 In situ production of synthesis gas from a hydrocarbon containing formation through a heat source wellbore 194 2001
6,715,547 In situ thermal processing of a hydrocarbon containing formation to form a substantially uniform, high permeability formation 183 2001
6,715,548 In situ thermal processing of a hydrocarbon containing formation to produce nitrogen containing formation fluids 183 2001
6,715,549 In situ thermal processing of a hydrocarbon containing formation with a selected atomic oxygen to carbon ratio 156 2001
6,719,047 In situ thermal processing of a hydrocarbon containing formation in a hydrogen-rich environment 182 2001
6,722,429 In situ thermal processing of a hydrocarbon containing formation leaving one or more selected unprocessed areas 192 2001
6,722,430 In situ thermal processing of a coal formation with a selected oxygen content and/or selected O/C ratio 179 2001
6,722,431 In situ thermal processing of hydrocarbons within a relatively permeable formation 196 2001
6,725,920 In situ thermal processing of a hydrocarbon containing formation to convert a selected amount of total organic carbon into hydrocarbon products 183 2001
6,725,921 In situ thermal processing of a coal formation by controlling a pressure of the formation 150 2001
6,725,928 In situ thermal processing of a coal formation using a distributed combustor 179 2001
6,729,395 In situ thermal processing of a hydrocarbon containing formation with a selected ratio of heat sources to production wells 183 2001
6,729,396 In situ thermal processing of a coal formation to produce hydrocarbons having a selected carbon number range 177 2001
6,729,397 In situ thermal processing of a hydrocarbon containing formation with a selected vitrinite reflectance 183 2001
6,729,401 In situ thermal processing of a hydrocarbon containing formation and ammonia production 183 2001
6,732,794 In situ thermal processing of a hydrocarbon containing formation to produce a mixture with a selected hydrogen content 183 2001
6,732,795 In situ thermal processing of a hydrocarbon containing formation to pyrolyze a selected percentage of hydrocarbon material 143 2001
6,732,796 In situ production of synthesis gas from a hydrocarbon containing formation, the synthesis gas having a selected H2 to CO ratio 202 2001
6,736,215 In situ thermal processing of a hydrocarbon containing formation, in situ production of synthesis gas, and carbon dioxide sequestration 188 2001
6,739,393 In situ thermal processing of a coal formation and tuning production 178 2001
6,739,394 Production of synthesis gas from a hydrocarbon containing formation 185 2001
6,742,587 In situ thermal processing of a coal formation to form a substantially uniform, relatively high permeable formation 178 2001
6,742,588 In situ thermal processing of a hydrocarbon containing formation to produce formation fluids having a relatively low olefin content 201 2001
6,742,589 In situ thermal processing of a coal formation using repeating triangular patterns of heat sources 177 2001
6,742,593 In situ thermal processing of a hydrocarbon containing formation using heat transfer from a heat transfer fluid to heat the formation 184 2001
6,745,831 In situ thermal processing of a hydrocarbon containing formation by controlling a pressure of the formation 194 2001
6,745,832 Situ thermal processing of a hydrocarbon containing formation to control product composition 155 2001
6,745,837 In situ thermal processing of a hydrocarbon containing formation using a controlled heating rate 183 2001
6,749,021 In situ thermal processing of a coal formation using a controlled heating rate 181 2001
6,752,210 In situ thermal processing of a coal formation using heat sources positioned within open wellbores 187 2001
6,758,268 In situ thermal processing of a hydrocarbon containing formation using a relatively slow heating rate 183 2001
6,761,216 In situ thermal processing of a coal formation to produce hydrocarbon fluids and synthesis gas 179 2001
6,763,886 In situ thermal processing of a coal formation with carbon dioxide sequestration 179 2001
6,769,483 In situ thermal processing of a hydrocarbon containing formation using conductor in conduit heat sources 182 2001
6,769,485 In situ production of synthesis gas from a coal formation through a heat source wellbore 180 2001
6,789,625 In situ thermal processing of a hydrocarbon containing formation using exposed metal heat sources 183 2001
6,805,195 In situ thermal processing of a hydrocarbon containing formation to produce hydrocarbon fluids and synthesis gas 171 2001
6,820,688 In situ thermal processing of coal formation with a selected hydrogen content and/or selected H/C ratio 160 2001
6,866,097 In situ thermal processing of a coal formation to increase a permeability/porosity of the formation 144 2001
6,871,707 In situ thermal processing of a hydrocarbon containing formation with carbon dioxide sequestration 138 2001
6,877,554 In situ thermal processing of a hydrocarbon containing formation using pressure and/or temperature control 136 2001
6,880,635 In situ production of synthesis gas from a coal formation, the synthesis gas having a selected H2 to CO ratio 138 2001
6,889,769 In situ thermal processing of a hydrocarbon containing formation with a selected moisture content 124 2001
6,896,053 In situ thermal processing of a hydrocarbon containing formation using repeating triangular patterns of heat sources 137 2001
6,902,003 In situ thermal processing of a hydrocarbon containing formation having a selected total organic carbon content 124 2001
6,902,004 In situ thermal processing of a hydrocarbon containing formation using a movable heating element 128 2001
6,910,536 In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor 126 2001
6,913,078 In Situ thermal processing of hydrocarbons within a relatively impermeable formation 133 2001
6,948,563 In situ thermal processing of a hydrocarbon containing formation with a selected hydrogen content 125 2001
6,953,087 Thermal processing of a hydrocarbon containing formation to increase a permeability of the formation 133 2001
6,959,761 In situ thermal processing of a coal formation with a selected ratio of heat sources to production wells 122 2001
6,966,372 In situ thermal processing of a hydrocarbon containing formation to produce oxygen containing formation fluids 127 2001
6,973,967 Situ thermal processing of a coal formation using pressure and/or temperature control 121 2001
6,994,160 In situ thermal processing of a hydrocarbon containing formation to produce hydrocarbons having a selected carbon number range 129 2001
6,994,168 In situ thermal processing of a hydrocarbon containing formation with a selected hydrogen to carbon ratio 119 2001
6,997,255 In situ thermal processing of a hydrocarbon containing formation in a reducing environment 120 2001
7,036,583 In situ thermal processing of a hydrocarbon containing formation to increase a porosity of the formation 130 2001
7,086,468 In situ thermal processing of a hydrocarbon containing formation using heat sources positioned within open wellbores 117 2001
7,096,941 In situ thermal processing of a coal formation with heat sources located at an edge of a coal layer 114 2001
7,096,953 In situ thermal processing of a coal formation using a movable heating element 128 2001
2002/0027,001 In situ thermal processing of a coal formation to produce a selected gas mixture 168 2001
2002/0033,253 In situ thermal processing of a hydrocarbon containing formation using insulated conductor heat sources 171 2001
2002/0035,307 In situ thermal processing of a coal formation, in situ production of synthesis gas, and carbon dioxide sequestration 96 2001
2002/0036,089 In situ thermal processing of a hydrocarbon containing formation using distributed combustor heat sources 166 2001
2002/0038,069 In situ thermal processing of a coal formation to produce a mixture of olefins, oxygenated hydrocarbons, and aromatic hydrocarbons 166 2001
2002/0040,779 In situ thermal processing of a hydrocarbon containing formation to produce a mixture containing olefins, oxygenated hydrocarbons, and/or aromatic hydrocarbons 172 2001
2002/0040,780 In situ thermal processing of a hydrocarbon containing formation to produce a selected mixture 168 2001
2002/0040,781 In situ thermal processing of a hydrocarbon containing formation using substantially parallel wellbores 97 2001
2002/0049,360 In situ thermal processing of a hydrocarbon containing formation to produce a mixture including ammonia 105 2001
2002/0053,431 In situ thermal processing of a hydrocarbon containing formation to produce a selected ratio of components in a gas 168 2001
2002/0076,212 In situ thermal processing of a hydrocarbon containing formation producing a mixture with oxygenated hydrocarbons 169 2001
2003/0066,642 In situ thermal processing of a coal formation producing a mixture with oxygenated hydrocarbons 115 2001
2003/0075,318 In situ thermal processing of a coal formation using substantially parallel formed wellbores 86 2001
2003/0085,034 In situ thermal processing of a coal formation to produce pyrolsis products 167 2001
6,782,947 In situ thermal processing of a relatively impermeable formation to increase permeability of the formation 215 2002
6,877,555 In situ thermal processing of an oil shale formation while inhibiting coking 149 2002
6,880,633 In situ thermal processing of an oil shale formation to produce a desired product 164 2002
6,915,850 In situ thermal processing of an oil shale formation having permeable and impermeable sections 128 2002
6,918,442 In situ thermal processing of an oil shale formation in a reducing environment 126 2002
6,918,443 In situ thermal processing of an oil shale formation to produce hydrocarbons having a selected carbon number range 140 2002
6,923,257 In situ thermal processing of an oil shale formation to produce a condensate 142 2002
6,929,067 Heat sources with conductive material for in situ thermal processing of an oil shale formation 137 2002
6,948,562 Production of a blending agent using an in situ thermal process in a relatively permeable formation 150 2002
6,951,247 In situ thermal processing of an oil shale formation using horizontal heat sources 152 2002
6,964,300 In situ thermal recovery from a relatively permeable formation with backproduction through a heater wellbore 147 2002
6,966,374 In situ thermal recovery from a relatively permeable formation using gas to increase mobility 131 2002
6,981,548 In situ thermal recovery from a relatively permeable formation 128 2002
6,991,032 In situ thermal processing of an oil shale formation using a pattern of heat sources 134 2002
6,994,169 In situ thermal processing of an oil shale formation with a selected property 126 2002
6,997,518 In situ thermal processing and solution mining of an oil shale formation 137 2002
7,004,247 Conductor-in-conduit heat sources for in situ thermal processing of an oil shale formation 151 2002
7,004,251 In situ thermal processing and remediation of an oil shale formation 147 2002
7,032,660 In situ thermal processing and inhibiting migration of fluids into or out of an in situ oil shale formation 149 2002
7,040,397 Thermal processing of an oil shale formation to increase permeability of the formation 136 2002
7,040,398 In situ thermal processing of a relatively permeable formation in a reducing environment 123 2002
7,040,399 In situ thermal processing of an oil shale formation using a controlled heating rate 136 2002
7,040,400 In situ thermal processing of a relatively impermeable formation using an open wellbore 144 2002
7,055,600 In situ thermal recovery from a relatively permeable formation with controlled production rate 135 2002
7,096,942 In situ thermal processing of a relatively permeable formation while controlling pressure 139 2002
2003/0079,877 In situ thermal processing of a relatively impermeable formation in a reducing environment 181 2002
2003/0146,002 Removable heat sources for in situ thermal processing of an oil shale formation 178 2002
6,932,155 In situ thermal processing of a hydrocarbon containing formation via backproducing through a heater well 138 2002
6,969,123 Upgrading and mining of coal 153 2002
7,011,154 In situ recovery from a kerogen and liquid hydrocarbon containing formation 148 2002
7,063,145 Methods and systems for heating a hydrocarbon containing formation in situ with an opening contacting the earth's surface at two locations 142 2002
7,066,254 In situ thermal processing of a tar sands formation 173 2002
7,066,257 In situ recovery from lean and rich zones in a hydrocarbon containing formation 128 2002
7,077,198 In situ recovery from a hydrocarbon containing formation using barriers 158 2002
7,077,199 In situ thermal processing of an oil reservoir formation 146 2002
7,086,465 In situ production of a blending agent from a hydrocarbon containing formation 126 2002
7,090,013 In situ thermal processing of a hydrocarbon containing formation to produce heated fluids 145 2002
7,100,994 Producing hydrocarbons and non-hydrocarbon containing materials when treating a hydrocarbon containing formation 136 2002
7,104,319 In situ thermal processing of a heavy oil diatomite formation 141 2002
7,114,566 In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor 151 2002
7,128,153 Treatment of a hydrocarbon containing formation after heating 133 2002
7,156,176 Installation and use of removable heaters in a hydrocarbon containing formation 129 2002
7,165,615 In situ recovery from a hydrocarbon containing formation using conductor-in-conduit heat sources with an electrically conductive material in the overburden 141 2002
2003/0196,789 In situ thermal processing of a hydrocarbon containing formation and upgrading of produced fluids prior to further treatment 186 2002
2003/0201,098 In situ recovery from a hydrocarbon containing formation using one or more simulations 186 2002
6,923,258 In situ thermal processsing of a hydrocarbon containing formation to produce a mixture with a selected hydrogen content 133 2003
6,958,704 Permanent downhole, wireless, two-way telemetry backbone using redundant repeaters 124 2003
7,073,578 Staged and/or patterned heating during in situ thermal processing of a hydrocarbon containing formation 155 2003
7,121,341 Conductor-in-conduit temperature limited heaters 125 2003
7,219,734 Inhibiting wellbore deformation during in situ thermal processing of a hydrocarbon containing formation 133 2003
2004/0140,096 Insulated conductor temperature limited heaters 140 2003
2004/0144,540 High voltage temperature limited heaters 136 2003
2004/0144,541 Forming wellbores using acoustic methods 108 2003
2004/0146,288 Temperature limited heaters for heating subsurface formations or wellbores 143 2003
2005/0006,097 Variable frequency temperature limited heaters 140 2003
7,121,342 Thermal processes for subsurface formations 171 2004
2005/0269,313 Temperature limited heaters with high power factors 117 2005
2006/0005,968 Temperature limited heaters with relatively constant current 90 2005
2006/0289,536 Subsurface electrical heaters using nitride insulation 116 2005
7,225,866 In situ thermal processing of an oil shale formation using a pattern of heat sources 132 2006
2007/0045,266 In situ conversion process utilizing a closed loop heating system 121 2006
2007/0045,267 Subsurface connection methods for subsurface heaters 130 2006
2007/0045,268 Varying properties along lengths of temperature limited heaters 123 2006
2007/0108,200 Low temperature barrier wellbores formed using water flushing 109 2006
2007/0108,201 Insulated conductor temperature limited heater for subsurface heating coupled in a three-phase wye configuration 117 2006
2007/0119,098 Treatment of gas from an in situ conversion process 112 2006
2007/0133,959 Grouped exposed metal heaters 95 2006
2007/0133,960 In situ conversion process systems utilizing wellbores in at least two regions of a formation 104 2006
2007/0095,536 Cogeneration systems and processes for treating hydrocarbon containing formations 117 2006
2007/0095,537 Solution mining dawsonite from hydrocarbon containing formations with a chelating agent 118 2006
2007/0131,415 Solution mining and heating by oxidation for treating hydrocarbon containing formations 112 2006
 
MOBIL OIL CORPORATION (22)
4,380,930 System for transmitting ultrasonic energy through core samples 164 1981
4,410,042 In-situ combustion method for recovery of heavy oil utilizing oxygen and carbon dioxide as initial oxidant 171 1981
4,549,396 Conversion of coal to electricity 252 1982
4,530,401 Method for maximum in-situ visbreaking of heavy oil 246 1982
4,429,745 Oil recovery method 182 1982
4,458,767 Method for directionally drilling a first well to intersect a second well 201 1982
4,598,392 Vibratory signal sweep seismic prospecting method and apparatus 144 1983
4,573,530 In-situ gasification of tar sands utilizing a combustible gas 240 1983
4,698,149 Enhanced recovery of hydrocarbonaceous fluids oil shale 173 1983
4,598,772 Method for operating a production well in an oxygen driven in-situ combustion oil recovery process 172 1983
4,577,690 Method of using seismic data to monitor firefloods 135 1984
4,598,770 Thermal recovery method for viscous oil 275 1984
4,669,542 Simultaneous recovery of crude from multiple zones in a reservoir 247 1984
4,766,958 Method of recovering viscous oil from reservoirs with multiple horizontal zones 160 1987
4,787,452 Disposal of produced formation fines during oil recovery 259 1987
4,982,786 Use of CO.sub.2 /steam to enhance floods in horizontal wellbores 234 1989
5,211,230 Method for enhanced oil recovery through a horizontal production well in a subsurface formation by in-situ combustion 268 1992
5,339,904 Oil recovery optimization using a well having both horizontal and vertical sections 240 1992
5,377,756 Method for producing low permeability reservoirs using a single well 190 1993
5,411,086 Oil recovery by enhanced imbitition in low permeability reservoirs 158 1993
5,415,231 Method for producing low permeability reservoirs using steam 250 1994
5,431,224 Method of thermal stimulation for recovery of hydrocarbons 257 1994
 
AMOCO CORPORATION (15)
4,184,548 Method for determining the position and inclination of a flame front during in situ combustion of an oil shale retort 134 1978
4,274,487 Indirect thermal stimulation of production wells 255 1979
4,537,252 Method of underground conversion of coal 247 1984
4,662,439 Method of underground conversion of coal 247 1985
4,662,443 Combination air-blown and oxygen-blown underground coal gasification process 249 1985
4,756,367 Method for producing natural gas from a coal seam 233 1987
5,059,303 Oil stabilization 179 1989
5,388,640 Method for producing methane-containing gaseous mixtures 253 1993
5,388,641 Method for reducing the inert gas fraction in methane-containing gaseous mixtures obtained from underground formations 250 1993
5,388,642 Coalbed methane recovery using membrane separation of oxygen from air 250 1993
5,388,643 Coalbed methane recovery using pressure swing adsorption separation 247 1993
5,388,645 Method for producing methane-containing gaseous mixtures 253 1993
5,439,054 Method for treating a mixture of gaseous fluids within a solid carbonaceous subterranean formation 254 1994
5,454,666 Method for disposing of unwanted gaseous fluid components within a solid carbonaceous subterranean formation 259 1994
5,566,755 Method for recovering methane from a solid carbonaceous subterranean formation 171 1995
 
NOVELIS INC. (15)
2002/0084,056 Aluminium alloy strips with high surface homogeneity and method for making same 2001
2002/0084,056 Aluminium alloy strips with high surface homogeneity and method for making same 2001
2002/0084,056 Aluminium alloy strips with high surface homogeneity and method for making same 2001
2002/0084,056 Aluminium alloy strips with high surface homogeneity and method for making same 2001
2002/0084,056 Aluminium alloy strips with high surface homogeneity and method for making same 2001
2002/0084,056 Aluminium alloy strips with high surface homogeneity and method for making same 2001
2002/0084,056 Aluminium alloy strips with high surface homogeneity and method for making same 2001
2002/0084,056 Aluminium alloy strips with high surface homogeneity and method for making same 2001
2002/0084,056 Aluminium alloy strips with high surface homogeneity and method for making same 2001
2002/0084,056 Aluminium alloy strips with high surface homogeneity and method for making same 2001
2002/0084,056 Aluminium alloy strips with high surface homogeneity and method for making same 2001
2002/0084,056 Aluminium alloy strips with high surface homogeneity and method for making same 2001
2002/0084,056 Aluminium alloy strips with high surface homogeneity and method for making same 2001
2002/0084,056 Aluminium alloy strips with high surface homogeneity and method for making same 2001
2002/0084,056 Aluminium alloy strips with high surface homogeneity and method for making same 2001
 
BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM (9)
4,984,594 Vacuum method for removing soil contamination utilizing surface electrical heating 297 1989
5,190,405 Vacuum method for removing soil contaminants utilizing thermal conduction heating 284 1990
5,229,583 Surface heating blanket for soil remediation 271 1992
5,318,116 Vacuum method for removing soil contaminants utilizing thermal conduction heating 288 1993
5,553,189 Radiant plate heater for treatment of contaminated surfaces 264 1994
5,656,239 Method for recovering contaminants from soil utilizing electrical heating 268 1995
6,102,622 Remediation method 264 1998
5,997,214 Remediation method 262 1998
6,485,232 Low cost, self regulating heater for use in an in situ thermal desorption soil remediation system 245 2000
 
CHEVRON RESEARCH COMPANY (9)
4,299,086 Utilization of energy obtained by substoichiometric combustion of low heating value gases 259 1978
4,186,801 In situ combustion process for the recovery of liquid carbonaceous fuels from subterranean formations 251 1978
4,250,962 In situ combustion process for the recovery of liquid carbonaceous fuels from subterranean formations 247 1979
4,303,126 Arrangement of wells for producing subsurface viscous petroleum 166 1980
4,273,188 In situ combustion process for the recovery of liquid carbonaceous fuels from subterranean formations 248 1980
4,381,641 Substoichiometric combustion of low heating value gases 278 1980
4,366,668 Substoichiometric combustion of low heating value gases 263 1981
4,363,361 Substoichiometric combustion of low heating value gases 254 1981
4,828,031 In situ chemical stimulation of diatomite formations 177 1987
 
BAKER HUGHES INCORPORATED (8)
RE35386 Method for drilling directional wells 41 1994
5,782,301 Oil well heater cable 89 1996
6,088,294 Drilling system with an acoustic measurement-while-driving system for determining parameters of interest and controlling the drilling direction 177 1997
6,084,826 Measurement-while-drilling acoustic system employing multiple, segmented transmitters and receivers 146 1998
6,078,868 Reference signal encoding for seismic while drilling measurement 122 1999
6,427,124 Semblance processing for an acoustic measurement-while-drilling system for imaging of formation boundaries 127 1999
6,588,266 Monitoring of downhole parameters and tools utilizing fiber optics 130 2001
6,585,046 Live well heater cable 130 2001
 
TEXACO INC. (8)
4,524,826 Method of heating an oil shale formation 260 1982
4,592,423 Hydrocarbon stratum retorting means and method 246 1984
4,576,231 Method and apparatus for combating encroachment by in situ treated formations 265 1984
4,682,652 Producing hydrocarbons through successively perforated intervals of a horizontal well between two vertical wells 253 1986
5,632,336 Method for improving injectivity of fluids in oil reservoirs 247 1994
5,571,403 Process for extracting hydrocarbons from diatomite 163 1995
5,826,655 Method for enhanced recovery of viscous oil deposits 174 1996
2002/0004,533 Integration of shift reactors and hydrotreaters 87 2001
 
ATLANTIC RICHFIELD COMPANY (7)
4,399,866 Method for controlling the flow of subterranean water into a selected zone in a permeable subterranean carbonaceous deposit 185 1981
4,489,782 Viscous oil production using electrical current heating and lateral drain holes 273 1983
4,597,444 Method for excavating a large diameter shaft into the earth and at least partially through an oil-bearing formation 173 1984
4,662,437 Electrically stimulated well production system with flexible tubing conductor 137 1985
4,640,353 Electrode well and method of completion 190 1986
4,651,825 Enhanced well production 253 1986
4,744,245 Acoustic measurements in rock formations for determining fracture orientation 142 1986
 
STANDARD OIL COMPANY (INDIANA) (6)
4,265,307 Shale oil recovery 240 1978
4,353,418 In situ retorting of oil shale 259 1980
4,401,163 Modified in situ retorting of oil shale 170 1980
4,425,967 Ignition procedure and process for in situ retorting of oil shale 134 1981
4,457,374 Transient response process for detecting in situ retorting conditions 226 1982
4,552,214 Pulsed in situ retorting in an array of oil shale retorts 166 1984
 
WORLD ENERGY SYSTEMS, INC. (6)
4,199,024 Multistage gas generator 127 1979
4,597,441 Recovery of oil by in situ hydrogenation 279 1984
4,691,771 Recovery of oil by in-situ combustion followed by in-situ hydrogenation 255 1986
6,016,867 Upgrading and recovery of heavy crude oils and natural bitumens by in situ hydrovisbreaking 268 1998
6,016,868 Production of synthetic crude oil from heavy hydrocarbons recovered by in situ hydrovisbreaking 279 1998
6,328,104 Upgrading and recovery of heavy crude oils and natural bitumens by in situ hydrovisbreaking 271 2000
 
DELAWARE CAPITAL FORMATION, INC. (5)
4,717,814 Slotted autoregulating heater 144 1984
4,623,401 Heat treatment with an autoregulating heater 172 1986
4,814,587 High power self-regulating heater 131 1986
4,794,226 Self-regulating porous heater device 118 1986
5,073,625 Self-regulating porous heating device 121 1988
 
CANADIAN OCCIDENTAL PETROLEUM LTD. (4)
4,818,370 Process for converting heavy crudes, tars, and bitumens to lighter products in the presence of brine at supercritical conditions 276 1987
4,983,319 Preparation of low-viscosity improved stable crude oil transport emulsions 259 1988
5,340,467 Process for recovery of hydrocarbons and rejection of sand 288 1991
5,316,664 Process for recovery of hydrocarbons and rejection of sand 287 1992
 
CHEVRON RESEARCH AND TECHNOLOGY COMPANY (4)
5,054,551 In-situ heated annulus refining process 183 1990
5,085,276 Production of oil from low permeability formations by sequential steam fracturing 181 1990
5,145,003 Method for in-situ heated annulus refining process 193 1991
5,305,829 Oil production from diatomite formations by fracture steamdrive 180 1992
 
IIT RESEARCH INSTITUTE (4)
RE30738 Apparatus and method for in situ heat processing of hydrocarbonaceous formations 285 1980
4,498,535 Apparatus and method for in situ controlled heat processing of hydrocarbonaceous formations with a controlled parameter line 243 1982
4,545,435 Conduction heating of hydrocarbonaceous formations 163 1983
5,621,845 Apparatus for electrode heating of earth for recovery of subsurface volatiles and semi-volatiles 117 1995
 
UENTECH CORPORATION (4)
4,821,798 Heating system for rathole oil well 118 1987
5,099,918 Power sources for downhole electrical heating 249 1991
5,621,844 Electrical heating of mineral well deposits using downhole impedance transformation networks 269 1995
5,713,415 Low flux leakage cables and cable terminations for A.C. electrical heating of oil deposits 256 1996
 
EXXON RESEARCH AND ENGINEERING COMPANY (3)
4,458,757 In situ shale-oil recovery process 236 1983
5,935,421 Continuous in-situ combination process for upgrading heavy oil 192 1996
6,110,358 Process for manufacturing improved process oils using extraction of hydrotreated distillates 170 1999
 
HALLIBURTON ENERGY SERVICES, INC. (3)
5,899,958 Logging while drilling borehole imaging and dipmeter device 202 1995
5,926,437 Method and apparatus for seismic exploration 126 1997
6,736,222 Relative drill bit direction measurement 40 2002
 
INDUGAS, INC. (3)
4,913,065 In situ thermal waste disposal system 179 1989
5,020,596 Enhanced oil recovery system with a radiant tube heater 241 1990
5,082,055 Gas fired radiant tube heater 254 1991
 
TYCO INTERNATIONAL LTD., A CORPORATION OF BERMUDA (3)
4,698,583 Method of monitoring a heater for faults 123 1985
4,849,611 Self-regulating heater employing reactive components 132 1985
4,785,163 Method for monitoring a heater 117 1987
 
UNIVERSITY OF UTAH (3)
4,324,292 Process for recovering products from oil shale 246 1980
4,396,062 Apparatus and method for time-domain tracking of high-speed chemical reactions 264 1980
4,409,090 Process for recovering products from tar sand 260 1982
 
Z-SEIS CORPORATION (3)
6,269,310 System for eliminating headwaves in a tomographic process 121 1999
6,193,010 System for generating a seismic signal in a borehole 122 1999
6,196,350 Apparatus and method for attenuating tube waves in a borehole 120 1999
 
ALBERTA INNOVATES - ENERGY AND ENVIRONMENT SOLUTIONS (2)
5,456,315 Horizontal well gravity drainage combustion process for oil recovery 191 1994
6,026,914 Wellbore profiling system 145 1998
 
CDX GAS, LLC (2)
6,988,566 Acoustic position measurement system for well bore formation 21 2002
2004/0035,582 System and method for subterranean access 153 2002
 
CITIES SERVICE COMPANY (2)
4,412,585 Electrothermal process for recovering hydrocarbons 247 1982
4,501,445 Method of in-situ hydrogenation of carbonaceous material 253 1983
 
EDWARDS DEVELOPMENT CORP., A CORP OF NV. (2)
4,817,711 System for recovery of petroleum from petroleum impregnated media 284 1987
4,912,971 System for recovery of petroleum from petroleum impregnated media 185 1989
 
ENERGY RESEARCH CORPORATION (2)
4,772,634 Apparatus and method for methanol production using a fuel cell to regulate the gas composition entering the methanol synthesizer 247 1986
5,554,453 Carbonate fuel cell system with thermally integrated gasification 272 1995
 
EOR INTERNATIONAL, INC. (2)
4,524,827 Single well stimulation for the recovery of liquid hydrocarbons from subsurface formations 262 1983
5,751,895 Selective excitation of heating electrodes for oil wells 239 1996
 
HALLIBURTON COMPANY (2)
4,445,574 Continuous borehole formed horizontally through a hydrocarbon producing formation 167 1982
4,808,925 Three magnet casing collar locator 165 1987
 
ITT RESEARCH INSTITUTE (2)
4,485,869 Recovery of liquid hydrocarbons from oil shale by electromagnetic heating in situ 280 1982
4,645,004 Electro-osmotic production of hydrocarbons utilizing conduction heating of hydrocarbonaceous formations 30 1984
 
MAGRANGE, INC. (2)
5,064,006 Downhole combination tool 278 1988
5,230,387 Downhole combination tool 66 1991
 
MCDERMOTT TECHNOLOGY, INC. (2)
5,760,307 EMAT probe and technique for weld inspection 174 1995
6,155,117 Edge detection and seam tracking with EMATs 167 1999
 
METCAL, INC. (2)
4,752,673 Autoregulating heater 136 1982
4,695,713 Autoregulating, electrically shielded heater 166 1983
 
OCCIDENTAL OIL SHALE, INC. (2)
4,437,519 Reduction of shale oil pour point 166 1981
4,605,489 Upgrading shale oil by a combination process 181 1985
 
PHILLIPS PETROLEUM COMPANY (2)
4,474,238 Method and apparatus for treatment of subsurface formations 177 1982
4,885,080 Process for demetallizing and desulfurizing heavy crude oil 183 1988
 
PRATS, MICHAEL (2)
5,984,010 Hydrocarbon recovery systems and methods 248 1997
6,173,775 Systems and methods for hydrocarbon recovery 248 1999
 
PRODUCTION TECHNOLOGIES INTERNATIONAL, INC. (2)
4,716,960 Method and system for introducing electric current into a well 285 1986
5,207,273 Method and apparatus for pumping wells 252 1990
 
RAYCHEM CORPORATION (2)
4,417,782 Fiber optic temperature sensing 140 1980
4,701,587 Shielded heating element having intrinsic temperature control 166 1981
 
RAYCHEM LIMITED (2)
4,985,313 Wire and cable 142 1986
5,209,987 Wire and cable 142 1990
 
RWE-DEA AKTIENGESELLSCHAFT FUR MINERALOEL UND CHEMIE (2)
4,252,191 Method of recovering petroleum and bitumen from subterranean reservoirs 255 1979
4,390,973 Method for determining the extent of subsurface reaction involving acoustic signals 136 1981
 
SYNTROLEUM CORPORATION (2)
6,172,124 Process for converting gas to liquids 252 1997
6,085,512 Synthesis gas production system and method 255 1999
 
THERMON MANUFACTURING COMPANY (2)
4,645,906 Reduced resistance skin effect heat generating system 135 1985
5,512,732 Switch controlled, zone-type heating cable and method 165 1993
 
THOMPSON, GREG H. (2)
4,185,692 Underground linkage of wells for production of coal in situ 139 1978
4,250,230 Generating electricity from coal in situ 264 1979
 
ADVANCED ENGINEERING SOLUTIONS LTD. (1)
6,102,137 Apparatus and method for forming ducts and passageways 144 1998
 
AIR PRODUCTS AND CHEMICALS, INC. (1)
4,734,115 Low pressure process for C.sub.3.sup.+ liquids recovery from process product gas 175 1986
 
ALBERTA INNOVATES - TECHNOLOGY FUTURES (1)
6,412,559 Process for recovering methane and/or sequestering fluids 250 2000
 
ALBERTA RESEARCH COUNCIL INC. (1)
4,228,854 Enhanced oil recovery using electrical means 251 1979
 
AMINOIL, USA, INC. (1)
4,277,416 Process for producing methanol 254 1977
 
AMP INCORPORATED (1)
5,065,501 Generating electromagnetic fields in a self regulating temperature heater by positioning of a current return bus 119 1990
 
ANADARKO PETROLEUM CORPORATION (1)
2003/0029,617 Apparatus, method and system for single well solution-mining 152 2001
 
BATTELLE MEMORIAL INSTITUTE (1)
5,545,803 Heating of solid earthen material, measuring moisture and resistivity 155 1994
 
BHP MINERALS INTERNATIONAL (1)
5,968,349 Extraction of bitumen from bitumen froth and biotreatment of bitumen froth tailings generated from tar sands 276 1998
 
BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY (1)
5,730,550 Method for placement of a permeable remediation zone in situ 35 1996
 
CARBOTEK, INC. (1)
4,694,907 Thermally-enhanced oil recovery method and apparatus 273 1986
 
CENTRIFLOW LLC (1)
2002/0153,141 Method for pumping fluids 125 2001
 
CHAMBERS DEVELOPMENT CO., INC. (1)
5,295,763 Method for controlling gas migration from a landfill 172 1992
 
COMPUTALOG LTD. (1)
6,192,748 Dynamic orienting reference system for directional drilling 190 1998
 
CONCEPT R.K.K. LIMITED (1)
4,860,544 Closed cryogenic barrier for containment of hazardous material migration in the earth 277 1988
 
CONCEPT RKK, LIMITED (1)
4,974,425 Closed cryogenic barrier for containment of hazardous material migration in the earth 275 1989
 
CONOCO INC. (1)
4,418,752 Thermal oil recovery with solvent recirculation 168 1982
 
CONOCOPHILLIPS COMPANY (1)
5,411,104 Coalbed methane drilling 309 1994
 
DCNS SA (1)
5,861,137 Steam reformer with internal hydrogen purification 417 1996
 
DEN NORSKE STATS OLJESELSKAP A.S. (1)
5,877,996 Transducer arrangement 22 1996
 
DOVER TECHNOLOGIES INTERNATIONAL, INC. (1)
5,182,427 Self-regulating heater utilizing ferrite-type body 138 1990
 
DRESSER INDUSTRIES, INC. (1)
4,852,648 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 76 1987
 
E.R. JOHNSON ASSOCIATES, INC. A CORP. OF DISTRICT OF COLUMBIA (1)
4,428,700 Method for disposing of waste materials 188 1981
 
EARTH TOOL COMPANY, LLC (1)
2002/0112,890 Conduit pulling apparatus and method for use in horizontal drilling 141 2002
 
ELECTRIC POWER RESEARCH INSTITUTE, INC. (1)
5,911,898 Method and apparatus for providing multiple autoregulated temperatures 117 1995
 
ELEKTRA ENERGIE A.G. (1)
4,456,065 Heavy oil recovering 269 1981
 
ENEL (ENTE NAZIONALE PER L'ENERGIA ELETTRICA) & CISE S.P.A. (1)
5,437,506 System for measuring the transfer time of a sound-wave in a gas and thereby calculating the temperature of the gas 246 1993
 
ENERGY, UNITED STATES DEPARTMENT OF (1)
4,385,661 Downhole steam generator with improved preheating, combustion and protection features 137 1981
 
ENGELHARD CORPORATION (1)
4,927,857 Method of methanol production 280 1989
 
EUREKA OIL ASA (1)
6,499,536 Method to increase the oil production from an oil reservoir 183 2000
 
EXXON PRODUCTION RESEARCH COMPANY (1)
4,390,067 Method of treating reservoirs containing very viscous crude oil or bitumen 348 1981
 
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY (1)
2002/0112,987 Slurry hydroprocessing for heavy oil upgrading using supported slurry catalysts 194 2000
 
EXXONMOBIL UPSTREAM RESEARCH COMPANY (1)
5,339,897 Recovery and upgrading of hydrocarbon utilizing in situ combustion and horizontal wells 304 1992
 
FINE PARTICLE TECHNOLOGY CORP. (1)
4,926,941 Method of producing tar sand deposits containing conductive layers 202 1989
 
FRAMO ENGINEERING AS (1)
5,285,846 Thermal mineral extraction system 252 1992
 
GAS TECHNOLOGY INSTITUTE (1)
5,759,022 Method and system for reducing NO.sub.x and fuel emissions in a furnace 104 1995
 
GEOPETROL EQUIPMENT LTD. (1)
5,985,138 Tar sands extraction process 257 1998
 
GULF CANADA RESOURCES LIMITED/RESSOURCES GULF CANADA LIMITEE (1)
4,501,326 In-situ recovery of viscous hydrocarbonaceous crude oil 243 1983
 
GULF OIL CORPORATION, PITTSBURGH (1)
4,637,464 In situ retorting of oil shale with pulsed water purge 250 1984
 
GULF RESEARCH AND DEVELOPMENT COMPANY, A CORP. OF DE. (1)
4,299,285 Underground gasification of bituminous coal 243 1980
 
HARMON, JERALD L. (1)
6,584,406 Downhole process control method utilizing seismic communication 174 2000
 
HRUBETZ ENVIRONMENTAL SERVICES, INC. (1)
5,011,329 In situ soil decontamination method and apparatus 177 1990
 
INDEPENDENT ENERGY PARTNERS, INC. (1)
6,684,948 Apparatus and method for heating subterranean formations using fuel cells 173 2002
 
INSTITUT FRANCAIS DU PETROLE (1)
5,363,094 Stationary system for the active and/or passive monitoring of an underground deposit 186 1992
 
INTERCONTINENTAL ECONERGY ASSOCIATES, INC. (1)
4,452,491 Recovery of hydrocarbons from deep underground deposits of tar sands 140 1981
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
4,577,503 Method and device for detecting a specific acoustic spectral feature 147 1984
 
INTERNATIONAL COAL REFINING COMPANY (1)
4,397,732 Process for coal liquefaction employing selective coal feed 242 1982
 
IRIS ASSOCIATES (1)
4,256,945 Alternating current electrically resistive heating element having intrinsic temperature control 264 1979
 
JUDD, DANIEL (1)
4,856,587 Recovery of oil from oil-bearing formation by continually flowing pressurized heated gas through channel alongside matrix 246 1988
 
JUSTHEIM PERTROLEUM COMPANY (1)
4,384,614 Method of retorting oil shale by velocity flow of super-heated air 182 1981
 
KELLOGG BROWN & ROOT, INC. (1)
6,357,526 Field upgrading of heavy oil and bitumen 190 2000
 
KRAFTWERK UNION AKTIENGESELLSCHAFT (1)
4,608,818 Medium-load power-generating plant with integrated coal gasification plant 251 1984
 
KRUPP KOPPERS GMBH (1)
4,994,093 Method of producing methanol synthesis gas 248 1990
 
LOCKHEED MARTIN CORPORATION (1)
6,467,543 System and process for secondary hydrocarbon recovery 180 2000
 
LONGYEAR COMPANY (1)
4,823,890 Reverse circulation bit apparatus 126 1988
 
M.W. KELLOGG COMPANY, THE (1)
4,407,973 Methanol from coal and natural gas 249 1982
 
MAST AUTOMATION, INC. (1)
5,777,229 Sensor transport system for combination flash butt welder 165 1996
 
MEGGITT AVIOINICS, INC. (1)
5,828,797 Fiber optic linked flame sensor 143 1996
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
4,412,124 Electrode unit for electrically heating underground hydrocarbon deposits 245 1981
 
MOTOREN-WERKE MANNHEIM AG (1)
4,378,048 Substoichiometric combustion of low heating value gases using different platinum catalysts 244 1981
 
NENNIGER, JOHN (1)
5,517,593 Control system for well stimulation apparatus with response time temperature rise used in determining heater control temperature setpoint 263 1995
 
NEXANS (1)
2002/0028,070 HEATING SYSTEM FOR CRUDE OIL TRANSPORTING METALLIC TUBES 114 1999
 
NKK CORPORATION (1)
5,261,490 Method for dumping and disposing of carbon dioxide gas and apparatus therefor 256 1992
 
NOWSCO WELL SERVICE LTD. (1)
6,015,015 Insulated and/or concentric coiled tubing 274 1997
 
OCCIDENTAL SHALE INC. (1)
4,623,444 Upgrading shale oil by a combination process 181 1985
 
OIL TRIEVAL CORPORATION (1)
4,305,463 Oil recovery method and apparatus 254 1970
 
ORS MERGER CORPORATION, A GENERAL CORP. OF OK (1)
4,662,438 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 252 1985
 
PARHELION, INC. (1)
5,097,903 Method for recovering intractable petroleum from subterranean formations 191 1991
 
PATTON CONSULTING, INC. (1)
5,103,920 Surveying system and method for locating target subterranean bodies 177 1990
 
PETROLEO BRASILEIRO S.A. - PETROBRAS (1)
5,182,792 Process of electric pipeline heating utilizing heating elements inserted in pipelines 243 1991
 
PIRSON, JACQUE (1)
4,491,179 Method for oil recovery by in situ exfoliation drive 135 1982
 
PRESSSOL LTD. (1)
6,854,534 Two string drilling system using coil tubing 120 2003
 
QUICK CONNECTORS, INC. (1)
5,289,882 Sealed electrical conductor method and arrangement for use with a well bore in hazardous areas 267 1991
 
RAMCOR, INC. (1)
4,197,911 Process for in situ coal gasification 241 1978
 
RAMEX SYN-FUELS INTERNATIONAL, INC. (1)
4,928,765 Method and apparatus for shale gas recovery 252 1988
 
RANGEWEST TECHNOLOGIES LTD. (1)
6,039,121 Enhanced lift method and apparatus for the production of hydrocarbons 136 1997
 
RAYCHEM GMBH (1)
4,733,057 Sheet heater 140 1986
 
RAYCHEM S.A. (1)
5,579,575 Method and apparatus for forming an electrical connection 121 1994
 
RAYTHEON COMPANY (1)
4,457,365 In situ radio frequency selective heating system 266 1981
 
RED OAK PARTNERSHIP, L.P., THE (1)
5,435,666 Methods for isolating a water table and for soil remediation 187 1993
 
RESOURCE TECHNOLOGY ASSOCIATES (1)
5,008,085 Apparatus for thermal treatment of a hydrocarbon stream 251 1989
 
RKK, LTD (1)
5,050,386 Method and apparatus for containment of hazardous material migration in the earth 270 1990
 
ROBERT L.MAGNIE AND ASSOCIATES,INC. A CORP OF COLO. (1)
4,183,405 Enhanced recoveries of petroleum and hydrogen from underground reservoirs 261 1978
 
ROCKWELL INTERNATIONAL CORPORATION (1)
4,498,531 Emission controller for indirect fired downhole steam generators 105 1982
 
S-CAL RESEARCH CORPORATION (1)
4,706,751 Heavy oil recovery process 226 1986
 
SCHLUMBERGER TECHNOLOGIES, INC. (1)
6,354,373 Expandable tubing for a well bore hole and method of expanding 381 1998
 
SCIENCE & ENGINEERING ASSOCIATES, INC. (1)
6,035,701 Method and system to locate leaks in subsurface containment structures using tracer gases 173 1998
 
SCIENTIFIC ENGINEERING INSTRUMENTS, INC. (1)
5,349,859 Method and apparatus for measuring acoustic wave velocity using impulse response 247 1991
 
SCIOTO COUNTY REGIONAL WATER DISTRICT #1 (1)
6,422,318 Horizontal well system 157 2000
 
SCOTOIL SERVICES LIMITED (1)
6,805,194 Gas and oil production 117 2002
 
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. (1)
4,605,680 Conversion of synthesis gas to diesel fuel and gasoline 252 1985
 
SOCIETE NATIONALE ELF AQUITAINE (1)
4,513,816 Sealing system for a well bore in which a hot fluid is circulated 242 1984
 
SOUTHERN CALIFORNIA GAS COMPANY (1)
5,769,569 In-situ thermal desorption of heavy hydrocarbons in vadose zone 136 1996
 
STILL-MAN HEATING PRODUCTS, INC. (1)
5,066,852 Thermoplastic end seal for electric heating elements 142 1990
 
SULCON, INC. (1)
4,518,548 Method of overlaying sulphur concrete on horizontal and vertical surfaces 163 1983
 
TARIM ASSOCIATES FOR SCIENTIFIC MINERAL AND OIL EXPLORATION AG (1)
5,868,202 Hydrologic cells for recovery of hydrocarbons or thermal energy from coal, oil-shale, tar-sands and oil-bearing formations 318 1997
 
TERRA TEK, INC. (1)
4,384,613 Method of in-situ retorting of carbonaceous material for recovery of organic liquids and gases 261 1980
 
THE BABCOCK & WILCOX COMPANY (1)
4,848,924 Acoustic pyrometer 258 1987
 
THE BADGER COMPANY, INC. (1)
4,193,451 Method for production of organic products from kerogen 250 1977
 
THE BOARD OF REGENTS OF THE UNIVERSITY OF OKLAHOMA (1)
5,201,219 Method and apparatus for measuring free hydrocarbons and hydrocarbons potential from whole core 230 1990
 
THE BOC GROUP, INC. (1)
5,332,036 Method of recovery of natural gases from underground coal formations 117 1992
 
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA (1)
5,525,322 Method for simultaneous recovery of hydrogen from water and from hydrocarbons 302 1994
 
THE TEXAS A&M UNIVERSITY SYSTEM (1)
5,305,239 Ultrasonic non-destructive evaluation of thin specimens 165 1989
 
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF COMMERCE (1)
5,652,389 Non-contact method and apparatus for inspection of inertia welds 186 1996
 
TOMOSEIS, INC. (1)
6,388,947 Multi-crosswell profile 3D imaging and method 142 1998
 
TOTAL FINA ELF (1)
2002/0197,174 Electrical pump, and method for using plurality of submersible electrical pumps for well completion 2002
 
TRANSPACIFIC INFORMATION, LLC (1)
2002/0027,612 Spatio-temporal channel for images 3 2001
 
TUBEL TECHNOLOGIES, INC. (1)
6,913,079 Method and system for monitoring smart structures utilizing distributed optical sensors 138 2001
 
TYCO ELECTRONICS CORPORATION (1)
6,288,372 Electric cable having braidless polymeric ground plane providing fault detection 144 1999
 
UENTECH INTERNATIONAL CORPORATION (1)
6,353,706 Optimum oil-well casing heating 192 2000
 
UNION OIL COMPANY OF CALIFORNIA (1)
5,126,037 Geopreater heating method and apparatus 265 1990
 
UNIVERSITY OF KENTUCKY RESEARCH FOUNDATION (1)
4,776,638 Method and apparatus for conversion of coal in situ 266 1987
 
VESOJUZNY NAUCHNO-ISSLEDOVATELSKY INSTITUT ISPOLZOVANIA GAZA V NARODNOM KHOZYAISTVE I PODZEMNOGO KHRANENIA NEFTI, NEFTEPRODUKTOV I SZHIZHENNYKH GAZOV (VNIIPROMGAZ) (1)
4,440,224 Method of underground fuel gasification 144 1979
 
W. B. COMBUSTION, INC. (1)
4,401,099 Single-ended recuperative radiant tube assembly and method 118 1980
 
WESTERN ATLAS INTERNATIONAL, INC. (1)
4,282,587 Method for monitoring the recovery of minerals from shallow geological formations 140 1979
 
WESTERN RESEARCH INSTITUTE (1)
4,848,460 Contained recovery of oily waste 156 1988
 
WORCESTER POLYTECHNIC INSTITUTE (1)
6,152,987 Hydrogen gas-extraction module and method of fabrication 282 1998
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (26)
4,228,853 Petroleum production method 123 1978
4,243,101 Coal gasification method 251 1978
4,446,917 Method and apparatus for producing viscous or waxy crude oils 130 1979
4,306,621 Method for in situ coal gasification operations 251 1980
4,423,311 Electric heating apparatus for de-icing pipes 252 1981
4,444,255 Apparatus and process for the recovery of oil 247 1981
4,344,483 Multiple-site underground magnetic heating of hydrocarbons 250 1981
4,444,258 In situ recovery of oil from oil shale 255 1981
4,455,215 Process for the geoconversion of coal into oil 133 1982
4,442,896 Treatment of underground beds 206 1982
4,479,541 Method and apparatus for recovery of oil, gas and mineral deposits by panel opening 232 1982
4,609,041 Well hot oil system 115 1983
4,538,682 Method and apparatus for removing oil well paraffin 120 1983
4,762,425 System for temperature profile measurement in large furnances and kilns and method therefor 256 1987
4,895,206 Pulsed in situ exothermic shock wave and retorting process for hydrocarbon recovery and detoxification of selected wastes 251 1989
5,027,896 Method for in-situ recovery of energy raw material by the introduction of a water/oxygen slurry 156 1990
5,082,054 In-situ tuned microwave oil extraction process 315 1990
5,217,076 Method and apparatus for improved recovery of oil from porous, subsurface deposits (targevcir oricess) 344 1991
5,247,994 Method of stimulating oil wells 24 1992
5,360,067 Vapor-extraction system for removing hydrocarbons from soil 160 1993
5,624,188 Acoustic thermometer 250 1994
5,823,256 Ferrule--type fitting for sealing an electrical conduit in a well head barrier 65 1996
6,112,808 Method and apparatus for subterranean thermal conditioning 239 1997
5,984,582 Method of extracting a hollow unit laid in the ground 145 1997
2005/0269,091 Reducing viscosity of oil for production from a hydrocarbon containing formation 93 2005
2006/0051,080 Oilfield tool annulus heater 9 2005

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
SHELL OIL COMPANY (78)
8,224,165 Temperature limited heater utilizing non-ferromagnetic conductor 2 2006
8,070,840 Treatment of gas from an in situ conversion process 17 2006
8,027,571 In situ conversion process systems utilizing wellbores in at least two regions of a formation 21 2006
7,986,869 Varying properties along lengths of temperature limited heaters 24 2006
7,942,197 Methods and systems for producing fluid from an in situ conversion process 31 2006
7,860,377 Subsurface connection methods for subsurface heaters 44 2006
7,831,133 Insulated conductor temperature limited heater for subsurface heating coupled in a three-phase WYE configuration 40 2006
7,831,134 Grouped exposed metal heaters 40 2006
7,635,025 Cogeneration systems and processes for treating hydrocarbon containing formations 66 2006
7,591,310 Methods of hydrotreating a liquid stream to remove clogging compounds 78 2006
7,584,789 Methods of cracking a crude product to produce additional crude products 76 2006
7,581,589 Methods of producing alkylated hydrocarbons from an in situ heat treatment process liquid 81 2006
7,559,367 Temperature limited heater with a conduit substantially electrically isolated from the formation 84 2006
8,381,806 Joint used for coupling long heaters 0 2007
8,083,813 Methods of producing transportation fuel 14 2007
7,912,358 Alternate energy source usage for in situ heat treatment processes 32 2007
7,866,385 Power systems utilizing the heat of produced formation fluid 39 2007
7,793,722 Non-ferromagnetic overburden casing 39 2007
7,785,427 High strength alloys 40 2007
7,683,296 Adjusting alloy compositions for selected properties in temperature limited heaters 58 2007
7,673,786 Welding shield for coupling heaters 57 2007
7,631,689 Sulfur barrier for use with in situ processes for treating formations 68 2007
7,610,962 Sour gas injection for use with in situ heat treatment 58 2007
7,604,052 Compositions produced using an in situ heat treatment process 76 2007
7,798,221 In situ recovery from a hydrocarbon containing formation 46 2007
7,845,411 In situ heat treatment process utilizing a closed loop heating system 38 2007
7,841,401 Gas injection to inhibit migration during an in situ heat treatment process 39 2007
7,730,946 Treating tar sands formations with dolomite 47 2007
7,730,945 Using geothermal energy to heat a portion of a formation for an in situ heat treatment process 48 2007
7,730,947 Creating fluid injectivity in tar sands formations 47 2007
7,717,171 Moving hydrocarbons through portions of tar sands formations with a fluid 50 2007
7,703,513 Wax barrier for use with in situ processes for treating formations 57 2007
7,681,647 Method of producing drive fluid in situ in tar sands formations 57 2007
7,677,310 Creating and maintaining a gas cap in tar sands formations 43 2007
7,677,314 Method of condensing vaporized water in situ to treat tar sands formations 42 2007
7,673,681 Treating tar sands formations with karsted zones 44 2007
7,644,765 Heating tar sands formations while controlling pressure 55 2007
7,635,024 Heating tar sands formations to visbreaking temperatures 67 2007
7,631,690 Heating hydrocarbon containing formations in a spiral startup staged sequence 69 2007
7,640,980 Thermal processes for subsurface formations 54 2008
8,381,815 Production from multiple zones of a tar sands formation 0 2008
8,327,681 Wellbore manufacturing processes for in situ heat treatment processes 0 2008
8,042,610 Parallel heater system for subsurface formations 19 2008
7,950,453 Downhole burner systems and methods for heating subsurface formations 32 2008
7,931,086 Heating systems for heating subsurface formations 36 2008
7,849,922 In situ recovery from residually heated sections in a hydrocarbon containing formation 40 2008
7,841,408 In situ heat treatment from multiple layers of a tar sands formation 40 2008
7,832,484 Molten salt as a heat transfer fluid for heating a subsurface formation 41 2008
7,798,220 In situ heat treatment of a tar sands formation after drive process treatment 40 2008
8,272,455 Methods for forming wellbores in heated formations 0 2008
8,240,774 Solution mining and in situ treatment of nahcolite beds 1 2008
8,196,658 Irregular spacing of heat sources for treating hydrocarbon containing formations 3 2008
8,162,059 Induction heaters used to heat subsurface formations 7 2008
8,146,669 Multi-step heater deployment in a subsurface formation 8 2008
8,113,272 Three-phase heaters with common overburden sections for heating subsurface formations 0 2008
7,866,386 In situ oxidation of subsurface formations 35 2008
7,866,388 High temperature methods for forming oxidizer fuel 36 2008
8,177,305 Heater connections in mines and tunnels for use in treating subsurface hydrocarbon containing formations 7 2009
8,172,335 Electrical current flow between tunnels for use in heating subsurface hydrocarbon containing formations 6 2009
8,162,405 Using tunnels for treating subsurface hydrocarbon containing formations 7 2009
8,151,907 Dual motor systems and non-rotating sensors for use in developing wellbores in subsurface formations 10 2009
8,353,347 Deployment of insulated conductors for treating subsurface formations 0 2009
8,281,861 Circulated heated transfer fluid heating of subsurface hydrocarbon formations 1 2009
8,267,170 Offset barrier wells in subsurface formations 3 2009
8,267,185 Circulated heated transfer fluid systems used to treat a subsurface formation 2 2009
8,261,832 Heating subsurface formations with fluids 3 2009
8,256,512 Movable heaters for treating subsurface hydrocarbon containing formations 0 2009
8,220,539 Controlling hydrogen pressure in self-regulating nuclear reactors used to treat a subsurface formation 2 2009
7,942,203 Thermal processes for subsurface formations 34 2010
8,434,555 Irregular pattern treatment of a subsurface formation 0 2010
8,327,932 Recovering energy from a subsurface formation 0 2010
8,192,682 High strength alloys 4 2010
8,225,866 In situ recovery from a hydrocarbon containing formation 1 2010
8,233,782 Grouped exposed metal heaters 0 2010
8,356,935 Methods for assessing a temperature in a subsurface formation 0 2010
8,257,112 Press-fit coupling joint for joining insulated conductors 0 2010
8,151,880 Methods of making transportation fuel 6 2010
8,230,927 Methods and systems for producing fluid from an in situ conversion process 0 2011
 
COMPANY, SHELL OIL (1)
8,191,630 Creating fluid injectivity in tar sands formations 4 2010
 
ENERGY, UNITED STATES DEPARTMENT OF (1)
7,597,147 Temperature limited heaters using phase transformation of ferromagnetic material 76 2007
 
VOITH PATENT GMBH (1)
7,802,377 Drying cylinder 1 2007
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (1)
8,296,968 Surface drying apparatus and method 0 2004

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