NMR logging of natural gas in reservoirs

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5498960
SERIAL NO

08326561

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A lithology-independent method of well logging the gas saturation in a reservoir containing natural gas. The method makes use of a pulsed NMR logging tool utilizing a recovery time that is greater than the relaxation time of hydrocarbon gas within the formation. In a preferred embodiment, two different NMR logs are obtained: one with a recovery time significantly shorter than the longitudinal relaxation time, T1, of the gas and one with a recovery time equal to or longer than T1. The amplitudes of the two logs are subtracted and the remainder divided by the hydrogen index of the gas at reservoir conditions to determine the pore volume occupied by gas.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SHELL OIL COMPANYHOUSTON, TX2311

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Akkurt, Ridvan Mandeville, LA 22 1051
Tutunjian, Pierre N Houston, TX 6 1210
Vinegar, Harold J Houston, TX 330 67096

Cited Art Landscape

Patent Info (Count) # Cites Year
 
SOUTHWEST RESEARCH INSTITUTE (1)
* 5122746 Hydrocarbon gas measurements using nuclear magnetic resonance 32 1990
 
PARAMAGNETIC ,45 BUCKEYE ROAD,PORTOLA VALLEY,CALIFORNIA 94025 (1)
* 4528508 Nuclear magnetic resonance method and apparatus for remote detection and volumetric measurement of petroleum reserves 50 1982
 
SCHLUMBERGER TECHNOLOGY CORPORATION (1)
* 5389877 Nuclear magnetic resonance pulse sequences for determining bound fluid volume 29 1991
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (4)
6445187 System for the measurement of electrical characteristics of geological formations from within steel cased wells using magnetic circuits 8 2000
* 2005/0030,021 Systems and methods for NMR logging 11 2004
* 2007/0241,750 System and methods for T1-based logging 2 2007
* 2009/0072,825 SYSTEMS AND METHODS FOR DEEP-LOOKING NMR LOGGING 6 2008
 
University Technologies International Inc. (1)
6630357 Quantification of bitumen using NMR 8 2001
 
Wollin Ventures, Inc. (2)
* 6166540 Method of resistivity well logging utilizing nuclear magnetic resonance 13 1997
6342784 Method for resistivity well logging utilizing nuclear magnetic resonance 7 2000
 
REEVES WIRELINE TECHNOLOGIES LIMITED (2)
* 6909969 Method of through-casing gas detection 2 2003
* 2003/0216,866 Method of through-casing gas detection 2 2003
 
Wollin Ventures, Inc. (1)
6545471 Method for resistivity well logging utilizing nuclear magnetic resonance 6 2001
 
COMPANY, SHELL OIL (1)
8191630 Creating fluid injectivity in tar sands formations 58 2010
 
WESTERN ATLAS INTERNATIONAL, INC. (1)
* 6084408 Methods for acquisition and processing of nuclear magnetic resonance signals for determining fluid properties in petroleum reservoirs having more than one fluid phase 14 1998
 
LANDMARK GRAPHICS CORPORATION (2)
* 8507868 Systems and methods for determining fluid mobility in rock samples 1 2011
* 2012/0223,235 Systems and Methods for Determining Fluid Mobility in Rock Samples 1 2011
 
GAS SENSING TECHNOLOGY CORP. (1)
* RE44728 In-situ detection and analysis of methane in coal bed methane formations with spectrometers 0 2006
 
HALLIBURTON ENERGY SERVICES, INC. (38)
* 5696448 NMR system and method for formation evaluation using diffusion and relaxation log measurements 45 1995
* 5936405 System and method for lithology-independent gas detection using multifrequency gradient NMR logging 63 1996
* 6005389 Pulse sequences and interpretation techniques for NMR measurements 50 1997
6242912 System and method for lithology-independent gas detection using multifrequency gradient NMR logging 30 1997
6204663 Pulse sequence and method for suppression of magneto-acoustic artifacts in NMR data 21 1997
* 6072314 NMR interpretation technique using error minimization with variable T2 cutoff 3 1997
* 6111408 Nuclear magnetic resonance sensing apparatus and techniques for downhole measurements 59 1997
* 6051973 Method for formation evaluation while drilling 36 1997
* 6023164 Eccentric NMR well logging apparatus and method 26 1998
* 6107796 Method and apparatus for differentiating oil based mud filtrate from connate oil 34 1998
6268726 Method and apparatus for nuclear magnetic resonance measuring while drilling 63 1999
6316940 System and method for identification of hydrocarbons using enhanced diffusion 7 1999
6377042 Method and apparatus for merging of NMR echo trains in the time domain 12 1999
6255819 System and method for geologically-enhanced magnetic resonance imaging logs 30 1999
6366087 NMR logging apparatus and methods for fluid typing 18 1999
6242913 Method for formation evaluation while drilling 14 2000
6661226 NMR apparatus and methods for measuring volumes of hydrocarbon gas and oil 14 2000
6541969 Method and apparatus for improving the vertical resolution of NMR logs 29 2000
7135862 NMR logging using time-domain averaging 4 2001
* 6646437 System and method for clay typing using NMR-based porosity modeling 22 2001
6531868 System and methods for formation evaluation while drilling 22 2001
6512371 System and method for determining oil, water and gas saturations for low-field gradient NMR logging tools 36 2001
6525534 System and methods for NMR signal processing without phase alternated pair stacking 17 2001
6362619 Method and apparatus for nuclear magnetic resonance measuring while drilling 41 2001
6583621 Method and apparatus for nuclear magnetic resonance measuring while drilling 35 2002
6825658 NMR logging apparatus and methods for fluid typing 5 2002
* 2003/0016,012 NMR logging apparatus and methods for fluid typing 2 2002
6956371 Method and apparatus for detecting diffusion sensitive phases with estimation of residual error in NMR logs 16 2003
* 2004/0008,027 Method and apparatus for detecting diffusion sensitive phases with estimation of residual error in NMR logs 6 2003
6975112 Systems and methods of determining motion tool parameters in borehole logging 14 2003
* 2004/0251,898 Systems and methods of determining motion tool parameters in borehole logging 6 2003
6825659 Method and apparatus for nuclear magnetic resonance measuring while drilling 21 2003
* 2004/0124,837 Method and apparatus for nuclear magnetic resonance measuring while drilling 4 2003
* 2005/0221,495 Method and composition for improving NMR analysis of formation fluids 4 2004
7463027 Systems and methods for deep-looking NMR logging 19 2004
7501818 System and methods for T1-based logging 1 2007
7733086 Systems and methods for deep-looking NMR logging 10 2008
7755354 System and methods for T1-based logging 3 2008
 
LAWRENCE LIVERMORE NATIONAL SECURITY, LLC (1)
6177794 Use of earth field spin echo NMR to search for liquid minerals 2 1998
 
CASE WESTERN RESERVE UNIVERSITY (4)
* 6995560 Chemical species suppression for MRI imaging using spiral trajectories with off-resonance correction 14 2004
* 7042215 Three point dixon techniques in MRI spiral trajectories with off-resonance correction where each TE is a multiple of 2.2 milliseconds 16 2004
* 2005/0033,153 Dixon Techniques in spiral trajectories with off-resonance correction 0 2004
7545966 Efficient methods for reconstruction and deblurring of magnetic resonance images 15 2004
 
SHELL OIL COMPANY (284)
* 6094048 NMR logging of natural gas reservoirs 287 1997
7096941 In situ thermal processing of a coal formation with heat sources located at an edge of a coal layer 170 2001
7096953 In situ thermal processing of a coal formation using a movable heating element 216 2001
7086468 In situ thermal processing of a hydrocarbon containing formation using heat sources positioned within open wellbores 189 2001
7036583 In situ thermal processing of a hydrocarbon containing formation to increase a porosity of the formation 200 2001
7017661 Production of synthesis gas from a coal formation 2 2001
6997255 In situ thermal processing of a hydrocarbon containing formation in a reducing environment 174 2001
6994160 In situ thermal processing of a hydrocarbon containing formation to produce hydrocarbons having a selected carbon number range 207 2001
6994161 In situ thermal processing of a coal formation with a selected moisture content 16 2001
6994168 In situ thermal processing of a hydrocarbon containing formation with a selected hydrogen to carbon ratio 174 2001
6991031 In situ thermal processing of a coal formation to convert a selected total organic carbon content into hydrocarbon products 3 2001
6973967 Situ thermal processing of a coal formation using pressure and/or temperature control 176 2001
6966372 In situ thermal processing of a hydrocarbon containing formation to produce oxygen containing formation fluids 182 2001
6959761 In situ thermal processing of a coal formation with a selected ratio of heat sources to production wells 177 2001
6953087 Thermal processing of a hydrocarbon containing formation to increase a permeability of the formation 212 2001
6948563 In situ thermal processing of a hydrocarbon containing formation with a selected hydrogen content 181 2001
6913078 In Situ thermal processing of hydrocarbons within a relatively impermeable formation 201 2001
6910536 In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor 179 2001
6902003 In situ thermal processing of a hydrocarbon containing formation having a selected total organic carbon content 177 2001
6902004 In situ thermal processing of a hydrocarbon containing formation using a movable heating element 191 2001
6896053 In situ thermal processing of a hydrocarbon containing formation using repeating triangular patterns of heat sources 215 2001
6889769 In situ thermal processing of a hydrocarbon containing formation with a selected moisture content 186 2001
6880635 In situ production of synthesis gas from a coal formation, the synthesis gas having a selected H2 to CO ratio 197 2001
6877554 In situ thermal processing of a hydrocarbon containing formation using pressure and/or temperature control 191 2001
6871707 In situ thermal processing of a hydrocarbon containing formation with carbon dioxide sequestration 193 2001
6866097 In situ thermal processing of a coal formation to increase a permeability/porosity of the formation 199 2001
6820688 In situ thermal processing of coal formation with a selected hydrogen content and/or selected H/C ratio 216 2001
6805195 In situ thermal processing of a hydrocarbon containing formation to produce hydrocarbon fluids and synthesis gas 226 2001
6789625 In situ thermal processing of a hydrocarbon containing formation using exposed metal heat sources 238 2001
6769483 In situ thermal processing of a hydrocarbon containing formation using conductor in conduit heat sources 249 2001
6769485 In situ production of synthesis gas from a coal formation through a heat source wellbore 237 2001
6763886 In situ thermal processing of a coal formation with carbon dioxide sequestration 217 2001
6761216 In situ thermal processing of a coal formation to produce hydrocarbon fluids and synthesis gas 234 2001
6758268 In situ thermal processing of a hydrocarbon containing formation using a relatively slow heating rate 238 2001
6752210 In situ thermal processing of a coal formation using heat sources positioned within open wellbores 260 2001
6749021 In situ thermal processing of a coal formation using a controlled heating rate 236 2001
6745831 In situ thermal processing of a hydrocarbon containing formation by controlling a pressure of the formation 263 2001
6745832 Situ thermal processing of a hydrocarbon containing formation to control product composition 225 2001
6745837 In situ thermal processing of a hydrocarbon containing formation using a controlled heating rate 246 2001
6742587 In situ thermal processing of a coal formation to form a substantially uniform, relatively high permeable formation 233 2001
6742588 In situ thermal processing of a hydrocarbon containing formation to produce formation fluids having a relatively low olefin content 270 2001
6742589 In situ thermal processing of a coal formation using repeating triangular patterns of heat sources 232 2001
6742593 In situ thermal processing of a hydrocarbon containing formation using heat transfer from a heat transfer fluid to heat the formation 240 2001
6739393 In situ thermal processing of a coal formation and tuning production 233 2001
6739394 Production of synthesis gas from a hydrocarbon containing formation 241 2001
6736215 In situ thermal processing of a hydrocarbon containing formation, in situ production of synthesis gas, and carbon dioxide sequestration 244 2001
6732794 In situ thermal processing of a hydrocarbon containing formation to produce a mixture with a selected hydrogen content 239 2001
6732795 In situ thermal processing of a hydrocarbon containing formation to pyrolyze a selected percentage of hydrocarbon material 198 2001
6732796 In situ production of synthesis gas from a hydrocarbon containing formation, the synthesis gas having a selected H2 to CO ratio 262 2001
6729395 In situ thermal processing of a hydrocarbon containing formation with a selected ratio of heat sources to production wells 249 2001
6729396 In situ thermal processing of a coal formation to produce hydrocarbons having a selected carbon number range 232 2001
6729397 In situ thermal processing of a hydrocarbon containing formation with a selected vitrinite reflectance 238 2001
6729401 In situ thermal processing of a hydrocarbon containing formation and ammonia production 238 2001
6725920 In situ thermal processing of a hydrocarbon containing formation to convert a selected amount of total organic carbon into hydrocarbon products 239 2001
6725921 In situ thermal processing of a coal formation by controlling a pressure of the formation 160 2001
6725928 In situ thermal processing of a coal formation using a distributed combustor 234 2001
6722429 In situ thermal processing of a hydrocarbon containing formation leaving one or more selected unprocessed areas 261 2001
6722430 In situ thermal processing of a coal formation with a selected oxygen content and/or selected O/C ratio 234 2001
6722431 In situ thermal processing of hydrocarbons within a relatively permeable formation 264 2001
6719047 In situ thermal processing of a hydrocarbon containing formation in a hydrogen-rich environment 247 2001
6715546 In situ production of synthesis gas from a hydrocarbon containing formation through a heat source wellbore 263 2001
6715547 In situ thermal processing of a hydrocarbon containing formation to form a substantially uniform, high permeability formation 238 2001
6715548 In situ thermal processing of a hydrocarbon containing formation to produce nitrogen containing formation fluids 238 2001
6715549 In situ thermal processing of a hydrocarbon containing formation with a selected atomic oxygen to carbon ratio 194 2001
6712135 In situ thermal processing of a coal formation in reducing environment 234 2001
6712136 In situ thermal processing of a hydrocarbon containing formation using a selected production well spacing 297 2001
6712137 In situ thermal processing of a coal formation to pyrolyze a selected percentage of hydrocarbon material 233 2001
6708758 In situ thermal processing of a coal formation leaving one or more selected unprocessed areas 238 2001
6702016 In situ thermal processing of a hydrocarbon containing formation with heat sources located at an edge of a formation layer 252 2001
6698515 In situ thermal processing of a coal formation using a relatively slow heating rate 236 2001
6688387 In situ thermal processing of a hydrocarbon containing formation to produce a hydrocarbon condensate 270 2001
6609570 In situ thermal processing of a coal formation and ammonia production 235 2001
6607033 In Situ thermal processing of a coal formation to produce a condensate 235 2001
6591906 In situ thermal processing of a hydrocarbon containing formation with a selected oxygen content 270 2001
6591907 In situ thermal processing of a coal formation with a selected vitrinite reflectance 239 2001
6588504 In situ thermal processing of a coal formation to produce nitrogen and/or sulfur containing formation fluids 247 2001
6581684 In Situ thermal processing of a hydrocarbon containing formation to produce sulfur containing formation fluids 288 2001
* 2002/0076,212 In situ thermal processing of a hydrocarbon containing formation producing a mixture with oxygenated hydrocarbons 233 2001
* 2002/0049,360 In situ thermal processing of a hydrocarbon containing formation to produce a mixture including ammonia 132 2001
* 2002/0040,778 In situ thermal processing of a hydrocarbon containing formation with a selected hydrogen content 12 2001
* 2002/0027,001 In situ thermal processing of a coal formation to produce a selected gas mixture 223 2001
7096942 In situ thermal processing of a relatively permeable formation while controlling pressure 238 2002
7055600 In situ thermal recovery from a relatively permeable formation with controlled production rate 215 2002
7051807 In situ thermal recovery from a relatively permeable formation with quality control 146 2002
7051811 In situ thermal processing through an open wellbore in an oil shale formation 88 2002
7040398 In situ thermal processing of a relatively permeable formation in a reducing environment 177 2002
7040399 In situ thermal processing of an oil shale formation using a controlled heating rate 202 2002
7040400 In situ thermal processing of a relatively impermeable formation using an open wellbore 224 2002
7032660 In situ thermal processing and inhibiting migration of fluids into or out of an in situ oil shale formation 214 2002
7013972 In situ thermal processing of an oil shale formation using a natural distributed combustor 65 2002
7004247 Conductor-in-conduit heat sources for in situ thermal processing of an oil shale formation 228 2002
7004251 In situ thermal processing and remediation of an oil shale formation 232 2002
6997518 In situ thermal processing and solution mining of an oil shale formation 218 2002
6994169 In situ thermal processing of an oil shale formation with a selected property 198 2002
6991032 In situ thermal processing of an oil shale formation using a pattern of heat sources 210 2002
6991033 In situ thermal processing while controlling pressure in an oil shale formation 130 2002
6991036 Thermal processing of a relatively permeable formation 101 2002
6981548 In situ thermal recovery from a relatively permeable formation 186 2002
6966374 In situ thermal recovery from a relatively permeable formation using gas to increase mobility 187 2002
6964300 In situ thermal recovery from a relatively permeable formation with backproduction through a heater wellbore 226 2002
6951247 In situ thermal processing of an oil shale formation using horizontal heat sources 235 2002
6948562 Production of a blending agent using an in situ thermal process in a relatively permeable formation 220 2002
6929067 Heat sources with conductive material for in situ thermal processing of an oil shale formation 216 2002
6923257 In situ thermal processing of an oil shale formation to produce a condensate 218 2002
6918442 In situ thermal processing of an oil shale formation in a reducing environment 196 2002
6918443 In situ thermal processing of an oil shale formation to produce hydrocarbons having a selected carbon number range 207 2002
6915850 In situ thermal processing of an oil shale formation having permeable and impermeable sections 197 2002
6880633 In situ thermal processing of an oil shale formation to produce a desired product 244 2002
6877555 In situ thermal processing of an oil shale formation while inhibiting coking 227 2002
* 2003/0173,080 In situ thermal processing of an oil shale formation using a pattern of heat sources 17 2002
7165615 In situ recovery from a hydrocarbon containing formation using conductor-in-conduit heat sources with an electrically conductive material in the overburden 212 2002
7156176 Installation and use of removable heaters in a hydrocarbon containing formation 185 2002
7128153 Treatment of a hydrocarbon containing formation after heating 190 2002
7114566 In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor 230 2002
7104319 In situ thermal processing of a heavy oil diatomite formation 225 2002
7100994 Producing hydrocarbons and non-hydrocarbon containing materials when treating a hydrocarbon containing formation 219 2002
7090013 In situ thermal processing of a hydrocarbon containing formation to produce heated fluids 229 2002
7086465 In situ production of a blending agent from a hydrocarbon containing formation 191 2002
7077198 In situ recovery from a hydrocarbon containing formation using barriers 242 2002
7077199 In situ thermal processing of an oil reservoir formation 235 2002
7066254 In situ thermal processing of a tar sands formation 251 2002
7066257 In situ recovery from lean and rich zones in a hydrocarbon containing formation 186 2002
7063145 Methods and systems for heating a hydrocarbon containing formation in situ with an opening contacting the earth's surface at two locations 214 2002
7051808 Seismic monitoring of in situ conversion in a hydrocarbon containing formation 126 2002
7011154 In situ recovery from a kerogen and liquid hydrocarbon containing formation 242 2002
6991045 Forming openings in a hydrocarbon containing formation using magnetic tracking 190 2002
6969123 Upgrading and mining of coal 239 2002
6932155 In situ thermal processing of a hydrocarbon containing formation via backproducing through a heater well 242 2002
6856132 Method and apparatus for subterranean formation flow imaging 47 2002
6923258 In situ thermal processsing of a hydrocarbon containing formation to produce a mixture with a selected hydrogen content 203 2003
8238730 High voltage temperature limited heaters 47 2003
8224164 Insulated conductor temperature limited heaters 46 2003
8224163 Variable frequency temperature limited heaters 0 2003
7219734 Inhibiting wellbore deformation during in situ thermal processing of a hydrocarbon containing formation 203 2003
7121341 Conductor-in-conduit temperature limited heaters 188 2003
7073578 Staged and/or patterned heating during in situ thermal processing of a hydrocarbon containing formation 241 2003
7121342 Thermal processes for subsurface formations 281 2004
8355623 Temperature limited heaters with high power factors 42 2005
7510000 Reducing viscosity of oil for production from a hydrocarbon containing formation 144 2005
7490665 Variable frequency temperature limited heaters 138 2005
7481274 Temperature limited heaters with relatively constant current 131 2005
7431076 Temperature limited heaters using modulated DC power 144 2005
7424915 Vacuum pumping of conductor-in-conduit heaters 142 2005
7383877 Temperature limited heaters with thermally conductive fluid used to heat subsurface formations 137 2005
7370704 Triaxial temperature limited heater 144 2005
7357180 Inhibiting effects of sloughing in wellbores 159 2005
7353872 Start-up of temperature limited heaters using direct current (DC) 141 2005
7320364 Inhibiting reflux in a heated well of an in situ conversion system 133 2005
7225866 In situ thermal processing of an oil shale formation using a pattern of heat sources 203 2006
8224165 Temperature limited heater utilizing non-ferromagnetic conductor 49 2006
8070840 Treatment of gas from an in situ conversion process 48 2006
8027571 In situ conversion process systems utilizing wellbores in at least two regions of a formation 74 2006
7986869 Varying properties along lengths of temperature limited heaters 76 2006
7942197 Methods and systems for producing fluid from an in situ conversion process 75 2006
7860377 Subsurface connection methods for subsurface heaters 114 2006
7831134 Grouped exposed metal heaters 94 2006
7575052 In situ conversion process utilizing a closed loop heating system 133 2006
7575053 Low temperature monitoring system for subsurface barriers 131 2006
7546873 Low temperature barriers for use with in situ processes 117 2006
7527094 Double barrier system for an in situ conversion process 159 2006
7500528 Low temperature barrier wellbores formed using water flushing 143 2006
7435037 Low temperature barriers with heat interceptor wells for in situ processes 154 2006
7360588 Thermal processes for subsurface formations 136 2006
8606091 Subsurface heaters with low sulfidation rates 13 2006
7635025 Cogeneration systems and processes for treating hydrocarbon containing formations 141 2006
7591310 Methods of hydrotreating a liquid stream to remove clogging compounds 154 2006
7584789 Methods of cracking a crude product to produce additional crude products 162 2006
7581589 Methods of producing alkylated hydrocarbons from an in situ heat treatment process liquid 156 2006
7562706 Systems and methods for producing hydrocarbons from tar sands formations 162 2006
7559367 Temperature limited heater with a conduit substantially electrically isolated from the formation 163 2006
7559368 Solution mining systems and methods for treating hydrocarbon containing formations 166 2006
7556095 Solution mining dawsonite from hydrocarbon containing formations with a chelating agent 182 2006
7556096 Varying heating in dawsonite zones in hydrocarbon containing formations 173 2006
7549470 Solution mining and heating by oxidation for treating hydrocarbon containing formations 192 2006
7461691 In situ recovery from a hydrocarbon containing formation 190 2007
8083813 Methods of producing transportation fuel 53 2007
7912358 Alternate energy source usage for in situ heat treatment processes 74 2007
7866385 Power systems utilizing the heat of produced formation fluid 98 2007
7793722 Non-ferromagnetic overburden casing 92 2007
7785427 High strength alloys 95 2007
7683296 Adjusting alloy compositions for selected properties in temperature limited heaters 109 2007
7673786 Welding shield for coupling heaters 110 2007
7635023 Time sequenced heating of multiple layers in a hydrocarbon containing formation 181 2007
7631689 Sulfur barrier for use with in situ processes for treating formations 146 2007
7610962 Sour gas injection for use with in situ heat treatment 133 2007
7604052 Compositions produced using an in situ heat treatment process 161 2007
7533719 Wellhead with non-ferromagnetic materials 166 2007
* 2007/0289,733 Wellhead with non-ferromagnetic materials 76 2007
7798221 In situ recovery from a hydrocarbon containing formation 121 2007
7735935 In situ thermal processing of an oil shale formation containing carbonate minerals 117 2007
7845411 In situ heat treatment process utilizing a closed loop heating system 114 2007
7841401 Gas injection to inhibit migration during an in situ heat treatment process 95 2007
7730946 Treating tar sands formations with dolomite 102 2007
7730945 Using geothermal energy to heat a portion of a formation for an in situ heat treatment process 105 2007
7730947 Creating fluid injectivity in tar sands formations 107 2007
7717171 Moving hydrocarbons through portions of tar sands formations with a fluid 107 2007
7703513 Wax barrier for use with in situ processes for treating formations 117 2007
7681647 Method of producing drive fluid in situ in tar sands formations 122 2007
7677310 Creating and maintaining a gas cap in tar sands formations 102 2007
7677314 Method of condensing vaporized water in situ to treat tar sands formations 98 2007
7673681 Treating tar sands formations with karsted zones 104 2007
7644765 Heating tar sands formations while controlling pressure 111 2007
7635024 Heating tar sands formations to visbreaking temperatures 144 2007
7631690 Heating hydrocarbon containing formations in a spiral startup staged sequence 154 2007
7562707 Heating hydrocarbon containing formations in a line drive staged process 173 2007
7540324 Heating hydrocarbon containing formations in a checkerboard pattern staged process 173 2007
* 2008/0283,246 Heating tar sands formations to visbreaking temperatures 91 2007
7640980 Thermal processes for subsurface formations 109 2008
9181780 Controlling and assessing pressure conditions during treatment of tar sands formations 0 2008
8791396 Floating insulated conductors for heating subsurface formations 4 2008
8662175 Varying properties of in situ heat treatment of a tar sands formation based on assessed viscosities 21 2008
8459359 Treating nahcolite containing formations and saline zones 34 2008
8381815 Production from multiple zones of a tar sands formation 46 2008
8327681 Wellbore manufacturing processes for in situ heat treatment processes 23 2008
8042610 Parallel heater system for subsurface formations 72 2008
7950453 Downhole burner systems and methods for heating subsurface formations 93 2008
7931086 Heating systems for heating subsurface formations 92 2008
7849922 In situ recovery from residually heated sections in a hydrocarbon containing formation 106 2008
7841408 In situ heat treatment from multiple layers of a tar sands formation 108 2008
7841425 Drilling subsurface wellbores with cutting structures 102 2008
7832484 Molten salt as a heat transfer fluid for heating a subsurface formation 100 2008
7798220 In situ heat treatment of a tar sands formation after drive process treatment 102 2008
* 2009/0321,071 CONTROLLING AND ASSESSING PRESSURE CONDITIONS DURING TREATMENT OF TAR SANDS FORMATIONS 4 2008
8536497 Methods for forming long subsurface heaters 18 2008
8276661 Heating subsurface formations by oxidizing fuel on a fuel carrier 46 2008
8272455 Methods for forming wellbores in heated formations 18 2008
8240774 Solution mining and in situ treatment of nahcolite beds 44 2008
8196658 Irregular spacing of heat sources for treating hydrocarbon containing formations 58 2008
8162059 Induction heaters used to heat subsurface formations 61 2008
8146661 Cryogenic treatment of gas 59 2008
8146669 Multi-step heater deployment in a subsurface formation 54 2008
8113272 Three-phase heaters with common overburden sections for heating subsurface formations 37 2008
8011451 Ranging methods for developing wellbores in subsurface formations 59 2008
7866386 In situ oxidation of subsurface formations 108 2008
7866388 High temperature methods for forming oxidizer fuel 93 2008
8627887 In situ recovery from a hydrocarbon containing formation 22 2008
8752904 Heated fluid flow in mines and tunnels used in heating subsurface hydrocarbon containing formations 0 2009
8177305 Heater connections in mines and tunnels for use in treating subsurface hydrocarbon containing formations 59 2009
8172335 Electrical current flow between tunnels for use in heating subsurface hydrocarbon containing formations 50 2009
8162405 Using tunnels for treating subsurface hydrocarbon containing formations 50 2009
8151907 Dual motor systems and non-rotating sensors for use in developing wellbores in subsurface formations 55 2009
9129728 Systems and methods of forming subsurface wellbores 0 2009
9051829 Perforated electrical conductors for treating subsurface formations 0 2009
9022118 Double insulated heaters for treating subsurface formations 0 2009
8881806 Systems and methods for treating a subsurface formation with electrical conductors 4 2009
8353347 Deployment of insulated conductors for treating subsurface formations 23 2009
8281861 Circulated heated transfer fluid heating of subsurface hydrocarbon formations 46 2009
8267170 Offset barrier wells in subsurface formations 36 2009
8267185 Circulated heated transfer fluid systems used to treat a subsurface formation 44 2009
8261832 Heating subsurface formations with fluids 52 2009
8256512 Movable heaters for treating subsurface hydrocarbon containing formations 32 2009
8220539 Controlling hydrogen pressure in self-regulating nuclear reactors used to treat a subsurface formation 66 2009
8636323 Mines and tunnels for use in treating subsurface hydrocarbon containing formations 20 2009
8562078 Hydrocarbon production from mines and tunnels used in treating subsurface hydrocarbon containing formations 20 2009
7942203 Thermal processes for subsurface formations 93 2010
* 2010/0181,066 THERMAL PROCESSES FOR SUBSURFACE FORMATIONS 2 2010
8851170 Heater assisted fluid treatment of a subsurface formation 1 2010
8448707 Non-conducting heater casings 0 2010
8434555 Irregular pattern treatment of a subsurface formation 32 2010
8327932 Recovering energy from a subsurface formation 40 2010
8192682 High strength alloys 43 2010
8225866 In situ recovery from a hydrocarbon containing formation 46 2010
8233782 Grouped exposed metal heaters 36 2010
8151880 Methods of making transportation fuel 54 2010
9127523 Barrier methods for use in subsurface hydrocarbon formations 1 2011
9127538 Methodologies for treatment of hydrocarbon formations using staged pyrolyzation 0 2011
9033042 Forming bitumen barriers in subsurface hydrocarbon formations 0 2011
8833453 Electrodes for electrical current flow heating of subsurface formations with tapered copper thickness 0 2011
8820406 Electrodes for electrical current flow heating of subsurface formations with conductive material in wellbore 0 2011
8739874 Methods for heating with slots in hydrocarbon formations 0 2011
8701768 Methods for treating hydrocarbon formations 8 2011
8701769 Methods for treating hydrocarbon formations based on geology 8 2011
8631866 Leak detection in circulated fluid systems for heating subsurface formations 18 2011
8230927 Methods and systems for producing fluid from an in situ conversion process 36 2011
8579031 Thermal processes for subsurface formations 0 2011
9016370 Partial solution mining of hydrocarbon containing layers prior to in situ heat treatment 0 2012
8555971 Treating tar sands formations with dolomite 18 2012
8485252 In situ recovery from a hydrocarbon containing formation 35 2012
9309755 Thermal expansion accommodation for circulated fluid systems used to heat subsurface formations 0 2012
8857506 Alternate energy source usage methods for in situ heat treatment processes 1 2013
8789586 In situ recovery from a hydrocarbon containing formation 1 2013
9022109 Leak detection in circulated fluid systems for heating subsurface formations 1 2014
9528322 Dual motor systems and non-rotating sensors for use in developing wellbores in subsurface formations 0 2014
9399905 Leak detection in circulated fluid systems for heating subsurface formations 0 2015
 
BAKER HUGHES INCORPORATED (16)
* 6686738 Method for determining decay characteristics of multi-component downhole decay data 4 2002
7298142 Method and apparatus for reservoir fluid characterization in nuclear magnetic resonance logging 8 2005
* 2006/0290,350 Method and apparatus for reservoir fluid characterization in nuclear magnetic resonance logging 4 2005
7502692 Method and computer program product for estimating true intrinsic relaxation time and internal gradient from multigradient NMR logging 2 2006
* 2007/0244,648 METHOD AND COMPUTER PROGRAM PRODUCT FOR ESTIMATING TRUE INTRINSIC RELAXATION TIME AND INTERNAL GRADIENT FROM MULTIGRADIENT NMR LOGGING 3 2006
7705592 Two dimensional T1/T2APP-T2APP processing of multi-gradient NMR data 0 2008
* 2009/0198,446 TWO DIMENSIONAL T1/T2APP-T2APP PROCESSING OF MULTI-GRADIENT NMR DATA 1 2008
7808238 Echo-decay-acceleration data acquisition method for gas identification using a low-field gradient 2 2008
* 2009/0210,159 Echo-Decay-Acceleration Data Acquisition Method for Gas Identification Using a Low-Field Gradient 1 2008
8131469 Data acquisition and processing for invasion profile and gas zone analysis with NMR dual or multiple interecho spacing time logs 2 2008
* 2010/0088,033 DATA ACQUISITION AND PROCESSING FOR INVASION PROFILE AND GAS ZONE ANALYSIS WITH NMR DUAL OR MULTIPLE INTERECHO SPACING TIME LOGS 0 2008
* 2009/0066,327 METHOD AND COMPUTER PROGRAM PRODUCT FOR ESTIMATING TRUE INTRINSIC RELAXATION TIME AND INTERNAL GRADIENT FROM MULTIGRADIENT NMR LOGGING 0 2008
8248067 Apparatus and methods for estimating downhole fluid compositions 2 2009
* 2009/0157,315 Apparatus And Methods For Estimating Downhole Fluid Compositions 3 2009
* 8185315 Determination of irreducible water cut-off using two dimensional nuclear magnetic resonance data 0 2011
* 2011/0153,216 DETERMINATION OF IRREDUCIBLE WATER CUT-OFF USING TWO DIMENSIONAL NUCLEAR MAGNETIC RESONANCE DATA 1 2011
 
The United States of America as represented by the United States Department of Energy (1)
7597147 Temperature limited heaters using phase transformation of ferromagnetic material 155 2007
 
SCHLUMBERGER TECHNOLOGY CORPORATION (5)
* 5680043 Nuclear magnetic resonance technique for determining gas effect with borehole logging tools 59 1995
* 5796252 Nuclear magnetic resonance borehole logging apparatus and method for ascertaining a volume of hydrocarbons independent of a diffusion coefficient 89 1997
* 6147489 Method and apparatus for measuring total nuclear magnetic resonance porosity 9 1997
7075297 Combining NMR, density, and dielectric measurements for determining downhole reservoir fluid volumes 4 2002
* 2004/0032,257 Combining NMR, density, and dielectric measurements for determining downhole reservoir fluid volumes 4 2002
 
GENIE IP B.V. (1)
9605524 Heater pattern for in situ thermal processing of a subsurface hydrocarbon containing formation 0 2012
 
MULTI-CHEM GROUP, LLC (1)
* 9488586 Determining treatment fluid composition using a mini-reservoir device 0 2014
* Cited By Examiner