Inventor

Harold J. Vinegar

Inventor

Houston, TX, US

Overview

1982–2021

Patent span

General tagging of new technological developments

Primary field (CPC Y)

Patents· 301 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

E21Bprimary

E21BEarth or rock drilling27%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%

C09KMaterials for miscellaneous applications, not provided for elsewhere10%

Y02CCapture, storage, sequestration or disposal of greenhouse gases [ghg]10%

Y02PClimate change mitigation technologies in the production or processing of goods10%

Y10TTechnical subjects covered by former us classification5%

C10GCracking hydrocarbon oils5%

G01VGeophysics4%

B09CReclamation of contaminated soil4%

H05BElectric heating4%

PatentTitleYear

11,099,292Method for determining the composition of natural gas liquids, mean pore-size and tortuosity in a subsurface formation using NMR2021 10,444,395Tunnel detection using a pipeline pig2019 10,047,594Heater pattern for in situ thermal processing of a subsurface hydrocarbon containing formation2018 9,784,882'Mapping hydrocarbon liquid properties of a kerogencontaining source rock'2017 9,605,524'Heater pattern for in situ thermal processing of a subsurface hydrocarbon containing formation'2017 9,051,829'Perforated electrical conductors for treating subsurface formations'2015 8,881,806'Systems and methods for treating a subsurface formation with electrical conductors'2014 8,789,586'In situ recovery from a hydrocarbon containing formation'2014 8,662,175'Varying properties of in situ heat treatment of a tar sands formation based on assessed viscosities'2014 8,627,887'In situ recovery from a hydrocarbon containing formation'2014 8,608,249'In situ thermal processing of an oil shale formation'2013 8,606,091'Subsurface heaters with low sulfidation rates'2013 8,579,031'Thermal processes for subsurface formations'2013 8,555,971'Treating tar sands formations with dolomite'2013 8,485,252'In situ recovery from a hydrocarbon containing formation'2013 8,459,359'Treating nahcolite containing formations and saline zones'2013 8,381,815'Production from multiple zones of a tar sands formation'2013 8,355,623'Temperature limited heaters with high power factors'2013 8,276,661'Heating subsurface formations by oxidizing fuel on a fuel carrier'2012 8,240,774'Solution mining and in situ treatment of nahcolite beds'2012 8,238,730'High voltage temperature limited heaters'2012 8,233,782'Grouped exposed metal heaters'2012 8,225,866'In situ recovery from a hydrocarbon containing formation'2012 8,224,163'Variable frequency temperature limited heaters'2012 8,224,165'Temperature limited heater utilizing non-ferromagnetic conductor'2012 8,220,539'Controlling hydrogen pressure in self-regulating nuclear reactors used to treat a subsurface formation'2012 8,224,164'Insulated conductor temperature limited heaters'2012 8,200,072'Temperature limited heaters for heating subsurface formations or wellbores'2012 8,192,682'High strength alloys'2012 8,146,661'Cryogenic treatment of gas'2012 8,113,272'Three-phase heaters with common overburden sections for heating subsurface formations'2012 8,027,571'In situ conversion process systems utilizing wellbores in at least two regions of a formation'2011 7,986,869'Varying properties along lengths of temperature limited heaters'2011 7,942,203'Thermal processes for subsurface formations'2011 7,931,086'Heating systems for heating subsurface formations'2011 7,860,377'Subsurface connection methods for subsurface heaters'2010 7,849,922'In situ recovery from residually heated sections in a hydrocarbon containing formation'2010 7,845,411'In situ heat treatment process utilizing a closed loop heating system'2010 7,841,401'Gas injection to inhibit migration during an in situ heat treatment process'2010 7,841,408'In situ heat treatment from multiple layers of a tar sands formation'2010 7,832,484'Molten salt as a heat transfer fluid for heating a subsurface formation'2010 7,831,134'Grouped exposed metal heaters'2010 7,831,133'Insulated conductor temperature limited heater for subsurface heating coupled in a three-phase WYE configuration'2010 7,798,220'In situ heat treatment of a tar sands formation after drive process treatment'2010 7,798,221'In situ recovery from a hydrocarbon containing formation'2010 7,793,722'Non-ferromagnetic overburden casing'2010 7,785,427'High strength alloys'2010 7,735,935'In situ thermal processing of an oil shale formation containing carbonate minerals'2010 7,730,946'Treating tar sands formations with dolomite'2010 7,717,171'Moving hydrocarbons through portions of tar sands formations with a fluid'2010 7,703,513'Wax barrier for use with in situ processes for treating formations'2010 7,681,647'Method of producing drive fluid in situ in tar sands formations'2010 7,677,310'Creating and maintaining a gas cap in tar sands formations'2010 7,673,681'Treating tar sands formations with karsted zones'2010 7,640,980'Thermal processes for subsurface formations'2010 7,635,025'Cogeneration systems and processes for treating hydrocarbon containing formations'2009 7,635,023'Time sequenced heating of multiple layers in a hydrocarbon containing formation'2009 7,631,690'Heating hydrocarbon containing formations in a spiral startup staged sequence'2009 7,631,689'Sulfur barrier for use with in situ processes for treating formations'2009 7,575,053'Low temperature monitoring system for subsurface barriers'2009 7,575,052'In situ conversion process utilizing a closed loop heating system'2009 7,559,368'Solution mining systems and methods for treating hydrocarbon containing formations'2009 7,559,367'Temperature limited heater with a conduit substantially electrically isolated from the formation'2009 7,556,095'Solution mining dawsonite from hydrocarbon containing formations with a chelating agent'2009 7,556,096'Varying heating in dawsonite zones in hydrocarbon containing formations'2009 7,549,470'Solution mining and heating by oxidation for treating hydrocarbon containing formations'2009 7,546,873'Low temperature barriers for use with in situ processes'2009 7,534,926'Soil remediation using heated vapors'2009 7,533,719'Wellhead with non-ferromagnetic materials'2009 7,527,094'Double barrier system for an in situ conversion process'2009 7,510,000'Reducing viscosity of oil for production from a hydrocarbon containing formation'2009 7,490,665'Variable frequency temperature limited heaters'2009 7,481,274'Temperature limited heaters with relatively constant current'2009 7,461,691'In situ recovery from a hydrocarbon containing formation'2008 7,431,076'Temperature limited heaters using modulated DC power'2008 7,424,915'Vacuum pumping of conductor-in-conduit heaters'2008 7,383,877'Temperature limited heaters with thermally conductive fluid used to heat subsurface formations'2008 7,360,588'Thermal processes for subsurface formations'2008 7,357,180'Inhibiting effects of sloughing in wellbores'2008 7,322,410'Controllable production well packer'2008 7,259,688'Wireless reservoir production control'2007 7,225,866'In situ thermal processing of an oil shale formation using a pattern of heat sources'2007 7,219,734'Inhibiting wellbore deformation during in situ thermal processing of a hydrocarbon containing formation'2007 7,170,424'Oil well casting electrical power pick-off points'2007 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'2007 7,156,176'Installation and use of removable heaters in a hydrocarbon containing formation'2007 7,147,059'Use of downhole high pressure gas in a gas-lift well and associated methods'2006 7,128,153'Treatment of a hydrocarbon containing formation after heating'2006 7,121,341'Conductor-in-conduit temperature limited heaters'2006 7,121,342'Thermal processes for subsurface formations'2006 7,114,566'In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor'2006 7,114,561'Wireless communication using well casing'2006 7,104,319'In situ thermal processing of a heavy oil diatomite formation'2006 7,100,994'Producing hydrocarbons and non-hydrocarbon containing materials when treating a hydrocarbon containing formation'2006 7,096,942'In situ thermal processing of a relatively permeable formation while controlling pressure'2006 7,096,953'In situ thermal processing of a coal formation using a movable heating element'2006 7,096,941'In situ thermal processing of a coal formation with heat sources located at an edge of a coal layer'2006 7,086,465'In situ production of a blending agent from a hydrocarbon containing formation'2006 7,086,468'In situ thermal processing of a hydrocarbon containing formation using heat sources positioned within open wellbores'2006 7,077,198'In situ recovery from a hydrocarbon containing formation using barriers'2006 7,077,199'In situ thermal processing of an oil reservoir formation'2006 7,075,454'Power generation using batteries with reconfigurable discharge'2006 7,073,578'Staged and/or patterned heating during in situ thermal processing of a hydrocarbon containing formation'2006 7,073,594'Wireless downhole well interval inflow and injection control'2006 7,066,257'In situ recovery from lean and rich zones in a hydrocarbon containing formation'2006 7,066,254'In situ thermal processing of a tar sands formation'2006 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'2006 7,055,600'In situ thermal recovery from a relatively permeable formation with controlled production rate'2006 7,055,592'Toroidal choke inductor for wireless communication and control'2006 7,051,808'Seismic monitoring of in situ conversion in a hydrocarbon containing formation'2006 7,051,811'In situ thermal processing through an open wellbore in an oil shale formation'2006 7,051,807'In situ thermal recovery from a relatively permeable formation with quality control'2006 7,040,400'In situ thermal processing of a relatively impermeable formation using an open wellbore'2006 7,040,399'In situ thermal processing of an oil shale formation using a controlled heating rate'2006 7,040,397'Thermal processing of an oil shale formation to increase permeability of the formation'2006 7,040,398'In situ thermal processing of a relatively permeable formation in a reducing environment'2006 7,036,583'In situ thermal processing of a hydrocarbon containing formation to increase a porosity of the formation'2006 7,032,660'In situ thermal processing and inhibiting migration of fluids into or out of an in situ oil shale formation'2006 7,017,661'Production of synthesis gas from a coal formation'2006 7,013,972'In situ thermal processing of an oil shale formation using a natural distributed combustor'2006 7,011,154'In situ recovery from a kerogen and liquid hydrocarbon containing formation'2006 7,004,247'Conductor-in-conduit heat sources for in situ thermal processing of an oil shale formation'2006 7,004,251'In situ thermal processing and remediation of an oil shale formation'2006 7,004,678'Soil remediation with heated soil'2006 6,997,518'In situ thermal processing and solution mining of an oil shale formation'2006 6,997,255'In situ thermal processing of a hydrocarbon containing formation in a reducing environment'2006 6,994,169'In situ thermal processing of an oil shale formation with a selected property'2006 6,994,168'In situ thermal processing of a hydrocarbon containing formation with a selected hydrogen to carbon ratio'2006 6,994,160'In situ thermal processing of a hydrocarbon containing formation to produce hydrocarbons having a selected carbon number range'2006 6,994,161'In situ thermal processing of a coal formation with a selected moisture content'2006 6,991,031'In situ thermal processing of a coal formation to convert a selected total organic carbon content into hydrocarbon products'2006 6,991,036'Thermal processing of a relatively permeable formation'2006 6,991,033'In situ thermal processing while controlling pressure in an oil shale formation'2006 6,991,045'Forming openings in a hydrocarbon containing formation using magnetic tracking'2006 6,991,032'In situ thermal processing of an oil shale formation using a pattern of heat sources'2006 6,981,553'Controlled downhole chemical injection'2006 6,981,548'In situ thermal recovery from a relatively permeable formation'2006 6,973,967'Situ thermal processing of a coal formation using pressure and/or temperature control'2005 6,969,123'Upgrading and mining of coal'2005 6,966,374'In situ thermal recovery from a relatively permeable formation using gas to increase mobility'2005 6,966,372'In situ thermal processing of a hydrocarbon containing formation to produce oxygen containing formation fluids'2005 6,964,300'In situ thermal recovery from a relatively permeable formation with backproduction through a heater wellbore'2005 6,962,466'Soil remediation of mercury contamination'2005 6,959,761'In situ thermal processing of a coal formation with a selected ratio of heat sources to production wells'2005 6,958,704'Permanent downhole, wireless, two-way telemetry backbone using redundant repeaters'2005 6,953,087'Thermal processing of a hydrocarbon containing formation to increase a permeability of the formation'2005 6,951,436'Thermally enhanced soil decontamination method'2005 6,951,247'In situ thermal processing of an oil shale formation using horizontal heat sources'2005 6,948,563'In situ thermal processing of a hydrocarbon containing formation with a selected hydrogen content'2005 6,948,562'Production of a blending agent using an in situ thermal process in a relatively permeable formation'2005 6,932,155'In situ thermal processing of a hydrocarbon containing formation via backproducing through a heater well'2005 6,929,067'Heat sources with conductive material for in situ thermal processing of an oil shale formation'2005 6,923,257'In situ thermal processing of an oil shale formation to produce a condensate'2005 6,923,258'In situ thermal processsing of a hydrocarbon containing formation to produce a mixture with a selected hydrogen content'2005 6,918,442'In situ thermal processing of an oil shale formation in a reducing environment'2005 6,918,443'In situ thermal processing of an oil shale formation to produce hydrocarbons having a selected carbon number range'2005 6,915,850'In situ thermal processing of an oil shale formation having permeable and impermeable sections'2005 6,913,078'In Situ thermal processing of hydrocarbons within a relatively impermeable formation'2005 6,910,536'In situ thermal processing of a hydrocarbon containing formation using a natural distributed combustor'2005 6,902,003'In situ thermal processing of a hydrocarbon containing formation having a selected total organic carbon content'2005 6,902,004'In situ thermal processing of a hydrocarbon containing formation using a movable heating element'2005 6,896,053'In situ thermal processing of a hydrocarbon containing formation using repeating triangular patterns of heat sources'2005 6,889,769'In situ thermal processing of a hydrocarbon containing formation with a selected moisture content'2005 6,880,635'In situ production of synthesis gas from a coal formation, the synthesis gas having a selected H2 to CO ratio'2005 6,881,009'Remediation of soil piles using central equipment'2005 6,880,633'In situ thermal processing of an oil shale formation to produce a desired product'2005 6,877,555'In situ thermal processing of an oil shale formation while inhibiting coking'2005 6,877,554'In situ thermal processing of a hydrocarbon containing formation using pressure and/or temperature control'2005 6,871,707'In situ thermal processing of a hydrocarbon containing formation with carbon dioxide sequestration'2005 6,866,097'In situ thermal processing of a coal formation to increase a permeability/porosity of the formation'2005 6,868,040'Wireless power and communications cross-bar switch'2005 6,854,929'Isolation of soil with a low temperature barrier prior to conductive thermal treatment of the soil'2005 6,851,481'Electro-hydraulically pressurized downhole valve actuator and method of use'2005 6,840,316'Tracker injection in a production well'2005 6,824,328'Vapor collection and treatment of off-gas from an in-situ thermal desorption soil remediation'2004 6,820,688'In situ thermal processing of coal formation with a selected hydrogen content and/or selected H/C ratio'2004 6,805,195'In situ thermal processing of a hydrocarbon containing formation to produce hydrocarbon fluids and synthesis gas'2004 6,789,625'In situ thermal processing of a hydrocarbon containing formation using exposed metal heat sources'2004 6,782,947'In situ thermal processing of a relatively impermeable formation to increase permeability of the formation'2004 6,769,485'In situ production of synthesis gas from a coal formation through a heat source wellbore'2004 6,769,483'In situ thermal processing of a hydrocarbon containing formation using conductor in conduit heat sources'2004 6,763,886'In situ thermal processing of a coal formation with carbon dioxide sequestration'2004 6,761,216'In situ thermal processing of a coal formation to produce hydrocarbon fluids and synthesis gas'2004 6,758,277'System and method for fluid flow optimization'2004 6,758,268'In situ thermal processing of a hydrocarbon containing formation using a relatively slow heating rate'2004 6,752,210'In situ thermal processing of a coal formation using heat sources positioned within open wellbores'2004 6,749,021'In situ thermal processing of a coal formation using a controlled heating rate'2004 6,745,832'Situ thermal processing of a hydrocarbon containing formation to control product composition'2004 6,745,831'In situ thermal processing of a hydrocarbon containing formation by controlling a pressure of the formation'2004 6,745,837'In situ thermal processing of a hydrocarbon containing formation using a controlled heating rate'2004 6,742,593'In situ thermal processing of a hydrocarbon containing formation using heat transfer from a heat transfer fluid to heat the formation'2004 6,742,587'In situ thermal processing of a coal formation to form a substantially uniform, relatively high permeable formation'2004 6,742,589'In situ thermal processing of a coal formation using repeating triangular patterns of heat sources'2004 6,742,588'In situ thermal processing of a hydrocarbon containing formation to produce formation fluids having a relatively low olefin content'2004 6,739,393'In situ thermal processing of a coal formation and tuning production'2004 6,739,394'Production of synthesis gas from a hydrocarbon containing formation'2004 6,736,215'In situ thermal processing of a hydrocarbon containing formation, in situ production of synthesis gas, and carbon dioxide sequestration'2004 6,732,796'In situ production of synthesis gas from a hydrocarbon containing formation, the synthesis gas having a selected H2 to CO ratio'2004 6,732,795'In situ thermal processing of a hydrocarbon containing formation to pyrolyze a selected percentage of hydrocarbon material'2004 6,732,794'In situ thermal processing of a hydrocarbon containing formation to produce a mixture with a selected hydrogen content'2004 6,729,397'In situ thermal processing of a hydrocarbon containing formation with a selected vitrinite reflectance'2004 6,729,396'In situ thermal processing of a coal formation to produce hydrocarbons having a selected carbon number range'2004 6,729,395'In situ thermal processing of a hydrocarbon containing formation with a selected ratio of heat sources to production wells'2004 6,729,401'In situ thermal processing of a hydrocarbon containing formation and ammonia production'2004 6,725,921'In situ thermal processing of a coal formation by controlling a pressure of the formation'2004 6,725,920'In situ thermal processing of a hydrocarbon containing formation to convert a selected amount of total organic carbon into hydrocarbon products'2004 6,725,928'In situ thermal processing of a coal formation using a distributed combustor'2004 6,722,429'In situ thermal processing of a hydrocarbon containing formation leaving one or more selected unprocessed areas'2004 6,722,430'In situ thermal processing of a coal formation with a selected oxygen content and/or selected O/C ratio'2004 6,722,431'In situ thermal processing of hydrocarbons within a relatively permeable formation'2004 6,719,047'In situ thermal processing of a hydrocarbon containing formation in a hydrogen-rich environment'2004 6,715,548'In situ thermal processing of a hydrocarbon containing formation to produce nitrogen containing formation fluids'2004 6,715,547'In situ thermal processing of a hydrocarbon containing formation to form a substantially uniform, high permeability formation'2004 6,715,549'In situ thermal processing of a hydrocarbon containing formation with a selected atomic oxygen to carbon ratio'2004 6,715,550'Controllable gas-lift well and valve'2004 6,715,546'In situ production of synthesis gas from a hydrocarbon containing formation through a heat source wellbore'2004 6,712,136'In situ thermal processing of a hydrocarbon containing formation using a selected production well spacing'2004 6,712,137'In situ thermal processing of a coal formation to pyrolyze a selected percentage of hydrocarbon material'2004 6,712,135'In situ thermal processing of a coal formation in reducing environment'2004 6,708,758'In situ thermal processing of a coal formation leaving one or more selected unprocessed areas'2004 6,702,016'In situ thermal processing of a hydrocarbon containing formation with heat sources located at an edge of a formation layer'2004 6,698,515'In situ thermal processing of a coal formation using a relatively slow heating rate'2004 6,688,387'In situ thermal processing of a hydrocarbon containing formation to produce a hydrocarbon condensate'2004 6,679,332'Petroleum well having downhole sensors, communication and power'2004 6,662,875'Induction choke for power distribution in piping structure'2003 6,632,047'Heater element for use in an in situ thermal desorption soil remediation system'2003 6,633,164'Measuring focused through-casing resistivity using induction chokes and also using well casing as the formation contact electrodes'2003 6,633,236'Permanent downhole, wireless, two-way telemetry backbone using redundant repeaters'2003 6,609,570'In situ thermal processing of a coal formation and ammonia production'2003 6,607,033'In Situ thermal processing of a coal formation to produce a condensate'2003 6,591,906'In situ thermal processing of a hydrocarbon containing formation with a selected oxygen content'2003 6,591,907'In situ thermal processing of a coal formation with a selected vitrinite reflectance'2003 6,588,503'In Situ thermal processing of a coal formation to control product composition'2003 6,588,504'In situ thermal processing of a coal formation to produce nitrogen and/or sulfur containing formation fluids'2003 6,581,684'In Situ thermal processing of a hydrocarbon containing formation to produce sulfur containing formation fluids'2003 6,543,539'Perforated casing method and system'2003 6,540,018'Method and apparatus for heating a wellbore'2003 6,485,232'Low cost, self regulating heater for use in an in situ thermal desorption soil remediation system'2002 6,419,423'Method for remediating near-surface contaminated soil'2002 6,360,819'Electrical heater'2002 6,279,392'Method and system for distributed well monitoring'2001 6,269,876'Electrical heater'2001 6,269,882'Method for ignition of flameless combustor'2001 6,102,622'Remediation method'2000 6,094,048'NMR logging of natural gas reservoirs'2000 6,079,499'Heater well method and apparatus'2000 6,056,057'Heater well method and apparatus'2000 6,023,554'Electrical heater'2000 6,019,172'Flameless combustor'2000 5,997,214'Remediation method'1999 5,899,269'Flameless combustor'1999 5,862,858'Flameless combustor'1999 5,656,239'Method for recovering contaminants from soil utilizing electrical heating'1997 5,553,189'Radiant plate heater for treatment of contaminated surfaces'1996 5,498,960'NMR logging of natural gas in reservoirs'1996 5,497,087'NMR logging of natural gas reservoirs'1996 5,433,271'Heat injection process'1995 5,411,089'Heat injection process'1995 5,409,071'Method to cement a wellbore'1995 5,404,952'Heat injection process and apparatus'1995 5,392,854'Oil recovery process'1995 5,318,116'Vacuum method for removing soil contaminants utilizing thermal conduction heating'1994 5,306,640'Method for determining preselected properties of a crude oil'1994 5,297,626'Oil recovery process'1994 5,236,039'Balanced-line RF electrode system for use in RF ground heating to recover oil from oil shale'1993 5,229,583'Surface heating blanket for soil remediation'1993 5,226,961'High temperature wellbore cement slurry'1993 5,190,405'Vacuum method for removing soil contaminants utilizing thermal conduction heating'1993 5,060,726'Method and apparatus for producing tar sand deposits containing conductive layers having little or no vertical communication'1991 5,042,579'Method and apparatus for producing tar sand deposits containing conductive layers'1991 4,987,368'Nuclear magnetism logging tool using high-temperature superconducting squid detectors'1991 4,984,594'Vacuum method for removing soil contamination utilizing surface electrical heating'1991 RE033505'Scan room for magnetic resonance imager'1990 4,926,941'Method of producing tar sand deposits containing conductive layers'1990 4,893,504'Method for determining capillary pressure and relative permeability by imaging'1990 4,886,118'Conductively heating a subterranean oil shale to create permeability and subsequently produce oil'1989 4,884,455'Method for analysis of failure of material employing imaging'1989 4,866,983'Analytical methods and apparatus for measuring the oil content of sponge core'1989 4,856,341'Apparatus for analysis of failure of material'1989 4,827,761'Sample holder'1989 4,769,602'Determining multiphase saturations by NMR imaging of multiple nuclides'1988 4,769,606'Induced polarization method and apparatus for distinguishing dispersed and laminated clay in earth formations'1988 4,743,854'In-situ induced polarization method for determining formation permeability'1988 4,730,162'Time-domain induced polarization logging method and apparatus with gated amplification level'1988 4,728,892'NMR imaging of materials'1988 4,719,423'NMR imaging of materials for transport properties'1988 4,671,102'Method and apparatus for determining distribution of fluids'1987 4,663,711'Method of analyzing fluid saturation using computerized axial tomography'1987 4,658,215'Method for induced polarization logging'1987 4,651,099'Scan room for magnetic resonance imager'1987 4,644,283'In-situ method for determining pore size distribution, capillary pressure and permeability'1987 4,640,352'In-situ steam drive oil recovery process'1987 4,635,197'High resolution tomographic imaging method'1987 4,613,754'Tomographic calibration apparatus'1986 4,583,046'Apparatus for focused electrode induced polarization logging'1986 4,583,242'Apparatus for positioning a sample in a computerized axial tomographic scanner'1986 4,571,491'Method of imaging the atomic number of a sample'1986 4,542,648'Method of correlating a core sample with its original position in a borehole'1985 4,540,882'Method of determining drilling fluid invasion'1985 4,398,151'Method for correcting an electrical log for the presence of shale in a formation'1983

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982–2015Patents assigned to SHELL OIL CO (278)· patent assignee history

1982–2007Based in Houston, TX, US· patent location history

2000–2009Patents assigned to UNIV TEXAS (12)· patent assignee history

2005–2021Based in Bellaire, TX, US· patent location history

2006–2015Patents assigned to VINEGAR HAROLD J (27)· patent assignee history

2006–2015Patents assigned to KARANIKAS JOHN MICHAEL (7)· patent assignee history

2006Based in Belaire, TX, US· patent location history

2012–2015Patents assigned to HARRIS CHRISTOPHER KELVIN (8)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SHELL OIL CO	278	1982–2015
VINEGAR HAROLD Jself	27	2006–2015
UNIV TEXAS	12	2000–2009
HARRIS CHRISTOPHER KELVIN	8	2012–2015
KARANIKAS JOHN MICHAEL	7	2006–2015

Locations

Location	Patents	Span
Houston, Texas, US	195	1982–2007
Bellaire, Texas, US	105	2005–2021
Belaire, Texas, US	1	2006