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Patente citante Fecha de presentación Fecha de emisión Cesionario original Título
US39456793 Mar 197523 Mar 1976Shell Oil CompanySubterranean oil shale pyrolysis with permeating and consolidating steps
US41216623 Jun 197724 Oct 1978Water purification with fragmented oil shale
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US755936820 Oct 200614 Jul 2009Shell Oil CompanySolution mining systems and methods for treating hydrocarbon containing formations
US756270620 Oct 200621 Jul 2009Shell Oil CompanySystems and methods for producing hydrocarbons from tar sands formations
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US757505321 Abr 200618 Ago 2009Shell Oil CompanyLow temperature monitoring system for subsurface barriers
US758158920 Oct 20061 Sep 2009Shell Oil CompanyMethods of producing alkylated hydrocarbons from an in situ heat treatment process liquid
US758478920 Oct 20068 Sep 2009Shell Oil CompanyMethods of cracking a crude product to produce additional crude products
US759131020 Oct 200622 Sep 2009Shell Oil CompanyMethods of hydrotreating a liquid stream to remove clogging compounds
US759714720 Abr 20076 Oct 2009Shell Oil CompanyTemperature limited heaters using phase transformation of ferromagnetic material
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US761096220 Abr 20073 Nov 2009Shell Oil CompanySour gas injection for use with in situ heat treatment
US763168920 Abr 200715 Dic 2009Shell Oil CompanySulfur barrier for use with in situ processes for treating formations
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US763502320 Abr 200722 Dic 2009Shell Oil CompanyTime sequenced heating of multiple layers in a hydrocarbon containing formation
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US763502520 Oct 200622 Dic 2009Shell Oil CompanyCogeneration systems and processes for treating hydrocarbon containing formations
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US767731419 Oct 200716 Mar 2010Shell Oil CompanyMethod of condensing vaporized water in situ to treat tar sands formations
US768164719 Oct 200723 Mar 2010Shell Oil CompanyMethod of producing drive fluid in situ in tar sands formations
US768329620 Abr 200723 Mar 2010Shell Oil CompanyAdjusting alloy compositions for selected properties in temperature limited heaters
US770351319 Oct 200727 Abr 2010Shell Oil CompanyWax barrier for use with in situ processes for treating formations
US771717119 Oct 200718 May 2010Shell Oil CompanyMoving hydrocarbons through portions of tar sands formations with a fluid
US773094519 Oct 20078 Jun 2010Shell Oil CompanyUsing geothermal energy to heat a portion of a formation for an in situ heat treatment process
US773094619 Oct 20078 Jun 2010Shell Oil CompanyTreating tar sands formations with dolomite
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US778542720 Abr 200731 Ago 2010Shell Oil CompanyHigh strength alloys
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US783113321 Abr 20069 Nov 2010Shell Oil CompanyInsulated conductor temperature limited heater for subsurface heating coupled in a three-phase WYE configuration
US783113421 Abr 20069 Nov 2010Shell Oil CompanyGrouped exposed metal heaters
US783248418 Abr 200816 Nov 2010Shell Oil CompanyMolten salt as a heat transfer fluid for heating a subsurface formation
US784140119 Oct 200730 Nov 2010Shell Oil CompanyGas injection to inhibit migration during an in situ heat treatment process
US784140818 Abr 200830 Nov 2010Shell Oil CompanyIn situ heat treatment from multiple layers of a tar sands formation
US784142518 Abr 200830 Nov 2010Shell Oil CompanyDrilling subsurface wellbores with cutting structures
US784541119 Oct 20077 Dic 2010Shell Oil CompanyIn situ heat treatment process utilizing a closed loop heating system
US784992218 Abr 200814 Dic 2010Shell Oil CompanyIn situ recovery from residually heated sections in a hydrocarbon containing formation
US786037721 Abr 200628 Dic 2010Shell Oil CompanySubsurface connection methods for subsurface heaters
US786638520 Abr 200711 Ene 2011Shell Oil CompanyPower systems utilizing the heat of produced formation fluid
US786638613 Oct 200811 Ene 2011Shell Oil CompanyIn situ oxidation of subsurface formations
US786638813 Oct 200811 Ene 2011Shell Oil CompanyHigh temperature methods for forming oxidizer fuel
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US794219721 Abr 200617 May 2011Shell Oil CompanyMethods and systems for producing fluid from an in situ conversion process
US79422034 Ene 201017 May 2011Shell Oil CompanyThermal processes for subsurface formations
US795045318 Abr 200831 May 2011Shell Oil CompanyDownhole burner systems and methods for heating subsurface formations
US798686921 Abr 200626 Jul 2011Shell Oil CompanyVarying properties along lengths of temperature limited heaters
US801145113 Oct 20086 Sep 2011Shell Oil CompanyRanging methods for developing wellbores in subsurface formations
US802757121 Abr 200627 Sep 2011Shell Oil CompanyIn situ conversion process systems utilizing wellbores in at least two regions of a formation
US804261018 Abr 200825 Oct 2011Shell Oil CompanyParallel heater system for subsurface formations
US807084021 Abr 20066 Dic 2011Shell Oil CompanyTreatment of gas from an in situ conversion process
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US814666113 Oct 20083 Abr 2012Shell Oil CompanyCryogenic treatment of gas
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US816205913 Oct 200824 Abr 2012Shell Oil CompanyInduction heaters used to heat subsurface formations
US816240510 Abr 200924 Abr 2012Shell Oil CompanyUsing tunnels for treating subsurface hydrocarbon containing formations
US817233510 Abr 20098 May 2012Shell Oil CompanyElectrical current flow between tunnels for use in heating subsurface hydrocarbon containing formations
US817730510 Abr 200915 May 2012Shell Oil CompanyHeater connections in mines and tunnels for use in treating subsurface hydrocarbon containing formations
US819163028 Abr 20105 Jun 2012Shell Oil CompanyCreating fluid injectivity in tar sands formations
US819268226 Abr 20105 Jun 2012Shell Oil CompanyHigh strength alloys
US819665813 Oct 200812 Jun 2012Shell Oil CompanyIrregular spacing of heat sources for treating hydrocarbon containing formations
US820007224 Oct 200312 Jun 2012Shell Oil CompanyTemperature limited heaters for heating subsurface formations or wellbores
US82205399 Oct 200917 Jul 2012Shell Oil CompanyControlling hydrogen pressure in self-regulating nuclear reactors used to treat a subsurface formation
US822416324 Oct 200317 Jul 2012Shell Oil CompanyVariable frequency temperature limited heaters
US822416424 Oct 200317 Jul 2012Shell Oil CompanyInsulated conductor temperature limited heaters
US822416521 Abr 200617 Jul 2012Shell Oil CompanyTemperature limited heater utilizing non-ferromagnetic conductor
US822586621 Jul 201024 Jul 2012Shell Oil CompanyIn situ recovery from a hydrocarbon containing formation
US823092716 May 201131 Jul 2012Shell Oil CompanyMethods and systems for producing fluid from an in situ conversion process
US823378229 Sep 201031 Jul 2012Shell Oil CompanyGrouped exposed metal heaters
US823873024 Oct 20037 Ago 2012Shell Oil CompanyHigh voltage temperature limited heaters
US824077413 Oct 200814 Ago 2012Shell Oil CompanySolution mining and in situ treatment of nahcolite beds