Patents by Inventor David W. Larkin
David W. Larkin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230323220Abstract: The invention relates to various nonlimiting embodiments that include methods, apparatuses or systems for processing natural gas comprising a heavies removal column processing natural gas and light oil reflux. The overhead stream goes to heavies treated natural gas storage. The heavies removal column reboiler bottoms stream product is input to a debutanizer column. The debutanizer column overhead lights are input to a flash drum where the bottoms is pumped through a heat exchanger as a light oil reflux input to the heavies removal column, while the debutanizer reboiler bottoms product is stored as stabilized condensate. Alternatively, debutanizer column overhead lights are sent to heavies treated gas storage and the bottoms stream product goes to a depentanizer column, the overhead lights are pumped through a heat exchanger as a light oil reflux input to the heavies removal column, while the depentanizer reboiler bottoms product is stabilized condensate.Type: ApplicationFiled: June 13, 2023Publication date: October 12, 2023Inventors: Paul R. DAVIES, Michael J. CALDERON, Dale L. EMBRY, David W. LARKIN, Qi MA
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Patent number: 11713423Abstract: The invention relates to various nonlimiting embodiments that include methods, apparatuses or systems for processing natural gas comprising a heavies removal column processing natural gas and light oil reflux. The overhead stream goes to heavies treated natural gas storage. The heavies removal column reboiler bottoms stream product is input to a debutanizer column. The debutanizer column overhead lights are input to a flash drum where the bottoms is pumped through a heat exchanger as a light oil reflux input to the heavies removal column, while the debutanizer reboiler bottoms product is stored as stabilized condensate. Alternatively, debutanizer column overhead lights are sent to heavies treated gas storage and the bottoms stream product goes to a depentanizer column, the overhead lights are pumped through a heat exchanger as a light oil reflux input to the heavies removal column, while the depentanizer reboiler bottoms product is stabilized condensate.Type: GrantFiled: December 18, 2020Date of Patent: August 1, 2023Assignee: CONOCOPHILLIPS COMPANYInventors: Paul R. Davies, Michael J. Calderon, Dale L. Embry, David W. Larkin, Qi Ma
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Publication number: 20220260311Abstract: The invention relates to a system, method and apparatus for removing heavies from natural gas. Natural gas and an external rich reflux gas feed are processed in a single column refluxed absorber. A bottoms stream is routed to a first heat exchanger and then to a stabilizer column where an overhead stream from the stabilizer column is routed through a condenser for partial separation into an overhead stream. A rich solvent may be introduced to the stabilizer column. The overhead stream is routed through a condenser for partial separation into a stabilizer reflux and a second overhead stream lights. The second overhead stream lights is routed to a heat exchanger and then routed to a partial condenser where the stream is separated into a heavies rich reflux stream, a distillate stream and heavies treated natural gas stream.Type: ApplicationFiled: May 3, 2022Publication date: August 18, 2022Inventors: Dale L. EMBRY, Paul R. DAVIES, Qi MA, David W. LARKIN, Michael J. CALDERON
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Patent number: 11320197Abstract: The invention relates to a system, method and apparatus for removing heavies from natural gas. Natural gas and an external rich reflux gas feed are processed in a single column refluxed absorber. A bottoms stream is routed to a first heat exchanger and then to a stabilizer column where an overhead stream from the stabilizer column is routed through a condenser for partial separation into an overhead stream. A rich solvent may be introduced to the stabilizer column. The overhead stream is routed through a condenser for partial separation into a stabilizer reflux and a second overhead stream lights. The second overhead stream lights is routed to a heat exchanger and then routed to a partial condenser where the stream is separated into a heavies rich reflux stream, a distillate stream and heavies treated natural gas stream.Type: GrantFiled: March 20, 2018Date of Patent: May 3, 2022Assignee: CONOCOPHILLIPS COMPANYInventors: Dale L. Embry, Paul R. Davies, Qi Ma, David W. Larkin, Michael J. Calderon
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Publication number: 20210108147Abstract: The invention relates to various nonlimiting embodiments that include methods, apparatuses or systems for processing natural gas comprising a heavies removal column processing natural gas and light oil reflux. The overhead stream goes to heavies treated natural gas storage. The heavies removal column reboiler bottoms stream product is input to a debutanizer column. The debutanizer column overhead lights are input to a flash drum where the bottoms is pumped through a heat exchanger as a light oil reflux input to the heavies removal column, while the debutanizer reboiler bottoms product is stored as stabilized condensate. Alternatively, debutanizer column overhead lights are sent to heavies treated gas storage and the bottoms stream product goes to a depentanizer column, the overhead lights are pumped through a heat exchanger as a light oil reflux input to the heavies removal column, while the depentanizer reboiler bottoms product is stabilized condensate.Type: ApplicationFiled: December 18, 2020Publication date: April 15, 2021Inventors: Paul R. DAVIES, Michael J. CALDERON, Dale L. EMBRY, David W. LARKIN, Qi MA
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Patent number: 10899974Abstract: The invention relates to various nonlimiting embodiments that include methods, apparatuses or systems for processing natural gas comprising a heavies removal column processing natural gas and light oil reflux. The overhead stream goes to heavies treated natural gas storage. The heavies removal column reboiler bottoms stream product is input to a debutanizer column. The debutanizer column overhead lights are input to a flash drum where the bottoms is pumped through a heat exchanger as a light oil reflux input to the heavies removal column, while the debutanizer reboiler bottoms product is stored as stabilized condensate. Alternatively, debutanizer column overhead lights are sent to heavies treated gas storage and the bottoms stream product goes to a depentanizer column, the overhead lights are pumped through a heat exchanger as a light oil reflux input to the heavies removal column, while the depentanizer reboiler bottoms product is stabilized condensate.Type: GrantFiled: March 20, 2018Date of Patent: January 26, 2021Assignee: CONOCOPHILLIPS COMPANYInventors: Paul R. Davies, Michael J. Calderon, Dale L. Embry, David W. Larkin, Qi Ma
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Publication number: 20180273858Abstract: The invention relates to various nonlimiting embodiments that include methods, apparatuses or systems for processing natural gas comprising a heavies removal column processing natural gas and light oil reflux. The overhead stream goes to heavies treated natural gas storage. The heavies removal column reboiler bottoms stream product is input to a debutanizer column. The debutanizer column overhead lights are input to a flash drum where the bottoms is pumped through a heat exchanger as a light oil reflux input to the heavies removal column, while the debutanizer reboiler bottoms product is stored as stabilized condensate. Alternatively, debutanizer column overhead lights are sent to heavies treated gas storage and the bottoms stream product goes to a depentanizer column, the overhead lights are pumped through a heat exchanger as a light oil reflux input to the heavies removal column, while the depentanizer reboiler bottoms product is stabilized condensate.Type: ApplicationFiled: March 20, 2018Publication date: September 27, 2018Inventors: Paul R. DAVIES, Michael J. CALDERON, Dale L. EMBRY, David W. LARKIN, Qi MA
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Publication number: 20180266757Abstract: The invention relates to a system, method and apparatus for removing heavies from natural gas. Natural gas and an external rich reflux gas feed are processed in a single column refluxed absorber. A bottoms stream is routed to a first heat exchanger and then to a stabilizer column where an overhead stream from the stabilizer column is routed through a condenser for partial separation into an overhead stream. A rich solvent may be introduced to the stabilizer column. The overhead stream is routed through a condenser for partial separation into a stabilizer reflux and a second overhead stream lights. The second overhead stream lights is routed to a heat exchanger and then routed to a partial condenser where the stream is separated into a heavies rich reflux stream, a distillate stream and heavies treated natural gas stream.Type: ApplicationFiled: March 20, 2018Publication date: September 20, 2018Inventors: Dale L. EMBRY, Paul R. DAVIES, Qi MA, David W. LARKIN, Michael J. CALDERON
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Publication number: 20150308231Abstract: Methods and systems generate steam for oil recovery operations. The systems may limit feedwater pretreatment expenses and fouling issues. In the method, dirty feedwater introduced into a vessel containing a hot liquid hydrocarbon, e.g., an already hot produced hydrocarbon, contacts the hydrocarbon and is vaporized into steam. The steam collects in a top of the vessel and may be conveyed to the wellhead for downhole injection. The hydrocarbon remains heated by a closed circulation loop passing back and forth through a lower half of the vessel containing the hydrocarbon. The fluid in this loop remains isolated from contaminates in the water to limit fouling in tubes, which form the loop and can employ normal metallurgy to save on capital costs. The hydrocarbon can be treated as needed to remove accumulating salts and/or entrained water and recycled.Type: ApplicationFiled: April 9, 2015Publication date: October 29, 2015Inventor: David W. LARKIN
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Publication number: 20150096754Abstract: Systems and methods relate to vaporizing water into steam, which may be utilized in applications such as bitumen production. Initial indirect vaporization of the water at a first pressure for treatment precedes a steam generator boiling the water at a second pressure higher than the first pressure. The indirect vaporization of the water occurs in a vessel upon contact of the water with a substance such as solid particulate heated to a temperature sufficient to vaporize the water. Impurities in the water deposit on the solid particulate and/or combust limiting pass through of the impurities to the steam generator given that a vapor output of the vessel from the initial indirect vaporization condenses and is pressurized before being supplied to the steam generator.Type: ApplicationFiled: October 9, 2014Publication date: April 9, 2015Inventors: David W. LARKIN, Peter N. SLATER, Kening GONG
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Publication number: 20140165929Abstract: Systems and methods relate to vaporizing water into steam, which may be utilized in applications such as bitumen production. The methods rely on indirect boiling of the water by contact with a substance such as solid particulate heated to a temperature sufficient to vaporize the water. Heating of the solid particulate may utilize pressure isolated heat exchanger units or a hot gas recirculation circuit at a pressure corresponding to that desired for the steam. Further, the water may form part of a mixture that contacts the solid particulate and includes a solvent for the bitumen in order to limit vaporization energy requirements and facilitate the production.Type: ApplicationFiled: December 3, 2013Publication date: June 19, 2014Applicant: CONOCOPHILLIPS COMPANYInventor: David W. LARKIN
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Publication number: 20140166538Abstract: Systems and methods generate steam in hydrocarbon recovery operations and may further enable emulsion separation and product upgrading. The methods rely on indirect boiling of water by contact with a thermal transfer liquid heated to a temperature sufficient to vaporize the water. Examples of the liquid include oils, recovered hydrocarbons, liquid metals and brine. Heating of the liquid may utilize circulation of the liquid across or through a furnace, heat exchangers, or a gas-liquid contactor supplied with hot gas. Further, a solvent for bitumen introduced into the water may also vaporize upon contact with the thermal transfer liquid.Type: ApplicationFiled: December 3, 2013Publication date: June 19, 2014Applicant: CONOCOPHILLIPS COMPANYInventors: David W. LARKIN, Peter N. SLATER, Richard D. SADOK
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Publication number: 20140166281Abstract: Systems and methods generate steam in hydrocarbon recovery operations and may further enable emulsion separation and product upgrading. The methods rely on indirect boiling of water by contact with a thermal transfer liquid heated to a temperature sufficient to vaporize the water. Examples of the liquid include oils, recovered hydrocarbons, liquid metals and brine. Heating of the liquid may utilize circulation of the liquid across or through a furnace, heat exchangers, or a gas-liquid contactor supplied with hot gas. Further, a solvent for bitumen introduced into the water may also vaporize upon contact with the thermal transfer liquid.Type: ApplicationFiled: December 11, 2013Publication date: June 19, 2014Applicant: CONOCOPHILLIPS COMPANYInventors: David W. LARKIN, Peter N. SLATER, Christopher R. COPELAND, Richard D. SADOK
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Publication number: 20140165928Abstract: Systems and methods relate to vaporizing water into steam, which may be utilized in applications such as bitumen production. The methods rely on indirect boiling of the water by contact with a substance such as solid particulate heated to a temperature sufficient to vaporize the water. Heating of the solid particulate may utilize pressure isolated heat exchanger units or a hot gas recirculation circuit at a pressure corresponding to that desired for the steam. Further, the water may form part of a mixture that contacts the solid particulate and includes a solvent for the bitumen in order to limit vaporization energy requirements and facilitate the production.Type: ApplicationFiled: December 3, 2013Publication date: June 19, 2014Applicant: CONOCOPHILLIPS COMPANYInventors: David W. LARKIN, Scott D. LOVE, Scott MACADAM, Peter N. SLATER, Edward G. LATIMER, Richard B. MILLER
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Publication number: 20140165930Abstract: Systems and methods relate to vaporizing water into steam, which may be utilized in applications such as bitumen production. The methods rely on indirect boiling of the water by contact with a substance such as solid particulate heated to a temperature sufficient to vaporize the water. Heating of the solid particulate may utilize pressure isolated heat exchanger units or a hot gas recirculation circuit at a pressure corresponding to that desired for the steam. Further, the water may form part of a mixture that contacts the solid particulate and includes a solvent for the bitumen in order to limit vaporization energy requirements and facilitate the production.Type: ApplicationFiled: December 5, 2013Publication date: June 19, 2014Applicant: CONOCOPHILLIPS COMPANYInventors: David W. LARKIN, Scott D. LOVE, Scott MACADAM, Peter N. SLATER
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Publication number: 20130244312Abstract: The disclosure pertains to removal of carbon dioxide from industrial gas streams. Processes and systems are disclosed for capturing carbon dioxide from a combustion flue gas or from uncombusted natural gas by contacting with an amine blend in a first step, and an advanced solvent in a second step.Type: ApplicationFiled: September 13, 2012Publication date: September 19, 2013Applicant: PHILLIPS 66 COMPANYInventors: David W. Larkin, Clint P. Aichele, Debangshu Guha
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Patent number: 8182672Abstract: A process for preparing basestocks having superior low temperature properties at high viscosity index (VI). More particularly, a waxy feedstock is contacted with a first dewaxing catalyst having a refined constraint index (CI*) 2.0 or less followed by contacting with a second dewaxing catalyst having a refined constraint index greater than 2.0.Type: GrantFiled: December 16, 2008Date of Patent: May 22, 2012Assignee: ExxonMobil Research and Engineering CompanyInventors: Michel Daage, David W. Larkin, William J. Murphy
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Patent number: 7662273Abstract: A process for producing lube oil basestocks wherein a wax containing lube oil boiling range feedstream is converted into a basestock suitable for use in motor oil applications by contacting it with a hydrodewaxing catalyst containing a medium pore molecular sieve having deposited thereon an active metal oxide and at least one hydrogenation metal selected from the Group VIII and Group VIB metals.Type: GrantFiled: August 17, 2005Date of Patent: February 16, 2010Assignee: ExxonMobil Research and Engineering CompanyInventors: William J. Murphy, Stuart L. Soled, Ian A. Cody, David W. Larkin, Terry E. Helton, Gary B. McVicker
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Patent number: 7638453Abstract: A catalyst composition containing a medium pore molecular sieve having deposited thereon an active metal oxide and at least one hydrogenation metal selected from the Group VIII and Group VIB metals for use in hydrodewaxing lube oil boiling range feedstreams.Type: GrantFiled: August 17, 2005Date of Patent: December 29, 2009Assignee: ExxonMobile Research and Engineering CompanyInventors: William J. Murphy, Stuart L. Soled, Ian A. Cody, David W. Larkin, Terry E. Helton, Gary B. McVicker
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Publication number: 20090166252Abstract: A process for preparing basestocks having superior low temperature properties at high viscosity index (VI). More particularly, a waxy feedstock is contacted with a first dewaxing catalyst having a refined constraint index (CI*) 2.0 or less followed by contacting with a second dewaxing catalyst having a refined constraint index greater than 2.0.Type: ApplicationFiled: December 16, 2008Publication date: July 2, 2009Inventors: Michel Daage, David W. Larkin, William J. Murphy