Patents by Inventor Daniel Chinn

Daniel Chinn 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).

  • Patent number: 11926674
    Abstract: The invention provides anti-Jagged2 antibodies and methods of using the same.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: March 12, 2024
    Assignee: Genentech, Inc.
    Inventors: Yvonne Chinn, Julie Q. Hang, Christian W. Siebel, Yan Wu, Daniel Lafkas
  • Publication number: 20240027129
    Abstract: The present invention is directed to a method for removing elemental mercury from liquid natural gas comprising changing the stabilizer column operating conditions to beneficially transfer mercury from the stabilized condensate phase to the overhead gas phase, where it may be compressed and recycled with the gas going to the existing feed gas mercury removal units.
    Type: Application
    Filed: March 27, 2023
    Publication date: January 25, 2024
    Inventors: Christine Marie LONG, Daniel CHINN, Jinhua BAI, Russell E. COOPER, Joshua A. THOMPSON
  • Publication number: 20220306955
    Abstract: Disclosed is a method for removing hydrogen sulfide from natural gas. The method includes passing a natural gas feed including methane and hydrogen sulfide (H2S) through a membrane at normal operating conditions. The membrane is an asymmetric hollow fiber membrane or an asymmetric film composite membrane including a porous layer and a nonporous skin layer. The asymmetric hollow fiber membrane or the nonporous skin layer of the asymmetric film composite membrane plasticizes during the method by exposure to condensable gases with high critical temperature under the operating conditions. The membrane preferentially removes H2S over methane from the natural gas feed at a H2S/methane selectivity of from 7 to 40 when measured at 35° C. and 45 bar.
    Type: Application
    Filed: June 9, 2020
    Publication date: September 29, 2022
    Inventors: WILLIAM KOROS, YANG LIU, ZHONGYUN LIU, NITESH BHUWANIA, DANIEL CHINN
  • Publication number: 20220168686
    Abstract: The present invention is directed to a method of capturing CO2 from a FCC regenerator using select membranes.
    Type: Application
    Filed: October 5, 2021
    Publication date: June 2, 2022
    Inventors: Daniel CHINN, Nitesh BHUWANIA, Alice Zunqing HE
  • Patent number: 11319792
    Abstract: Disclosed are methods and systems for reducing elemental sulfur production in a gas production plant that includes receiving produced fluids high in hydrogen sulfide, removing hydrogen sulfide and converting hydrogen sulfide to elemental sulfur in a Claus unit. An acid gas stream is diverted from a feed line to the Claus unit in the gas processing plant and directed to a multistage acid gas compressor. An elemental sulfur production rate is reduced without reducing a production rate of the produced fluids. The compressed acid gas stream can be injected into a subterranean formation. In some embodiments, the gas production plant is integrated with an oil processing and gas injection plant.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: May 3, 2022
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Daniel Chinn, Brent A. Hetrick, Nitesh Bhuwania, Shabbir Husain, Sam J. Mishael
  • Publication number: 20210285720
    Abstract: The present invention is directed to a method for removing elemental mercury from liquid natural gas comprising changing the stabilizer column operating conditions to beneficially transfer mercury from the stabilized condensate phase to the overhead gas phase, where it may be compressed and recycled with the gas going to the existing feed gas mercury removal units.
    Type: Application
    Filed: March 11, 2021
    Publication date: September 16, 2021
    Inventors: Daniel CHINN, Joshua A. THOMPSON, Russell E. COOPER, Vijay PRADHAN, Tonya Jean Fisher
  • Patent number: 10905996
    Abstract: Disclosed are systems and methods for producing oil and gas while removing hydrogen sulfide from fluids produced from oil and gas reservoirs. Hydrogen sulfide-selective membranes are used to remove hydrogen sulfide from bottlenecked plant process steps including hydrogen sulfide removal. In some embodiments of the present disclosure, plant processing efficiency is improved for processing of high temperature associated gas streams by using membranes while integrating heat from other existing process streams. In other embodiments of the present disclosure, plant processing efficiency is improved for processing of high temperature associated gas streams by using high temperature tolerant polymer membranes. Oil and/or gas production is increased.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: February 2, 2021
    Assignee: Chevron U.S.A. Inc.
    Inventors: Nitesh Bhuwania, Shabbir Husain, Daniel Chinn, Ronald P. MacDonald, Tapan K. Das
  • Patent number: 10843129
    Abstract: Disclosed are systems and methods for processing gas produced from oil and gas reservoirs while removing mercaptans from the gas. Mercaptan-selective membranes are used to debottleneck known systems and methods by removing mercaptans from bottlenecked plant process steps including LPG fractionation and mercaptan sweetening. Hydrogen sulfide can be simultaneously removed by the membranes. Production of on specification LPG and sales gases can be increased.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: November 24, 2020
    Assignee: Chevron U.S.A. Inc.
    Inventors: Nitesh Bhuwania, Shabbir Husain, Daniel Chinn, Ronald P. MacDonald, Tapan K. Das
  • Publication number: 20200102509
    Abstract: Provided herein is a process for separating alkane isomers from a hydrocarbon mixture in an integrated refining unit, comprising: passing the hydrocarbon mixture through a normal alkane-selective membrane in a single stage to produce a normal alkane-enriched stream and a membrane reject stream; and feeding the normal alkane-enriched stream to a steam cracker to produce olefins; wherein the hydrocarbon mixture comprises n-paraffins and at least two of isoparaffins, cycloparaffins, and aromatics.
    Type: Application
    Filed: September 27, 2019
    Publication date: April 2, 2020
    Inventors: Nitesh Bhuwania, Viorel Duma, Daniel Chinn, Theodorus Ludovicus Michael Maesen
  • Publication number: 20190383128
    Abstract: Disclosed are methods and systems for reducing elemental sulfur production in a gas production plant that includes receiving produced fluids high in hydrogen sulfide, removing hydrogen sulfide and converting hydrogen sulfide to elemental sulfur in a Claus unit. An acid gas stream is diverted from a feed line to the Claus unit in the gas processing plant and directed to a multistage acid gas compressor. An elemental sulfur production rate is reduced without reducing a production rate of the produced fluids. The compressed acid gas stream can be injected into a subterranean formation. In some embodiments, the gas production plant is integrated with an oil processing and gas injection plant.
    Type: Application
    Filed: June 14, 2019
    Publication date: December 19, 2019
    Inventors: Daniel CHINN, Brent A. HETRICK, Nitesh BHUWANIA, Shabbir HUSAIN, Sam J. MISHAEL
  • Patent number: 10391444
    Abstract: Disclosed are systems and methods for producing oil and gas while removing hydrogen sulfide from fluids produced from oil and gas reservoirs and injecting a sour gas stream containing the hydrogen sulfide into an underground formation. Hydrogen sulfide-selective membranes are used to debottleneck known systems and methods by removing hydrogen sulfide from bottlenecked plant process steps including sour gas compression, hydrogen sulfide removal and sour gas injection. Pressure ratio across the membranes can also be manipulated to provide further debottlenecking. Gas-gas eductors are also disclosed for use in leveraging relatively high-pressure streams to boost the pressure of low pressure streams. Oil production is thus increased.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: August 27, 2019
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Daniel Chinn, Nitesh Bhuwania, Shabbir Husain, Ronald P. MacDonald, Tapan K. Das
  • Patent number: 10363517
    Abstract: Disclosed are systems and methods for producing oil and gas in a plant while removing hydrogen sulfide and water from fluids produced from oil and gas reservoirs and injecting a sour gas stream containing the hydrogen sulfide into an underground formation. Water-selective membranes are used to debottleneck known systems and methods by removing water from bottlenecked sections of the plant including pretreatment of a sour gas feed to one or more gas processing plants. In other aspects, water-selective membranes are used to debottleneck the pretreatment of an acid gas feed to a Claus unit to convert hydrogen sulfide to sulfur in a gas processing plant. The water-selective membranes pretreat the acid gas feed.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: July 30, 2019
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Nitesh Bhuwania, Shabbir Husain, Daniel Chinn, Ronald P. MacDonald, Tapan K. Das
  • Patent number: 10363518
    Abstract: Disclosed are systems and methods for increasing oil production in an integrated oil and gas production plant including hydrogen sulfide removal and sour-gas injection into an underground formation. Hydrogen sulfide-selective membranes are used to debottleneck known systems and methods by removing hydrogen sulfide from bottlenecked plant process steps including sour gas compression, hydrogen sulfide removal and sour gas injection. A method of retrofitting an integrated plant includes adding a hydrogen sulfide-selective membrane upstream of an amine unit to remove hydrogen sulfide from an associated gas stream and form a permeate stream enriched in hydrogen sulfide and a retentate stream depleted in hydrogen sulfide and enriched in hydrocarbon gases. Less hydrogen sulfide is sent to the amine unit and oil production is higher than in the integrated plant without the hydrogen sulfide-selective membrane.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: July 30, 2019
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Daniel Chinn, Nitesh Bhuwania, Shabbir Husain, Ronald P. MacDonald, Tapan K. Das
  • Publication number: 20190105600
    Abstract: Disclosed are systems and methods for increasing oil production in an integrated oil and gas production plant including hydrogen sulfide removal and sour-gas injection into an underground formation. Hydrogen sulfide-selective membranes are used to debottleneck known systems and methods by removing hydrogen sulfide from bottlenecked plant process steps including sour gas compression, hydrogen sulfide removal and sour gas injection. A method of retrofitting an integrated plant includes adding a hydrogen sulfide-selective membrane upstream of an amine unit to remove hydrogen sulfide from an associated gas stream and form a permeate stream enriched in hydrogen sulfide and a retentate stream depleted in hydrogen sulfide and enriched in hydrocarbon gases. Less hydrogen sulfide is sent to the amine unit and oil production is higher than in the integrated plant without the hydrogen sulfide-selective membrane.
    Type: Application
    Filed: May 4, 2018
    Publication date: April 11, 2019
    Inventors: Daniel Chinn, Nitesh Bhuwania, Shabbir Husain, Ronald P. MacDonald, Tapan K. Das
  • Publication number: 20190105601
    Abstract: Disclosed are systems and methods for producing oil and gas while removing hydrogen sulfide from fluids produced from oil and gas reservoirs and injecting a sour gas stream containing the hydrogen sulfide into an underground formation. Hydrogen sulfide-selective membranes are used to debottleneck known systems and methods by removing hydrogen sulfide from bottlenecked plant process steps including sour gas compression, hydrogen sulfide removal and sour gas injection. Pressure ratio across the membranes can also be manipulated to provide further debottlenecking. Gas-gas eductors are also disclosed for use in leveraging relatively high-pressure streams to boost the pressure of low pressure streams. Oil production is thus increased.
    Type: Application
    Filed: May 4, 2018
    Publication date: April 11, 2019
    Inventors: Daniel Chinn, Nitesh Bhuwania, Shabbir Husain, Ronald P. MacDonald, Tapan K. Das
  • Publication number: 20190105602
    Abstract: Disclosed are systems and methods for producing oil and gas while removing hydrogen sulfide from fluids produced from oil and gas reservoirs. Hydrogen sulfide-selective membranes are used to remove hydrogen sulfide from bottlenecked plant process steps including hydrogen sulfide removal. In some embodiments of the present disclosure, plant processing efficiency is improved for processing of high temperature associated gas streams by using membranes while integrating heat from other existing process streams. In other embodiments of the present disclosure, plant processing efficiency is improved for processing of high temperature associated gas streams by using high temperature tolerant polymer membranes. Oil and/or gas production is increased.
    Type: Application
    Filed: May 7, 2018
    Publication date: April 11, 2019
    Inventors: Nitesh Bhuwania, Shabbir Husain, Daniel Chinn, Ronald P. MacDonald, Tapan K. Das
  • Publication number: 20190105599
    Abstract: Disclosed are systems and methods for producing oil and gas in a plant while removing hydrogen sulfide and water from fluids produced from oil and gas reservoirs and injecting a sour gas stream containing the hydrogen sulfide into an underground formation. Water-selective membranes are used to debottleneck known systems and methods by removing water from bottlenecked sections of the plant including pretreatment of a sour gas feed to one or more gas processing plants. In other aspects, water-selective membranes are used to debottleneck the pretreatment of an acid gas feed to a Claus unit to convert hydrogen sulfide to sulfur in a gas processing plant. The water-selective membranes pretreat the acid gas feed.
    Type: Application
    Filed: May 4, 2018
    Publication date: April 11, 2019
    Inventors: Nitesh Bhuwania, Shabbir Husain, Daniel Chinn, Ronald P. MacDonald, Tapan K. Das
  • Publication number: 20190105603
    Abstract: Disclosed are systems and methods for processing gas produced from oil and gas reservoirs while removing mercaptans from the gas. Mercaptan-selective membranes are used to debottleneck known systems and methods by removing mercaptans from bottlenecked plant process steps including LPG fractionation and mercaptan sweetening. Hydrogen sulfide can be simultaneously removed by the membranes. Production of on specification LPG and sales gases can be increased.
    Type: Application
    Filed: May 7, 2018
    Publication date: April 11, 2019
    Inventors: Nitesh Bhuwania, Shabbir Husain, Daniel Chinn, Ronald P. MacDonald, Tapan K. Das
  • Publication number: 20180251688
    Abstract: Particulate mercury is removed from crude oil by thermally treating the crude oil or condensate at temperatures in a range from 150° C. to 350° C. and at a sufficient pressure with subsequent cooling under maintenance of pressure to provide irreversible conversion to elemental mercury, which may be preferentially removed in a mercury removal unit.
    Type: Application
    Filed: April 4, 2018
    Publication date: September 6, 2018
    Inventors: Dennis John O'Rear, Russell Evan Cooper, Daniel Chinn, Tapan K. Das
  • Patent number: 10041014
    Abstract: A process for removal of mercury in a gas dehydration system comprising (a) adding a complexing agent to a recirculated glycol solvent as part of the glycol solution feed prior to or at the dehydration liquid contactor and recirculating continuously with the glycol solvent, (b) selectively reacting the complexing agent with mercury in the wet natural gas to remove the mercury from the dry natural gas product, (c) and feeding the rich glycol with the complexing agent to a regenerator and continuously regenerating.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: August 7, 2018
    Assignee: Chevron U.S.A. Inc.
    Inventors: Joshua Allen Thompson, Daniel Chinn, Evan Shigeto Hatakeyama, Ryan Oliver Owen