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公开(公告)号：US11319792B2
公开(公告)日：2022-05-03
申请号：US16441089
申请日：2019-06-14
Applicant: Chevron U.S.A. Inc.
Inventor： Daniel Chinn , Brent A. Hetrick , Nitesh Bhuwania , Shabbir Husain , Sam J. Mishael
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.
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2.发明申请公开(公告)号：US20190105602A1
公开(公告)日：2019-04-11
申请号：US15972256
申请日：2018-05-07
Applicant: Chevron U.S.A. Inc.
Inventor： Nitesh Bhuwania , Shabbir Husain , Daniel Chinn , Ronald P. MacDonald , Tapan K. Das
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.
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3.发明申请公开(公告)号：US20190105600A1
公开(公告)日：2019-04-11
申请号：US15971698
申请日：2018-05-04
Applicant: Chevron U.S.A. Inc.
Inventor： Daniel Chinn , Nitesh Bhuwania , Shabbir Husain , Ronald P. MacDonald , Tapan K. Das
CPC classification number: B01D53/1468 , B01D1/00 , B01D53/226 , B01D53/229 , B01D2252/204 , B01D2256/24 , B01D2257/304 , B01D2257/504 , C10L3/103 , C10L2290/548 , E21B43/34 , E21B43/40
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.
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公开(公告)号：US10905996B2
公开(公告)日：2021-02-02
申请号：US15972256
申请日：2018-05-07
Applicant: Chevron U.S.A. Inc.
Inventor： Nitesh Bhuwania , Shabbir Husain , Daniel Chinn , Ronald P. MacDonald , Tapan K. Das
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.
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公开(公告)号：US10391444B2
公开(公告)日：2019-08-27
申请号：US15971748
申请日：2018-05-04
Applicant: Chevron U.S.A. Inc.
Inventor： Daniel Chinn , Nitesh Bhuwania , Shabbir Husain , Ronald P. MacDonald , Tapan K. Das
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.
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Patent Agency Ranking
公开(公告)号：US10363518B2
公开(公告)日：2019-07-30
申请号：US15971698
申请日：2018-05-04
Applicant: Chevron U.S.A. Inc.
Inventor： Daniel Chinn , Nitesh Bhuwania , Shabbir Husain , Ronald P. MacDonald , Tapan K. Das
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.
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公开(公告)号：US10363517B2
公开(公告)日：2019-07-30
申请号：US15971643
申请日：2018-05-04
Applicant: Chevron U.S.A. Inc.
Inventor： Nitesh Bhuwania , Shabbir Husain , Daniel Chinn , Ronald P. MacDonald , Tapan K. Das
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.
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公开(公告)号：US20190105603A1
公开(公告)日：2019-04-11
申请号：US15972262
申请日：2018-05-07
Applicant: Chevron U.S.A. Inc.
Inventor： Nitesh Bhuwania , Shabbir Husain , Daniel Chinn , Ronald P. MacDonald , Tapan K. Das
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.
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9.发明申请公开(公告)号：US20190105599A1
公开(公告)日：2019-04-11
申请号：US15971643
申请日：2018-05-04
Applicant: Chevron U.S.A. Inc.
Inventor： Nitesh Bhuwania , Shabbir Husain , Daniel Chinn , Ronald P. MacDonald , Tapan K. Das
CPC classification number: B01D53/1468 , B01D53/1456 , B01D53/226 , B01D53/229 , B01D53/265 , B01D2252/204 , B01D2256/24 , B01D2257/304 , C10L3/103 , C10L3/106 , C10L2290/10 , C10L2290/548 , E21B43/34
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.
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公开(公告)号：US12215288B2
公开(公告)日：2025-02-04
申请号：US17618381
申请日：2020-06-09
Applicant: CHEVRON U.S.A. INC. , GEORGIA TECH RESEARCH CORPORATION
Inventor： William Koros , Yang Liu , Zhongyun Liu , Nitesh Bhuwania , Daniel Chinn
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.
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