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公开(公告)号：US20190233716A1
公开(公告)日：2019-08-01
申请号：US16262216
申请日：2019-01-30
发明人： Dennis A. ALEXIS , Gayani PINNAWALA ARACHCHILAGE , Varadarajan DWARAKANATH , Do Hoon KIM , Taimur MALIK , Gregory A. WINSLOW , Aaron WILHELM
CPC分类号： C09K8/584 , C08K5/09 , C08K5/37 , C08L33/26 , C09K8/52 , C09K8/588 , C09K8/602 , C09K8/68 , C09K8/88 , C09K2208/28 , F17D1/16
摘要： Disclosed are compositions and methods for use in oil and gas operations.
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公开(公告)号：US20240327698A1
公开(公告)日：2024-10-03
申请号：US18496558
申请日：2023-10-27
申请人： CHEVRON U.S.A. INC.
发明人： Dustin L. WALKER , Gayani W. PINNAWALA , Nabijan NIZAMIDIN , Varadarajan DWARAKANATH , Guo-Qing TANG , Dustin J. LOWRY , Tetsuo A. INOUYE , Taimur MALIK
CPC分类号： C09K8/604 , C09K8/602 , C09K8/68 , C09K8/74 , C09K8/80 , C09K8/86 , E21B43/267 , E21B43/27 , E21B47/11 , C09K2208/10 , C09K2208/12 , C09K2208/26 , C09K2208/28 , C09K2208/32
摘要： Embodiments of the disclosure include compositions and methods that stabilize a injection fluid when exposed to reservoir conditions, reducing formation damage and increasing the amount of hydrocarbon recovered. Specifically, the formulation is a single-phase liquid surfactant package which comprises a surfactant and optionally one or more secondary surfactants. Also provided are methods of using the stabilized injection fluids in stimulation operations.
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公开(公告)号：US20240182781A1
公开(公告)日：2024-06-06
申请号：US18439282
申请日：2024-02-12
申请人： CHEVRON U.S.A. INC.
发明人： Gayani W. PINNAWALA , Sujeewa S. PALAYANGODA , Varadarajan DWARAKANATH , Mohamad SALMAN , Mohsen S. TAGAVIFAR
CPC分类号： C09K8/86 , C10G33/04 , C09K2208/26
摘要： Disclosed herein are methods and composition for breaking foam, emulsions, or any combination thereof.
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公开(公告)号：US20230183578A1
公开(公告)日：2023-06-15
申请号：US17920977
申请日：2021-04-26
申请人： CHEVRON U.S.A. INC.
发明人： Gayani W. PINNAWALA , Sujeewa S. PALAYANGODA , Gregory A. WINSLOW , Varadarajan DWARAKANATH , Kerry Kennedy SPILKER , Robert George SHONG
摘要： The present disclosure is directed to polyanionic surfactants, surfactant mixtures, compositions derived thereof, and uses thereof in hydrocarbon recovery. Methods of making polyanionic surfactants are also described.
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公开(公告)号：US20220389304A1
公开(公告)日：2022-12-08
申请号：US17770559
申请日：2020-10-30
发明人： Varadarajan DWARAKANATH , Gayani W. PINNAWALA , Andrew M. THOMAS , Curtis B. CAMPBELL , Andrew M. DAVIDSON , Ping WANG
摘要： The present disclosure is directed to surfactants (in particular olefin sulfonates), surfactant packages, compositions derived thereof, and uses thereof in hydrocarbon recovery. Methods of making olefin sulfonate surfactants are also described.
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公开(公告)号：US20200056087A1
公开(公告)日：2020-02-20
申请号：US16528183
申请日：2019-07-31
申请人： Chevron U.S.A. Inc.
发明人： Nabijan NIZAMIDIN , Gayani W. PINNAWALA , Guo-Qing TANG , Varadarajan DWARAKANATH , Gregory A. WINSLOW , Jordan Taylor Isbell , Taimur Malik
IPC分类号： C09K8/584 , C09K8/588 , C09K8/66 , C09K8/68 , C09K8/60 , C09K8/80 , E21B43/20 , E21B43/26 , E21B47/10
摘要： Provided herein are compositions comprising borate-acid buffers, as well as methods of using these compositions in oil and gas operations, including enhanced oil recovery (EOR) operations, fracturing operations, stimulation operations, etc.
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公开(公告)号：US20190233715A1
公开(公告)日：2019-08-01
申请号：US16262211
申请日：2019-01-30
发明人： Dennis A. ALEXIS , Gayani PINNAWALA ARACHCHILAGE , Varadarajan DWARAKANATH , Do Hoon KIM , Taimur MALIK , Gregory A. WINSLOW , Aaron WILHELM
CPC分类号： C09K8/584 , C08K5/09 , C08K5/37 , C08L33/26 , C09K8/52 , C09K8/588 , C09K8/602 , C09K8/68 , C09K8/88 , C09K2208/28 , F17D1/16
摘要： Disclosed are compositions and methods for use in oil and gas operations.
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18.发明公开公开(公告)号：US20240271032A1
公开(公告)日：2024-08-15
申请号：US18464691
申请日：2023-09-11
申请人： CHEVRON U.S.A. INC.
发明人： Dustin L. WALKER , Gayani W. PINNAWALA , Nabijan NIZAMIDIN , Varadarajan DWARAKANATH , Guo-Qing TANG , Dustin J. LOWRY , Tetsuo Art INOUYE , Taimur MALIK
CPC分类号： C09K8/604 , C09K8/602 , C09K8/68 , C09K8/74 , C09K8/80 , C09K8/86 , E21B43/267 , E21B43/27 , E21B47/11 , C09K2208/10 , C09K2208/12 , C09K2208/26 , C09K2208/28 , C09K2208/32
摘要： Embodiments of the disclosure include compositions and methods that stabilize a injection fluid when exposed to reservoir conditions, reducing formation damage and increasing the amount of hydrocarbon recovered. Specifically, the formulation is a single-phase liquid surfactant package which comprises an anionic surfactant and optionally one or more secondary surfactants.
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公开(公告)号：US20240052234A1
公开(公告)日：2024-02-15
申请号：US18488079
申请日：2023-10-17
申请人： CHEVRON U.S.A. INC.
发明人： Nabijan NIZAMIDIN , Gayani W. PINNAWALA , Guo-Qing TANG , Varadarajan DWARAKANATH , Gregory A. WINSLOW , Jordan Taylor ISBELL , Taimur MALIK
IPC分类号： C09K8/584 , C09K8/588 , C09K8/60 , C09K8/66 , C09K8/68 , C09K8/80 , E21B43/20 , E21B43/26 , E21B47/11
CPC分类号： C09K8/584 , C09K8/588 , C09K8/602 , C09K8/665 , C09K8/68 , C09K8/80 , E21B43/20 , E21B43/26 , E21B47/11
摘要： Provided herein are compositions comprising borate-acid buffers, as well as methods of using these compositions in oil and gas operations, including enhanced oil recovery (EOR) operations, fracturing operations, stimulation operations, etc.
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公开(公告)号：US20230332037A1
公开(公告)日：2023-10-19
申请号：US17920973
申请日：2021-04-26
申请人： CHEVRON U.S.A. INC.
IPC分类号： C09K8/584 , C09K8/588 , C09K8/60 , C09K8/68 , C07C309/22
摘要： The present disclosure is directed to polyanionic surfactants, surfactant mixtures, compositions derived thereof, and uses thereof such as in oil and gas operations. Methods of making polyanionic surfactants are also described.
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