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公开(公告)号：US20230097814A1
公开(公告)日：2023-03-30
申请号：US17795059
申请日：2021-01-25
发明人： Gayani W. PINNAWALA , Nabijan NIZAMIDIN , Varadarajan DWARAKANATH , Guo-Qing TANG , Aaron WILHELM , Scott P. WEST
摘要： Described herein are surfactant compositions for use in oil and gas operations. The surfactant compositions are stable under harsh conditions, including in formations that exhibit high salinity, high temperature, and/or high H2S concentration. Also provided are methods of using these compositions. Specifically an aqueous composition comprising: (i) a surfactant package, wherein the surfactant package comprises: (a) a surfactant comprising a branched, unbranched, saturated, or unsaturated C6-C32:80(0-65):PO(0-65):EO(0-100)-X having a concentration within the aqueous composition of from 0.05%-5% by weight, based on the total weight of the aqueous composition, wherein there is at least one BO, PO, or EO group, and wherein X comprises a sulfonate, a disulfonate, a carboxylate, a dicarboxylate, a sulfosuccinate, a disulfosuccinate, or hydrogen: and (b) olefin sulfonate and/or a disulfonate; and (ii) water.
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公开(公告)号：US20220372361A1
公开(公告)日：2022-11-24
申请号：US17771587
申请日：2020-10-30
发明人： Gayani W. PINNAWALA , Varadarajan DWARAKANATH , 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：US20220363979A1
公开(公告)日：2022-11-17
申请号：US17771984
申请日：2020-10-30
发明人： Andrew M. THOMAS , Curtis B. CAMPBELL , Gayani W. PINNAWALA , Varadarajan DWARAKANATH , 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：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：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：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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7.发明公开公开(公告)号：US20240279532A1
公开(公告)日：2024-08-22
申请号：US18469134
申请日：2023-09-18
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 a non-ionic surfactant and optionally one or more secondary surfactants.
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公开(公告)号：US20190153299A1
公开(公告)日：2019-05-23
申请号：US16259247
申请日：2019-01-28
申请人： Chevron U.S.A. Inc.
IPC分类号： C09K8/584 , C09K8/588 , C07C59/305 , E21B43/16
摘要： The present disclosure relates to the use of a multicarboxylate, such as an alkyl alkoxy dicarboxylate, in enhanced oil recovery processes. Embodiments relate to an aqueous stream and the use thereof. The aqueous stream includes a compound having the chemical formula: R1-R2-R3, wherein R1 includes a branched or unbranched, saturated or unsaturated, cyclic or non-cyclic, hydrophobic carbon chain having an oxygen atom linking R1 and R2; R2 includes an alkoxylated chain comprising ethylene oxide, propylene oxide, butylene oxide, or a combination thereof; and R3 includes a branched or unbranched hydrocarbon chain and 2-5 —COOH or —COOM groups wherein M is a monovalent, divalent, or trivalent cation. R3 includes 2-12 carbon atoms.
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公开(公告)号：US20230183577A1
公开(公告)日：2023-06-15
申请号：US17920975
申请日：2021-04-26
申请人： CHEVRON U.S.A. INC.
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：US20230167353A1
公开(公告)日：2023-06-01
申请号：US17920974
申请日：2021-04-26
申请人： CHEVRON U.S.A. INC.
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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