公开(公告)号：US20230257644A1

公开(公告)日：2023-08-17

申请号：US17920979

申请日：2021-04-26

Applicant: CHEVRON U.S.A. INC.

Inventor： Gayani W. PINNAWALA ,  Sujeewa S. PALAYANGODA ,  Gregory A. WINSLOW ,  Varadarajan DWARAKANATH ,  Kerry Kennedy SPILKER ,  Robert George SHONG

IPC: C09K8/584 ,  C09K8/60 ,  C09K8/68 ,  C09K8/588 ,  C07C57/13 ,  C07C309/22

CPC classification number: C09K8/584 ,  C09K8/604 ,  C09K8/68 ,  C09K8/588 ,  C07C57/13 ,  C07C309/22 ,  E21B43/26

Abstract: 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.

公开(公告)号：US20230183578A1

公开(公告)日：2023-06-15

申请号：US17920977

申请日：2021-04-26

Applicant: CHEVRON U.S.A. INC.

Inventor： Gayani W. PINNAWALA ,  Sujeewa S. PALAYANGODA ,  Gregory A. WINSLOW ,  Varadarajan DWARAKANATH ,  Kerry Kennedy SPILKER ,  Robert George SHONG

IPC: C09K23/02 ,  C09K23/12 ,  C09K8/584 ,  C09K8/68

CPC classification number: C09K23/02 ,  C09K23/12 ,  C09K8/584 ,  C09K8/68

Abstract: 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.

公开(公告)号：US20190153299A1

公开(公告)日：2019-05-23

申请号：US16259247

申请日：2019-01-28

Applicant: Chevron U.S.A. Inc.

Inventor： Robert George SHONG ,  Varadarajan DWARAKANATH ,  Gregory A. WINSLOW ,  Sophany THACH

IPC: C09K8/584 ,  C09K8/588 ,  C07C59/305 ,  E21B43/16

Abstract: 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.