公开(公告)号：US12037542B2

公开(公告)日：2024-07-16

申请号：US17669043

申请日：2022-02-10

Applicant: CHEVRON U.S.A. INC.

Inventor： Robert George Shong ,  Varadarajab Dwarakanath ,  Gregory A. Winslow ,  Sophany Thach

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

CPC classification number: C09K8/584 ,  C07C59/305 ,  C09K8/588 ,  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.

公开(公告)号：US20220162499A1

公开(公告)日：2022-05-26

申请号：US17669043

申请日：2022-02-10

Applicant: CHEVRON U.S.A. INC.

Inventor： Robert George Shong ,  Varadarajab Dwarakanath ,  Gregory A. Winslow ,  Sophany Thach

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

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.