Invention Grant
- Patent Title: Method of using multicarboxylate compositions in enhanced oil recovery
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Application No.: US16259247Application Date: 2019-01-28
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Publication No.: US11248159B2Publication Date: 2022-02-15
- Inventor: Robert George Shong , Varadarajan Dwarakanath , Gregory A. Winslow , Sophany Thach
- Applicant: Chevron U.S.A. Inc.
- Applicant Address: US CA San Ramon
- Assignee: Chevron U.S.A. Inc.
- Current Assignee: Chevron U.S.A. Inc.
- Current Assignee Address: US CA San Ramon
- Agency: Hunton Andrews Kurth LLP
- Main IPC: C09K8/584
- 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.
Public/Granted literature
- US20190153299A1 METHOD OF USING MULTICARBOXYLATE COMPOSITIONS IN ENHANCED OIL RECOVERY Public/Granted day:2019-05-23
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