- 专利标题: METHOD OF USING MULTICARBOXYLATE COMPOSITIONS IN ENHANCED OIL RECOVERY
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申请号: US15471255申请日: 2017-03-28
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公开(公告)号: US20170198202A1公开(公告)日: 2017-07-13
- 发明人: Robert George Shong , Varadarajan Dwarakanath , Gregory A. Winslow , Sophany Thach
- 申请人: Chevron U.S.A. Inc.
- 主分类号: C09K8/584
- IPC分类号: C09K8/584 ; E21B43/16 ; C09K8/588
摘要:
The present disclosure relates to the use of a multicarboxylate, such as an alkyl alkoxy dicarboxylate, in enhanced oil recovery processes. A specific embodiment relates to the use of an aqueous stream including a compound having the chemical formula: R1—R2—R3, wherein R1 comprises a branched or unbranched, saturated or unsaturated, cyclic or non-cyclic, hydrophobic carbon chain having 7-150 carbon atoms; an oxygen atom linking R1 and R2; R2 comprises an alkoxylated chain comprising ethylene oxide, propylene oxide, butylene oxide, or a combination thereof; and R3 comprises a branched or unbranched hydrocarbon chain comprising 2-12 carbon atoms and 2-5 —COOH or —COOM groups wherein M is a monovalent, divalent, or trivalent cation.