Invention Application
- Patent Title: ALKYLXYLENE SULFONATES FOR ENHANCED OIL RECOVERY PROCESSES
- Patent Title (中): 用于增强油回收过程的亚苄基磺酸盐
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Application No.: PCT/US2004025328Application Date: 2004-08-04
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Publication No.: WO2005018300A3Publication Date: 2005-06-23
- Inventor: CAMPBELL CURT B , SINQUIN GILLES P
- Applicant: CHEVRON ORONITE CO , CAMPBELL CURT B , SINQUIN GILLES P
- Assignee: CHEVRON ORONITE CO,CAMPBELL CURT B,SINQUIN GILLES P
- Current Assignee: CHEVRON ORONITE CO,CAMPBELL CURT B,SINQUIN GILLES P
- Priority: US89372904 2004-07-15
- Main IPC: C07C309/00
- IPC: C07C309/00 ; C07C309/31 ; C09K3/00 ; C09K8/584 ; E21B43/22
Abstract:
The present invention is directed to alkylxylene sulfonate for enhanced oil recovery processes. The alkylxylene moiety in the alkylxylene sulfonate contains a high percentage of the 4-alkyl-1,2-dimethyl benzene isomer and a high percentage of alkyl group attachment to the xylene ring at positions higher than the 2-position on the alkyl carbon chain. The present invention is also directed to a method for enhancing the recovery of oil from a subterranean reservoir which method employs the alkylxylene sulfonate of the present invention. The alkylxylene sulfonate is employed in an aqueous media. The method optionally employs co-surfactants. It has surprisingly been discovered that the high percentage of the 4-alkyl-1,2-dimethyl benzene isomer and the high percentage alkyl group attachment to the xylene moiety at positions higher than the 2-position along the alkyl carbon chain on the alkylxylene sulfonate of the present invention provides an enhanced oil recovery (EOR) surfactant having low Interfacial Tension (IFT).
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