Invention Application
- Patent Title: ALKYLXYLENE SULFONATES FOR ENHANCED OIL RECOVERY PROCESSES
- Patent Title (中): 烷基磺酸磺酸盐用于增强油回收过程
-
Application No.: PCT/US2004/025328Application Date: 2004-08-04
-
Publication No.: WO2005018300A2Publication Date: 2005-03-03
- Inventor: CAMPBELL, Curt, B. , SINQUIN, Gilles, P.
- Applicant: CHEVRON ORONITE COMPANY LLC , CAMPBELL, Curt, B. , SINQUIN, Gilles, P.
- Applicant Address: 6001 Bollinger Canyon Road, 3rd Floor, San Ramon, CA 94583 US
- Assignee: CHEVRON ORONITE COMPANY LLC,CAMPBELL, Curt, B.,SINQUIN, Gilles, P.
- Current Assignee: CHEVRON ORONITE COMPANY LLC,CAMPBELL, Curt, B.,SINQUIN, Gilles, P.
- Current Assignee Address: 6001 Bollinger Canyon Road, 3rd Floor, San Ramon, CA 94583 US
- Agency: KELLEY, Sarita, R.
- Priority: US10/893,729 20040715
- 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).
Information query