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    • 69. 发明申请
    • ALKYLXYLENE SULFONATES FOR ENHANCED OIL RECOVERY PROCESSES
    • 烷基磺酸磺酸盐用于增强油回收过程
    • WO2005018300A2
    • 2005-03-03
    • PCT/US2004/025328
    • 2004-08-04
    • CHEVRON ORONITE COMPANY LLCCAMPBELL, Curt, B.SINQUIN, Gilles, P.
    • CAMPBELL, Curt, B.SINQUIN, Gilles, P.
    • C07C309/00C07C309/31C09K3/00C09K8/584E21B43/22
    • C09K8/584C07C309/31
    • 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).
    • 本发明涉及用于强化油采收过程的烷基二甲苯磺酸盐。 烷基二甲苯磺酸盐中的烷基二甲苯部分包含高百分比的4-烷基-1,2-二甲基苯异构体和高于烷基碳链2位的高百分比烷基连接到二甲苯环。 本发明还涉及一种提高从地下储层采收油的方法,该方法使用本发明的烷基二甲苯磺酸盐。 烷基二甲苯磺酸盐用于水性介质中。 该方法任选使用助表面活性剂。 令人惊讶地发现,高于烷基二甲苯磺酸盐上沿烷基碳链的2位的高比例的4-烷基-1,2-二甲基苯异构体和高百分比的烷基连接到二甲苯部分 本发明提供了具有低界面张力(IFT)的强化油采收率(EOR)表面活性剂。