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    • 9. 发明授权
    • Alkylxylene sulfonates for enhanced oil recovery processes
    • 用于提高采油工艺的烷基二甲苯磺酸盐
    • US07468343B2
    • 2008-12-23
    • US12008573
    • 2008-01-11
    • Curt B. CampbellGilles P. Sinquin
    • Curt B. CampbellGilles P. Sinquin
    • E21B21/14C09K8/584C07C313/00
    • C09K8/584C07C309/31
    • The present invention is directed to a method for enhancing the recovery of oil from a subterranean reservoir which method employs an alkylxylene sulfonate that 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 in an aqueous media, since 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 provides an enhanced oil recovery surfactant having low Interfacial Tension. The method optionally employs co-surfactants.
    • 本发明涉及一种用于增强从地下储层中回收油的方法,该方法使用含有高百分比的4-烷基-1,2-二甲基苯异构体的烷基二甲苯磺酸盐和高百分比的烷基附着 在水性介质中高于烷基碳链上2位的位置上的二甲苯环,因为惊奇地发现,高百分比的4-烷基-1,2-二甲基苯异构体和高百分比的烷基 在烷基二甲苯磺酸盐上沿着烷基碳链高于2-位的位置上的二甲苯部分的连接提供了具有低界面张力的增强的油回收表面活性剂。 该方法任选地使用助表面活性剂。