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一种含阳离子双子表面活性剂的驱油剂及其应用方法

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§ Ⅰ

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C09K 8/584 (2006.01)E21B 43/22 (2006.01)

本发明公开了一种含阳离子双子表面活性剂的驱油剂及其应用方法,包括双季铵盐型双子表面活性剂,适用于非常规油藏,通过阳离子双子表面活性剂在微毛细管孔隙中的高效吸附与水膜调控,增强逆向渗吸作用;渗吸实验结果表明0.15%N,N,N,N',N',N'六甲基乙二铵二氯化物和0.15%N,N,N,N',N',N'六甲基丙二铵二氯化物双子表面活性剂渗吸液采收率分别达到38.15%和36.05%,分别提高8%和6%;对新井和老井的现场实施案例表明采收率可分别提高22.3%~47.15%。

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