以油酸钾和氯化钾形成的粘弹性表面活性剂体系(VES-Y)为基础.在VES-Y中加入交联剂(N,N'-亚甲基双丙烯酰胺)和引发剂(Na2S2O8),在N2气保护下,于60℃下恒温24 h,聚合得到阴离子型粘弹性表面活性剂凝胶(VES-G).对VES-G和VES-Y体系的耐温、抗有机烃、破胶及对储层伤害等性能进行了室内评价.结果表明,VES-G体系的耐温和抗剪切性能得到大幅度改善.对有机烃的敏感性明显减弱.破胶后VES-G体系的性能与VES-Y体系基本一致;且通过岩心流动实验证实,VES-G体系对储层不存在伤害,渗透率保留率>99%.
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