摘要
分子膜驱油是一种有别于传统化学驱的新型的驱油方法,其是依靠静电相互作用在呈负电性的岩石表面形成分子膜,从而改变界面的润湿性,驱替出孔隙中的残余油,提高驱油效率。实验表明:选用浓度为0.5%的分子膜注入,综合效果最好;分子膜注入后使其与地层岩石作用24h,甚至48h以上效果较好;分子膜注入后采用水驱是比较合适的。
Molecular film oil-displacing agent is a new type of oil-displacing agent,which is different from the traditional chemical oil-displacing agent.It is make use of electrostatic interaction to form molecular film on the negative charged rock surface,thereby changing the wettability of the interface of sandstone,displacing residual oil from the hole and improving oil-displacing efficiency.The experiment results show that molecular concentrations of 0.5% has the best general effect.The better time of mutual action between Molecular film and the strata rock is 24 hours,even more than 48 hours.Replacing water driving with After molecular film driving,water driving is more appropriate.
出处
《石油化工应用》
CAS
2011年第8期20-21,58,共3页
Petrochemical Industry Application
关键词
分子膜
驱油效率
注入参数
molecular film
oil-displacing efficiency
injection parameters
