阴-阳离子表面活性剂润湿性能研究

Study and application of the composite properties of anionic nonionic cationic surfactants

针对阴阳离子表面活性剂混合体系易结晶沉淀的问题,通过室内实验自制的双亲水头基、双聚醚官能团的阴非离子表面活性剂,并与含有阳离子的表面活性剂进行复配而成的阴阳离子表面活性剂体系,克服了阴、阳离子表面活性剂复配时容易生成沉淀、液晶等缺点。实验结果表明,该活性剂及体系具有良好的润湿性改变能力,可用于改变岩石润湿性能,降低低渗透油藏注水压力。

In view of the problem of easy crystallization and precipitation in the mixed system of anionic and cationic surfactants,the cationic and anionic surfactant,water head base of parents and anionic nonionic surfactants of polyether functional groups was maded by laboratory test,then compounded with surfactants containing cations,who overcomes the shortcomings of precipitation and liquid crystal when anionic and cationic surfactants are compounded.The experimental results show that the surfactant and the system have good wettability.It can be seen that the cationic and anionic surfactant system has a good effect of depressurization and injection.