低渗透油藏复合表面活性剂驱油体系研究  

Research on Compound Surfactants Flooding System for Low-permeability Reservoirs

作　　者：石彬 贾自力 党海龙 陈芳萍 周红燕 李玮 SHI Bin;JIA Zi-li;DANG Hai-long;CHEN Fang-ping;ZHOU Hong-yan;LI Wei(Research Institute of Shaanxi Yanchang Petroleum(Group)Co.,Ltd.,Xi'an Shaanxi 710065,China)

机构地区：[1]陕西延长石油(集团)有限责任公司研究院,陕西西安710065

出　　处：《当代化工》2023年第8期1943-1946,共4页Contemporary Chemical Industry

基　　金：陕西省自然科学基础研究计划项目(项目编号:2020JQ-765)。

摘　　要：以丙烯酸酯类单体为主要原料自制了高分子表面活性剂(MBSA),并将此高分子表面活性剂与小分子乳化剂复配,制得复合高分子表面活性剂驱油体系(MSTM)。通过界面张力、乳化性能、润湿性能以及驱油效率测试等对复合表面活性剂的性能进行了表征。结果表明:复合表面活性剂体系界面张力可维持在10^(-3)mN·m^(-1)这一数量级,加入3%质量分数MBSA的复合表面活性剂具有较佳的乳化性能,随着在MSTM2复合表面活性剂驱油体系中浸泡时间的不断增加,岩心表面接触角逐渐增加,其驱油效率升高。A polymeric surfactant(MBSA)was prepared with acrylate monomers as raw materials,and a composite surfactant oil displacement system(MSTM)was obtained by compounding the polymeric surfactant MBSA with low-molecular-weight surfactants.The performance of MSTM was characterized by the interfacial tension,emulsification performance,wetting performance and oil repellent efficiency tests.The results showed that the interfacial tension of MSTM could be maintained at the order of 10^(-3)mN·m^(-1).The MSTM had better emulsification performance with addition of mass fraction 3%MBSA.With the increase of immersion time in the MSTM2 composite surfactant oil displacement system,the contact angle of the core surface gradually increased,and its oil displacement efficiency increased.

关 键 词：低渗油藏 复合表面活性剂 界面张力 乳化性能 润湿性能 

分 类 号：TQ633[化学工程—精细化工]