有机分子膜增注剂减阻增注效果评价

针对低渗透砂岩油藏注水压力高、注水困难的问题，研制出有机分子膜减阻增注剂。通过岩心驱替实验和连续冲刷实验对3种有机分子膜增注剂BFS，BNFS和TD12的减阻效果和耐冲刷能力进行评价。结果表明，经分子膜增注剂溶液处理后，岩心的水相渗透率均有不同程度的提高；分子膜增注剂结构不同，减阻效果不同。累计注入260PV以上，3块岩心的水相渗透率变化幅度均不大，说明岩心微通道壁面吸附了分子膜增注剂后具有很好的耐冲刷能力。

Evaluation of Drag-reducing and Injection-augmenting Effect of Organic Molecular Membrane Injecting Agent

at the problems of high water - injecting pressure and water - injecting difficulty, organic molecular membrane injecting agents were developed for low permeable sandstone reservoir. The drag - reduc- ing effects and wash - resistant ability of three kinds of molecular membrane injecting agents （ BFS, BNFS, and TD12） were evaluated by core -flooding experiment and continuous wash test. The results showed that the water permeability of the cores treated by molecular membrane injecting agents increased at different levels. Drag - reducing effects were different while the structures of molecular membrane injection agents were different at different levels. The water permeability of three cores had no obvious change when the total injecting amount was more than 260 PV, which showed that the core had good wash - resistant ability after the mi- cro - channel wall of the core adsorbed the molecular membrane injecting agents.