VES自转向酸体系研究进展

Research Progress of VES based Self-diverting Acid System

李侠清 齐 宁 杨菲菲 于泽坤

LI Xia-Qing QI Ning YANG Fei-Fei YU Ze-Kun

黏弹性表面活性剂（VES）基自转向酸酸化技术是近年来兴起的一项针对非均质储层改造的新方法。本文总结了目前自转向酸酸化所用黏弹性表活剂的种类及类型，系统分析了阳离子型、两性离子型、非离子型以及孪连黏弹性表面活性剂自转向酸酸液体系之间的性能差异，确定了不同类型自转向酸体系的适用范围，指出了当前自转向酸应用中存在的问题，并据此展望了自转向酸体系的研究方向及发展前景。

As far as the disposal of heterogeneous reservoir is concerned, self-diverting acidizing technique is burgeoning one for reservoir reconstruction problem. In the paper, the species and types of viscoelastic surfactants (VES) used in self-diverting acid were summarized by investigating the research status and the latest development of self-diverting acid system. The performance differences of cationic viscoelastic surfactant, amphoteric viscoelastic surfactant, nonionic viscoelastic surfactant and Gemini viscoelastic surfactant based self-diverting acid systems were analyzed systematically. The applied scope of different types of self-diverting acid system was determined and present problems were pointed out. In addition, research direction and development prospect of self-diverting acid system were forecasted.