钻井液与完井液2011，Vol.28Issue(4)：60-63,4.
VES自转向酸破胶问题研究
摘要
Abstract
VE S self-diversion acid has the characteristics of viscosify ing, retarding reaction rate, reducing leakage of acid and no damage, and it can realize long interval and multilayer reservoir acidizing stimulation, which has been widely used. However, the VES system causes damage to reservoirs which needs a long time to reach the maximum production. In this paper, the gel breaking performances of VES fluid at different shear rate and different region has been studied. The experimental resultsshow that there is critical shear stress in VES fluid--the fluid yield stress, and it is relate to shear rate and breaking degree.At high shear rate, the VES fluid can break completely, but at low, it is very difficult to break. Moreover, the viscoelastic fluid in porous media is difficult to break, but increasing the amount of mutual solvent can improve the breaking effect of VES fluid which can reduce the damage to reservoirs.关键词
酸化/分流转向技术/VES自转向酸/破胶Key words
Acidizing, Diversion acidizing technology/ VES Self-diversion acid/ Gel breaking分类
能源科技引用本文复制引用
何春明,雷旭东,卢智慧,刘超..VES自转向酸破胶问题研究[J].钻井液与完井液,2011,28(4):60-63,4.基金项目
国家自然科学基金项目“缝洞型碳酸盐岩油气藏酸蚀蚓孔基础理论研究”(50774064). （50774064）
