煤矿安全2019，Vol.50Issue(11)：1-5,5.DOI:10.13347/j.cnki.mkaq.2019.11.001
基于表面活性剂解除水锁效应的压裂液性能研究
Study on Performance of Fracturing Fluid Based on Surfactant Releasing Water Locking Effect
摘要
Abstract
In order to solve the problem of water locking effect in the process of hydraulic fracturing in coal seam, we analyzed the influencing factors of water locking effect and selected the method of adding surfactant to the fracturing fluid to solve the water locking effect. The results show that the selected seven kinds of surfactants can improve the wetting property of the coal, and the higher the concentration of the surfactant, the smaller the contact angle, the better the wetting property and the more the surface tension reduced, until it tends to be flat; the adhesive work of seven kinds of surfactants is less than that of pure water; the capillary force between the fracturing fluid and the pore wall of the coal body is calculated based on Laplace formula, and by comparing the magnitude of σcosθ, the anionic surfactant SDBS is the best choice for reducing the capillary force.关键词
压裂液/水锁效应/表面活性剂/表面张力/接触角/毛细管力/水力压裂Key words
fracturing fluid/ water locking effect/ surfactant/ surface tension/ contact angle/ capillary force/ hydraulic fracturing分类
矿业与冶金引用本文复制引用
郑仰峰,翟成,倪冠华..基于表面活性剂解除水锁效应的压裂液性能研究[J].煤矿安全,2019,50(11):1-5,5.基金项目
国家自然科学基金面上资助项目(51774278) （51774278）
江苏省杰出青年基金资助项目(BK20170001) （BK20170001）
国家重大科学仪器设备开发专项任务资助项目(2013YQ17046309) （2013YQ17046309）
