应用数学和力学2012，Vol.33Issue(10)：1189-1198,10.DOI:10.3879/j.issn.1000-0887.2012.10.005
储层岩石周期性电渗流特性的微观机制
Microscopic Mechanism of Periodical Electroosmosis in Reservoir Rocks
摘要
Abstract
Based on the electric double layer (EDL) theory and the momentum equation governing the electroosmosis flow, an analytical solution to the periodical electroosmosis with a parallel straight capillary bundle model of reservoir rocks to reveal the microscopic mechanism of the electroosmotic flows in rocks was presented. The theory shows that both frequency dispersion characteristics of the macroscopic electroosmotic Darcy velocity in unsealed rocks and the electroosmotic pressure coefficient in sealed rocks depend on the porosity and electrochemical properties of reservoir rocks. The mathematical simulation indicates that the distribution of the periodical electroosmotic velocity is wave-like in the rock pore. The greater the porosity, the greater electroosmotic Darcy velocity and the smaller electroosmotic pressure coefficient are generated. The module value of the electroosmotic Darcy velocity and the electroosmotic pressure coefficient increase with the decreasing solution concentration or the increasing cation exchange capacity without affecting the phase of the electroosmotic Darcy velocity.关键词
储层岩石/周期性电渗流/微观机制/频散特性/数学模拟Key words
reservoir rock/ periodical electroosmosis/ microscopic mechanism/ frequency dispersion characteristic/ mathematical simulation分类
数理科学引用本文复制引用
陈辉,关继腾,房文静..储层岩石周期性电渗流特性的微观机制[J].应用数学和力学,2012,33(10):1189-1198,10.基金项目
国家自然科学基金资助项目(41174101) （41174101）
山东省自然科学基金资助项目(ZR2011DM002) （ZR2011DM002）
