摘要
以储层岩石的串联毛管模型为基础,建立描述含水储层岩石时间域激发极化效应的数学模型.数值模拟储层岩石孔隙中离子的浓差极化效应和双电层形变效应.孔隙中浓差极化控制着激发极化随时间的变化,双电层形变不控制激发极化随时间的变化.浓差极化效应对激发极化极化率的贡献较小,双电层形变效应对激发极化极化率的贡献较大.激发极化充放电过程的快慢,主要取决于固液界面阳离子的吸附能力和岩石的孔隙结构.
Based on a microscope capillary model, a mathematical model for induced polarization of reservoir rock is obtained. Influences of concentration difference polarization and electric double-layer deformation on induced polarizability are studied numerically. It shows that induced polarization is governed by ion concentration difference polarization in capillary. Electric double- layer deformation has greater influence on total polarizability. Speed of charging and discharging in induced polarization depends mainly on cation exchange capacity and pore structure of rock.
出处
《计算物理》
EI
CSCD
北大核心
2012年第3期354-360,共7页
Chinese Journal of Computational Physics
基金
国家自然科学基金(40874064)资助项目
关键词
储层岩石
激发极化
毛管模型
数学模型
数值模拟
reservoir rock
induced polarization
capillary model
mathematical model
numerical simulation
