编号：CDUT-2022-24

标题：Surface Conduction Model for Fractal Porous Media

入藏号：WOS:000560371700024

中国科学院文献情报中心期刊分区：地学1区/TOP

本校作者：王红涛

来源出版物：GEOPHYSICAL RESEARCH LETTERS 卷：47 期：10   文献号：e2020GL087553

出版年：2020

第一地址：成都理工大学

关键词：阿尔奇公式；粘土；界面导电；渗透率

代表图：

摘要：The electrical conductivity of natural water-saturated porous materials has two contributions, one associated with conduction in the pore network and a second one associated with the electrical double layer coating the surface of the mineral grains, and called surface conductivity. We model the effect of material texture on surface conductivity based on fractal theory. We demonstrate that surface conductivity obeys a power-law dependence (that we called surface Archie's law) on the specific surface area. The power exponent is theoretically related to the porosity exponent entering Archie's law and to the fractal dimension of the pore network. A permeability model is derived by combining the new surface Archie's law and the Kozeny-Carman model. We show that our model is consistent with both numerical finite element simulations on synthetic porous media and experimental data.

文章链接地址：https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2020GL087553