不含金属矿物的饱和多孔介质激发极化机理与模型综述  

Review of induced polarization mechanisms and models in saturated porous media without metal minerals

作　　者：马铭[1,2] 赵建国[1,2] 毛玉蓉[3] MA Ming;ZHAO JianGuo;MAO YuRong(National Key Laboratory of Petroleum Resources and Engineering,China University of Petroleum(Beijing),Beijing 102249,China;Unconventional Petroleum Research Institute,China University of Petroleum(Beijing),Beijing 102249,China;Key Laboratory of Exploration Technologies for Oil and Gas Resources(Yangtze University),Ministry of Education,Wuhan 430100,China)

机构地区：[1]中国石油大学(北京)油气资源与工程全国重点实验室,北京102249 [2]中国石油大学(北京)非常规油气科学技术研究院,北京102249 [3]长江大学油气资源与勘探技术教育部重点实验室,武汉430100

出　　处：《地球物理学进展》2024年第1期305-318,共14页Progress in Geophysics

基　　金：国家自然科学基金联合基金重点项目(U20B2015);国家自然科学基金面上项目(41974120)联合资助.

摘　　要：实验室研究发现不含金属矿物的饱和多孔介质激发极化参数受岩石物理特性影响,建立岩心尺度的低频(<10^(6)Hz)复电导率与孔隙结构参数、流体属性等因素之间的定量关系对解释激发极化数据具有重要指导意义.然而,产生激发极化效应的原因还未形成统一的物理/化学过程认识,现有理论未能完全解释激发极化数据,激电参数与多孔介质结构参数之间的定量关系缺少深入的机理研究.为此,本文首先阐述了双电层理论和用以解释激发极化效应的机理,包括Stern层极化、膜极化、Maxwell-Wagner极化和动电效应等;其次,总结了现有激发极化模型研究的最新进展,包括等效电路模型、Stern层极化模型、膜极化模型、等效介质模型等.综述表明:(1)低频激发极化效应的微观机理仍未达成统一认知,在特定条件下,膜极化模型与Stern层极化模型都能解释低频激发极化数据;(2)特征弛豫时间受孔径或粒径控制仍存在争议.Laboratory research has found that the induced polarization parameters of saturated porous media without metal minerals are influenced by rock physical properties.Establishing a quantitative relationship between low-frequency complex conductivity(<10^(6) Hz)at the core scale and factors such as pore structure parameters and fluid properties are great guiding significance for interpreting induced polarization data.However,the cause of induced polarization effect has not yet formed a unified understanding of physical/chemical process,existing theories have not fully explained induced polarization data,and the quantitative relationship between induced polarization parameters and structural parameters of porous media lacks in-depth mechanism research.Therefore,this paper first elaborates on the electrical double layer theory and the mechanisms used to explain induced polarization effects,including Stern layer polarization,membrane polarization,Maxwell-Wagner polarization,and electrokinetic effects;Secondly,the latest developments in existing induced polarization models were summarized,including equivalent circuit models,Stern layer polarization models,membrane polarization models,and effective medium models;The review shows that:(1)there is still no unified understanding of the micro mechanism of low-frequency induced polarization effect,and both membrane polarization and Stern layer polarization models can explain low-frequency induced polarization data under specific conditions;(2)There is still controversy over whether the characteristic relaxation time is controlled by pore size or particle size.

关 键 词：激发极化 岩石物理 复电导率 激电参数 机理 

分 类 号：P631[天文地球—地质矿产勘探]