测井技术2025，Vol.49Issue(2)：171-178,8.DOI:10.16489/j.issn.1004-1338.2025.02.004
基于LBM的二维岩石电频散特性研究
Study on Electrical Dispersion Characteristics of Two-Dimensional Rock Based on LBM
摘要
Abstract
In the process of oil and gas field exploration and development,the complex resistivity spectral logging technology utilizes the dispersion characteristics of rock impedance,which can more accurately distinguish oil,gas,and water layers.Currently,the study of rock complex resistivity dispersion stays in the macroscopic equivalent parameter model,and it is difficult to explain the mechanism of rock electric dispersion from the microscopic point of view.In this study,a mesoscopic model of rock electric dispersion is established based on the Lattice Boltzmann method(LBM),and the effects of external electric field frequency and rock porosity on the electric dispersion characteristics of rocks are discussed by simulating the complex resistivity dispersion response of two-dimensional pore channels at different frequencies based on the interfacial polarization theory.The simulation results show that the mesoscopic model can successfully reflect the motion law of ions in the porous medium under the external electric field,and at the same time,the larger the porosity of the rock,the more the valley of the imaginary part of the complex resistivity of the model response moves to the direction of increasing frequency,which is consistent with the experimental law of the actual rock electric frequency dispersion.The mesoscale model established by this research can be used for the study of the micro-mechanisms of the rock electric frequency dispersion,and provide theoretical basis for the application of complex resistivity logging technology in the exploration and development of oil and gas.关键词
岩石电频散/格子玻尔兹曼方法(LBM)/介观模型/多孔介质/频谱分析Key words
rock electrical frequency dispersion/Lattice Boltzmann method(LBM)/mesoscopic model/porous medium/spectrum analysis引用本文复制引用
石洪玮,柯式镇,张宇航,胡昊,罗虎,陶婕..基于LBM的二维岩石电频散特性研究[J].测井技术,2025,49(2):171-178,8.基金项目
国家自然科学基金项目"基于格子波尔兹曼法的岩石电频散模型及微观机理研究"(42074126) （42074126）
安徽省高校自然科学研究一般项目"基于FDTD与神经网络的随钻电阻率测井快速正演仿真方法研究"(KJ2021B02) （KJ2021B02）
