Simulation of Rock Complex Resistivity Using an Inversion Method  

作　　者：Yu Tang Jingcun Yu Benyu Su Zhixiong Li 

机构地区：[1]School of Resources and Geosciences,China University of Mining and Technology,Xuzhou,221116,China [2]Faculty of Mechanical Engineering,Opole University of Technology,Opole,45-758,Poland [3]Key Laboratory of Coal Resources Exploration and Comprehensive Utilization,Ministry of Natural Resources,Xi’an,710021,China

出　　处：《Fluid Dynamics & Materials Processing》2022年第3期679-688,共10页流体力学与材料加工（英文）

基　　金：This research was funded by the National Natural Science Foundation under Grant No.[41974151];by the Jiangsu Province Natural Science Foundation under Grant No.[BK20181360];by the Major Scientific and Technological Innovation Project of Shandong Province of China under Grant No.[2019JZZY010820];by the Shaanxi Province Science and Technology Innovation Guidance Special No.[2020CGHJ-005].

摘　　要：The complex resistivity of coal and related rocks contains abundant physical property information,which can be indirectly used to study the lithology and microstructure of these materials.These aspects are closely related to the fluids inside the considered coal rocks,such as gas,water and coalbed methane.In the present analysis,considering different lithological structures,and using the Cole-Cole model,a forward simulation method is used to study different physical parameters such as the zero-frequency resistivity,the polarizability,the relaxation time,and the frequency correlation coefficient.Moreover,using a least square technique,a complex resistivity“inversion”algorithm is written.The comparison of the initial model parameters and those obtained after inversion is used to verify the stability and accuracy of such approach.The method is finally applied to primary-structure coal considered as the experimental sample for complex resistivity measurements.

关 键 词：Complex resistivity zero frequency resistivity POLARIZABILITY frequency correlation coefficient relaxation time inversion fitting least square method 

分 类 号：P61[天文地球—矿床学]