ORIGINAL RESEARCH article
Front. Earth Sci.
Sec. Solid Earth Geophysics
Volume 13 - 2025 | doi: 10.3389/feart.2025.1641487
This article is part of the Research TopicGeophysical Electromagnetic Exploration Theory, Technology and ApplicationView all 11 articles
The Response of Surface-borehole Azimuthal Induced Polarization in Axial Electrical Anisotropic Media
Provisionally accepted
- 1Yangtze University, Jingzhou, China
- 2Jianghan Branch, Sinopec Geophysical Corporation, Nanjing, China
- 3Sinopec Jianghan Petroleum Engineering Co Ltd, Wuhan, China
- 4China University of Geosciences, Wuhan, China
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The subsurface media in reality are often electrically anisotropic, thus it is necessary to investigate the response characteristics of surface-borehole Azimuthal induced polarization (SBIP) in principal axis anisotropic media. This paper presents a 3D forward modeling of SBIP in principal axis anisotropic media by incorporating tensor conductivity of anisotropic formations into the secondary potential method and equivalent resistivity theory, with numerical implementation through the finite element method. The accuracy of the forward algorithm was validated using an isotropic spherical model in borehole-surface configuration. By constructing multiple sets of three-dimensional (3D) principal-axis anisotropic models, we analyze the response characteristics of apparent resistivity and apparent polarizability under varying excitation azimuths. The simulation results demonstrate that the apparent resistivity and apparent polarizability exhibit the highest sensitivity to anisotropic variations along the Z-axis of the anomalous body, followed by the X-axis, while the Y-axis shows the least sensitivity. This study is not only helpful to improve the theoretical basis of azimuthal induced polarization method when the formation is electrically an-isotropic, but also has certain reference value for subsequent data processing and interpretation.
Keywords: surface-borehole induced polarization, axial electrical anisotropic media, Finite Element, Three-dimensional forward modeling, Apparent resistivity, apparent polarizability
Received: 05 Jun 2025; Accepted: 14 Oct 2025.
Copyright: © 2025 Zhou, Cheng, 张俊可, Chen, Wang, Mao and LIANGJUN. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Jun-Ke 张俊可, 2022720500@yangtzeu.edu.cn
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