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ORIGINAL RESEARCH article

Front. Earth Sci.
Sec. Solid Earth Geophysics
Volume 13 - 2025 | doi: 10.3389/feart.2025.1506238
This article is part of the Research Topic Experimental and Numerical Simulations of Rock Physics View all 10 articles

Fast Forward Modeling and Response Analysis of Extra-Deep Azimuthal Resistivity Measurements in Complex Model

Provisionally accepted
Pan Zhang Pan Zhang 1Shaogui Deng Shaogui Deng 2*Xiyong Yuan Xiyong Yuan 2*Fen Liu Fen Liu 1*Weibiao Xie Weibiao Xie 1*
  • 1 China University of Petroleum Beijing, Karamay Campus, Karamay, China
  • 2 China University of Petroleum (East China), Dongying, Shandong Province, China

The final, formatted version of the article will be published soon.

    The Extra-Deep Azimuthal Resistivity Measurements (EDARM) tool, as an emerging technology, can effectively identify geological interfaces within a range of several tens of meters around the borehole, providing geological structures for directional drilling, and effectively improving reservoir encounter rates and enhancing oil and gas recovery rates. However, the signal is jointly affected by interfaces located both ahead of the drill bit and around the borehole, making it impossible to directly obtain the interface position from the signal. Considering the increased detection range of EDARM and the requirements for computational efficiency, this paper presents a 2.5-dimensional (2.5D) finite element method(FEM). By leveraging the symmetry of simulated signals in the spectral domain, the algorithm reduces computation time by 50%, significantly enhancing computational efficiency while preserving accuracy. During the geosteering process, fault and wedge models were simulated, and various feature parameters were extracted to assess their impact on the simulation outcomes of EDARM. The results show that both Look-around and Look-ahead modes exhibit sensitivity to changes in the angle of the geological interface. Crossplot analysis allows for effective identification of interface inclinations and the distances between the instrument and the geological interface. This recognition method is quick, intuitive, and yields reliable results.

    Keywords: Extra-deep azimuthal resistivity measurement1, 2.5D finite element Method2, Logging while drilling3, Boundary detection 4, Complex model 5

    Received: 04 Oct 2024; Accepted: 02 Jan 2025.

    Copyright: © 2025 Zhang, Deng, Yuan, Liu and Xie. 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:
    Shaogui Deng, China University of Petroleum (East China), Dongying, 257061, Shandong Province, China
    Xiyong Yuan, China University of Petroleum (East China), Dongying, 257061, Shandong Province, China
    Fen Liu, China University of Petroleum Beijing, Karamay Campus, Karamay, China
    Weibiao Xie, China University of Petroleum Beijing, Karamay Campus, Karamay, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.