Modeling Anisotropic Crosswell Magnetic Responses: A Magnetic-Source Integral Approach with Air-Effect Analysis
Source abstract
Abstract
Crosswell electromagnetic imaging serves as a pivotal method for analyzing the distribution of residual oil in oil and gas reservoirs, as well as for optimizing drilling strategies. Current challenges in crosswell electromagnetic (EM) modeling encompass large-scale discretization, with limited research addressing the effects of magnetic sources in anisotropic media or the influence of borehole air. This study introduces a novel iterative Fourier domain integral algorithm for three-dimensional (3D) magnetic-source magnetic simulation in an anisotropic medium. The proposed method employs the Fourier domain method and quasi-complete Fourier techniques to realize adaptive sampling and efficient 3D modeling. The accuracy and efficiency of the method are validated through models. Parametric analyses quantify the impact of several factors, including source depth, frequency, borehole air effects, and conductivity anisotropy on magnetic field components. For the dynamic monitoring of oil and gas reservoirs, the relationship among the magnetic field, frequency, and water saturation is discussed. Furthermore, comparative response differences between electric and magnetic sources are examined, thereby providing theoretical foundations for real-time EM imaging in anisotropic hydrocarbon reservoirs.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Geophysical and Geoelectrical Methods · Seismic Imaging and Inversion Techniques · Geophysical Methods and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Computer Science and Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, China
School of Computer and Information Engineering, Guilin University of Aerospace Technology, Guilin 541004, China
School of Geosciences and Info-physics, Central South University, Changsha 410083, China
Funding
Major projects of Xiangjiang Laboratory · National Natural Science Foundation of China · Natural Science Foundation of Sichuan Province of China—Youth Fund Project
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