3D Forward Modeling and Analysis for Loop-Source Transient Electromagnetic Data Based on Finite-Volume Method in an Arbitrarily Anisotropy Earth

PreviousNext No AccessInternational Workshop on Gravity, Electrical & Magnetic Methods and Their Applications, Xi'an, China, 19–22 May 20193D forward modeling and analysis for loop-source transient electromagnetic data based on finite-volume method in an arbitrarily anisotropy earthAuthors: Yajun Liu*Hongzhu CaiXiangyun HuRonghua PengYajun Liu*China University of Geoscience, WuhanSearch for more papers by this author, Hongzhu CaiChina University of Geoscience, WuhanSearch for more papers by this author, Xiangyun HuChina University of Geoscience, WuhanSearch for more papers by this author, and Ronghua PengChina University of Geoscience, WuhanSearch for more papers by this authorhttps://doi.org/10.1190/GEM2019-069.1 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Electrical anisotropy of formations has been recognized by field and laboratory evidence for a long while. However, almost all of the interpretation of transient electromagnetic (TEM) data is based on the assumption of an isotropic earth medium which could cause misinterpretation in regions with significant electrical anisotropy. To investigate the influence of electrical anisotropy on loop-source TEM responses, we present a robust three dimensional (3D) finite-volume (FV) algorithm for simulating TEM responses in an arbitrarily anisotropic earth. The accuracy of our algorithm is validated against semi-analytic solutions of a 1-D layered anisotropic model. Finally, by numerical experiments for 3D models with different types of electrical anisotropy, we analyzed and summarized the patterns of influence of electrical anisotropy on TEM responses. Keywords: 3D, anisotropy, algorithmPermalink: https://doi.org/10.1190/GEM2019-069.1FiguresReferencesRelatedDetails International Workshop on Gravity, Electrical & Magnetic Methods and Their Applications, Xi'an, China, 19–22 May 2019ISSN (online):2159-6832Copyright: 2019 Pages: 471 publication data© 2019 Published in electronic format with permission by the Society of Exploration Geophysicists and the Chinese Geophysical SocietyPublisher:Society of Exploration Geophysicists HistoryPublished Online: 28 Sep 2019 CITATION INFORMATION Yajun Liu*, Hongzhu Cai, Xiangyun Hu, and Ronghua Peng, (2019), "3D forward modeling and analysis for loop-source transient electromagnetic data based on finite-volume method in an arbitrarily anisotropy earth," SEG Global Meeting Abstracts : 272-275. https://doi.org/10.1190/GEM2019-069.1 Plain-Language Summary Keywords3DanisotropyalgorithmPDF DownloadLoading ...