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3D true-amplitude anisotropic elastic Gaussian beam depth migration of 3D irregular data

M.I. PROTASOV1 ,  V.A. TCHEVERDA1 ,  A.P. PRAVDUHIN2
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1 Institute of Petroleum Geology and Geophysics,3 Koptyug Street, Novosibirsk 630090, Russia.,
2 INGEOSERVICE, Respubliki Street, Bldg. 211, Tyumen 625019, Russia.,
JSE 2019, 28(2), 121–146;
Submitted: 9 June 2025 | Revised: 9 June 2025 | Accepted: 9 June 2025 | Published: 9 June 2025
© 2025 by the Authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution -Noncommercial 4.0 International License (CC-by the license) ( https://creativecommons.org/licenses/by-nc/4.0/ )
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Abstract

Protasov, M.I., Tcheverda, V.A. and Pravduhin, A.P., 2019. 3D true-amplitude anisotropic elastic Gaussian beam depth migration of 3D irregular data. Journal of Seismic Exploration, 28: 121-146. True amplitude seismic migration is the procedure, which provides not only the localization of geological objects but also the restoration of their so-called 'reflectivity'. This characteristic gives very important quantitative additional information about elastic parameters of the objects of interest. The paper addresses 3D seismic depth true- amplitude migration of 3D irregular data in anisotropic media based on beam decomposition of the data. The main objective is the development of the imaging procedure suitable for anisotropic media and handling 3D irregular seismic data without any preliminary regularization. The key components providing the desired image are elastic anisotropic Gaussian beams. Depending on the choice of the beam (quasi P or quasi S) we have PP- or PS-images. Results of synthetic and real data processing are presented and discussed.

Keywords
3D imaging
Gaussian beams
anisotropy
irregular multicomponent data
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Journal of Seismic Exploration, Electronic ISSN: 0963-0651 Print ISSN: 0963-0651, Published by AccScience Publishing
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