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• W4291755254 abstract "PreviousNext No AccessSecond International Meeting for Applied Geoscience & EnergyQ-LSRTM using viscoacoustic VTI wave equation based on the nearly constant Q modelAuthors: Zhang Shan-ShanGu Bing-LuoLi Zhen-ChunZhang Shan-ShanChina University of Petroleum (East China)Search for more papers by this author, Gu Bing-LuoChina University of Petroleum (East China)Search for more papers by this author, and Li Zhen-ChunChina University of Petroleum (East China)Search for more papers by this authorhttps://doi.org/10.1190/image2022-3750237.1 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail AbstractIn the imaging process, ignoring the effects of attenuation and anisotropy will reduce the quality and resolution of the imaging profile. In this paper, we present a Q-compensated least-squares reverse time migration method in viscoacoustic VTI media (Q-VTI-LSRTM) using the pure qP-wave viscoacoustic VTI wave equation. Based on the adjoint theory, we derive the demigration operator, adjoint operator, and gradient-sensitive kernel. The proposed method can simultaneously handle the anisotropy and viscosity of subsurface media, and it’s free of the quasi-SV- wave artifacts. Moreover, the method can compensate for attenuation effects during the iterative process to avoid the instability caused by high-frequency noise. The numerical results show that the proposed method can compensate the amplitude loss and phase distortion caused by attenuation, and correct the inaccurate position of the reflection interfaces caused by anisotropy, which improves the accuracy and resolution of the imaging profile.Note: This paper was accepted into the Technical Program but was not presented at IMAGE 2022 in Houston, Texas.Keywords: LSRTM, attenuation and compensation, pure qP, -wave, VTI mediaPermalink: https://doi.org/10.1190/image2022-3750237.1FiguresReferencesRelatedDetails Second International Meeting for Applied Geoscience & EnergyISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2022 Pages: 3694 publication data© 2022 Published in electronic format with permission by the Society of Exploration Geophysicists and the American Association of Petroleum GeologistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 15 Aug 2022 CITATION INFORMATION Zhang Shan-Shan, Gu Bing-Luo, and Li Zhen-Chun, (2022), Q-LSRTM using viscoacoustic VTI wave equation based on the nearly constant Q model, SEG Technical Program Expanded Abstracts : 2729-2733. https://doi.org/10.1190/image2022-3750237.1 Plain-Language Summary KeywordsLSRTMattenuation and compensationpure qP-waveVTI mediaPDF DownloadLoading ..." @default.
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• W4291755254 date "2022-08-15" @default.
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• W4291755254 title "Q-LSRTM using viscoacoustic VTI wave equation based on the nearly constant Q model" @default.
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