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• W1988257839 abstract "PreviousNext No AccessSEG Technical Program Expanded Abstracts 2004Practical and fast velocity analysis by multiple pre‐stack time migrationsAuthors: Chuanwen SunChangchun YangYiqing RenChuanwen SunUS Hayden Inc., 4707 Gladesdale Park Ln., Katy, TX 77450Institute of Geology and Geophysics, Chinese Academy of Science. Beijing, 100029. P. R of ChinaSearch for more papers by this author, Changchun YangUS Hayden Inc., 4707 Gladesdale Park Ln., Katy, TX 77450Institute of Geology and Geophysics, Chinese Academy of Science. Beijing, 100029. P. R of ChinaSearch for more papers by this author, and Yiqing RenUS Hayden Inc., 4707 Gladesdale Park Ln., Katy, TX 77450Institute of Geology and Geophysics, Chinese Academy of Science. Beijing, 100029. P. R of ChinaSearch for more papers by this authorhttps://doi.org/10.1190/1.1845228 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Obtaining an accurate velocity model is fundamental to successfully imaging complex geologies. A practical and fast approach is developed to update the migration velocity model for improved imaging. It is achieved by analyzing the multiple migration sections in the control lines by scanning the migration velocity from 80% to 120% of the best available velocity models. The different percentages of the velocity model produce the reasonable or unreasonable, better or worse, imaging sections with varying degrees of clarity. The correct migration velocity can be estimated by integrating the right percentages of the velocity model, which produces the greatest improvement. Applying this approach to the real data shows that the estimated migration velocity reliably converges to the correct velocity. The CPU time consuming of the multiple migrations is not expensive, because multiple travel‐time calculations for the different percentages of the velocity model are unnecessary.Permalink: https://doi.org/10.1190/1.1845228FiguresReferencesRelatedDetails SEG Technical Program Expanded Abstracts 2004ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2004 Pages: 2586 publication data© 2004 Copyright © 2004 Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished: 03 Jan 2005 CITATION INFORMATION Chuanwen Sun, Changchun Yang, and Yiqing Ren, (2004), Practical and fast velocity analysis by multiple pre‐stack time migrations, SEG Technical Program Expanded Abstracts : 2407-2410. https://doi.org/10.1190/1.1845228 Plain-Language Summary PDF DownloadLoading ..." @default.
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• W1988257839 title "Practical and fast velocity analysis by multiple pre‐stack time migrations" @default.
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