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- W2122241566 abstract "PreviousNext No AccessSEG Technical Program Expanded Abstracts 2011Layer‐stripping RTM based on wavefield redatumingAuthors: Bin WangJean JiKwangjin YoonJun CaiWill WhitesideChuck MasonZhiming LiBin WangTGSSearch for more papers by this author, Jean JiTGSSearch for more papers by this author, Kwangjin YoonTGSSearch for more papers by this author, Jun CaiTGSSearch for more papers by this author, Will WhitesideTGSSearch for more papers by this author, Chuck MasonTGSSearch for more papers by this author, and Zhiming LiTGSSearch for more papers by this authorhttps://doi.org/10.1190/1.3627877 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Tilted Transverse Isotropic (TTI) Reverse Time Migration (RTM) is routinely used for depth velocity model building. To improve the efficiency of RTM we have developed an approach called layer‐stripping RTM. For this method, we divide the model into two or three horizontal regions, then run RTM sequentially from top to bottom. The key ingredient for layer‐stripping RTM is wavefield redatuming. For the top region, we run a regular RTM and save the wavefield at the bottom of the top region. The saved, redatumed wavefields become the input for the subsequent, deeper RTM run. This method can dramatically reduce computation cost and improve the efficiency of model updates, because we do not need to repeat the shallow wavefield extrapolation, and the grid size of the deeper migrations can be increased. Additionally, we present solutions to practical issues such as the 3D data explosion problem of redatumed wavefields.Permalink: https://doi.org/10.1190/1.3627877FiguresReferencesRelatedDetailsCited ByTarget-oriented velocity analysis using Marchenko-redatumed dataConstantin Mildner, Filippo Broggini, Johan O. A. Robertsson, Dirk-Jan van Manen, and Stewart Greenhalgh27 January 2017 | GEOPHYSICS, Vol. 82, No. 2Subsalt velocity estimation by target-oriented wave-equation migration velocity analysis: A 3D field-data exampleYaxun Tang and Biondo Biondi18 January 2013 | GEOPHYSICS, Vol. 78, No. 1Iterative velocity model building using GPU based layer-stripping TTI RTMQien Ji, Sang Suh, and Bin Wang25 October 2012 SEG Technical Program Expanded Abstracts 2011ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2011 Pages: 4424 Publisher:Society of Exploration Geophysicists HistoryPublished: 25 May 2012 CITATION INFORMATION Bin Wang, Jean Ji, Kwangjin Yoon, Jun Cai, Will Whiteside, Chuck Mason, and Zhiming Li, (2011), Layer‐stripping RTM based on wavefield redatuming, SEG Technical Program Expanded Abstracts : 3280-3284. https://doi.org/10.1190/1.3627877 Plain-Language Summary PDF DownloadLoading ..." @default.
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