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- W2328151039 abstract "PreviousNext No AccessSEG Technical Program Expanded Abstracts 2011Resolution analysis for full wavefield inversion and its application to time‐lapseAuthors: Xiaolei SongAnatoly BaumsteinPartha RouthXiaolei SongThe University of Texas at AustinSearch for more papers by this author, Anatoly BaumsteinExxonMobil Upstream Research Company, Houston, Texas, U.S.A.Search for more papers by this author, and Partha RouthExxonMobil Upstream Research Company, Houston, Texas, U.S.A.Search for more papers by this authorhttps://doi.org/10.1190/1.3627731 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Full‐wavefield inversion (FWI) estimates a subsurface elastic model by iteratively minimizing the misfit between observed and simulated data. Resolution analysis provides a framework for understanding what parts of model are better constrained by the data. However, the conventional SVD (singular value decomposition) approach to computing the resolution matrix is prohibitively expensive for FWI. We tested an iterative method (Lanczos algorithm) for computing an approximation to the resolution matrix based on a simple 3‐layer model. We compared the results with the full SVD solution by ScaLAPACK. We find that after 150 iterations, the approximate resolution matrix agrees well with the full SVD solution. Then we applied Lanczos approach to 2D Time‐Lapse analysis based on the SEAM model. The analysis shows that the approximate resolution matrix matches the inversion result.Permalink: https://doi.org/10.1190/1.3627731FiguresReferencesRelatedDetailsCited ByTime-lapse pre-stack seismic data registration and inversion for CO 2 sequestration study at Cranfield2 April 2014 | Geophysical Prospecting, Vol. 62, No. 5References29 August 2013Full Wavefield Inversion of Time-Lapse Data for Improved Imaging and Reservoir CharacterizationPartha Routh, Gopal Palacharla, Ivan Chikichev, and Spyros Lazaratos25 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 Xiaolei Song, Anatoly Baumstein, and Partha Routh, (2011), Resolution analysis for full wavefield inversion and its application to time‐lapse, SEG Technical Program Expanded Abstracts : 2597-2602. https://doi.org/10.1190/1.3627731 Plain-Language Summary PDF DownloadLoading ..." @default.
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