Least-squares reverse time migration: towards true amplitude imaging and improving the resolution

Abstract

PreviousNext No AccessSEG Technical Program Expanded Abstracts 2012Least-squares reverse time migration: towards true amplitude imaging and improving the resolutionAuthors: S. DongJ. CaiM. GuoS. SuhZ. ZhangB. WangZ. LiS. DongTGS, J. CaiTGS, M. GuoTGS, S. SuhTGS, Z. ZhangTGS, B. WangTGS, and Z. LiTGShttps://doi.org/10.1190/segam2012-1488.1 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract A 3D inversion based Least-Squares Reverse Time Migration (LSRTM) technique was developed. The algorithm uses the RTM as the forward modeling and inversion engine to minimize the amplitude differences between the observed data and the synthetic modeled data. In turn, the final LSRTM will deliver the reflectivity model that will generate the true corresponding amplitude; the migration artifacts are suppressed as well since they are not contained in the observed field data. Compared with the initial RTM image, the LSRTM images from the synthetic data and field data examples show the improved amplitude response and higher resolution gained by suppressing migration artifacts and sharpening the subsurface reflectors' reflectivity. Permalink: https://doi.org/10.1190/segam2012-1488.1FiguresReferencesRelatedDetailsCited ByTrue-amplitude migration through regularized extended linearized waveform inversionEttore Biondi, Mark A. 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Shabelansky*, Alison Malcolm, Michael Fehler, and William L. Rodi5 August 2014A cross-correlation objective function for least-squares migration and visco-acoustic imagingGaurav Dutta, Mrinal Sinha*, and Gerard T. Schuster5 August 2014Least-Squares Reverse Time Migration in Visco-Acoustic Media10 April 2014 | Chinese Journal of Geophysics, Vol. 57, No. 1Migração Kirchhoff 2-D pós-empilhamento otimizada através do método dos mínimos quadradosPeterson Nogueira Santos, Reynam C. Pestana, Gary C. Aldunate, and Adriano W. G. dos Santos9 January 2014 SEG Technical Program Expanded Abstracts 2012ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2012 Pages: 4609 Publisher:Society of Exploration Geophysicists HistoryPublished: 25 Oct 2012 CITATION INFORMATION S. Dong, J. Cai, M. Guo, S. Suh, Z. Zhang, B. Wang, and Z. Li, (2012), "Least-squares reverse time migration: towards true amplitude imaging and improving the resolution," SEG Technical Program Expanded Abstracts : 1-5. https://doi.org/10.1190/segam2012-1488.1 Plain-Language Summary PDF DownloadLoading ...