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• W2328319920 abstract "PreviousNext No AccessSEG Technical Program Expanded Abstracts 2010Blended source imaging by amplitude encodingAuthors: Jeff GodwinPaul SavaJeff GodwinCenter for Wave Phenomena, Colorado School of MinesSearch for more papers by this author and Paul SavaCenter for Wave Phenomena, Colorado School of MinesSearch for more papers by this authorhttps://doi.org/10.1190/1.3513495 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract The computational cost of conventional imaging is large for today's wide‐azimuth seismic surveys. One strategy to reduce the overall cost of seismic imaging is to migrate with multiple shot‐gathers at once, a technique which is known as blended source imaging. Blended source imaging trades the reduced cost of imaging with the presence of artifacts (cross‐talk) in the image. We show that a theoretical framework using a matrix representation of the imaging process adequately describes conventional, and blended source imaging. Furthermore, the matrix representation predicts both the quantity and strength of cross‐talk artifacts prior to imaging, thus allowing us to decide a priori the trade off between cross‐talk and speed. By exploiting our theoretical framework, we are able to design an amplitude encoding scheme, referred to as Truncated Singular Vector (TSV), that trades a significantly reduced cost of imaging with spatial resolution and cross‐talk noise. The TSV encoding allows us to reduce the cost of imaging by at least an order of magnitude relative to conventional shot‐record migration. Overall, we provide a framework for finding blended source encoding schemes, that produce good quality images at lower computational cost.Permalink: https://doi.org/10.1190/1.3513495FiguresReferencesRelatedDetailsCited byAn efficient super-virtual shot encoding scheme for multisource reverse time migrationXiaofeng Jia, Wenyang Chen, and Bin Chen23 November 2020 | GEOPHYSICS, Vol. 85, No. 6Full-waveform inversion with multisource frequency selection of marine streamer data5 June 2018 | Geophysical Prospecting, Vol. 66, No. 7Least-squares reverse time migration with adaptive moment estimation methodDan Wu, Qun Li, Xiangyang Zhang, Jinnuo Li, and Haili Wu27 August 2018Efficient amplitude encoding least-squares reverse time migration using cosine basis29 March 2016 | Geophysical Prospecting, Vol. 64, No. 6Reduction of crosstalk in blended-shot migrationJörg Schleicher, Jessé C. Costa, and Amélia Novais22 December 2014 | GEOPHYSICS, Vol. 80, No. 1A comparison of shot encoding schemes applied to the Full Waveform Inversion problemAlan A. V. B. Souza, Andre Bulcão, Bruno P. Dias, Djalma M. S. Filho, Fernanda F. Farias, Gustavo C. Alves, Luiz A. Santos, Ricardo F. C. C. da Cruz, and Felipe P. Loureiro9 January 2014Blended-record imaging: investigations on optimization and possible applicationsDaniel Carvalho Rocha Junior and Paul Sava9 January 2014Reduction of crosstalk in blended-shot migrationAmélia Novais, Jörg Schleicher, and Jessé C. Costa9 January 2014Multisource least-squares extended reverse time migration with preconditioning guided gradient methodYujin Liu, William W. Symes, and Zhenchun Li19 August 2013Shot encoding with random projectionsLudwig Schmidt, Piotr Indyk, Chaohui Chen, Amik St. -Cyr, and Detlef Hohl19 August 2013Multisource least-squares migration of marine streamer and land data with frequency-division encoding22 May 2012 | Geophysical Prospecting, Vol. 60, No. 4Encoded simultaneous source full‐wavefield inversion for spectrally shaped marine streamer dataPartha Routh, Jerry Krebs, Spyros Lazaratos, Anatoly Baumstein, Sunwoong Lee, Young Ho Cha, Ivan Chikichev, Nathan Downey, Dave Hinkley, and John Anderson8 August 2011Frequency grouping coding scheme for blended source imagingJiangtao Hu, Xiongwen Wang, Huazhong Wang, Lixin Tian, and Donghong Zhou8 August 2011 SEG Technical Program Expanded Abstracts 2010ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2010 Pages: 4453 publication data© 2010 Copyright © 2010 Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 21 Oct 2010 CITATION INFORMATION Jeff Godwin and Paul Sava, (2010), Blended source imaging by amplitude encoding, SEG Technical Program Expanded Abstracts : 3125-3129. https://doi.org/10.1190/1.3513495 Plain-Language Summary PDF DownloadLoading ..." @default.
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