Elastic-parameter estimation by combining full-waveform inversion by model extension and target-oriented elastic inversion

Seg Technical Program Expanded Abstracts(2020)

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PreviousNext No AccessSEG Technical Program Expanded Abstracts 2020Elastic-parameter estimation by combining full-waveform inversion by model extension and target-oriented elastic inversionAuthors: Ettore BiondiGuillaume BarnierEttore BiondiStanford UniversitySearch for more papers by this author and Guillaume BarnierStanford UniversitySearch for more papers by this authorhttps://doi.org/10.1190/segam2020-3428395.1 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail AbstractWe combine two inversion techniques to achieve an accurate wave-equation-based elastic-parameter estimation workflow using pressure data. We first apply full-waveform inversion by model extension (FWIME), a robust model-building technique, which provides an accurate migration velocity so that flat angle-domain common-image gathers (ADCIGs) can be obtained. Secondly, we employ the retrieved migration velocity to perform a redatuming technique based on an extended least-squares migration process, which allows the reconstruction of elastic pressure data coming from a target area. These reconstructed data are finally employed within an elastic fullwaveform inversion (FWI) procedure to estimate the elastic parameters of the target area with a fraction of the computational cost of inverting the entire surface pressure data. We demonstrate the efficacy of this new workflow on elastic pressure data recorded on the Marmousi2 model and where the goal is the estimation of the elastic parameters of a gas reservoir.Presentation Date: Wednesday, October 14, 2020Session Start Time: 8:30 AMPresentation Time: 9:45 AMLocation: 361FPresentation Type: OralKeywords: inversion, elastic, datuming, reservoir characterizationPermalink: https://doi.org/10.1190/segam2020-3428395.1FiguresReferencesRelatedDetailsCited byTarget-oriented high-resolution elastic full-waveform inversion with an elastic redatuming methodYuanyuan Li and Tariq Alkhalifah13 July 2022 | GEOPHYSICS, Vol. 87, No. 5Target-Oriented Time-Lapse Elastic Full-Waveform Inversion Constrained by Deep Learning-Based Prior ModelIEEE Transactions on Geoscience and Remote Sensing, Vol. 60Target-oriented time-lapse elastic full-waveform inversion assisted by deep learning with prior informationYuanyuan Li, Andrey Bakulin, Philippe Nivlet, Robert Smith, and Tariq Alkhalifah1 September 2021 SEG Technical Program Expanded Abstracts 2020ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2020 Pages: 3887 publication data© 2020 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 30 Sep 2020 CITATION INFORMATION Ettore Biondi and Guillaume Barnier, (2020), "Elastic-parameter estimation by combining full-waveform inversion by model extension and target-oriented elastic inversion," SEG Technical Program Expanded Abstracts : 735-739. https://doi.org/10.1190/segam2020-3428395.1 Plain-Language Summary Keywordsinversionelasticdatumingreservoir characterizationPDF DownloadLoading ...
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estimation,model extension,elastic-parameter,full-waveform,target-oriented
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