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• W2746586648 abstract "PreviousNext No AccessSEG Technical Program Expanded Abstracts 2017Multiscale seismic-envelope inversion for salt structures using a new direct-envelope Fréchet derivativeAuthors: Ru-Shan WuGuoxin ChenRu-Shan WuUniversity of California–Santa CruzSearch for more papers by this author and Guoxin ChenUniversity of California–Santa Cruz and Zhejiang UniversitySearch for more papers by this authorhttps://doi.org/10.1190/segam2017-17634651.1 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract For strong-nonlinear FWI involved with salt structures or other strong-contrast structures, the standard envelope inversion does not work well. We introduce multi-scale window-averaged envelope (WAE) data and derive a new envelope Frechét derivative (sensitivity operator) based on energy pulse scattering physics without using the chain rule of differentiation. This new envelope Frechét derivative (EFD) does not depend on the weak nonlinearity assumption and can be applied to the case of strong-nonlinear inversion. In this paper we show the features of the new Frechét and its related adjoint source and gradient fields. Then the inversion results for the SEG 2D salt model is shown to prove the theory and method. Presentation Date: Thursday, September 28, 2017 Start Time: 11:00 AM Location: 361F Presentation Type: ORAL Keywords: full-waveform inversion, inversion, low frequency, nonlinear, acousticPermalink: https://doi.org/10.1190/segam2017-17634651.1FiguresReferencesRelatedDetailsCited byPhase-amplitude-based polarized direct envelope inversion in the time-frequency domainYong Hu, Ru-Shan Wu, Xingguo Huang, Yun Long, Yongzhong Xu, and Li-Guo Han25 February 2022 | GEOPHYSICS, Vol. 87, No. 3Elastic direct envelope inversion based on wave mode decomposition for multi-parameter reconstruction of strong-scattering mediaPetroleum Science, Vol. 66Skeletonized Wave-Equation Refraction Inversion With Autoencoded WaveformsIEEE Transactions on Geoscience and Remote Sensing, Vol. 59, No. 10Instantaneous-phase encoded direct envelope inversion in the time-frequency domain and the application to subsalt inversionYong Hu and Ru-Shan Wu30 September 2020Improved seismic envelope full-waveform inversion by adjoint source analysisKai Xiong, David Lumley, and Wei Zhou25 September 2020Regularized full-waveform inversion for large 3-D salt bodiesMahesh Kalita, Ahmad Riza Ghazali, Kefeng Xin, Farah Syazana Dzulkefli, and Tariq Alkhalifah10 August 2019Using FWI and deep learning to characterize velocity anomalies in crosswell seismic dataWenyuan Zhang and Robert Stewart10 August 2019Joint Multiscale Direct Envelope Inversion of Phase and Amplitude in the Time–Frequency DomainIEEE Transactions on Geoscience and Remote Sensing, Vol. 57, No. 7Multiscale Direct Envelope Inversion: Algorithm and Methodology for Application to the Salt Structure Inversion30 January 2019 | Earth and Space Science, Vol. 6, No. 1Source-independent seismic envelope inversion based on the direct envelope Fréchet derivativePan Zhang, Ru-Shan Wu, and Liguo Han1 October 2018 | GEOPHYSICS, Vol. 83, No. 6Multiscale direct-envelope inversion using wavenumber filtering based on reflection tomography for background velocity recovery of large-scale, strong-contrast mediaGuoxin Chen, Ru-Shan Wu, and Shengchang Chen27 August 2018Application of an envelope inversion and FWI workflow to frontier exploration in ArgentinaMark Roberts27 August 2018Direct envelope inversion and the inverse problem of Schrodinger impedance equationRu-Shan Wu27 August 2018Elastic wave reflection kernel analysis and traveltime inversion based on two-level mode decompositionJiubing Cheng and Tengfei Wang22 November 2017The nonlinear data functional and multiscale seismic envelope inversion: Algorithm and methodology for application to salt structure inversionGuoxin Chen, Ru-Shan Wu, and Shengchang Chen17 August 2017Full-Waveform Inversion II Complete Session17 August 2017 SEG Technical Program Expanded Abstracts 2017ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2017 Pages: 6093 publication data© 2017 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 17 Aug 2017 CITATION INFORMATION Ru-Shan Wu and Guoxin Chen, (2017), Multiscale seismic-envelope inversion for salt structures using a new direct-envelope Fréchet derivative, SEG Technical Program Expanded Abstracts : 1523-1527. https://doi.org/10.1190/segam2017-17634651.1 Plain-Language Summary Keywordsfull-waveform inversioninversionlow frequencynonlinearacousticPDF DownloadLoading ..." @default.
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