A demigration-based reflection full-waveform inversion workflow (2018)

PreviousNext No AccessSEG Technical Program Expanded Abstracts 2018A demigration-based reflection full-waveform inversion workflowAuthors: Ping WangZhigang ZhangZhiyuan WeiRongxin HuangPing WangCGG, Zhigang ZhangCGG, Zhiyuan WeiCGG, and Rongxin HuangCGGhttps://doi.org/10.1190/segam2018-2997404.1 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Reflection FWI is effective at providing low-wavenumber velocity updates for deep areas beyond the penetration depth of diving waves and significantly improves seismic imaging. However, the tomographic term of the FWI gradient that is good for low-wavenumber velocity updates can be contaminated by the stronger high-wavenumber migration term. We present a reflection FWI workflow that is based on Born modeling to explicitly generate the tomographic term and thus is minimally impacted by migration contamination. In addition, we propose to use a set of partial stacks as reflectivity models for Born modeling to reduce the risks of cycle-skipping and incorrect update sign and to use a traveltime cost function to mitigate the negative impact from amplitude mismatch between input data and modeled synthetic data. Finally, we demonstrate the benefit and effectiveness of our approach using a field data set from the Gulf of Mexico. Presentation Date: Tuesday, October 16, 2018 Start Time: 1:50:00 PM Location: 207C (Anaheim Convention Center) Presentation Type: Oral Keywords: inversion, reflection, subsalt, scattering, modelingPermalink: https://doi.org/10.1190/segam2018-2997404.1FiguresReferencesRelatedDetailsCited byAnalysis of the impact of demigration on traveltime-based reflection full-waveform inversionHong Liang, Houzhu (James) Zhang, and Hongwei Liu15 August 2022Shear-wave velocity update using PS reflection FWI for imaging beneath complex gas cloudsMin Wang, Yi Xie, Peipei Deng, Jit Heang Tan, Shivaji Maitra, Matthew Camm, N. Fitri S. Zainal, Wai Hoong Tang, M. Nasrul B. M. Isa, and A. Aziz B. Muhamad1 September 2021Reduced subsalt reservoir structural uncertainty and improved amplitude characterization through FWI and LSRTMAfolabi Babalola, Douglas Rodenberger, Arpad Ozsdolay, Mandy Wong, Olga Rodina, Juan Wang, Ritu Sarker, Vicente Oropeza Bacci, Edward Townend, Hao Shen, Chanjuan Sun, Medha Bhargava, and Nicolas Chazalnoel1 September 2021A reflection-based efficient wavefield inversionChao Song and Tariq Alkhalifah1 July 2021 | GEOPHYSICS, Vol. 86, No. 4Efficient reflection waveform inversion using a locally normalized zero‐lag correlative objective function15 September 2020 | Geophysical Prospecting, Vol. 68, No. 9A review on reflection-waveform inversion18 March 2020 | Petroleum Science, Vol. 17, No. 2Reflection-Waveform Inversion Regularized with Structure-Oriented Smoothing Shaping10 July 2019 | Pure and Applied Geophysics, Vol. 176, No. 12Adaptive quadratic Wasserstein full-waveform inversionDiancheng Wang and Ping Wang10 August 2019Phase only reflection full-waveform inversion for high resolution model updateJian Mao, James Sheng, and Guy Hilburn10 August 2019Extraction of the tomography mode with nonstationary smoothing for full-waveform inversionGang Yao, Nuno V. da Silva, Vladimir Kazei, Di Wu, and Chenhao Yang24 May 2019 | GEOPHYSICS, Vol. 84, No. 4Assisting salt model building with reflection full-waveform inversionAdriano Gomes, Joe Peterson, Serife Bitlis, Chengliang Fan, and Robert Buehring1 April 2019 | Interpretation, Vol. 7, No. 2Full-waveform inversion for salt: A coming of agePing Wang, Zhigang Zhang, Jiawei Mei, Feng Lin, and Rongxin Huang28 February 2019 | The Leading Edge, Vol. 38, No. 3 SEG Technical Program Expanded Abstracts 2018ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2018 Pages: 5520 publication data© 2018 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 27 Aug 2018 CITATION INFORMATION Ping Wang, Zhigang Zhang, Zhiyuan Wei, and Rongxin Huang, (2018), "A demigration-based reflection full-waveform inversion workflow," SEG Technical Program Expanded Abstracts : 1138-1142. https://doi.org/10.1190/segam2018-2997404.1 Plain-Language Summary KeywordsinversionreflectionsubsaltscatteringmodelingPDF DownloadLoading ...