High-resolution tomographic inversion with image-guided preconditioning and offset-dependent picking (2014)

PreviousNext No AccessSEG Technical Program Expanded Abstracts 2014High-resolution tomographic inversion with image-guided preconditioning and offset-dependent pickingAuthors: Guy Hilburn*Yang HeZengjia YanFrancis SherrillGuy Hilburn*TGS, Yang HeTGS, Zengjia YanTGS, and Francis SherrillTGShttps://doi.org/10.1190/segam2014-1219.1 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract A high-resolution approach to tomographic velocity model updating is described, combining advanced techniques to avoid simplifications which conventional tomography relies on, in order to yield geologically plausible models with greater accuracy and no significant increase in cost for time or effort. First, offset-dependent picking is implemented to better track gather events than traditional curvature-based picking, especially in situations demonstrating high anisotropy and complicated geology. Matching complex moveout can yield updates which more quickly flatten gathers and bring out fine detail in velocity models. To complement this, structure-oriented inversion preconditioning is applied, enforcing adherence to a stacked image's geological features. This helps avoid the violation of faults and layering which may arise using conventional updates, as well as generating a higher-resolution update which requires less postprocessing. Together, these refinements fit into a current tomographic flow to generate high-resolution velocity models without sacrifices regarding computation time or accuracy. Keywords: inversion, tomography, velocity, high-resolution, moveoutPermalink: https://doi.org/10.1190/segam2014-1219.1FiguresReferencesRelatedDetailsCited byImage-guided ray tracing and its applicationsEduardo Filpo, Jessé Costa, and Jörg Schleicher21 April 2021 | GEOPHYSICS, Vol. 86, No. 3Imaging the complex geology of the Faroe Shetland Basin, West of ShetlandsMatthew Hart, Guy Hilburn, Sandeep Bhamber, Jason Twigg, Rachel Ward, Steve Drewell, and Simon Baldock25 September 2020Phase only reflection full-waveform inversion for high resolution model updateJian Mao, James Sheng, and Guy Hilburn10 August 2019Resolving Celtic Sea imaging anomalies through a multistage FWI and tomography workflowGuy Hilburn, Matt Hart, and Jian Mao10 August 2019A case study for orthorhombic model building using 5D regularized full-azimuth land dataWei Gao, Zhiqiang Guo, Xuening Ma, and Gary Rodriguez27 August 2018Improved salt and subsalt model with common offset RTM tomography: A case history in deepwater, Gulf of MexicoJianshun Sheng, Seung Yoo, Cristina Reta-Tang, and Gary Rodriguez17 August 2017Enhanced structure and subsalt imaging of the Perdido Fold Belt offshore MexicoTefera Eshete and Katarina Rothe17 August 2017Salt interpretation for velocity model building using long offset multi-WAZ data: Improving the subsalt image in eastern Mississippi Canyon, Gulf of MexicoDaniel Chaikin, Henrik Roende, and Jason Kegel17 August 2017Horizon-based semblance picking tomography – a case study for velocity model building for Yucatan platform depth imagingXinyi Sun, Guy Hilburn, Yang He, and Vijay Singh17 August 2017Fracture detection and reservoir characterization through high-resolution orthorhombic tomography for unconventional playsGuy Hilburn, Amit Pendharkar, William Keller, René Mott, Jorge Peinado, Austin Jumper, and Victor Kriechbaum17 August 2017Anisotropy Complete Session17 August 2017Interpretation I Complete Session17 August 2017Seismic Processing: Migration I Complete Session17 August 2017Seismic Velocity Estimation Complete Session17 August 2017Uncertainty in orthorhombic model building: Analysis, mitigation, and validationGuy Hilburn, Yang He, and Bin Wang31 January 2017 | The Leading Edge, Vol. 36, No. 2High-resolution model building with multistage full-waveform inversion for narrow-azimuth acquisition dataJian Mao, James Sheng, Matt Hart, and Taejong Kim1 December 2016 | The Leading Edge, Vol. 35, No. 12High-resolution image-guided tomographic solution for improved imaging in ultrashallow water trench area of Gulf of MexicoSandip Chattopadhyay1 September 2016Seismic Velocity Estimation Complete Session1 September 2016High resolution velocity model building over the Hoop Fault Complex.M.J. 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Rodriguez19 August 2015High resolution tilted-orthorhombic tomographic inversion to improve velocity modeling and imaging: a case study of its impact on subsaltDhananjay Tiwari*, Guy Hilburn, Yang He, Yining Li, Francis Sherrill, and Zhiqiang Guo19 August 2015 SEG Technical Program Expanded Abstracts 2014ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2014 Pages: 5183 publication data© 2014 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 05 Aug 2014 CITATION INFORMATION Guy Hilburn*, Yang He, Zengjia Yan, and Francis Sherrill, (2014), "High-resolution tomographic inversion with image-guided preconditioning and offset-dependent picking," SEG Technical Program Expanded Abstracts : 4768-4772. https://doi.org/10.1190/segam2014-1219.1 Plain-Language Summary Keywordsinversiontomographyvelocityhigh-resolutionmoveoutPDF DownloadLoading ...