RTM noise attenuation and image enhancement using time-shift gathers

Abstract

PreviousNext No AccessSEG Technical Program Expanded Abstracts 2013RTM noise attenuation and image enhancement using time-shift gathersAuthors: Adel KhalilJames SunYu ZhangGordon PooleAdel KhalilCGG, James SunCGG, Yu ZhangCGG, and Gordon PooleCGGhttps://doi.org/10.1190/segam2013-0600.1 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Reverse time migration (RTM) has become a central tool in seismic imaging, especially in complex geologies where other migration methods fail. However, the way RTM is generally formulated introduces various types of artifacts, these include low-frequency noise in high velocity-contrast areas and shear-wave-like noise when anisotropy is included in the formulation. Using time-shift gathers from the extended imaging condition, we develop a method to effectively attenuate these artifacts and further enhance the final image by refocusing the migrated energy. We demonstrate the results of our method on both real and synthetic data sets. Permalink: https://doi.org/10.1190/segam2013-0600.1FiguresReferencesRelatedDetailsCited ByAdapting the residual dense network for seismic data denoising and upscalingRongqian Wang, Ruixuan Zhang, Chenglong Bao, Lingyun Qiu, and Dinghui Yang16 June 2022 | GEOPHYSICS, Vol. 87, No. 4A review on reflection-waveform inversion18 March 2020 | Petroleum Science, Vol. 17, No. 2Wavelet-domain reverse time migration image enhancement using inversion-based imaging conditionHong Liang and Houzhu Zhang12 August 2019 | GEOPHYSICS, Vol. 84, No. 5Separation of scales in FWI and RFWI: The first Fresnel zone seen from an angleFrançois Audebert and Daniel Ortiz-Rubio10 August 2019Increasing resolution of reverse-time migration using time-shift gathers9 March 2018 | Geophysical Prospecting, Vol. 66, No. 4Separation of Migration and Tomography Modes of Full-Waveform Inversion in the Plane Wave Domain7 February 2018 | Journal of Geophysical Research: Solid Earth, Vol. 123, No. 2Multiscattering inversion for low-model wavenumbersTariq Alkhalifah and Zedong Wu21 September 2016 | GEOPHYSICS, Vol. 81, No. 6Scattering angle-based filtering via extension in velocityVladimir Kazei, Ekkehart Tessmer, and Tariq Alkhalifah1 September 2016Common-image gathers using the excitation amplitude imaging conditionMahesh Kalita and Tariq Alkhalifah6 June 2016 | GEOPHYSICS, Vol. 81, No. 4Full-model wavenumber inversion: An emphasis on the appropriate wavenumber continuationTariq Alkhalifah6 April 2016 | GEOPHYSICS, Vol. 81, No. 3Multi-scattering inversion for low model wavenumbersTariq Alkhalifah and Zedong Wu19 August 2015A nonlinear inversion for the velocity background and perturbation modelsZedong Wu and Tariq Alkhalifah19 August 2015Efficient scattering angle filtering for Full waveform inversionTariq Alkhalifah19 August 2015RTM interpolation using time-shift gathersZhiguang Xue*, Sergey Fomel, and Junzhe Sun19 August 2015A nonlinear inversion for the velocity background and perturbation modelsZedong Wu* and Tariq Alkhalifah19 June 2015Conditioning the full-waveform inversion gradient to welcome anisotropyTariq Alkhalifah23 April 2015 | GEOPHYSICS, Vol. 80, No. 3Converted-wave beam migration with sparse sources or receivers19 January 2015 | Geophysical Prospecting, Vol. 63, No. 3Five ways to avoid storing source wavefield snapshots in 2D elastic prestack reverse time migrationBao D. Nguyen and George A. McMechan4 December 2014 | GEOPHYSICS, Vol. 80, No. 1Monofrequency waveform acquisition and inversion: A new paradigmTariq Alkhalifah5 August 2014Noise removal by migration of time-shift imagesSheng Xu, Feng Chen, Bing Tang, and Gilles Lambare2 May 2014 | GEOPHYSICS, Vol. 79, No. 3 SEG Technical Program Expanded Abstracts 2013ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2013 Pages: 5258 Publisher:Society of Exploration Geophysicists HistoryPublished: 19 Aug 2013 CITATION INFORMATION Adel Khalil, James Sun, Yu Zhang, and Gordon Poole, (2013), "RTM noise attenuation and image enhancement using time-shift gathers," SEG Technical Program Expanded Abstracts : 3789-3793. https://doi.org/10.1190/segam2013-0600.1 Plain-Language Summary PDF DownloadLoading ...