Asymmetric apertures for 3D SRME: Practical aspects and opportunities

PreviousNext No AccessSecond International Meeting for Applied Geoscience & EnergyAsymmetric apertures for 3D SRME: Practical aspects and opportunitiesAuthors: Zhimei YanMassimiliano VassalloScott SlatonZhimei YanSchlumbergerSearch for more papers by this author, Massimiliano VassalloSchlumbergerSearch for more papers by this author, and Scott SlatonSchlumbergerSearch for more papers by this authorhttps://doi.org/10.1190/image2022-3750950.1 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract3D surface-related multiple elimination (SRME) is a data- driven approach that has proven very effective in predicting all orders of surface multiples. Typically, 3D SRME for a single seismic target trace requires hundreds of thousands of convolutions on potential downward reflection points (DRP) at the surface. For the method, surface aperture area and DRP spacing are two key parameters that directly determine the number of convolutions and, thus, the computational cost. In practice, they are also the key parameters in determining the model quality: a good multiple model prediction requires large enough surface aperture to include all the true surface downward reflection points (DRP) and fine DRP spacing to avoid stack aliasing. For seismic data recorded over complex geological environment, large apertures are frequently required to capture all surface multiples including diffraction multiples. In production, however, the choice of these parameter values is often dictated by budget and operational constraints instead of subsurface requirements, which can result in suboptimal multiple models. In all previous work, the aperture area is symmetric with respect to the midpoint of the target trace. In this work, we demonstrate that using automatically determined asymmetric apertures reduces the computation cost significantly without compromising the model quality compared to both symmetric variable aperture methods and typical constant apertures.Keywords: 3D SRME, asymmetric apertures, computation cost reduction, automatic parameter determinationPermalink: https://doi.org/10.1190/image2022-3750950.1FiguresReferencesRelatedDetails Second International Meeting for Applied Geoscience & EnergyISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2022 Pages: 3694 publication data© 2022 Published in electronic format with permission by the Society of Exploration Geophysicists and the American Association of Petroleum GeologistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 15 Aug 2022 CITATION INFORMATION Zhimei Yan, Massimiliano Vassallo, and Scott Slaton, (2022), "Asymmetric apertures for 3D SRME: Practical aspects and opportunities," SEG Technical Program Expanded Abstracts : 2972-2976. https://doi.org/10.1190/image2022-3750950.1 Plain-Language Summary Keywords3D SRMEasymmetric aperturescomputation cost reductionautomatic parameter determinationPDF DownloadLoading ...