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- W2891723124 abstract "PreviousNext No AccessSEG Technical Program Expanded Abstracts 2018Fast nonrecursive 1D inversion by filtering acoustic-reflection dataAuthors: Evert SlobKees WapenaarSven TreitelEvert SlobTU DelftSearch for more papers by this author, Kees WapenaarTU DelftSearch for more papers by this author, and Sven TreitelTridekonSearch for more papers by this authorhttps://doi.org/10.1190/segam2018-2998538.1 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract We derive a fast acoustic inversion method for a piecewise homogeneous horizontally layered medium. The method obtains medium parameters from the reflection response. The method can be implemented to obtain the parameters on either side of a reflector at an arbitrary depth. Three processing steps lead to the inversion result. First, we solve a modified Marchenko type equation to obtain a focusing wavefield. We then apply wavefield continuation across a reflecting boundary to the focusing wavefield and retrieve the reflection coefficient of a reflector as a function of horizontal slowness. Finally, we use the reflection coefficient to obtain the velocities and the ratio of the densities above and below the reflector. Because the two-way traveltime difference of the primary reflection and the one above it becomes known during the process, the thickness of the layer above the reflector is also found. The method can be applied multiple times in different zones, or recursively in a target zone without having to solve more Marchenko type equations. The numerical example illustrates that the method works well on modeled data without the need for a priori model information. Presentation Date: Wednesday, October 17, 2018 Start Time: 1:50:00 PM Location: 211A (Anaheim Convention Center) Presentation Type: Oral Keywords: inversion, processing, acousticPermalink: https://doi.org/10.1190/segam2018-2998538.1FiguresReferencesRelatedDetailsCited byTutorial: unified 1D inversion of the acoustic reflection response17 March 2020 | Geophysical Prospecting, Vol. 68, No. 5 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 Evert Slob, Kees Wapenaar, and Sven Treitel, (2018), Fast nonrecursive 1D inversion by filtering acoustic-reflection data, SEG Technical Program Expanded Abstracts : 5043-5047. https://doi.org/10.1190/segam2018-2998538.1 Plain-Language Summary KeywordsinversionprocessingacousticPDF DownloadLoading ..." @default.
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