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- W3196573792 abstract "PreviousNext No AccessFirst International Meeting for Applied Geoscience & Energy Expanded AbstractsBorehole-consistent sparse-spike seismic deconvolution and frequency enhancementAuthors: Gabriel R. GelpiDaniel O. PerezDanilo R. VelisGabriel R. GelpiUniversidad Nacional de La PlataUniversidad de Buenos AiresSearch for more papers by this author, Daniel O. PerezUniversidad Nacional de La PlataUniversidad de Buenos AiresSearch for more papers by this author, and Danilo R. VelisUniversidad Nacional de La PlataSearch for more papers by this authorhttps://doi.org/10.1190/segam2021-3582957.1 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail AbstractOne issue that can be found when working with seismic data is the lack of temporal resolution, which complicates the geological interpretation. One way to alleviate this issue is by means of the so-called frequency enhancement techniques, whose main goal is to widen the data original bandwidth. Starting from a sparse reflectivity series obtained from well-log information, we first carry out a sparse-spike deconvolution of the observed seismic data trace-by-trace moving away from the well location. To this purpose, we use a warping function to modify iteratively each reflectivity until the resulting synthetic trace fits the observed data, just like in some welltying techniques. We then convolve the reflectivities with a suitable broadband wavelet to obtain seismic data with an increased time resolution. Lateral continuity is guaranteed by assuming that two contiguous reflectivities contain the same number of spikes with similar positions. We test the method on synthetic and field data. The results show that we can obtain high-resolution images with good lateral continuity that honor the observed data. One key aspect of the proposed technique is given by the fact that the resulting sparse-spike reflectivities and high-resolution images are consistent with the borehole information. Because of the aforementioned assumptions, the best results are expected for models with low-to-moderate structural complexity.Keywords: deconvolution, sparse, wellsPermalink: https://doi.org/10.1190/segam2021-3582957.1FiguresReferencesRelatedDetails First International Meeting for Applied Geoscience & Energy Expanded AbstractsISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2021 Pages: 3561 publication data© 2021 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished: 01 Sep 2021 CITATION INFORMATION Gabriel R. Gelpi, Daniel O. Perez, and Danilo R. Velis, (2021), Borehole-consistent sparse-spike seismic deconvolution and frequency enhancement, SEG Technical Program Expanded Abstracts : 3301-3305. https://doi.org/10.1190/segam2021-3582957.1 Plain-Language Summary KeywordsdeconvolutionsparsewellsPDF DownloadLoading ..." @default.
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- W3196573792 title "Borehole-consistent sparse-spike seismic deconvolution and frequency enhancement" @default.
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- W3196573792 doi "https://doi.org/10.1190/segam2021-3582957.1" @default.
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