Maximizing the Value of 3D Seismic Vintage Through State of Art Land Depth Imaging and Quantitative Quality Controls - A Case Study at Yucal Placer Field, Venezuela

Seg Technical Program Expanded Abstracts(2015)

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PreviousNext No AccessSEG Technical Program Expanded Abstracts 2015Maximizing the value of 3D seismic vintage through state of art land depth imaging and quantitative quality controls - A case study at Yucal Placer field, VenezuelaAuthors: Yann Montico*Jean Patrick MascomèreXavier DuwattezYann Montico*TOTAL Exploration & ProductionSearch for more papers by this author, Jean Patrick MascomèreTOTAL Exploration & ProductionSearch for more papers by this author, and Xavier DuwattezMilad Bader, CGGSearch for more papers by this authorhttps://doi.org/10.1190/segam2015-5888204.1 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract The paper presents a land seismic depth imaging case history during which an advanced TTI PSDM velocity model building approach was applied on data acquired in 2003. The method includes an attempt to compensate for the lack of fold coverage in the shallowest part of the gathers along which seismic events cannot be used in reflection tomography. A state of art land time processing, including the building of an accurate near surface statics model, was applied to generate the input data to a TTI PSDM workflow. Then a detailed near surface velocity model derived from refraction tomography was combined with deeper RMS velocity to create an initial PSDM hybrid model. The depth imaging results, obtained from true topography, were validated through quantitative quality controls to ensure that PSDM angle substack volumes were reliable for future reservoir characterization. The study area, located onshore Venezuela, presents a relatively mild surface topography but has a complex subsurface geology which includes large lateral velocity variations induced by a NW-SE oriented thrust lying right above the main producing reservoirs. The applied workflow provided a better image quality against the legacy processing. It was seen by the operator as a last-chance to maximize the value of a twelve years old vintage data-set and in a lower oil price context it should eventually have a major impact on the field static reservoir modeling update. Keywords: TTI, amplitude, land, Kirchhoff, depth migrationPermalink: https://doi.org/10.1190/segam2015-5888204.1FiguresReferencesRelatedDetails SEG Technical Program Expanded Abstracts 2015ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2015 Pages: 5634 publication data© 2015 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 19 Aug 2015 CITATION INFORMATION Yann Montico*, Jean Patrick Mascomère, and Xavier Duwattez, (2015), "Maximizing the value of 3D seismic vintage through state of art land depth imaging and quantitative quality controls - A case study at Yucal Placer field, Venezuela," SEG Technical Program Expanded Abstracts : 5275-5279. https://doi.org/10.1190/segam2015-5888204.1 Plain-Language Summary KeywordsTTIamplitudelandKirchhoffdepth migrationPDF DownloadLoading ...
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amplitude,land
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