Can we correct for azimuth dependant variations of residual move-out in land WAZ context, using depth non-linear slope tomography? An imaging case history (2011)

PreviousNext No Access12th International Congress of the Brazilian Geophysical Society & EXPOGEF, Rio de Janeiro, Brazil, 15–18 August 2011Can we correct for azimuth dependant variations of residual move-out in land WAZ context, using depth non-linear slope tomography? An imaging case historyAuthors: Didier Lecerf*Jean-Luc BoelleJean-Philippe MontelSerge ZimineGilles LambaréPatrice GuillaumeJean-Paul TouréNicolas DeladerrièreXiaoming ZhangAnthony PrescottSylvain NavionAhmed BelmokhtarAbdeljebbar LadmekDidier Lecerf*CGGVeritas;, Jean-Luc BoelleTotal;, Jean-Philippe MontelCGGVeritas;, Serge ZimineCGGVeritas;, Gilles LambaréCGGVeritas;, Patrice GuillaumeCGGVeritas;, Jean-Paul TouréCGGVeritas;, Nicolas DeladerrièreCGGVeritas;, Xiaoming ZhangCGGVeritas;, Anthony PrescottCGGVeritas;, Sylvain NavionCGGVeritas;, Ahmed BelmokhtarSonatrach, and Abdeljebbar LadmekSonatrachhttps://doi.org/10.1190/sbgf2011-434 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract High-density wide azimuth (WAZ) land surface acquisitions have demonstrated superior imaging capabilities. Apart from the traditional poor signal-to-noise ratio of land data we face a new challenge: the necessity of reconciling the kinematics of the various azimuths. In this paper, we present an imaging case history involving WAZ non-linear slope tomography. Using surface information (kinematic invariants), velocity model updates are performed both in depth and time. We chose to start from an initial pre-stack time migrated (PreSTM) dataset. After applying a structurally consistent filtering to improve the S/N ratio on stacked data, we used a dense automated tool for dip picking. In parallel residual move-out (RMO) was computed on all azimuths simultaneously. Our case study demonstrates that WAZ non-linear slope tomography in the depth domain greatly improves the imaging of the structures when compared to the initial PreSTM result. We observe that even if tomography in the time domain significantly enhances imaging, it cannot successfully honor the kinematics of the various azimuths within the constraints of time imaging assumptions. On the contrary, WAZ non-linear slope tomography in the depth domain offers an efficient way to reconcile these kinematics, thus promoting the use of depth imaging when processing high-density WAZ data, even in the context of mild geological complexity. Keywords: tomography, azimuth, imaging, prestackPermalink: https://doi.org/10.1190/sbgf2011-434FiguresReferencesRelatedDetails 12th International Congress of the Brazilian Geophysical Society & EXPOGEF, Rio de Janeiro, Brazil, 15–18 August 2011ISSN (online):2159-6832Copyright: 2011 Pages: 2223 publication data© 2011 Published in electronic format with permission by the Brazilian Geophysical SocietyPublisher:Society of Exploration Geophysicists HistoryPublished: 13 Mar 2014 CITATION INFORMATION Didier Lecerf*, Jean-Luc Boelle, Jean-Philippe Montel, Serge Zimine, Gilles Lambaré, Patrice Guillaume, Jean-Paul Touré, Nicolas Deladerrière, Xiaoming Zhang, Anthony Prescott, Sylvain Navion, Ahmed Belmokhtar, and Abdeljebbar Ladmek, (2011), "Can we correct for azimuth dependant variations of residual move-out in land WAZ context, using depth non-linear slope tomography? An imaging case history," SEG Global Meeting Abstracts : 2092-2094. https://doi.org/10.1190/sbgf2011-434 Plain-Language Summary KeywordstomographyazimuthimagingprestackPDF DownloadLoading ...