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Keywords: pre-stack depth migration
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Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215666
... Time: 1:50 PM Presentation Start Time: 3:05 PM Location: 217B Presentation Type: Oral constraint grid ray path pre-stack depth migration information western china upstream oil & gas reservoir characterization travel time geological horizon velocity model annual meeting...
Proceedings Papers

Paper presented at the 2017 SEG International Exposition and Annual Meeting, September 24–29, 2017
Paper Number: SEG-2017-17667879
... ABSTRACT Fault shadows represent zones of the unreliable seismic imaging in the footwall of major extension fault. It occurs due to velocity variations associated with fault. Pre-stack depth migration with accurate enough velocity model can effectively resolve the problem, and the accurate...
Proceedings Papers

Paper presented at the 2013 SEG Annual Meeting, September 22–27, 2013
Paper Number: SEG-2013-0308
... migration, and pre-stack depth migration. The 5D interpolation yields considerable uplifts to the improvements of image qualities. The pre-stack gathers after the 5D interpolation are more suitable for azimuthal AVO and velocity analysis. upstream oil & gas mwni interpolation application...
Proceedings Papers

Paper presented at the 2013 SEG Annual Meeting, September 22–27, 2013
Paper Number: SEG-2013-0318
..." position from the actual cave position, two-way wave equation pre-stack depth migration using accurate velocity field effectively , can not only improve the imaging precision , but also increase the accuracy of the cave location. pre-stack depth migration reservoir characterization upstream oil...
Proceedings Papers

Paper presented at the 2012 SEG Annual Meeting, November 4–9, 2012
Paper Number: SEG-2012-1184
... Summary Shot based pre-stack depth migrations such as RTM are used to generate a partial image volume for each input shot gather. The conventional migrated image formed by summing together these partial images is often less than optimal in terms of signal to noise, and generally contains...
Proceedings Papers

Paper presented at the 2012 SEG Annual Meeting, November 4–9, 2012
Paper Number: SEG-2012-1343
... the regional structural framework in this area. In this paper we present a case history of some recent processing that resulted in high quality pre-stack depth migration (PSDM) seismic images from anisotropic VTI PSDM and a geologically-correlated velocity model. reflector migration tomography pre...
Proceedings Papers

Paper presented at the 2011 SEG Annual Meeting, September 18–23, 2011
Paper Number: SEG-2011-1192
... cavities, we must determine the accurate position and the real shape of the caves. First of all, we must confirm the real spatial position of the caves. In order to do this, we need a good migrated seismic data. In theory, having a more accurate velocity field enables pre-stack depth migration to obtain...
Proceedings Papers

Paper presented at the 2010 SEG Annual Meeting, October 17–22, 2010
Paper Number: SEG-2010-3308
... included Kirchhoff pre-stack depth migration and 1D velocity updates. Subsequent reprocessing efforts in 2007 included SRME for demultiple, tomography for velocity updates, salt and carbonate layer velocity interpretation and Wave Equation pre-stack depth migration in addition to Kirchhoff pre-stack depth...
Proceedings Papers

Paper presented at the 2008 SEG Annual Meeting, November 9–14, 2008
Paper Number: SEG-2008-3675
... ABSTRACT South Louisiana is a proven province with billions barrels of oil production in the past, many discovered a few decades ago with non-seismic methods or with simple seismic 2D and 3D time imaging techniques. 3D pre-stack depth migration has been developed and successfully used...
Proceedings Papers

Paper presented at the 2006 SEG Annual Meeting, October 1–6, 2006
Paper Number: SEG-2006-0184
... algorithm is able to construct accurate first arrival traveltimes in any complicated 3D TTI model that contains a large velocity gradient and an arbitrary orientation of its axis of symmetry. This algorithm can be straightforwardly applied to any 3D Kirchhoff pre-stack depth migration and anisotropic...
Proceedings Papers

Paper presented at the 2006 SEG Annual Meeting, October 1–6, 2006
Paper Number: SEG-2006-0510
... ABSTRACT An offshore West Africa seismic reservoir characterization study for an oil field appraisal using both pre-stack time and pre-stack depth migration data is presented. The known hydrocarbon seismic indicators of the region are first picked on the conventional pre-stack time migration...
Proceedings Papers

Paper presented at the 2006 SEG Annual Meeting, October 1–6, 2006
Paper Number: SEG-2006-0539
... Summary The deepwater Pompano field is located in Mississippi Canyon in the Gulf of Mexico. Two major salt bodies (Pompano and Lexington) are located in the study area of approximately 27 Outer Continental Shelf blocks. Many passes of pre-stack depth migrations had been applied in the past few...
Proceedings Papers

Paper presented at the 2006 SEG Annual Meeting, October 1–6, 2006
Paper Number: SEG-2006-3340
... pre-stack depth migration and reflection tomography. shallow velocity model reflection tomography imaging initial velocity model seismic data refraction tomography static correction trinidad upstream oil & gas malaysia velocity model building reservoir characterization...
Proceedings Papers

Paper presented at the 2006 SEG Annual Meeting, October 1–6, 2006
Paper Number: SEG-2006-3006
... interval velocity common-reflection-surface stack nils-alexander müller aperture velocity model reservoir characterization application geophysics correction pre-stack depth migration Elimination of the spread-length bias in the Common-Reflection-Surface stack Nils-Alexander Mu¨ller, Geophysical...
Proceedings Papers

Paper presented at the 2005 SEG Annual Meeting, November 6–11, 2005
Paper Number: SEG-2005-1981
... ABSTRACT Pre-stack depth migration (Pre-SDM) is essential for seismic exploration in structured zones with strong velocity variations, such as the Gulf of Mexico (GOM) and the Gulf of Guinea (GOG).In such areas, where seismic targets are commonly located below intrusive salt bodies...
Proceedings Papers

Paper presented at the 2005 SEG Annual Meeting, November 6–11, 2005
Paper Number: SEG-2005-2253
... ABSTRACT Obtaining an accurate interval velocity model is fundamental to successfully imaging complex geologies by using pre-stack depth migrations. However, the more complex the geology, the more difficult it is to find an accurate velocity model. A practical and fast approach is developed...
Proceedings Papers

Paper presented at the 2005 SEG Annual Meeting, November 6–11, 2005
Paper Number: SEG-2005-0460
... Summary Since 2002, Kerr-McGee has been using regional (several hundred OCS blocks) 3D pre-stack depth migrations for exploration in Northeast Garden Banks, located in the deepwater Gulf of Mexico (Figure 1). The advances of prestack depth imaging technology, as well as the experience...
Proceedings Papers

Paper presented at the 2005 SEG Annual Meeting, November 6–11, 2005
Paper Number: SEG-2005-2025
... duplex wave migration duplex wave reservoir characterization wave mode upstream oil & gas pre-stack depth migration lailly boundary original interpretation salt flank prismatic reflection migration Migration of Duplex Waves Naum Marmalyevskyy, Yury Roganov and Zinovy Gornyak, Ukrainian...
Proceedings Papers

Paper presented at the 2004 SEG Annual Meeting, October 10–15, 2004
Paper Number: SEG-2004-0472
...” reservoir model. Over the last several years we have successfully implemented pre-stack depth migration, 4C-OBC acquisition and processing, and surface-tow 4D. Results from these technologies are being used to shape the longer-term (20+ yrs) seismic strategy of the development. A long-term evaluation of 4D...
Proceedings Papers

Paper presented at the 2004 SEG Annual Meeting, October 10–15, 2004
Paper Number: SEG-2004-0845
... and the processing include imaging through hitherto poorly-imaged mud volcano features, as well as reduced structural uncertainty and better ties to well control. caspian towed streamer ob survey kirchhoff pre-stack depth migration migration acquisition interpretation westerngeco mueller depth...

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