It is well understood that accurate salt interpretation is critical to subsalt imaging. When reflections from the saltsediment boundaries are not.
Immediately offshore of the Mississippi Delta the geological setting conspires with numerous production installations to produce a unique set of problems.
Impacts of Seismic Anisotropy and Subsalt Velocity Updates in Imaging, Deepwater Gulf of Mexico
Seismic anisotropy refers to seismic waves traveling with different velocity at different propagation angle, usually in consolidated, shale-prone areas.
Despite the development of excellent techniques for predicting multiples such as convolution based or wavefield extrapolation based approaches,.
Salt model building is a key process for successful subsalt imaging. In complex areas, Reverse Time Migration (RTM) provides better images than One-way.
Wavefield extrapolation (WFE) multiple prediction typically operates in common shot domain, and is very effective to predict complex multiples such as.
Reverse-time migration (RTM) provides superior images in areas where there are steep salt flanks or other complex geologic structures. However, the high.
Enhanced Anisotropic Model Building Methodology and Pre-stack Depth Imaging in Deep Water Gulf Of Mexico: A case history
We present a case study of anisotropic model building and the resulting accuracy of event placement and improved image quality. Approximately 660 OCS.
Subsalt wave-equation based migration (WEM) scan is an effective way for subsalt velocity updating, and has become an industry standard practice; however,.