Technical Library

Seismic Data, Processing, Technology, Well Data Reports and Industry and Trade Publication Features, from the Experts at TGS

Beam-based Interactive Imaging for Salt Interpretation and Salt Model Building

November 12, 2008
TGS
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It is well understood that accurate salt interpretation is critical to subsalt imaging. When reflections from the saltsediment boundaries are not.

Challenges in Time & Depth: Imaging the Eastern Delta OBC Survey, a Case History

November 10, 2008
TGS
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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

November 9, 2008
TGS
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Seismic anisotropy refers to seismic waves traveling with different velocity at different propagation angle, usually in consolidated, shale-prone areas.

A new multiple subtraction method using the attributes of predicted multiples

November 9, 2008
TGS
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Despite the development of excellent techniques for predicting multiples such as convolution based or wavefield extrapolation based approaches,.

Localized reverse time migration for salt model building

November 9, 2008
TGS
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Salt model building is a key process for successful subsalt imaging. In complex areas, Reverse Time Migration (RTM) provides better images than One-way.

Multiple Prediction by Wavefield Extrapolation in Common-P Domain

November 7, 2008
TGS
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Wavefield extrapolation (WFE) multiple prediction typically operates in common shot domain, and is very effective to predict complex multiples such as.

A Multi-Step Approach for Efficient Reverse-Time Migration

November 6, 2008
TGS
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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

November 2, 2008
TGS
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We present a case study of anisotropic model building and the resulting accuracy of event placement and improved image quality. Approximately 660 OCS.

Subsalt Velocity Update Using RTM-based DT Scan

November 2, 2008
TGS
tags icon SEG
Subsalt wave-equation based migration (WEM) scan is an effective way for subsalt velocity updating, and has become an industry standard practice; however,.