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Modelling low velocities in carbonate karst zones and improving sub-karst images in the Gulf of Mexico

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May 11, 2011
Author: TGS
Filed Under: EAGE
A velocity anomaly zone with high contrasts and small wave length variations is often a challenge for conventional depth imaging. It requires model.

Horizon and fault constrained tomography to model fault induced velocity discontinuities in the hoop fault complex area

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May 9, 2011
Author: TGS
Filed Under: EAGE
We present a case study that uses different methods of addressing a sharp velocity contrast across a major fault boundary in the southwestern Barents Sea..

Automated RTM-based DIT scans for salt interpretation and model building

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May 2, 2011
Author: TGS
Filed Under: EAGE
Reverse Time Migration (RTM) based Delayed Imaging Time (DIT) scans have been used routinely in production to update velocity models in subsalt or low.