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13th Biennial International Conference Kochi 2020

Handling near surface complexities of 3D seismic data of Jaisalmer basin using combination of various static solutions.

Published in GEOHORIZONS - 2020

Ponnam Srinath*, Om Prakash Meena, Ranbir Singh, ONGC

Abstract


Near surface complexities on land predominantly in sand dunes have been the toughest challenges in seismic data processing. Varying near surface degrades the seismic image in land, because of the distortions occurring to the body waves while passing through the complex near-surface. Complex near surface velocity variations introduce static issues which influence the accuracy of the resulting imaged time structure. The present workflow addresses the challenges and difficulties observed in the processing of the data acquired in sand dunes. The statics issues were dealt with the combination of Tomo statics and iterative Reflection residual statics.

Keywords


Sand dunes, Tomo statics, Iterative velocity analysis & residual statics, Regularization

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