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7th International Conference & Exposition on Petroleum Geophysics

Use of Synthetic CMP Gathers for Velocity Guidance in Sub Basalt Seismic Imaging Problem: A Case Study of KG Basin

Published in GEOHORIZONS - 2008

A.K.Rao, ONGC Ltd., A.K.Srivastav*, ONGC Ltd., P.L.N. Sarma, ONGC Ltd, & R.L.Basak, ONGC

Abstract


A combined approach in time domain consisting of data driven velocity determinations integrated with model based strategies was successfully implemented in sub basalt seismic imaging in an onshore area of Krishna Godavari Basin. A forward acoustic modeling was used to verify the different geological hypothesis prior to application in actual recorded seismic data. The synthetic gathers were generated using the seismo-geological model and processed. The implemented procedures in synthetic gathers for processing facilitates the processing of the actual seismic data by allowing existing geological knowledge to complement data-driven velocity determinations.

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