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15th Biennial International Conference SPG 2025

Improving the prospectivity of sub-basalt geology with elastic FWI imaging

Published in GEOHORIZONS - 2025

Jyoti Kumar 1, Matthew Hart 2 , Bent Kjølhamar 3 , Wonkee Kim 4 and Stuart Fairhead 2 , 1 TGS, Kuala Lumpur, 2 TGS, UK, 3 TGS, Oslo, 4 TGS, Houston

Abstract


In this paper we apply an acoustic and elastic FWI Imaging approach to the difficult problem of improving sub-basalt prospectivity. FWI Imaging is rapidly becoming a key deliverable in any imaging and velocity model building workflow. It can be seen as a non-linear leastsquares migration with the images being generated almost as a by-product of the model building approach. It allows for greater understanding of complex geology where typical migration images may have limitations and as such, is an invaluable guide for any interpretation work.

Keywords


Sub-basalt imaging, elastic FWI, FWI imaging, FWI

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