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Abstract

C001 Solving Short-Wavelength Velocity Variations with High-Resolution Hybrid Grid Tomography M. Dazley* (WesternGeco Ltd) P.J. Whitfield (WesternGeco Ltd.) B. Santos-Luis (WesternGeco Ltd) A. Sellars (WesternGeco Ltd) P. Szabo (WesternGeco Ltd) F. Nieuwland (Total E & P Nederland B.V.) & L. Lemaistre (Total S.A.) SUMMARY Short wavelength velocity variations are observed within the Cretaceous chalk in some areas of the Southern North Sea. Depth imaging is required because of the strong lateral velocity variations but building a suitable high-resolution velocity model is not easy. Here we present a case history of a pre-stack depth migration project where five overlapping surveys with

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/content/papers/10.3997/2214-4609.201401503
2007-06-11
2024-03-28
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