1887

Abstract

Summary

Anisotropic parameter estimation is challenging for new exploration areas where there is no well data. In a 3000 km2 offshore survey from West Africa, we used surface seismic data in a non-linear tomographic inversion to simultaneously estimate migration interval velocity and anellipticity (η). Starting with an isotropic input model, joint tomography created a model of anellipticity. The anellipticity field computed without any well control was geologically plausible (structurally consistent) and the flatness of common image point gathers was significantly improved.

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/content/papers/10.3997/2214-4609.201412728
2015-06-01
2024-03-28
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