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What initial velocity model do we need for full waveform inversion?

Abstract : In the context of velocity model building, we examine if the velocity models obtained after first-arrival traveltime tomography are accurate enough for subsequent full waveform inversion of reflected energy. For that purpose, we test the quality of the velocity model obtained by first-arrival traveltime tomography on the BP salt dome model. Several 1-D inversions are conducted in two different zones. In the simplest zone corresponding to smooth velocity models, the tomographic models are good enough for waveform inversion with realistic frequency contents. In the complex part going through a salt body, one need very low frequencies (starting at around 1 Hz) or a further refinement of the tomographic model.
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https://hal-mines-paristech.archives-ouvertes.fr/hal-00535849
Contributor : Herve Chauris <>
Submitted on : Saturday, November 13, 2010 - 2:24:54 PM
Last modification on : Wednesday, October 14, 2020 - 3:52:25 AM

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  • HAL Id : hal-00535849, version 1

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Hervé Chauris, Mark Noble, Cédric Taillandier. What initial velocity model do we need for full waveform inversion?. Workshop 11, 70th EAGE Conference and Technical Exhibition, Eur. Ass. of Geoscientists and Engineers, Jun 2008, Rome, Italy. Workshop 11. ⟨hal-00535849⟩

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