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Communication Dans Un Congrès Année : 2008

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

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Hervé Chauris
Mark S. Noble

Résumé

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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Dates et versions

hal-00535849 , version 1 (13-11-2010)

Identifiants

  • HAL Id : hal-00535849 , version 1

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Hervé Chauris, Mark S. 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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