Time demigration/migration using curvelets

Abstract : From a geophysical point of view, curvelets can be seen as the representation of local plane waves. They can be useful for a series of seismic processing tasks. Here we propose to use the decomposition in the curvelet domain in the context of velocity model scanning for prestack time migration. We start from an initial prestack time migration that we decompose into curvelet components. Each individual component is kinematically demigrated and then remigrated in a new velocity model. The demigration/migration sequence is reduced to a simple mapping of the curvelet coefficients and avoids the classical summations along isochrones. An application on a 2D real data set shows the advantages and the current limitations of the time demigration/migration approach.
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https://hal-mines-paristech.archives-ouvertes.fr/hal-00535841
Contributeur : Herve Chauris <>
Soumis le : samedi 13 novembre 2010 - 13:26:51
Dernière modification le : lundi 12 novembre 2018 - 10:55:31

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  • HAL Id : hal-00535841, version 1

Citation

Truong Nguyen, Hervé Chauris, Gilles Lambaré. Time demigration/migration using curvelets. 71st EAGE Conference and Technical Exhibition, Eur. Ass. of Geoscientists and Engineers, Jun 2009, Amsterdam, Netherlands. pp.V0007. ⟨hal-00535841⟩

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