Spectral shaping inversion and migration of seismic data

G - Physics – 01 – V

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G01V 1/28 (2006.01) E21B 49/00 (2006.01)

Patent

CA 2707526

A geophysical model of a subsurface region is generated based on seismic data, e.g., seismic reflection data. Migration and seismic inversion are applied to the seismic data to generate estimates of one or more physical or seismic properties of the subsurface region. Seismic inversion, such as spectral shaping inversion, is applied before or after migrating the seismic data through a variety of techniques that each avoid the amplification of dipping energy while optimizing computational efficiency and/or accuracy.

Selon l'invention, un modèle géophysique d'une région souterraine est généré en fonction de données sismiques, par exemple des données de réflexion sismique. Une migration et une inversion sismique sont appliquées aux données sismiques pour générer des estimations d'une ou de plusieurs propriétés physiques ou sismiques de la région souterraine. Une inversion sismique, telle qu'une inversion de forme spectrale, est appliquée avant ou après la migration des données sismique par une pluralité de techniques évitant l'amplification de l'énergie d'inclinaison tout en optimisant le rendement et/ou la précision des calculs.

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