Method for attenuating noise in seismic data

G - Physics – 01 – V

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

Patent

CA 2453280

The invention method for attenuating noise in the seismic data traces (51), comprises the computer processing steps of processing the move out velocity of the coherent noise data (33), that is different from the move out velocity of the seismic data (33) with the method steps of shorting the seismic data traces into a common receiver order and with the method steps of using the difference in the move out velocities to separate the coherent noise from the seismic data signal (59). The method is used in suppressing noise (60) in two and four-receiver component ocean bottom, (OCB) cable seismic data (51).

L'invention concerne un procédé permettant d'atténuer le bruit dans des traces de données sismiques (51). Ce procédé comprend les étapes informatique consistant à traiter la vitesse de déport ("move-out") des données de bruit cohérent (33), qui est différente de la vitesse de déport des données sismiques (33); à trier les traces de données sismiques dans un ordre de récepteurs commun; et à utiliser la différence entre les vitesses de déport pour séparer le bruit cohérent du signal de données sismiques (59). Le procédé selon l'invention permet de supprimer le bruit (60) dans des données sismiques (51) de câbles de plancher océanique (OBC) à deux et quatre éléments récepteurs.

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