Method of seismic processing for the decomposition of a...

G - Physics – 01 – V

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G01V 1/36 (2006.01)

Patent

CA 2527215

Method of processing seismic data representative of at least one wavefield, characterized in that local harmonic components of the wavefield are determined at a given point P of the subsurface by implementing a recurrent processing according to which a harmonic of rank n+l, n being a positive integer, is determined as a function of one or more harmonics of rank n or lower to which is applied at least one filtering which depends on at least one local parameter at the point P, this local parameter being chosen from among the components of the wavevector, the frequency of the wavefield, the local velocity, the local anisotropy parameters or any combination of these various parameters.

Procédé de traitement de données sismiques représentant au moins un champ d'ondes, se caractérisant par le fait que les composants harmoniques locaux du champ d'ondes sont déterminés à un point donné P du sous-sol en mettant en oeuvre un traitement récurrent selon lequel une harmonique de rang n+1, n ayant la valeur d'un nombre entier positif, est établie comme une fonction d'une ou de plusieurs harmoniques de rang n ou inférieur à n à laquelle on applique au moins un filtrage dépendant d'au moins un paramètre local au point P, le paramètre local étant choisi parmi les composants du secteur d'ondes, la fréquence du champ d'ondes, la vélocité locale, les paramètres anisotropiques ou une combinaison quelconque de ces différents paramètres.

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