Regularisation of irregularly sampled seismic data

Details Regularisation of irregularly sampled seismic data Regularisation of irregularly sampled seismic data

G - Physics

01

V

G01V 1/36 (2006.01)

Patent

CA 2672426

There is provided a method of spatially shifting seismic signals acquired through a seismic survey using the steps of identifying within the signals a set of N actual locations of seismic receivers and corresponding N seismic signals received by the set of seismic receivers; identifying a set of N' desired locations of seismic receivers; and determining a set of N' signal values at said N' desired locations by evaluating for each of said N' signal values a weighted sum of the N seismic signals, wherein the weights are at least partly determined by the relative distance between pairs of locations selected from said set of N actual locations of seismic receivers.

L'invention concerne un procédé de changement spatial de signaux sismiques acquis lors d'une étude sismique, qui consiste à identifier dans ces signaux un ensemble de N localisations réelles de récepteurs sismiques et de N signaux sismiques correspondants reçus par l'ensemble de ces récepteurs sismiques, à identifier un ensemble de N' localisations souhaitées de récepteurs sismiques, et à déterminer un ensemble de N' valeurs de signal au niveau de ces N' localisations souhaitées par l'évaluation pour chacune de ces N' valeurs de signal d'une somme pondérée des N signaux sismiques, les pondérations étant au moins en partie déterminées par la distance relative entre des paires de localisations sélectionnées parmi cet ensemble de N localisations réelles de récepteurs sismiques.

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