Fremgangsmåte for å behandle seismiske data

摘要

A method of de-ghosting seismic data acquired in a marine seismic survey comprises estimating ∂_zp (where p is the fluid pressure) from a time-derivative of p and a derivative of p in a horizontal direction such as the x-direction. The time-derivative of p and the derivative of p in the horizontal direction can be readily obtained from the acquired seismic data, and are used to provide an improved estimate of ∂_zp which, in general, cannot be directly determined from the acquired seismic data. Once ∂_zp has been estimated it can be used to de-ghost the acquired seismic data.