Method for removing ghosts on data of marine cable with positions of the receiver irregular seismographic

摘要

Method for removing ghosts on data of marine cable seismographic with positions of receiver is irregular. The present invention relates to seismic data are obtained for each activation of the seismic source in a cable seismographic marine and for each frequency, after being transformed to a spectral domain.A scheme of conjugate gradient iterative, which uses a pre conditioner physically based, is applied in seismic data processing, to provide a solution of least squares for a set of normal equations to a system of equations of the withdrawal of ghosts. The solution is inverse transformed back to a field of space - time to arrange the seismic data without ghosts.