Methods and systems for reconstructing low frequency particle velocity wave fields and eliminating the phantom effect in seismic cable data

摘要

Methods and Systems for Reconstructing Low Frequency Particle Speed Wave Fields and Phantom Elimination in Seismic Cable Data The present invention relates to computational methods and systems for eliminating the phantom effect in marine seismic data. In particular, an exploration seismology vessel tugs numerous seismic cables that form a data acquisition surface located below a free surface. The methods computationally remove the phantom effect or substantially remove phantom receiver signals from seismic data recorded by seismic cable receivers. Phantom elimination methods include low frequency compensation to retrieve vertical velocity wave field information that is typically lost due to a low signal-to-noise ratio over a low frequency range regardless of free surface conditions or the shape of the waveform. data acquisition surface. .