Abstract

Marine seismic data is undergoing revolution of resolution , as new technologies overcome the traditional resolution limits imposed by notches in the frequency spectra introduced by surface ghosts. A number of technologies have been developed to remove/minimise the receiver notch at acquisition level such as over/under cables, hydrophone and geophone summation, variable depth streamer, wavefield reconstruction etc. Broadband acquisition itself takes care of de-ghosting techniques. However de-ghosting techniques are applied in processing on conventional data/legacy data with conventional acquisition also achieving significant improvements where data has sufficient underlying signal-to-background noise ratio.