An Effective Ghost Removal Method for Marine Broadband Seismic Data Processing

Ghost reflections are the main limiting factor of the resolution of marine seismic data. Several acquisition and processing techniques have been proposed to address this problem. Some of the recently introduced acquisition methods are over/under streamer, slanted streamer, geostreamer (hydrophone/geophone streamer). These methods adequately address the notch introduced by the ghost reflections but do not address the loss of the critical part of the injected source wavelet spectrum, the low frequencies. Here we present a method of de-ghosting which not only addresses the notch problem introduced by the ghost reflections but also recovers the low frequency component of the source signature. Our method of recursive de-ghosting outputs seismic data is if recorded away from the ghost generating air/water contact. We demonstrate the effectiveness of the method on an over/under streamer seismic data.