Full deghosting of OBC data with over/under source acquisition

Abstract

The resolution of marine seismic data is affected by ghost and reverberations occurring in the water layer. A benefit of acquiring ocean‐bottom cable data or node data is that the receiver‐side ghosts and reverberations can be attenuated by combining pressure data, recorded with hydrophones, with velocity data, recorded with vertical geophones. Resolution of seismic data is also affected by the source ghosts. Acquisition of seismic data with over/under sources allows attenuating the source ghost and in this way to completely deghosting the ocean‐bottom recorded data. In this paper, we present the results of an experiment where a 2D oceanbottom cable line was recorded with over/under sources.