Abstract

Seismic data quality of the deep pre-rift and syn-rift section always suffer from lack of low frequency in conventional seismic acquisition and poor image focus due to velocity complexity. Low frequency has better penetration to deep targets but suffers from the ghost effect of conventional flat streamer acquisition. Broadband processing partly compensates for the ghost effect to recover the lower frequency that is very critical for interpretation of the deeper targets. PSDM with a more accurate velocity model honors the 3D velocity variations and gives better image focusing and positioning than PSTM