oa Post-stack Seismic Processing Refinement Facilitating Khuff and Pre-Khuff Exploration: Case Study from Shallow Marine Offshore Abu Dhabi

Three 3-D ocean-bottom cable (OBC) seismic surveys acquired in offshore Abu Dhabi have been subjected to ADNOC’s in-house post-stack seismic refinement routine. The objectives were to resolve the tuning effects caused by various stratigraphic features and enhance fault imaging at the deep Khuff and pre-Khuff targets. There were some remaining persistent issues, such as: (1) noise; (2) strong short wavelength jitters of the acquisition footprint, which degraded the stack continuity even at depth; (3) multiples; and (4) the relatively lowfrequency bandwidth of the final data. These issues hampered the interpretation of the data after the imaging stage.