Acquisition Design of the First 4 Component 3DOcean Bottom Seismic in the Caspian

摘要

The signal to noise problems inherent in towed streamer data associated with mud volcanoes, subsurfaceheterogeneities and distributed gas in the Azeri, and Gunashli structures of the Caspian sea prompted the use ofthree dimensional four component ocean bottom seismic (3D/4C OBS) to improve imaging. The introduction ofseveral innovative enhancements to the traditional ocean bottom cable technique, when applied cohesivelyacross both acquisition and processing, resulted in cost savings compared to conventional OBS acquisition andimproved final data quality compared to towed streamer seismic.