24 September 2018

In this lecture, I present the motivation, the evolution and the benefits of a new marine acquisition concept developed in close cooperation between Lundin and CGG over the last few years. We call the concept TopSeis. It addresses the lack of near-offset data recorded in conventional towed-streamer acquisition by enabling the recording of short- and zero-offset data with the seismic sources located above the streamers. In addition, TopSeis significantly increases the illumination density (number of times a specific depth point is recorded) for both shallow and deep targets. This benefits imaging, AVO and inversion as shown by several synthetic and real examples.

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