In the search for continued petroleum resources on the NCS and in other regions around the world, geologists and geophysicists working with imaging of the subsurface agree that we need better data.
“Ocean Bottom Seismic (OBS) is one option but it’s not necessarily the optimal solution,” claims Berit Osnes, Executive Vice President of New Ventures in PGS.
The attraction of OBS is obvious. By placing receivers on the seafloor and decoupling the source from these receivers, it is possible to record rich azimuth data, potentially giving superior illumination of geologically complex exploration targets. On the downside, the data is costly, and slow to acquire and process.
With no OBS-crews in their extensive fleet, PGS was convinced that they could offer a better overall solution with advanced towed-streamer technology, including the widely celebrated GeoStreamer.
“The answer was in fact simply the next step, as it incorporates all the acquisition solutions applied on our groundbreaking 2018 survey in the Barents Sea (GEO 03/2019, page 2), that is a joint project with TGS, combined with multi-azimuth acquisition. Wide-towed sources as well as longer and denser streamer spreads are enabled by our high-capacity Ramform vessels,” Osnes says.
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Photo: PGS