PGS Combines HD3D with 315m Wide Penta SourceRamform Tethys in action

PGS Combines HD3D with 315m Wide Penta Source

Ramform Tethys has begun a new project in the Barents Sea that uses the most advanced configuration ever towed by a seismic streamer vessel.

PGS seismic vessel Ramform Tethys has now been reconfigured from a wide-tow triple source set-up to an even wider penta source solution (5 arrays), with a total source separation of 315m. All source elements are placed in front of the streamers, with almost zero offsets. The 315m source separation is the widest ever towed by a seismic vessel.

The Barents Sea project further extends PGS’s MultiClient coverage in the Hammerfest Basin. It combines a unique source configuration, with a state-of-the-art streamer spread.

Wide-tow multi-source solutions can deliver high-quality images of shallow geological targets without sacrificing acquisition efficiency. PGS deployed a wide-towed triple-source on GeoStreamer X programs in the Viking Graben 2019 and 2020, and until very recently the Ramform Tethys was also towing a wide-tow triple-source in the Barents Sea in 2020.

Time for the Next Leap

Wide-tow source until now has been in the 180m to 250m range (total source span). The imaging results and feedback from clients have been very good. Now PGS has taken the next leap, drawing on the design strengths of the Ramform fleet.

The Barents Sea wide-tow Penta Source project which commenced recently demonstrates, once again, how the flexibility and strength of the Ramform design make this is the best platform for advanced seismic solutions.

2021 Opportunities

“This configuration is now available for frontier and GeoStreamer X projects, and we look forward to building our 2021 campaigns in the Barents Sea and elsewhere with this advanced streamer and source offering in the portfolio,” commented Berit Osnes, Senior Vice President Sales & Services, Eurasia at PGS.

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