PGS Combines HD3D with 315m Wide Penta Source

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

Last weekend, PGS seismic vessel Ramform Tethys reconfigured from a wide-tow triple source set-up to an even wider penta-source solution (5 arrays), with a total source separation of 315 meters. 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.  

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

  • Wide-tow Penta Source with total source span of 315m 
  • GeoStreamer: 16 streamers x 56.25m nominal separation 
  • Includes 3 long streamer tails (10km) 
  • Deep tow at 25m and 28m 

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 this week demonstrates, once againhow the flexibility and strength of the Ramform design make this is the best platform for advanced seismic solutions.  

Ramform Panta Source layout

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. 

Penta Source
Ramform Tethys towing the widest-ever multi-source in the Barents Sea, September 2020.

Find Out More

For further details on the PGS Barents Sea 2020 penta source project, or to discuss using this technology on your 2021 projects, contact your PGS account manager or email


Contact a PGS expert

Please contact a member of our Europe team for more information.