Ramform Tethys Tows Record 50 Square Mile Streamer Spread

MV Ramform Tethys. Photo: PGS

Subsea surveying company PGS has once again set the record for the world’s largest seismic streamer spread tow covering a surface area of a whopping 50 square miles.

The new record was set in June by the company’s new flagship Ramform Tethys for a survey over the Aasta Hansteen area of the Norwegian North Sea. The tow also happened to be the maiden project for the new Ramform Titan-class vessel.

During the tow, the Ramform Tethys used a configuration of 16 streamers, each measuring 8.1 km long and with a streamer separation of 75 meters making for a total spread of 129.6 square kilometers of streamer equipment.

The new record beats the previous industry record, which was set by sister ship Ramform Titan in December 2015 for towing around 127 square kilometers of streamers during the first ever 18-streamer deployment in the Bay of Bengal.

“I continue to be impressed by the ability of PGS crews to utilize the Titan-class vessels, as demonstrated by Ramform Tethys and her crew on Aasta Hansteen. The performance we see from competent crews and remarkable vessels is a great asset in a challenging market.”

Ramform Tethys commenced acquisition in June of a new 4,400 square km 3D survey over the Aasta Hansteen area of the Norwegian Sea. The survey is due to be completed in August 2016, with fast track data available four months after the final shot.

Ramform Tethys, launched March 2016, represents an enormously stable platform with outstanding seakeeping characteristics, that is capable of taking full advantage of PGS’ trademarked GeoStreamer technology. Like the Titan-class sisters, the Ramform Tethys has the flexibility to encompass virtually any acquisition design.

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