High-resolution 3D seismic acquisition

SOC has developed a new type of seismic acquisition system together with its partners Volcanic Basin Petroleum Research AS and Fugro Survey AS in Oslo, and in collaboration with the University of Tromsø.The system is different from previous 3D seismic systems as it only uses single-channel streamers. This allows deployment of the system from normal research vessels and hence by academic institutions. At the moment we are towing eight streamers parallel which means that we are imaging a forty-meter wide swath with 6m inline spacing for each sail line. This makes the system at least 2-3 times more efficient than any other academic 3D seismic system, but we are already working on an extension to 150 m swath width.

The system is aimed at imaging the top 500 m of the subsurface in areas with water depth between 200 and 2000 m and at resolution of 1-5 m. Compared to conventional 3D seismics the system is characterized by much reduced operating expenses and allows to acquire high-resolution 3D data at the cost of multi-channel 2D seismic data.

Initial 3D seismic cube for the Svalbard survey acquired in July 2004.

So far, the system has been tested three times in collaboration with the University of Tromsø on board of their research vessel Jan Mayen: in Malangen, Balsfjorden and offshore Svalbard. These tests were all very successful. The next major experiment will be the imaging of the Håkon Mosby mud volcano within the European Hermes project.

Design for the 24 streamer version of the system.

For commercial use of the system contact Frode Eriksen at VBPR, Oslo (+47 22958924), for academic applications Christian Berndt at Southampton Oceanography Centre (+44 23 80 596545).

You find more information about the industrial applications of the system at http://www.pcable.com.

 

This page is maintained by Christian Berndt. Last changes 13.1.2005. up.