|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
||Design for the 24 streamer version of the
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.