Permanent reservoir monitoring system installed on Snorre, Grane
STAVANGER, Norway -- Work will continue this summer and autumn on installing a seismic streamer on Snorre. A dedicated system with a seismic streamer will also be installed on Grane. This work is scheduled for completion in early winter 2015.
Permanent reservoir monitoring involves permanently installing a streamer on the seabed to provide a more frequent and better-quality seismic picture of changes in the reservoir. The cable will be used to acquire more knowledge about the reservoir, and thereby provide an opportunity to produce more oil.
On the Snorre field, the cable will be laid using the vessel Havila Phoenix, and the trenching will be operated from the Northern Wave. On the Grane field, the vessel Olympic Zeus will both lay and bury the cable.
The fields are operated by Statoil. The Snorre field is located in blocks 34/4 and 34/7 in the North Sea. Water depth in the area is approx. 300-350 m. The Grane field is located in block 25/11. Water depth in this area is about 130 m.
Installation of the system will involve laying the cable on the seabed before it is trenched or covered with rocks to make it trawlable.