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.
Installation of the system will involve laying the cable on the seabed before it is trenched or covered with rocks to make it trawlable.
On the Snorre field, the cable will be laid using the vesselHavila Phoenix,and the trenching will be operated from theNorthern Wave. On the Grane field, the vesselOlympic Zeuswill 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 approximately. 300-350 metres. The Grane field is located in block 25/11. Water depth in this area is about 130 metres.
Related:Statoil: Permanent Seabed Seismic Streamers to Boost Production
