Carbon stores mapped

The NPD has completed its mapping of possible storage locations for carbon dioxide on the NCS, and has issued an atlas of such sites in the southern part of Norway’s Barents Sea sector.

Produced for the Ministry of Petroleum and Energy, this is the third in a series which began with the Norwegian North Sea in 2011 and continued for the Norwegian Sea earlier this year.

The atlas covers that part of the Norwegian Barents Sea which has been opened for petroleum activities and shows that it could theoretically hold up to 7.2 gigatonnes of the greenhouse gas.

However, the sites thought most certain have a capacity of 0.1 gigatonnes. The North Sea is thought to offer 70 gigatonnes, while the Norwegian Sea could have a mature capacity of 5.5 gigatonnes.

The atlases build on information provided by seismic surveys plus offshore well and production data, but the Barents Sea is less explored than the North and Norwegian Seas.

During its work on the atlases, the NPD mapped brinefilled formations (aquifers) and other sub-surface structures before assessing whether they are suitable for long-term secure storage.

One criterion in these evaluations is that carbon storage should have no negative impact on oil and gas operations, either now or in the future.