2.2 Snøhvit

The Snøhvit project, operated by Statoil, is the first offshore development in the Barents Sea [9]. Located at 70° North, the project makes extensive use of subsea production facilities with no surface facilities offshore. The gas produced in almost 300 m of water is tied back 143 km to producing facilities at Melkøya [10]. The Snøhvit development will eventually incorporate gas from three discoveries (Snøhvit, Albatross and Askeladd). The development has reserves of 6.8 Tcf of natural gas and approximately 113 million barrels of condensate.

Figure 2 – An artist's impression of the offshore component of the Snøhvit project [12]

Source: Offshore-technology.com, "Snøhvit Gas Field, Barents Sea, Norway" http://www.offshore-technology.com/projects/snohvit/

The gas produced from the Snøhvit discovery is converted to LNG for sale into the US market. Since the produced gas contains up to 8% CO2 it undergoes treatment in a high pressure amine based solvent absorption process that reduces CO2 content to the levels required for making LNG [11].

The CO2 captured as part of the LNG process is compressed to a liquid state for transport back to the Snøhvit discovery where it is injected into the Tubåen formation 2,600 m below the sea bed [14].

The Tubåen formation is overlain by a shale layer that will trap injected CO2. The CO2 injection process will sequester at most 0.7 Mt/yr.