Technip announced today they have been awarded a lump sum contract by Statoil for pipelay and subsea installation work on the SnÃ¸hvit CO2 Solution project. The SnÃ¸hvit field has been in operation since 2007 and is located approximately 140 kilometers north-west of Hammerfest in Norway, in the Arctic Circle.
The SnÃ¸hvit field in the Barents Sea supplies gas to the world’s first LNG plant with carbon capture and storage. Gas from the SnÃ¸hvit field contains 5 – 6% CO2 which freezes solid at a much higher temperature than natural gas. To avoid blocking the heat exchangers in the processing plant, the CO2 is removed before the gas is cooled into LNG and then transported via subsea pipeline back to the SnÃ¸hvit field.
Statoil notes on their website that the CO2 is then pumped underground and stored in a geological layer of porous sandstone called the TubÃ¥en formation. This structure lies 2,500 metres beneath the seabed and under the layers in SnÃ¸hvit containing gas. They note that more than 700,000 tons of carbon dioxide will be stored annually in this manner.
Technip’s contract covers the fabrication and installation of flowlines, including two 5-kilometer 13% chrome stainless steel production flowlines and a 5-kilometer CO2 injection flowline. In addition, the contract includes the installation and tie-in of spools, jumpers and umbilicals, and a new combined production and injection template and manifold.
The work will be executed by Technip’s operating center in Oslo, Norway. The flowline will be welded at Technip’s spoolbase in Orkanger, Norway, while installation will be performed by the 136 meter pipelay vessel Apache II in the first half of 2015. Installation of the associated umbilicals, template, manifold, spools and other subsea equipment will be performed by other vessels from Technip’s fleet.
Odd StrÃ¸msnes, Managing Director of Technip in Norway, stated: “This award confirms Technip’s leading position as the contractor of choice for marine installation projects in the Arctic. It also demonstrates our unique abilities when it comes to the fabrication and complex reeling of larger diameter stainless steel flowlines.”