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Aasta Hansteen

The field is located in 1 300 m of water in the Norwegian Sea, 300 km west of Sandnessjøen. Its floating platform is higher than the Eiffel tower.

Aasta Hansteen

Aasta Hansteen was discovered in 1997, and the plan for development and production (PDO) was approved in 2013. The field has been named after women’s rights advocate and activist, painter and author Aasta Hansteen.

The field initially comprised 3 separate deposits: Luva, Haklang and Snefrid Sør. A new deposit was discovered in 2015, Snefrid Nord. Aasta Hansteen project is jointly owned by:
  • Equinor (51%)
  • Wintershall (24%)
  • OMV (15%)
  • ConocoPhillips Skandinavia (10%)
The field is developed with a spar platform, a floating installation with a cylindrical column moored to the seabed. The development also includes 2 subsea templates with 4 slots each and 2 subsea templates with 1 slot each (satellites).

The templates are tied-back to the platform through pipelines and steel catenary risers. Aasta Hansteen was granted a PDO exemption for the development of the Snefrid Nord deposit in 2017.

Aasta Hansteen came on stream 16 December 2018. Gas is transported in the Polarled pipeline to the Nyhamna terminal for further export to the UK. Produced condensate is loaded onto shuttle tankers and transported to the markets.

Set in 1300 m of water Aasta Hansteen is the deepest field development on the NCS. The development concept includes 3 subsea templates producing to the floating platform with a vertical cylindrical hull moored to the seabed (spar platform).

This is also the largest spar platform in the world, and the 1st with storage tanks for condensate on board.

The 70 000-tonne, 339 m tall platform was towed to the field in April 2018, the biggest tow-out operation on the NCS since Troll A in 1995.

At plateau Aasta Hansteen and Snefrid North are expected to produce some 23 million Sm3 of gas (144 000 barrels of oil equivalent) per day. The field will reach plateau relatively soon after start-up, the plateau period lasting through the gas year 2023.