Statoil and Marathon Petroleum Norge have sealed a deal to exchange licences on North Sea prospects.

The companies plan to exchange licence shares on Gudrun / Sigrun, the Brynhild prospect and find 15 / 5-2 in the North Sea.

Under the agreement, Statoil will receive 8.2% of Gudrun / Sigrun, while Marathon Petroleum Norge will get 10% of the Brynhild prospect and 12.5% of the 15 / 5-2 find.

Norway’s Statoil will receive a 55% share of Gudrun and Brynhild and continue as operator, GDF SUEZ will obtain 25% and Marathon Petroleum Norge will hold a 20% stake.

Gudrun is to be developed as a fixed process platform and will be tied back to the existing facilities in the Sleipner area and the Kårstø process plant in the north of Rogaland County.

The plan for a development and operation (PDO) decision for the Sigrun find is due in the second half of 2010.

Development will take the form of a seabed installation tied back to the future platform on the Gudrun field.