Equinor and its partners in the Gullfaks field off Norway are set to drill seven horizontal wells from the existing facility to increase oil recovery by 17 million barrels.

The Norwegian state-controlled operator said this week the partners plan to invest Nkr2.3 billion ($269 million) in the latest phase of development at the North Sea field.

Equinor, Norway’s Petoro and OMV of Austria this week presented an amended plan of development and operation for the scheme to the Ministry of Petroleum & Energy.