Polish energy group Orlen has acquired a 7.604% stake in the redevelopment project of the Ekofisk oil fields from Norwegian-listed company DNO ASA, which is active in the North Sea. The transaction enables Orlen to join a key project alongside ConocoPhillips, Var Energi and Petoro, consolidating its strategy of securing non-Russian supply sources.
Strategic reinforcement in the North Sea
Orlen joins a project operated by ConocoPhillips, which plans a capacity of 28,000 barrels of oil equivalent per day (boe/d). The Polish company, which was already producing 91,900 boe/d in the North Sea in Q2 2025, aligns this move with its broader goal of diversifying supply sources. This strategy follows Warsaw’s policy to fully phase out Russian hydrocarbons by 2027.
As part of the deal, DNO gains a stake in exploration licence PL1135, targeting the Cassio prospect, and increases its holding in the Verdande field located in the Nome area. The Norwegian group now owns 14.8251% of this field, with production expected to begin by the end of 2025.
Asset reallocation to fast-return cash flows
DNO’s exit from the Ekofisk PPF project reflects its portfolio optimisation strategy, aimed at reducing exposure to long-term investments. The Ekofisk redevelopment, with production scheduled for 2029, requires significant multi-year capital expenditure (CAPEX). By shifting focus to Verdande and Cassio, DNO prioritises projects with shorter investment cycles.
No current sanctions prevent the transaction between the two companies, according to updated European and US compliance registers as of November 2025. However, the deal remains subject to approval by Norwegian authorities, including the Ministry of Petroleum and Energy and the Norwegian Petroleum Directorate.
New dynamics for legacy assets
The Ekofisk PPF project, led by ConocoPhillips with a 35.112% stake, also includes Var Energi (52.284%), Petoro (5%) and now Orlen. This reshuffling of ownership reflects a broader trend of legacy asset redistribution in Norway amid ongoing oil price volatility.
The Final Investment Decision (FID) for Ekofisk is expected before 2027, while exploration drilling at Cassio could begin by late 2026. These timelines will shape upcoming strategic movements among the involved parties.
