Norwegian oil exploration and development company Aker BP has completed the Omega Alfa exploration campaign in the Norwegian North Sea, leading to the discovery of oil.

The anticipated recoverable volume ranges from 96 million barrels of oil equivalent (mboe) to 134mboe, bolstering the resource base of the Yggdrasil area.

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Aker BP CEO Karl Johnny Hersvik said: “Omega Alfa is among the largest commercial discoveries in Norway in a decade. Building on the momentum from the oil discovery at East Frigg in 2023, it marks a major step toward our ambition of producing more than one billion barrels [1bbbl] from the Yggdrasil area.

“This is the result of a strong collaborative effort between our own teams and our alliance partners, and a testament to how new exploration methods push the boundaries. We look forward to unlocking even more of the potential in this prolific area.”

The campaign targeted five exploration areas, comprising Omega, Alfa, Alfa South, Sigma NE and Pi, via a multilateral well west of Yggdrasil.

Initial reports in July suggested a finding of 20–40mboe from two exploration areas, but the final figures have now increased following the campaign’s completion.

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Drilling operations commenced in the beginning of May with the Deepsea Stavanger rig and continued over three months, during which a total of 45,000m were drilled by the team.

This encompassed 40,000m in reservoir sections and the drilling of the three longest well branches ever on the Norwegian Continental Shelf, with the longest extending 10,666m.

Reservoir data is instrumental in accelerating the advancement into concept studies to identify the optimal tie-back solution to Yggdrasil.

The plan for development and operation (PDO) of the Yggdrasil field development project was sanctioned by Norwegian authorities in 2023 and is on track, with first oil anticipated in 2027.

The proven resource base is around 700mboe, with a focus on expanding this to more than 1bbbl during ongoing exploration.

The Omega Alfa discovery is a key component in achieving this goal.

The exploration campaign spanned production licences 873, 873 B and 1249, all operated by Aker BP.

The company holds a 47.7% stake in licences 873 and 873 B, alongside partners Equinor with 40% and Orlen Upstream Norway with 12.3%.

In licence 1249, the partnership comprises Aker BP with 38.16%, Equinor at 32%, Petoro at 20% and Orlen Upstream Norway at 9.84%.

Earlier in February, Aker BP and its partners reported a dry well in the Njargasas prospect in the Norwegian North Sea.