Wintershall Dea has increased resources estimate at the Bergknapp discovery in the Norwegian Sea following the completion of drilling of an appraisal well.

Using Deepsea Aberdeen semi-submersible rig, the appraisal well 6406/3-10 A has been drilled in production licence (PL) 836 S.

The firm now estimates that the size of the previously discovered recoverable resources in the Garn and Tilje Formations to range between 40 to 84 million barrels of oil equivalent (MMboe).

Wintershall also identified approximately 260m gas column in the Åre Formation, which was not identified in the original discovery well. This formation is estimated to hold 13MMboe to 56MMboe.

In April 2020, the company initially estimated the Bergknapp discovery to hold recoverable reserves between 26MMboe and 97MMboe.

The appraisal well 6406/3-10 A, which was drilled to a vertical depth of 4,854m and a measured depth of 5,160m below sea level, was terminated in the Åre Formation from the Early Jurassic.

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The Bergknapp discovery is located approximately 8km west of the Wintershall Dea-operated Maria oil field.

Wintershall Dea chief technology officer Hugo Dijkgraaf said: “We are excited that we have made another discovery in the Haltenbanken area in the Norwegian Sea. We will now work closely with our partners to bring the project to the final investment decision and successfully drive the development of the prospect.”

The licence partners are planning to explore potential development options for the Bergknapp discovery.

Wintershall Dea Norge managing director Alv Solheim said: “With Maria and the nearby Dvalin field, we already have an established position as a major operator in the Haltenbanken area.

“Bergknapp and Dvalin North will further strengthen this position.”

Wintershall Dea operates the production licence 836 S with a stake of 40%. Other partners include DNO Norge (30%) and Spirit Energy Norway (30%).