The Deepsea Nordkapp rig will be moved to drill a development well in production licence 150. Credit: Retina Creative / Pixabay.

Aker BP has concluded appraisal well drilling north-east of the Alvheim field in the Norwegian North Sea.

Located on the 25/2-21 (Liatårnet) oil discovery in production licence 442, the well 25/2-22 S encountered hydrocarbons during drilling, but lower than expected, the firm said.

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Norwegian Petroleum Directorate (NPD) said that the Liatårnet discovery’s resource estimate was between 13 and 32 million standard cubic metres (Sm³) of recoverable oil, prior to the drilling of the exploration well.

In a statement, Aker BP said: “Pending further analysis, the preliminary results indicate that a downward adjustment of the resource estimate for the discovery is likely.”

The 25/2-22 S well’s primary exploration objective was to assess the quality of the oil proven in the Skade Formation in well 25/2-21 (Liatårnet) in 2019.

The secondary objective of the well was to gather geological information on formation strengths, as well as to prove the oil/water contact.

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The appraisal well 25/2-22 S was drilled during the Deepsea Nordkapp drilling facility to a measured depth of 1772m.

Terminated in rocks from the Oligocene/Eocene Age (the Hordaland Group), the well has been plugged and abandoned, NPD said.

Aker BP said that the well results do not impact its exploration strategy in the area.

The Norwegian firm operates the production licence 442 with a 90.26% stake while the remaining stake is held by Lotos Exploration & Production Norway.

NPD said that the Deepsea Nordkapp semi-submersible drilling facility will be moved to drill a development well in production licence 150.