The campaign covers wellbores 25/1-14, 25/1-14 A, B, C, D, E, F and G. Yggdrasil is located about 180 kilometres from Bergen.
Discoveries were made in a total of four wellbores. The overall discovery volume is estimated at between 15.3 and 21.3 million standard cubic metres (Sm3) of oil equivalent (o.e.). This corresponds to between 96 and 134 million barrels of oil equivalent.
The licensees will assess the discoveries as part of their development of the Yggdrasil area.
The wellbores were drilled near the formerly producing fields Frigg and Øst Frigg. The objective of the wellbores was to prove and delineate remaining petroleum deposits in five prospects in the Frigg Formation.
The prospects (“Omega”, “Alfa”, “Alfa Sør”, “Sigma NE” and “Pi”) were drilled horizontally in order to map the thickness and extent of oil that has re-migrated from Frigg and Øst Frigg.
The investigation of re-migrated oil in the Yggdrasil area started in production licence 873 (awarded in APA 2016) with the drilling of 25/2-23 A & S in 2021/2022.
Further investigations in the licence took place through 25/2-24 S, A, B and C in 2023. 25/1-14, 25/1-14 A, B, C, D, E, F and G are the first wellbores in production licence 873 B (awarded in APA 2023) and production licence 1249 (awarded in APA 2024).
The wellbores were drilled by the Deepsea Stavanger rig. The rig is now headed for the Munin field, which is operated by Aker BP.
The wellbores were drilled from production licence 873 B, and the horizontal wellbores extended into production licences 873 and 1249. 25/1-14, 25/1-14 A, B and C were classified as wildcat wellbores and 25/1-14 D, E, F and G were classified as appraisal wellbores. A total of four discoveries were made in five deposits. They were made in “Omega”, “Alfa”, “Sigma NE”, “Pi”, and “Sigma” was also proven in 25/1-14 G. “Alfa Sør” was dry.
