Sokkeldirektoratet

Dry well north of the Vilje field in the North Sea – 25/1-13

3/12/2019 Wellesley Petroleum AS, operator of production licence 871, is in the process of concluding the drilling of wildcat well 25/1-13.

The well was drilled about 20 kilometres north of the Vilje field and 220 kilometres northwest of Stavanger.

The objective of the well was to prove petroleum in reservoir rocks in the Eocene (the Frigg formation).
 
25/1-13 encountered the Frigg formation with a thickness of about 50 metres, with aquiferous sandstone layers totalling 10 metres, mainly with good reservoir quality. The underlying upper part of the Balder formation in the Eocene to Palaeocene is about 40 metres, this also with aquiferous sandstone layers totalling 20 metres with good to very good reservoir quality. The well encountered only traces of gas in the Frigg formation, and is therefore classified as dry. 

This is the first exploration well in production licence 871, which was awarded in APA2016.

25/1-13 was drilled to a vertical depth of 2125 metres below the sea surface, and was terminated in the Balder formation in the Palaeocene. The well will be permanently plugged and abandoned.

Well 25/1-13 was drilled by the Transocean Arctic drilling facility, which is now headed for a stay at the shipyard in Ølen.

25-1-13.png

Contact
postboks@sodir.no

Tel: +47 51 87 60 00

Updated: 2/10/2025

Latest news

Drilling permit for wellbore 31/4-A-15 B
6/30/2025 The Norwegian Offshore Directorate has granted OKEA ASA drilling permit for wellbore 31/4-A-15 B in production licence 055.
Oil discovery near the Johan Castberg field in the Barents Sea (7220/7-CD-1H)
6/30/2025 Equinor and its partners have made an oil discovery in the "Drivis Tubåen" prospect.
Check out our key figures in new visualisations!
6/27/2025 Now you have a quick and easy way to extract key figures associated with petroleum activities on the Norwegian continental shelf (NCS) in an interactive dashboard.
Drilling permit for wellbore 6506/12-PB-3 H
6/26/2025 The Norwegian Offshore Directorate has granted Equinor Energy AS drilling permit for wellbore 6506/12-PB-3 H in production licence 094.
Dry well in the North Sea (25/11-30 S)
6/26/2025 Equinor and its partners have drilled a dry well on the «Lit» prospect in the North Sea.
Dry well in the Norwegian Sea (6405/7-4)
6/25/2025 Aker BP and its partners have drilled a dry well on the “Rondeslottet” prospect in the Norwegian Sea.
Drilling permit for wellbore 15/8-3 S
6/23/2025 The Norwegian Offshore Directorate has granted Equinor Energy AS drilling permit for wellbore 15/8-3 S in production licence 1137.
Production figures May 2025
6/20/2025 Preliminary production figures for May 2025 show an average daily production of 1 980 000 barrels of oil, NGL and condensate.
Appraisal well confirms oil discovery in the Norwegian Sea (6507/5-12 S)
6/19/2025 ConocoPhillips Skandinavia AS, operator of production licence 891, has concluded drilling of the second appraisal well, 6507/5-12 S, on the 6507/5-10 S (Slagugle) oil discovery .
Expedition to map the environment
6/18/2025 The Norwegian Offshore Directorate has participated in research expeditions for many years in an effort to acquire more knowledge about the Norwegian continental shelf (NCS) and the resources in the subsurface. Now we’ve also gathered environmental data.