Sokkeldirektoratet

Gas discovery south of the Marulk field in the Norwegian Sea – 6507/2-5 S

9/17/2019 Equinor Energy AS, operator of production licence 942, has completed the drilling of wildcat well 6507/2-5 S.

The well was drilled about 12 kilometres southwest of the Marulk field, 38 kilometres southwest of the Norne installation, 20 kilometres northwest of the Skarv installation and about 140 kilometres west of Brønnøysund.

The objective of the well was to prove petroleum in Middle Jurassic reservoir rocks (the Garn and Ile formations). In addition, reservoir and fluid data were to be collected from the Lysing formation in the Upper Cretaceous.

Well 6507/2-5 S encountered a total gas column of 40 metres in the Garn and Not formations, of which 30 metres of sandstones mainly of moderate reservoir quality in the Garn formation and tight sandstones in the Not formation.

The Ile formation is tight and aquiferous. The gas/water contact was not encountered. As expected, the Lysing formation is aquiferous, and data was collected as planned.

Preliminary estimates place the size of the discovery between 8 and 14 million standard cubic metres (Sm3) of recoverable oil equivalents.

The licensees in production licence 942 will consider follow-up of the discovery, and will determine whether further appraisal is needed.

The well was not formation-tested, but extensive volumes of data have been acquired and samples have been taken.

Well 6507/2-5 S is the first exploration well in production licence 942, which was awarded in APA 2017.

The well was drilled to vertical and measured depths of 4147 and 4191 metres below the sea surface, and it was terminated in the Tilje formation in the Lower Jurassic.

Water depth at the site is 332 metres. The well has been permanently plugged and abandoned.

Well 6507/2-5 S was drilled by the West Phoenix drilling facility, which will now move on to drilling assignments in the UK sector.

Map of well 6507-2-5-S

Contact
postboks@sodir.no

Tel: +47 51 87 60 00

Updated: 2/10/2025

Latest news

New Dashboard: Resource stats by company
11/14/2025 Our new Dashboard provides an overview of the licensees’ respective petroleum resources and reserves on the Norwegian continental shelf (NCS).
Delineation of the “Zagato” oil discovery in the Barents Sea – 7122/8-4 S
11/13/2025 Vår Energi's appraisal well 7122/8-4 S confirms the 7122/8-3 S (“Zagato”) oil discovery, which was proven in February.
New technology is profitable when shutting down wells
11/13/2025 About 2900 wellbores on the Norwegian continental shelf (NCS) will be plugged and shut down in the years to come, but development and implementation of new technology can save the industry and society considerable costs.
Dry well in the North Sea (34/6-9 S)
11/11/2025 Equinor and its partners have drilled a dry well in the Snorre area in the North Sea.
Dry well in the North Sea (30/11-16 S)
11/7/2025 Aker BP and its partners have drilled a dry well in the Yggdrasil area in the North Sea.
Drilling permit for wellbore 7220/7-5
11/7/2025 The Norwegian Offshore Directorate has granted Equinor Energy AS drilling permit for wellbore 7220/7-5 in production licence 532.
New CCS guidelines
11/3/2025 The Norwegian Offshore Directorate has drawn up guidelines explaining how to fulfil the requirements in Section 26 of the Regulations relating to documentation in connection with storage of CO2 on the Norwegian continental shelf.
New report about power from shore
10/29/2025 Power from shore as replacement for gas turbines has been the most important abatement to reduce greenhouse gases emissions offshore.
Drilling permit for wellbore 7018/5-2
10/29/2025 The Norwegian Offshore Directorate has granted Equinor Energy AS drilling permit for wellbore 7018/5-2 in production licence 1236.
Drilling permit for wellbore 25/8-C-23 D
10/24/2025 The Norwegian Offshore Directorate has granted Vår Energi ASA drilling permit for wellbore 25/8-C-23 D in production licence 027.