Sokkeldirektoratet

Delineation of oil discovery 6507/5-10 S (Slagugle) northeast of the Heidrun field in the Norwegian Sea – 6507/5-11

transocean-norge.jpg

Well 6507/5-11 was drilled by the Transocean Norge drilling facility. Photo: Transocean.

5/30/2022 ConocoPhillips Skandinavia AS, operator of production licence 891, has completed the drilling of appraisal well 6507/5-11 on oil discovery 6507/5-10 S (Slagugle) in the Norwegian Sea.

The well was drilled about 22 kilometres northeast of the Heidrun field, and about 270 kilometres north of Kristiansund.

The discovery was proven in reservoir rocks in the Lower Jurassic (Åre Formation) and Triassic (Grey Beds) in 2020. Before well 6507/5-11 was drilled, the operator's resource estimate for the discovery was between 12 and 32 million standard cubic metres (Sm3) of recoverable oil equivalent.

The primary exploration target for the well was to delineate the discovery and achieve a better understanding of in-place and recoverable volumes for the hydrocarbon-bearing layers encountered in well 6507/5-10 S. The secondary exploration target was to prove petroleum in Palaeocene reservoir rocks in the Tang Formation.

In the primary exploration target, well 6507/5-11 encountered sandstone layers in the Åre Formation in the Lower Jurassic and Grey Beds in the Upper Triassic totalling 122 metres with very good reservoir quality. No reservoir was encountered in the secondary exploration target in the Tang Formation.

The well is dry.

Preliminary estimates indicate that the size of the discovery is between 6 and 13 million standard cubic metres (Sm3) of oil equivalent. Collected data will be analysed and future delineation and possible development will be considered.

Data acquisition and sampling have been carried out.

Three successful injectivity tests were conducted. The planned injection rate was about 1000 Sm3/day for each test. The injectivity tests showed good flow properties in all zones, and communication in the Grey Beds between wells 6507/5-10 S and 6507/5-11.

This is the second exploration well in production licence 891. The licence was awarded in APA 2016.

Well 6507/5-11 was drilled to a vertical depth of 2273 metres below sea level and was terminated in the Red Beds in the Triassic.

The water depth is 351 metres. The well has been permanently plugged and abandoned.

Well 6507/5-11 was drilled by the Transocean Norge drilling facility, which is now drilling wildcat well 6507/4-3 S in production licence 1064 in the Norwegian Sea, where ConocoPhillips Skandinavia AS is the operator.

Map showing the location of well 6507/5-11

 

Contact

Ola Anders Skauby

Director Communication, public affairs and emergency response

Tel: +47 905 98 519

Updated: 5/30/2022

Latest news

Production figures October 2025
11/20/2025 Preliminary production figures for October 2025 show an average daily production of 2 017 000 barrels of oil, NGL and condensate.
Drilling permit for well 33/12-N-3 GH and 33/12-N-3 HH
11/20/2025 The Norwegian Offshore Directorate has granted Equinor Energy AS drilling permit for wellbore 33/12-N-3 GH in production licence 037 B/152 and 33/12-N-3 HH in production licence 037 B/277.
Dry well in the North Sea (2/6-8 S and 2/6-8 ST2)
11/18/2025 DNO and its partners have drilled a dry well in the "Page" prospect in the southern part of the North Sea, about 270 kilometres from Stavanger and 40 kilometres from Ekofisk.
What would you like to learn more about at Technology Day 2026?
11/17/2025 The Norwegian Petroleum Directorate is pleased to announce Technology Day 2026. Save the date – 4 June 2026 – and take this opportunity to nominate speakers for the event!
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.