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


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

30/05/2022 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



Ola Anders Skauby

Director Communication, public affairs and emergency response

Tel: +47 905 98 519

Updated: 30/05/2022

Latest news

Dry well in the North Sea
14/06/2024 The ”Toppand east” well 35/11-29 S in the North Sea, drilled by Wellesley, Equinor and Petoro, proved to be dry.
Technology is the key
10/06/2024 Technology Day 2024 turned out to be exactly what the Norwegian Offshore Directorate was hoping for, with presentations and discussions about acquiring subsurface data, challenging barrels and next-generation production systems.
Our experts perform important work for the entire industry
07/06/2024 Experts in the Norwegian Offshore Directorate are key speakers at the EAGE technical conference. Here they’ll talk about scientific work that benefits the industry as well as the broader society.
Announcement of acreage for CO2 storage on the Norwegian Continental Shelf
06/06/2024 On 6th of June 2024, the Ministry of Energy announced three areas for CO2 storage pursuant to the CO2 Storage Regulations. These areas comprises defined blocks in the North Sea.
Many new mud volcanos discovered in the western Barents Sea
06/06/2024 As many as ten new mud volcanos have been proven in water depths of 440-480 meters in the western Barents Sea.
Drilling permit for well 6605/6-1 S
05/06/2024 The Norwegian Offshore Directorate has granted OMV (Norge) AS drilling permit for well 6605/6-1 S in production licence 1194, cf. Section 13 of the Resource Management Regulations.
The strike called off
05/06/2024 Starting Wednesday June 5th 23 employees in the Norwegian Offshore Directorate, that are members of the trade union Unio, are on strike. Update: On Wednesday morning, all employees are back to work as normal.
Large area with new released datasets in the Barents Sea
04/06/2024 The announced APA area in the Barents Sea has been expanded with 34 blocks, featuring good coverage thanks to recently released seismic data.
Dry well in the Barents Sea
30/05/2024 Exploration well 7219/6-1 “Venus” in the Barents Sea was dry.
Dry well in the North Sea
30/05/2024 Aker BP drilled the dry well 24/6-5 “Alvheim Deep” in the North Sea.