Delineation of the shut down Øst Frigg gas field and dry well northeast of the Alvheim field in the North Sea – 25/2-23 A and 25/2-23 S

deapsea-nordkapp-odfjelldrilling.jpg

The wells were drilled by the Deepsea Nordkapp drilling facility. Photo: Odfjell Drilling.

01/04/2022 Aker BP ASA, operator of production licence 873, has concluded the drilling of appraisal well 25/2-23 A (Øst Frigg Alfa) and wildcat well 25/2-23 S.

The wells were drilled about 45 kilometres northeast of the Alvheim field in the North Sea, around 220 kilometres northwest of Stavanger.

The Øst Frigg field was proven in reservoir rocks from the Eocene (the Frigg Formation) in 1973. Well 25/2-1 proved a 56-metre gas column and a 7-metre oil column.

The Plan for Development and Operation (PDO) was approved in 1984 and the field produced gas from 1988 to 1997. The oil column was too small to be recovered at that point in time.

The objective of well 25/2-23 A was to investigate the remaining oil potential in the shut down Øst Frigg field.

The well encountered a 3-metre oil column in the upper part of the Frigg Formation, in a sandstone layer of about 177 metres, with good reservoir quality. A 2-metre oil column was also encountered deeper in the same reservoir.

Preliminary resource estimates for Øst Frigg Alfa are between 0.1 and 1.1 million Sm3 of recoverable oil. Work is ongoing to evaluate the remaining oil potential throughout the entire Øst Frigg field.

The objective of well 25/2-23 S was to prove petroleum in rocks from the Middle Jurassic Age (the Tarbert Formation).

Well 25/2-23 S encountered around 187 metres of the Tarbert Formation, of which 75 metres are sandstone rocks with moderate reservoir quality. The well is dry.

The wells were not formation-tested, but data acquisition has been carried out.

These are the first and second exploration wells in production licence 873. The licence was awarded in APA 2016.

Wells 25/2-23 A and 25/2-23 S were drilled to respective measured depths of 2100 and 4827 metres below sea level, and respective vertical depths of 2050 and 4526 metres below sea level.

Well 25/2-23 A was terminated in the Frigg Formation from the Eocene Age and well 25/2-23 S was terminated in the Ness Formation from the Middle Jurassic Age.

Water depth at the site is 108 metres. The wells have been plugged and abandoned.

The wells were drilled by the Deepsea Nordkapp drilling facility, which will now drill a pilot well on shallow gas in production licence 028 B in the North Sea, where Aker BP ASA is the operator.

Map showing wells 25/2-23 A and S

 

 

Contact

Ola Anders Skauby

Director Communication, public affairs and emergency response

Tel: +47 905 98 519

Updated: 01/04/2022

Latest news

Delineation of discovery in the Norwegian Sea (6507/2-7 S)
03/10/2024 Aker BP has proven gas in appraisal well 6507/2-7 S in the Norwegian Sea, 230 kilometres west of Sandnessjøen.
Wants to open up tight reservoirs
01/10/2024 The Norwegian Offshore Directorate believes that new innovations within hydraulic fracturing should lead to the development of more discoveries in tight reservoirs. The Directorate is now challenging the industry to have a go at one of the largest puzzles of them all – the "Victoria" discovery in the Norwegian Sea.
Did you know that you can order the NCS map?
25/09/2024 The map shows all fields, discoveries, licensed area and area opened for exploration on the Norwegian continental shelf (NCS) . It also provides an overview of all production licences.
Oil and gas discovery in the North Sea (35/10-13 S)
24/09/2024 Equinor and its partner DNO have made an oil and gas discovery in the northern part of the North Sea.
Exploration activity has been profitable in all ocean areas
23/09/2024 A Norwegian Offshore Directorate analysis of exploration activity over the last 20 years (2004-2023) shows that the discoveries are valued at three times the costs expended.
Production figures August 2024
20/09/2024 Preliminary production figures for August 2024 show an average daily production of 1 982 000 barrels of oil, NGL and condensate.
Drilling permit for wellbore 6406/6-7 S
20/09/2024 The Norwegian Offshore Directorate has granted Equinor Energy AS drilling permit for wellbore 6406/6-7 S in production licence 1119, cf. Section 13 of the Resource Management Regulations.
Oil and gas discovery in the North Sea (15/3-13 S and 15/3-13 A)
17/09/2024 Equinor and its partners have made an oil and gas discovery in wildcat wells 15/3-13 S and 15/3-13 A on the Gudrun field in the North Sea.
Exploration seminar program finalised
10/09/2024 The Norwegian Offshore Directorate is organising an exploration seminar in Stavanger on 23-24 October. The agenda has now been announced.
Gas/condensate discovery in the Norwegian Sea (6406/2-L-2 H)
10/09/2024 Equinor and its partners have proven gas/condensate in development well 6406/2-L-2 H, 260 kilometres southwest of Brønnøysund.