Small oil discovery near the Gudrun field in the North Sea – 15/3-12 S and 15/3-12 A

02/03/2020 Equinor Energy AS, operator of production licence 025, has concluded the drilling of wildcat wells 15/3-12 S and 15/3-12 A in the central part of the North Sea.

The wells were drilled about 11 kilometres southeast of Gudrun, 4 kilometres southeast of the 15/3-4 (Sigrun) oil and gas discovery and 220 kilometres west of Stavanger. The wells were drilled as sole risk wells by Equinor Energy AS and Neptune Energy Norge AS.

The primary and secondary exploration targets for wildcat well 15/3-12 S were to prove petroleum in Middle and Upper Jurassic reservoir rocks (the Hugin and Draupne Formations), respectively.

The well encountered three separate oil-filled reservoir zones of 9, 4 and 9 metres in the Hugin Formation, which are about 100 metres thick. The reservoir zones mainly have moderate reservoir quality. The oil/water contacts were not encountered.

The exploration target for wildcat well 15/3-12 A was to prove petroleum in Upper and Middle Jurassic reservoir rocks (the Draupne and Hugin Formations), respectively. The well encountered the Draupne and Hugin Formations with respective thicknesses of about 85 and 120 metres. Both formations are water-bearing. There are indications of oil in a thin, three-metre sandstone layer in the Sleipner Formation in the Middle Jurassic.

Preliminary estimates place the size of the oil discovery between 1.0 and 2.7 million standard cubic metres (Sm3) of recoverable oil. Development of the discovery as a tie-in to the Gudrun field will be considered. 

No formation tests were performed, but extensive volumes of data have been collected and samples have been taken.

These are the 10th and 11th exploration wells in production licence 025. The licence was awarded in licensing round 2-A in 1969.

Wells 15/3-12 S and 15/3-12 A were drilled to respective vertical depths of 3652 and 3796 metres below sea level, and respective measured depths of 3771 and 3999 metres below sea level. Both wells were terminated in the Sleipner Formation in the Middle Jurassic. Water depth at the site is 109 metres. The wells have been permanently plugged and abandoned.

The wells were drilled by the West Phoenix drilling facility, which will now drill wildcat well 6507/8-10 S in production licence 889 in the Norwegian Sea, where Neptune Energy Norge AS is the operator.

Well showing the wellls 15/3-12 S and 15/3-12 A

 

Contact
Eldbjørg Vaage Melberg

Tel: +47 51 87 61 00

Updated: 03/03/2020

Latest news

Drilling permit for well 25/4-15
06/02/2023 The Norwegian Petroleum Directorate (NPD) has granted Aker BP ASA drilling permit for well 25/4-15, cf. Section 13 of the Resource Management Regulations.
Seabed minerals: Substantial resources on the Norwegian shelf
27/01/2023 The Norwegian Petroleum Directorate (NPD) has prepared a resource assessment of the seabed minerals on the Norwegian shelf.
Production figures December 2022
20/01/2023 Preliminary production figures for December 2022 show an average daily production of 1 983 000 barrels of oil, NGL and condensate.
Gas discovery near the Aasta Hansteen-field in the Norwegian Sea – 6605/1-2 S and 6605/1-2 A
18/01/2023 Equinor Energi AS, operator of production licence 1128, has concluded the drilling of wildcat well 6605/1-2 S and appraisal well 6605/1-2 A.
Drilling permit for well 15/2-2 S and 15/2-2 A
17/01/2023 The Norwegian Petroleum Directorate (NPD) has granted OMV (Norge) AS drilling permit for well 15/2-2 S and 15/2-2 A, cf. Section 13 of the Resource Management Regulations.
Changes in the regulations
13/01/2023 The Resource Management Regulations and Regulations relating to documentation in connection with storing CO2 on the shelf have been changed.
Six companies have applied for CO2 storage acreage
11/01/2023 The Norwegian Ministry of Petroleum and Energy (MPE) has received applications from six companies in connection with the announcement of an area in the North Sea for potential storage of CO2 on the Norwegian shelf.
Announcement: Acreage for CO2 storage on the Norwegian Continental Shelf
11/01/2023 On 11 of January 2023, the Ministry of Petroleum and Energy announced an area for CO2 storage pursuant to the CO2 Storage Regulations.
APA 2022: 25 companies offered ownership interests
10/01/2023 On 10 January 2023, 25 companies were offered ownership interests in a total of 47 production licences on the Norwegian shelf in the awards in predefined areas (APA) 2022.
Investments for the future on the Shelf
09/01/2023 Only rarely have we seen so much oil and gas produced on the Norwegian shelf as was the case last year – and only rarely have we seen such significant investment decisions.