NORWAY · WELLBORES · NPDID 195
25/1-2
Exploration · Appraisal · P&A · Oil/gas · Elf Petroleum Norge AS · Frigg · PL 024
25/1-2 is an appraisal exploration wellbore in the North Sea, drilled by Elf Petroleum Norge AS, entered Jul 22, 1971, to 2,772 m in the Shetland Gp.
Discovery 25/1-1 Frigg · On the map →
- 2,772
- m total depth
- 103
- m water depth
- Jul 22, 1971
- entered · completed Aug 25, 1971
- Shetland Gp
- at total depth · Late Cretaceous
- —
- m of core
- 72
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED AUG 25, 1973
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- PENTAGONE 81 · Semisub steel
- Drilling days
- 35
- Kelly bushing elevation
- 24 m
- Maximum inclination
- 6°
- Drilling permit
- 58-L
- Licensing round
- 2-A
- Plugged and abandoned
- —
- Core samples available
- Yes
- Cuttings samples available
- No
- Position · ED50
- 59.93556° N, 2.08183° E
- Hydrocarbons in
- Frigg Fm · Eocene
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 25/1-2 was drilled to appraise the 25/1-1 Frigg Discovery in the North Sea. The primary objective was to test the Eocene Frigg Formation sandstone.
Operations and results
Wildcat well 25/1-2 was spudded with the semi-submersible installation Pentagone 81 on 22 July 1971 and drilled to 1159 m where the tool stuck. The well was then sidetracked from 719 m and drilled to TD at 2772 m in the Late Cretaceous Shetland Group. The well was drilled with a water-LFC mud system.
The Frigg Formation sandstone was encountered at 1948 m. The Frigg sandstones were gas filled down to the gas/oil contact at 1974 and oil filled to the oil/water contact at 1983 m. Thin sandstones and sandstone stringers in the interval 2441 to 2513 m had good oil shows.
No cores were cut. FIT fluid samples were taken at 1984 m (oil and gas), 1986.3 m (oil, filtrate and gas), 1993.5 m (oil, filtrate and gas), 2503 m (filtrate and trace oil), and 2508.5 m (filtrate and trace oil),
The well was permanently abandoned on 25 August as an oil and gas appraisal well.
Testing
No drill stem test was performed.
Around this wellbore
This wellbore on Sodir FactPages →
About this data
Norwegian Offshore Directorate (Sodir) FactPages, mirrored nightly and used under the Norwegian Licence for Open Government Data (NLOD). Depths are metres along the wellbore from the kelly bushing unless a row gives its own unit; older cores are filed in feet. A zero the Directorate files for an unmeasured pressure, density, or temperature is shown as a dash.
Developers: this page as JSON is GET /v1/data/norway/wells/195, documented in the API reference.