NORWAY · WELLBORES · NPDID 363
25/8-2
Exploration · Wildcat · P&A · Dry · Esso Exploration and Production Norway A/S · PL 027
25/8-2 is a wildcat exploration wellbore in the North Sea, drilled by Esso Exploration and Production Norway A/S, entered Sep 9, 1975, to 2,578 m in the Statfjord Gp.
- 2,578
- m total depth
- 126
- m water depth
- Sep 9, 1975
- entered · completed Oct 1, 1975
- Statfjord Gp
- at total depth · Late Triassic
- —
- m of core
- 63
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED FEB 20, 2026 · RELEASED OCT 1, 1977
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- ROSS RIG (1) · Semisub steel
- Drilling days
- 23
- Kelly bushing elevation
- 25 m
- Maximum inclination
- 0°
- Drilling permit
- 139-L
- Licensing round
- 2-A
- Plugged and abandoned
- —
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 59.39547° N, 2.37689° E
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 25/8-2 was drilled on the Heimdal Terrace in the North Sea.The objective was to test Jurassic and Paleocene age sands located within a structural closure.
Operations and results
Wildcat well 25/8-2 was spudded with the semi-submersible installation Ross Rig on 9 September 1975 and drilled to TD at 2578 m in Late Triassic sediments of the Statfjord Formation. No significant drilling problems were encountered. Initial drilling from the sea floor to 1268 m was with sea water and gel. Below 1268 m sea water and lignosulphonate mud system was used.
The well penetrated good reservoir sands as predicted, but they were water bearing. No Danian or Cretaceous sediments were present. Paleocene sediments (Ty Formation) lie unconformable on the Middle Jurassic Sleipner Formation in the well. A small gas show (methane) was found in the top of the Miocene (Utsira Formation) and scattered oil stained sand grains were found in the upper part of Paleocene. No other shows were encountered in the well.
No cores were cut and no wire line fluid samples were taken.
The well was permanently abandoned on 1 October 1975 as a dry 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.
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