NORWAY · WELLBORES · NPDID 404
31/6-4
Exploration · Appraisal · Junked · Not applicable · Den norske stats oljeselskap a.s · Troll · PL 085
31/6-4 is an appraisal exploration wellbore in the North Sea, drilled by Den norske stats oljeselskap a.s, entered Mar 5, 1984, to 820 m in the Balder Fm.
Discovery 31/6-1 (Troll Øst) · On the map →
- 820
- m total depth · 817 m vertical
- 305
- m water depth
- Mar 5, 1984
- entered · completed Mar 16, 1984
- Balder Fm
- at total depth · Eocene
- —
- m of core
- 37
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED MAR 16, 1986
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- DEEPSEA BERGEN decom · Semisub steel
- Drilling days
- 12
- Kelly bushing elevation
- 23 m
- Maximum inclination
- 12.75°
- Drilling permit
- 407-L
- Licensing round
- Awarded additionally to round 7
- Plugged and abandoned
- —
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 60.61835° N, 3.80566° E
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 31/6-4 was drilled in the southern part of the Troll East gas province. The main purpose was to appraise and test possible oil and gas accumulations in sandstones of Late to Middle Jurassic age.
Operations and results
Appraisal well 31/6-4 was spudded with the semi-submersible installation Deepsea Bergen on 5 March 1984 and drilled to TD at 820 m in Eocene sediments. After setting of the 30" casing a 12 1/4" pilot hole was drilled. When opening the pilot hole to 26" hole, the hole holed kicked off from the pilot hole and deviated to 12.75 deg. at 662 m. Because of the deviation it was decided to junk the well. The well was drilled with spud mud.
No cores were cut and no fluid samples taken.
The well was junked and abandoned on 16 March 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.
Developers: this page as JSON is GET /v1/data/norway/wells/404, documented in the API reference.