NORWAY · WELLBORES · NPDID 503
31/2-4 R2
Exploration · Appraisal · P&A · Oil/gas · A/S Norske Shell · Troll · PL 054
31/2-4 R2 is an appraisal exploration wellbore in the North Sea, drilled by A/S Norske Shell, entered Nov 4, 1982, to 5,035 m in the Hegre Gp.
Discovery 31/2-1 (Troll Vest) · On the map →
- 5,035
- m total depth · 5,035 m vertical
- 336
- m water depth
- Nov 4, 1982
- entered · completed Nov 12, 1982
- Hegre Gp
- at total depth · Early Triassic
- —
- m of core
- 141
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED NOV 12, 1984
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- BORGNY DOLPHIN · Semisub steel
- Drilling days
- 9
- Kelly bushing elevation
- 25 m
- Maximum inclination
- 4°
- Drilling permit
- 261-L3
- Licensing round
- 4
- Plugged and abandoned
- Nov 12, 1982
- Core samples available
- No
- Cuttings samples available
- No
- Position · ED50
- 60.85655° N, 3.51231° E
- Hydrocarbons in
- Sognefjord Fm · Late Jurassic
- Hydrocarbons in
- Fensfjord Fm · Middle Jurassic
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 31/2-4 was originally drilled with Borgny Dolphin down to 815 m in 1980. The well was however suspended due to a blow out on 34/10-10. Well 31/2-4 was re-entered with the same rig in October 1980 and drilled to TD at 5035 m. After Logging at TD the rig went on hire to Shell UK Exploration and Production. The well was suspended in April 1981 for possible testing and abandonment at a later stage. The decision was made not to test the well so the purpose of this second re-entry (31/2-4 R2) was plugging and permanent abandonment
Operations and results
Wildcat well 31/2-4 was re-entered for the second time (31/2-4 R2) with the semi-submersible installation Borgny Dolphin on 4 November 1982.
The well was plugged and permanently abandoned on 12 November 1982 as a gas and oil appraisal well.
Testing
No drill stem test was performed in the well.
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/503, documented in the API reference.