NORWAY · WELLBORES · NPDID 141
31/6-7
Exploration · Appraisal · Junked · Not applicable · Norsk Hydro Produksjon AS · Troll · PL 085
31/6-7 is an appraisal exploration wellbore in the North Sea, drilled by Norsk Hydro Produksjon AS, entered Apr 1, 1985, to 698 m in the Hordaland Gp.
Discovery 31/6-1 (Troll Øst) · On the map →
- 698
- m total depth · 698 m vertical
- 300
- m water depth
- Apr 1, 1985
- entered · completed Apr 13, 1985
- Hordaland Gp
- at total depth · Oligocene
- —
- m of core
- 25
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED APR 13, 1987
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- TREASURE SEEKER · Semisub steel
- Drilling days
- 13
- Kelly bushing elevation
- 25 m
- Maximum inclination
- 1.5°
- Drilling permit
- 459-L
- Licensing round
- Awarded additionally to round 7
- Plugged and abandoned
- —
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 60.55547° N, 3.67751° E
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Appraisal well 31/6-7 was drilled in the south-west corner of the Troll East gas province. The main objectives of the well was to determine the lateral extent of the reservoir, to determine the fluid contacts in the Sognefjord Formation and to obtain the best possible seismic correlation within the reservoir from well 31/6-1. If hydrocarbons were encountered the well would be tested to obtain a number of reservoir engineering parameters: permeabilities and skin, fluid samples, pressure/temperature drops in tubing at various flow rates, reservoir inflow at high flow rates, and behaviour of gravel pack at high rates.
Operations and results
Well 31/6-7 was spudded with the semi-submersible installation Treasure Seeker on 1 April 1985 and drilled to TD at 698 m in Oligocene sediments. After drilling the 26" hole to 694 m, and setting the 20" casing it was discovered that the angle of the 18 3/8" wellhead was 2.5 degrees and it was decided to junk the well. The well was permanently plugged and abandoned on 13 April 1985, and the rig was moved 50 m due north to spud replacement well 31/6-8.
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/141, documented in the API reference.