NORWAY · WELLBORES · NPDID 7662
25/6-5 S
Exploration · Wildcat · P&A · Gas/condensate · Total E&P Norge AS · PL 627
25/6-5 S is a wildcat exploration wellbore in the North Sea, drilled by Total E&P Norge AS, entered Mar 13, 2015, to 2,520 m in the Dunlin Gp.
Discovery 25/6-5 S (Skirne Øst) · On the map →
- 2,520
- m total depth · 2,391 m vertical
- 120
- m water depth
- Mar 13, 2015
- entered · completed Apr 10, 2015
- Dunlin Gp
- at total depth · Early Jurassic
- —
- m of core
- —
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED FEB 20, 2026 · RELEASED APR 10, 2017
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- LEIV EIRIKSSON · Semisub steel
- Drilling days
- 29
- Kelly bushing elevation
- 25 m
- Maximum inclination
- 35.20000076°
- Drilling permit
- 1565-L
- Licensing round
- TFO2011
- Plugged and abandoned
- —
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 59.59087° N, 2.76096° E
- Hydrocarbons in
- Hugin Fm · Middle Jurassic
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 25/6-5 S was drilled to test the Skirne East prospect on the northern part of the Utsira High in the North Sea. The primary objective was to prove hydrocarbon presence, determine fluid nature and evaluate reservoir characteristics in the Hugin Formation, Middle Jurassic age. The reservoir was expected mainly sandy with good reservoir characteristics.
Operations and results
Wildcat well 25/6-5 S was spudded with the semi-submersible installation Leiv Eiriksson on 13 March 2015 and drilled to TD at 2520 m (2391 m TVD) m in the Early Jurassic Dunlin Group. No significant problem was encountered during drilling. During P&A heavy vibrations, pressure drops and erratic torque occurred when cutting wellhead and housing.
Lower section of cutter assembly was lost in hole. Anchored lines were disconnected prior to run a second cutter assembly. Same issues were encountered and finally a section of the BHA was lost in hole. It was decided to leave location and retrieve wellhead later with a vessel. The well was drilled with seawater and hi-vis pills down to 218 m, with Glydril mud from 218 m to 2378 m, and with KCl/polymer mud from 2378 m to TD.
Top Hugin Formation is at 2458 (2332 m TVD) and contain a 37 m thick sandy reservoir, gas/condensate bearing. A gas-water contact was established at 2468 m (2341 m TVD). No shows are recorded in the well other than in the hydrocarbon bearing Hugin reservoir.
No cores were cut and no fluid sample was taken in the well. LWD pressure measurements indicate that the water leg is 36.6 bar depleted compared to the initial aquifer pressure documented in the 25/5-3 (Skirne) exploration due to produ
Around this wellbore
This wellbore on Sodir FactPages → · Press release →
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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