NORWAY · WELLBORES · NPDID 4735
25/9-2 S
Exploration · Wildcat · P&A · Dry · Esso Exploration and Production Norway A/S · PL 189
25/9-2 S is a wildcat exploration wellbore in the North Sea, drilled by Esso Exploration and Production Norway A/S, entered Jul 18, 2003, to 2,250 m in the Burton Fm.
- 2,250
- m total depth · 2,139 m vertical
- 122
- m water depth
- Jul 18, 2003
- entered · completed Aug 3, 2003
- Burton Fm
- at total depth · Early Jurassic
- —
- m of core
- —
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED FEB 20, 2026 · RELEASED AUG 3, 2005
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- DEEPSEA TRYM · Semisub steel
- Drilling days
- 17
- Kelly bushing elevation
- 25 m
- Maximum inclination
- 28°
- Drilling permit
- 1056-L
- Licensing round
- 14
- Plugged and abandoned
- —
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 59.38229° N, 2.69636° E
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Wildcat well 25/9-2 S is located east of the Jotun and the Ringhorne fields and had the Middle Jurassic Brent reservoir in
a stratigraphic pinch-out trap as the primary target. Initial "Shallow Hazard Site Survey" indicated moderate probability of shallow gas. The surface location was therefore moved 490 m to an area showing low probability of shallow gas. The result was the need to drill a deviated well with maximum sail angle of 26.44 degrees. A 9 5/8" slim hole well design was chosen instead of a 13 3/8" surface casing design, based on earlier experience in the field, and due to no production testing planned for the well. In the deviated well path a potential shallow gas interval was identified pre-drill, by a seismic amplitude anomaly at approximately 930 m.
Operations and results
Well 25/9-2 S was spudded with the semi-submersible installation Deepsea Trym on 18 July 2003 and drilled to TD at 2250 m in the Early Jurassic Burton Formation. The shallow section at 930 m was drilled with a 9 7/8'' pilot hole. No shallow gas was encountered. The well was drilled with seawater and hi-vis sweeps down to 1055 m and with Versavert oil based mud from 1055 m to TD.
A thin water-wet sand of Callovian age (Hugin Formation) was encountered at 2183 m. The Brent reservoir was not present as prognosed and no hydrocarbons were identified. MWD was the only logging program run in the well. No coring, wire line logging, or fluid sampling was performed in the well as no hydrocarbon sand was encountered.
The well was permanently abandoned on 3 August 2003 as a dry well.
Testing
No drill stem test was performed
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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