NORWAY · WELLBORES · NPDID 4141
25/7-6
Exploration · Appraisal · P&A · Oil shows · Norsk Hydro Produksjon AS · Alvheim · PL 203
25/7-6 is an appraisal exploration wellbore in the North Sea, drilled by Norsk Hydro Produksjon AS, entered Sep 13, 2000, to 2,250 m in the Heimdal Fm.
Discovery 25/7-5 · On the map →
- 2,250
- m total depth · 2,250 m vertical
- 124
- m water depth
- Sep 13, 2000
- entered · completed Oct 14, 2000
- Heimdal Fm
- at total depth · Paleocene
- 18.7
- m of core in 1 core
- 71
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED OCT 14, 2002
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- SCARABEO 6 · Semisub steel
- Drilling days
- 32
- Kelly bushing elevation
- 26 m
- Maximum inclination
- 1.39999998°
- Drilling permit
- 982-L
- Licensing round
- 15
- Plugged and abandoned
- —
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 59.48751° N, 2.01037° E
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 25/7-6 was drilled to appraise the Kobra oil discovery made by well 25/7-5 in 1997. The main objectives of the well were to prove sufficient volumes to be able to initiate an oil development, and to identify an oil-water contact in an at least 20 m thick Hermod T80 sand member of the Sele Formation.
Operations and results
Wildcat well 25/7-6 was spudded with the semi-submersible installation Scarabeo 6 on 13 September 2000 and drilled to TD at 2250 m, 100 m into the Paleocene Heimdal Formation. Problems with the hole packing of in the section from 226 m to ca 790 m caused some delay and problems with setting the 13 3/8" casing. Otherwise no significant drilling problems were encountered. The well was drilled with spud mud down to 1345 m and with Glydril mud from 1345 m to TD.
Thirteen m of water bearing Hermod T80 sandstone was encountered at 2069 m. The sandstone had no residual hydrocarbons, but oil shows were recorded on the core from the same interval. The Heimdal Formation was encountered at 2149.5 and was also water wet according to logs and the MDT pressure gradient
One core was cut from 2061 m to 2079.65 m in the Sele/Hermod Formation. No fluid samples were taken in the well.
The well was permanently abandoned on 14 October 2000 as a well with shows.
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/4141, documented in the API reference.