NORWAY · WELLBORES · NPDID 523
34/10-25
Exploration · Appraisal · P&A · Dry · Den norske stats oljeselskap a.s · Gullfaks · PL 050
34/10-25 is an appraisal exploration wellbore in the North Sea, drilled by Den norske stats oljeselskap a.s, entered Aug 6, 1985, to 600 m in the Nordland Gp.
Discovery 34/10-1 Gullfaks · On the map →
- 600
- m total depth · 600 m vertical
- 143
- m water depth
- Aug 6, 1985
- entered · completed Aug 17, 1985
- Nordland Gp
- at total depth · Pliocene
- —
- m of core
- 29
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED MAR 27, 2026 · RELEASED AUG 17, 1987
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- DEEPSEA BERGEN decom · Semisub steel
- Drilling days
- 12
- Kelly bushing elevation
- 23 m
- Maximum inclination
- 1°
- Drilling permit
- 477-L
- Licensing round
- Awarded additionally to round 3
- Plugged and abandoned
- —
- Core samples available
- Yes
- Cuttings samples available
- No
- Position · ED50
- 61.20322° N, 2.20355° E
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Appraisal well 34/10-25 was drilled to test possible shallow gas accumulation in sandstones at the location for the Gullfaks B platform. The targets were several sand layers of Pliocene age. Gas had been indicated on seismic anomalies and logs from other wells in the same field.
Operations and results
Well 34/10 was spudded with the semi-submersible installation Deepsea Bergen on 6 August 1985 and drilled to TD at 600 m in Pliocene sediments in the Nordland Group. No significant problem was encountered in the operations. The well was drilled with water based mud.
Top Pliocene was encountered at 302 m. No indication of shallow gas was observed in the well. The well penetrated one sand layer only, from 518.9 to 522 m. The sand was water bearing. Biostratigraphical investigations proved only fauna of Pleistocene and Pliocene age.
No cores were cut and no wire line fluid samples were taken. A full set of conventional logs where run. Maximum bottom hole temperature on wire line, measured 4 hours after circulation was 29.4 deg C. Cuttings samples were taken every 5 m from 230 m to TD.
The well was permanently abandoned on 17 August 1985.
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.
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