NORWAY · WELLBORES · NPDID 2179
34/8-10 S
Exploration · Appraisal · P&A · Oil · Norsk Hydro Produksjon AS · Visund · PL 120
34/8-10 S is an appraisal exploration wellbore in the North Sea, drilled by Norsk Hydro Produksjon AS, entered Sep 28, 1993, to 3,470 m in the Lunde Fm.
Discovery 34/8-1 Visund · On the map →
- 3,470
- m total depth · 3,316 m vertical
- 326
- m water depth
- Sep 28, 1993
- entered · completed Dec 9, 1993
- Lunde Fm
- at total depth · Late Triassic
- 203.2
- m of core in 23 cores
- 122
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED DEC 9, 1995
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- POLAR PIONEER · Semisub steel
- Drilling days
- 73
- Kelly bushing elevation
- 23 m
- Maximum inclination
- 44.79999924°
- Drilling permit
- 768-L
- Licensing round
- 10-A
- Plugged and abandoned
- —
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 61.35481° N, 2.45542° E
- Hydrocarbons in
- Brent Gp · Middle Jurassic
- Hydrocarbons in
- Dunlin Gp · Early Jurassic
- Hydrocarbons in
- Lunde Fm · Late Triassic
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 34/8-10 S was drilled to appraise the 34/8-1 Visund discovery on Tampen Spur in the Northern North Sea. The objectives were to confirm the presence of mobile hydrocarbons and the pressure regime in the SI segment (Statfjord Formation); to confirm the absence of free gas cap and also pressure regime and fluid composition in the NI segment (BrentGroup); to improve stratigraphic control of base Cretaceous, the A-Central Fault, top Statfjord and top Lunde; and to characterise the Lunde B/C aquifer and pressure regime.
Operations and results
Appraisal well 34/8-10 S was spudded with the semi-submersible installation Polar Pioneer on 28 September 1993 and drilled to TD at 3470 m (3316 m TVD) in the Late Triassic Lunde Formation. The well was drilled with an angle of 37 degrees through the reservoir to achieve the objectives. It was drilled with seawater and hi-vis pills down to 1358 m, and with Anco 2000 glycol mud from 1358 m to TD.
The well penetrated oil-bearing sandstones in all the potential reservoirs: Brent-NI, Amundsen-SI, Statfjord-SI and Lunde-SI. The Brent Group was penetrated at 2879.5 m in a heavily faulted area. It was represented by the Rannoch Formation from 2879.5 to 2885 m and by Etive Formation from 2888 to 2896.5 m with a fault slice identified as Drake Formation in between (2885-2888 m). A gross reservoir thickness of 14 m was defined, giving a net pay of 10 m. The pressure in the Brent Group was found to be higher than previously documented, and in addition the oil was of a lighter composition. No free gas cap was found in the Brent sandstones.
The Amundsen Sandstone was not expected to be penetrated as the well was planned to cut the A-Central fault ve
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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