NORWAY · WELLBORES · NPDID 280
2/8-10
Exploration · Appraisal · P&A · Oil · Amoco Norway Oil Company · Valhall · PL 006
2/8-10 is an appraisal exploration wellbore in the North Sea, drilled by Amoco Norway Oil Company, entered Jun 30, 1976, to 2,683 m in the Rødby Fm.
Discovery 2/8-6 Valhall · On the map →
- 2,683
- m total depth · 2,682 m vertical
- 69
- m water depth
- Jun 30, 1976
- entered · completed Aug 29, 1976
- Rødby Fm
- at total depth · Early Cretaceous
- 21.9
- ft of core in 4 cores
- 69
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED AUG 29, 1978
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- SEDCO 135 G · Semisub steel
- Drilling days
- 61
- Kelly bushing elevation
- 33 m
- Maximum inclination
- 0°
- Drilling permit
- 157-L
- Licensing round
- 1-A
- Plugged and abandoned
- —
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 56.26481° N, 3.41634° E
- Hydrocarbons in
- Tor Fm · Late Cretaceous
- Hydrocarbons in
- Hod Fm · Late Cretaceous
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 2/8-10 was drilled as a field delineation well intended to help establish the commerciality of the Valhall Field, which was discovered by well 2/8-6 and confirmed by wells 2/8-8 and 2/8-9. The main purpose of 2/8-10 was to evaluate the Tor and Upper Hod reservoirs on the south eastern flank of the Valhall structure.
Operations and results
Appraisal well 2/8-10 was spudded with the semi-submersible installation Sedco 135 G on 30 June 1976 and drilled to TD at 2682 m in the Early Cretaceous Rødby Formation. The well was drilled with seawater and bentonite down to 375 m, and with seawater/lime/Drispac mud from 375 m to TD.
The objective reservoirs, developed in chalk of the Tor and Hod Formations, were encountered at depths of 2476.5 m and 2516 m respectively. A gross pay interval of 77 m was encountered. The Tor Formation was approximately 38 m thick with an oil saturation of 95% and was tested at rates of up to 1000 Sm3/day. The upper Hod reservoir, approximately 38 m thick, was found to be hydrocarbon bearing, although oil saturations were low, averaging 25% and the reservoir was tested at up to 67 Sm3/day. As anticipated, the lower Hod reservoir was wet.
Only insignificant, although fairly consistent, oil shows were encountered in the Hordaland and Rogaland Groups. Excellent shows were recorded in the Tor Formation. The quality of the shows decreased gradually through the upper part of the Hod Formation and only minor oil shows were encountered below 2570 m.
Four conventional cores were cut in the interval 2477.1 m to 2508.5 m with an overall recovery of 70%. No wire line fluid samples were taken.
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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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