NORWAY · WELLBORES · NPDID 273
2/8-4
Exploration · Appraisal · P&A · Oil · Amoco Norway Oil Company · Valhall · PL 006
2/8-4 is an appraisal exploration wellbore in the North Sea, drilled by Amoco Norway Oil Company, entered Apr 28, 1973, to 2,852 m in the Rødby Fm.
Discovery 2/8-6 Valhall · On the map →
- 2,852
- m total depth
- 70
- m water depth
- Apr 28, 1973
- entered · completed Jun 7, 1973
- Rødby Fm
- at total depth · Early Cretaceous
- —
- m of core
- 86
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED JUN 7, 1975
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- ZAPATA EXPLORER · Jack-up 3 legs
- Drilling days
- 41
- Kelly bushing elevation
- 34 m
- Maximum inclination
- 0°
- Drilling permit
- 83-L
- Licensing round
- 1-A
- Plugged and abandoned
- —
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 56.29828° N, 3.34391° E
- Hydrocarbons in
- Hod Fm · Late Cretaceous
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 2/8-4 was drilled on the Valhall structure in the Southern North Sea
Operations and results
Wildcat well 2/8-4 was spudded with the jack-up installation Zapata Explorer on 28 April 1973 and drilled to TD at 2852 m.
Top Shetland Group was encountered with oil shows at 2577 m. The Shetland Group had only one meter of Tor Formation on top of the Hod Formation.
Three very short cores were cut: core 1 from 2607.3 to 2698.2 m, core 2 from 2597.8 to 2598.7 m, and core 3 from 2584.1 m to 2585 m. No wire line fluid samples were taken.
The well was permanently abandoned on 7 June 1973, initially as a dry well with shows. After the 2/8-6 Valhall discovery well two years later it was re-classified to oil appraisal well.
Testing
Two drill stem tests were performed. In both tests the chalk was stimulated by acid.
DST 1 tested the interval 2603 to 2622.5 m. The test produced 5.7 m3 load water during a 6.5 hrs flow
DST 2 tested the interval 2578.6 to 2587.8 m. This test produced 2.5 m3 load water and 0.5 Sm3 26 deg API oil during a 12 hrs flow.
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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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