3/8-1 is a wildcat exploration wellbore in the North Sea, drilled by Lundin Norway AS, entered Oct 29, 2010, to 4,070 m in the Rotliegend Gp.
- 4,070
- m total depth · 4,070 m vertical
- 65.5
- m water depth
- Oct 29, 2010
- entered · completed Dec 29, 2010
- Rotliegend Gp
- at total depth · Early Permian
- —
- m of core
- —
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED FEB 20, 2026 · RELEASED OCT 16, 2012
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- MÆRSK GUARDIAN · Jack-up 3 legs
- Drilling days
- 62
- Kelly bushing elevation
- 42 m
- Maximum inclination
- 1.60000002°
- Drilling permit
- 1325-L
- Licensing round
- TFO2006
- Plugged and abandoned
- —
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 56.45470° N, 4.41869° E
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 3/8-1 was drilled on the Barchan prospect on the eastern side of the Søgne Basin in the North Sea, ca 3 km north of the Danish border. The primary objective was to prove reservoir potential and hydrocarbons in the Rotliegend Group of
the Barchan prospect. Secondary objectives were to test reservoir and hydrocarbon potentials in the Early Paleocene (Breeze lead) and in the Åsgard Formation (Bouma lead).
Operations and results
Wildcat well 3/8-1 was spudded with the jack-up installation Mærsk Guardian on 29 October 2010 and drilled to TD at 4070 m in the Permian Rotliegend Group. A precautionary 9 7/8" pilot hole was drilled from the 30" conductor shoe at 186 m down to 1203 m, below the 13 3/8" casing setting depth. No shallow gas was seen, but mud losses occurred in intervals from 186 m and from 403 m. No significant problem was encountered in the operations. The well was drilled with seawater and hi-vis sweeps down to 1203 m and with Versatec oil based mud from 1203 m to TD.
The well was found to be dry. Oil based mud made shows evaluation problematic but it was concluded that no significant hydrocarbon shows existed in the well. The low level of heavy gas components (butanes and pentanes) throughout the well supported the shows evaluation. The Early Paleocene Våle Formation was encountered at 2744 m and sands were present but water bearing. The Åsgard Formation was encountered at 3208 m but proved to be shale prone. The Rotliegend Group within the Barchan prospect was encountered at 4020.5 m. The Rotliegend was of poor (non-) reservoir quality and without hydrocarbon shows. In addition, the overlying halite of the Zechstein Group was found to be much thi
Around this wellbore
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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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