NORWAY · WELLBORES · NPDID 5608
15/12-18 A
Exploration · Wildcat · P&A · Oil · Det norske oljeselskap ASA (old) · PL 337
15/12-18 A is a wildcat exploration wellbore in the North Sea, drilled by Det norske oljeselskap ASA (old), entered Nov 8, 2007, to 3,036 m in the Tor Fm.
Discovery 15/12-18 A · On the map →
- 3,036
- m total depth · 2,678 m vertical
- 90.5
- m water depth
- Nov 8, 2007
- entered · completed Dec 11, 2007
- Tor Fm
- at total depth · Late Cretaceous
- —
- m of core
- 86
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED FEB 20, 2026 · RELEASED DEC 11, 2009
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- MÆRSK GIANT · Jack-up 3 legs
- Drilling days
- 34
- Kelly bushing elevation
- 43 m
- Maximum inclination
- 42°
- Drilling permit
- 1151-L
- Licensing round
- TFO2004
- Plugged and abandoned
- —
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 58.21474° N, 1.77790° E
- Hydrocarbons in
- Heimdal Fm · Paleocene
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 15/12-18 A is located between the Sleipner Øst and Varg fields in the North Sea. It was drilled to appraise the Paleocene oil discovery made in 15/12-18 S.
Operations and results
Well 15/12-18 A was kicked off from below the 13 3/8" casing shoe at 1170 m in well 15/12-18 S on 8 November 2007. Inclination was built to 41 degrees, which was achieved at 1733 m. Final TD was reached at 3036 m in the Late Cretaceous Tor Formation. The well was drilled with the jack-up installation Mærsk Giant. It was impossible to run wire line logs past the kick off area and therefore only LWD logs were obtained from 15/12-18 A. Otherwise no significant problem was encountered in the operations. The well was drilled with Enviromul oil based mud from kick-off to TD.
The well was drilled into Top Heimdal reservoir at 2884 m where hydrocarbons were encountered in two 2 m thick sands. The targeted Ty Formation was encountered 10 m thick at 2952 m (2613 m TVD). The sand was, however, found below the OWC established in 15/12-18 S and was water bearing. Apart from the Heimdal Formation reservoir shows were observed only on claystones in the interval 2600 - 2690 m.
No cores were cut and no wire line fluid samples were taken in this well bore.
The well was permanently abandoned on 11 December 2009 as a discovery well.
Testing
No drill stem test was performed.
Around this wellbore
This wellbore on Sodir FactPages → · Press release →
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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