25/11-29 S is a wildcat exploration wellbore in the North Sea, drilled by Aker BP ASA, entered May 1, 2019, to 2,313 m in the Zechstein Gp.
- 2,313
- m total depth · 2,263 m vertical
- 121
- m water depth
- May 1, 2019
- entered · completed May 13, 2019
- Zechstein Gp
- at total depth · Permian
- —
- m of core
- —
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED FEB 20, 2026 · RELEASED APR 1, 2020
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- DEEPSEA STAVANGER · Semisub steel
- Drilling days
- 13
- Kelly bushing elevation
- 30 m
- Maximum inclination
- 0°
- Drilling permit
- 1759-L
- Licensing round
- TFO2017
- Plugged and abandoned
- May 13, 2019
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 59.04680° N, 2.43939° E
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 25/11-29 S was drilled to test the JK prospect on the Utsira High north of the Johan Sverdrup Field and south of the Grane Field in North Sea. The primary objective was to test the hydrocarbon potential in sandstones of the Early Jurassic Statfjord Group. Secondary objective was to test the Paleocene Heimdal Formation.
Operations and results
Wildcat well 25/11-29 S was spudded with the semi-submersible installation Deepsea Stavanger on 1 May 2019 and drilled to TD at 2313 m in metamorphic basement rock. An 8 ½” pilot hole was drilled simultaneously with the main bore (dual drilling) to acquire good quality log data in the shallow section and to check for shallow hazards. The pilot is drilled 10 m from the main bore, and always ahead of the main bore. No shallow hazards were encountered. Operations proceeded without significant problems. The well was drilled with seawater and hi-vis pills down to 1177 m and with Innovert oil-based mud from 1177 m to TD.
The main target (Statfjord Group) came in on prognosis with good reservoir quality but was water wet. The secondary target (Heimdal Formation) was not present at the well location. In addition to the target reservoirs good reservoir sands were penetrated in the Grid Formation (13 m thick) and the Skagerrak Formation (23 m net sandstone). No oil shows were recorded in the well.
No cores were cut. No fluid sample was taken.
The well was permanently abandoned on 13 May 2019 as a dry 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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