NORWAY · WELLBORES · NPDID 8948
15/3-12 A
Exploration · Wildcat · P&A · Dry · Equinor Energy AS · PL 025
15/3-12 A is a wildcat exploration wellbore in the North Sea, drilled by Equinor Energy AS, entered Jan 21, 2020, to 4,037 m in the Sleipner Fm.
- 4,037
- m total depth · 3,833 m vertical
- 109
- m water depth
- Jan 21, 2020
- entered · completed Mar 3, 2020
- Sleipner Fm
- at total depth · Middle Jurassic
- —
- m of core
- —
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED APR 15, 2026 · RELEASED MAR 3, 2022
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- WEST PHOENIX · Semisub steel
- Drilling days
- 43
- Kelly bushing elevation
- 38.6 m
- Maximum inclination
- 0°
- Drilling permit
- 1798-L
- Licensing round
- 2-A
- Plugged and abandoned
- Mar 3, 2020
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 58.78146° N, 1.90373° E
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 15/3-12 A is a geological side-track to well 15/3-12 S, which discovered oil in the Sigrun East Hugin prospect on the Gudrun Terrace in the North Sea. Side-track 15/3-12 A was drilled to the Sigrun East Draupne prospect located west of the primary well and south of the Sigrun Field. The primary objective of 15/3-12 A was to verify down-flank continuation of the Hugin Formation reservoir and find the related hydrocarbon contacts. The secondary objective was to verify presence of Intra-Draupne Formation reservoir and hydrocarbons in same.
Operations and results
Wildcat well 15/3-12 A was kicked off on 19 January 2020 from the main well at 2100 m in Lower Hordaland Group. It was drilled with the semi-submersible installation West Phoenix to 3593 m (3428 m TVD) in the Cromer Knoll Group. While POOH with 12 ¼” drilling BHA, the drill string got stuck at 2756 m in Ty sand. The BHA could not be freed and a technical side-track 15/3-12 A T2 was initiated with kick-off at 2215 m. Large amounts of caved cuttings was produced during kick-off. Drilling proceeded to final TD at 4038 m (3834 m TVD) in the Middle Jurassic Sleipner Formation. Both 15/3-12 A and 15/3-12 A T2 were drilled using Exploradrill oil-based mud from kick-off to TD.
The Hugin reservoir was water filled and only cemented sand stringers were penetrated in the Draupne Formation. No oil shows were described in the well. Combined pressure data from the 15/12-3 S and 15/12-3 A T2 well indicated the following hydrocarbon contacts in the Hugin Formation: Free Water Level at 3614.6 m TVD in the upper reservoir unit, OWC at 3570 m TVD in the middle unit, and Free Water Level at 3605.4 m TVD in the lower unit. The contacts are based on pressure d
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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