NORWAY · WELLBORES · NPDID 8947
15/3-12 S
Exploration · Wildcat · P&A · Oil · Equinor Energy AS · PL 025
15/3-12 S is a wildcat exploration wellbore in the North Sea, drilled by Equinor Energy AS, entered Dec 3, 2019, to 3,810 m in the Sleipner Fm.
Discovery 15/3-12 S (Sigrun Øst) · On the map →
- 3,810
- m total depth · 3,691 m vertical
- 109
- m water depth
- Dec 3, 2019
- entered · completed Jan 20, 2020
- Sleipner Fm
- at total depth · Middle Jurassic
- 108.2
- m of core in 2 cores
- —
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED APR 14, 2026 · RELEASED JAN 20, 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
- 49
- Kelly bushing elevation
- 38.6 m
- Maximum inclination
- 0°
- Drilling permit
- 1797-L
- Licensing round
- 2-A
- Plugged and abandoned
- Jan 20, 2020
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 58.78146° N, 1.90373° E
- Hydrocarbons in
- Hugin Fm · Middle Jurassic
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 15/3-12 S was drilled to test the Sigrun East Hugin prospect on the Gudrun Terrace in the North Sea. The primary and secondary exploration targets for wildcat well 15/3-12 S were to prove petroleum in Middle Jurassic Hugin Formation reservoir rocks.
Operations and results
Wildcat well 15/3-12 S was spudded with the semi-submersible installation West Phoenix on 3 December 2019 and drilled to TD at 3810 m (3691 m TVD) m in the Middle Jurassic Sleipner Formation. Operations proceeded without significant problems. The well was drilled with seawater and hi-vis pills down to 1010 m, with Glydril mud from 1010 m to 2374 m, and with Exploradrill oil-based mud from 2374 m to TD.
The well encountered three separate oil-filled reservoir zones from 3647 to 3660 m, 3680 to 3683 m, and 3703 to 3733 m in the Hugin Formation. The three zones lie on different pressure gradients. The reservoir zones mainly have moderate reservoir quality. The oil/water contacts were not penetrated in the well. Oil shows in the well were observed only in the Hugin Formation between 3652 to 3729 m.
Two cores were cut with 100% recovery in the Hugin and Sleipner formations. Core 1 was cut from 3652 to 3706 m and core 2 was cut from 3706 to 3760 m. The core-log depth shifts are 1.9 m for core 1 and 1.7 m for core 2. MDT fluid samples were taken at 3647.5 m (oil), 3681.1 m (oil), 3698 m (water), and 3704.2 m (oil).
The well was permanently abandoned on 14 January 2020 as an oil discovery.
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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