NORWAY · WELLBORES · NPDID 9185
31/2-22 S
Exploration · Wildcat · P&A · Oil · Equinor Energy AS · Fram · PL 090 I
31/2-22 S is a wildcat exploration wellbore in the North Sea, drilled by Equinor Energy AS, entered Dec 9, 2020, to 2,380 m in the Heather Fm.
Discovery 31/2-22 S (Blasto) · On the map →
- 2,380
- m total depth · 2,313 m vertical
- 349
- m water depth
- Dec 9, 2020
- entered · completed Mar 3, 2021
- Heather Fm
- at total depth · Middle Jurassic
- 154.7
- m of core in 3 cores
- 90
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED MAR 3, 2023
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- WEST HERCULES · Semisub steel
- Drilling days
- 32
- Kelly bushing elevation
- 31 m
- Maximum inclination
- 22.20000076°
- Drilling permit
- 1838-L
- Licensing round
- TFO2017
- Plugged and abandoned
- Mar 3, 2021
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 60.97999° N, 3.50468° E
- Hydrocarbons in
- Sognefjord Fm · Late Jurassic
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 31/2-22 was drilled to test the Blasto prospect located on the Lomre Terrace close to the Fram and Troll Fields in the North Sea. Blasto is in a rotated fault block setting up-dip of the dry 31/2-8 well located in the same structure. The primary objective is the Late Jurassic shallow marine Sognefjord Formation. Secondary objective was to evaluate the Fensfjord Formation.
Operations and results
Wildcat well 31/2-22 S was drilled with the semi-submersible installation West Hercules. A pilot hole was drilled from seabed to 477 m. No shallow gas was observed. The main well was initiated on 13 November 2020 by opening to 26" hole, which was drilled to 730 m. Minor shallow water flow was observed but the flow died out. The 20" casing was set and cemented. Well 31/1-2 S (Røver Nord) was then drilled, before drilling the rest of the 31/2-22 S to TD at 2379 m (2313 m TVD) m in the Middle Jurassic, Heather Formation. Technical problems with the BOP caused close to 4 days down time, otherwise operations proceeded without significant problems. The well was drilled with seawater and hi-vis pills down to 730 m and with Glydril mud from 730 m to TD.
Fractured carbonate in the Hardråde Formation proved to be gas bearing. The formation is difficult to evaluate hence the result are uncertain. Top Upper Sognefjord Formation was encountered at 1907 m (1859 m TVD) and proved to be oil bearing with a water leg. A second oil column was found in the Lower Sognefjord Formation also with a water leg. The reservoirs are pressure depleted ca 25 bars compared to virgin pressure due to production on the Troll Field. The Fensfjord Formation was water bearing. No shows were described above top Sognefjord. Oil shows
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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