1/3-13 is a wildcat exploration wellbore in the North Sea, drilled by OMV (Norge) AS, entered Jun 16, 2021, to 3,341 m in the Tor Fm.
- 3,341
- m total depth · 3,338 m vertical
- 71
- m water depth
- Jun 16, 2021
- entered · completed Jul 7, 2021
- Tor Fm
- at total depth · Late Cretaceous
- —
- m of core
- —
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED FEB 20, 2026 · RELEASED MAR 1, 2023
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- MAERSK INTEGRATOR · Jack-up 3 legs
- Drilling days
- 22
- Kelly bushing elevation
- 53 m
- Maximum inclination
- 5.4000001°
- Drilling permit
- 1863-L
- Licensing round
- TFO2018
- Plugged and abandoned
- Jul 7, 2021
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 56.84802° N, 2.74065° E
- Hydrocarbons in
- Forties Fm · Paleocene
- Hydrocarbons in
- Andrew Fm · Paleocene
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 1/3-13 was drilled to test the Ommadawn prospect on the border between the Hidra High and the Breiflabb Basin in the North Sea. The well was drilled near the 1/3-11 (Ipswich) oil discovery from 2008, which found oil in the Forties and Andrew formations. The primary objective of 1/3-13 was to test the hydrocarbon potential of the Tor Formation.
Operations and results
Wildcat well 1/3-13 was spudded with the jack-up installation Maersk Integrator on 16 June 2021 and drilled to TD at 3341 m the Late Cretaceous Tor Formation. Drilling started with a pilot hole down to 920 m to check for shallow gas. Boulders were encountered at 270 m and 10 hrs were lost due to stuck pipe at this point. No shallow gas was encountered. The main well was initiated on 18 June. Losses occurred at TD, possibly related to a fault. Due to this and a dry Tor Formation the well was TD'd. The well was drilled with seawater and hi-vis pills down to 796 m and with Rheguard oil-based mud from 796 m to TD.
The target Tor Formation was encountered water-wet at 3238 m. However, unexpectedly the well encountered hydrocarbon bearing sands in the overlying Forties and Andrew formations from 3025 to 3037 m and 3073 to 3093 m, respectively. No pressure points or fluid samples were acquired in these sands, so pressure communication with the Forties and Andrea sands in the 13/1-11 Ipswich discovery could not be confirmed. The fluid type was interpreted as oil based on LWD logs and gas readings.
In the cuttings no shows could be distinguished above the OBM background fluorescence.
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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