NORWAY · WELLBORES · NPDID 7270
4/4-1
Exploration · Wildcat · P&A · Dry · Repsol Exploration Norge AS · PL 541
4/4-1 is a wildcat exploration wellbore in the North Sea, drilled by Repsol Exploration Norge AS, entered Sep 13, 2013, to 2,012 m in the Tor Fm.
- 2,012
- m total depth · 2,012 m vertical
- 62
- m water depth
- Sep 13, 2013
- entered · completed Oct 13, 2013
- Tor Fm
- at total depth · Late Cretaceous
- —
- m of core
- 68
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED FEB 20, 2026 · RELEASED OCT 13, 2015
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- MÆRSK GIANT · Jack-up 3 legs
- Drilling days
- 31
- Kelly bushing elevation
- 43 m
- Maximum inclination
- 1.79999995°
- Drilling permit
- 1475-L
- Licensing round
- TFO2009
- Plugged and abandoned
- —
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 56.63574° N, 5.13654° E
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 4/4-1 was drilled on the Brattholmen prospect in the Åsta Graben of the southern North Sea, close to the Danish border. The primary objective was to evaluate the fluids and reservoir properties in Paleocene Heimdal Formation sandstone. The well was planned to drill further deep into the Chalk Group in order to check possible presence of hydrocarbons in the Ekofisk formation.
Operations and results
Wildcat well 4/4-1 was spudded with the jack-up installation Mærsk Giant on 13 September 2013 and drilled to TD at 2012 m in the Late Cretaceous Tor Formation. The well was drilled with seawater and hi-vis sweeps down to 194 m and with Glydril Mud from 194 m to TD. Operations proceeded without significant difficulties and the rig was ready for demobilization and transit on 13 October 2013. However, due to bad weather the rig could not move until 10 December, spending 57 days due to the worst weather / storm conditions encountered in the North Sea in nearly 60 years.
Sands were encountered in the Sele Formation with top at 1806 m, in the Lista Formation with top at 1861 m, and in the Våle Formation with top at 1883 m. Total net sand in all three formations was 23.3 m. Logs, SWC and fluid sampling proved good reservoir quality (Porosity ~29% and mobility in the range 50-1000 mD/cP). No hydrocarbon indications were observed and the reservoir was evaluated as water wet.
No cores were cut. An MDT water sample was taken at 1838.7 m.
The well was permanently abandoned on 13 October 2013 as a dry well.
Testing
<spa
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.
Developers: this page as JSON is GET /v1/data/norway/wells/7270, documented in the API reference.