NORWAY · WELLBORES · NPDID 9220
7220/7-4
Exploration · Wildcat · P&A · Oil · Equinor Energy AS · Johan Castberg · PL 532
7220/7-4 is a wildcat exploration wellbore in the Barents Sea, drilled by Equinor Energy AS, entered Feb 7, 2021, to 2,112 m in the Tubåen Fm.
Discovery 7220/7-4 Isflak · On the map →
- 2,112
- m total depth · 2,111 m vertical
- 351
- m water depth
- Feb 7, 2021
- entered · completed Mar 14, 2021
- Tubåen Fm
- at total depth · Early Jurassic
- 155.9
- m of core in 3 cores
- 73
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED MAR 14, 2023
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- TRANSOCEAN ENABLER · Semisub steel
- Drilling days
- 36
- Kelly bushing elevation
- 32 m
- Maximum inclination
- 3.0999999°
- Drilling permit
- 1844-L
- Licensing round
- 20
- Plugged and abandoned
- Mar 14, 2021
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 72.41786° N, 20.14049° E
- Hydrocarbons in
- Stø Fm · Middle Jurassic
- Hydrocarbons in
- Nordmela Fm · Early Jurassic
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 7220/7-4 was drilled to test the Isflak prospect in the Bjørnøyrenna Fault Complex approximately 8 kilometres from the Johan Castberg FPSO location in the Barents Sea. The primary objective was to test the Stø and Nordmela formations of Middle to Early Jurassic age.
Operations and results
A 9 7/8” pilot hole was drilled on the well location, from 436 to 950 m to investigate the presence of possible shallow
gas, to reduce the uncertainties, and to gather data to continue drilling the well. No shallow gas or shallow water flow was observed at the well location.
Wildcat well 7220/7-4 was spudded with the semi-submersible installation Transocean Enabler on 7 February 2021 and drilled to TD at 2112 m in the Late Triassic, Tubåen Formation. Operations proceeded without significant problems. The well was drilled with seawater and hi-vis pills down to 1272 m, with KCl/Polymer/GEM from 1272 to 1710, and with BaraHib ECO water-based mud from 1710 m to TD.
Top of the target Stø-Nordmela reservoir was encountered at 1820.3 m. The reservoir was oil-bearing in good quality sandstone with a clear oil-water contact at 1930 m in the Nordmela Formation. Oil shows with stain, visible fluorescence and visible cut with fluorescence was described down to 1985 m. The Tubåen Formation had good reservoir quality sandstone, but was water bearing, as expected.
Three cores were cut in succession in the Stø and Nordmela formations, from 1830 to 1985.9 m. The recovery was 100 %. MDT fluid samples were taken in the Stø and Nordmela formations at 1821 m (oil), 1830.7 m (oil), 1863.4 m (oil), 1923.9 m a
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/9220, documented in the API reference.