NORWAY · WELLBORES · NPDID 9242
34/4-16 S
Exploration · Appraisal · Plugged · Oil · Neptune Energy Norge AS · PL 882
34/4-16 S is an appraisal exploration wellbore in the North Sea, drilled by Neptune Energy Norge AS, entered Feb 27, 2021, to 3,603 m in the Drake Fm.
Discovery 34/4-15 S (Dugong) · On the map →
- 3,603
- m total depth · 3,583 m vertical
- 331
- m water depth
- Feb 27, 2021
- entered · completed Mar 31, 2021
- Drake Fm
- at total depth · Early Jurassic
- 104.3
- m of core in 2 cores
- 123
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED FEB 20, 2026 · RELEASED MAR 31, 2023
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- DEEPSEA YANTAI · Semisub steel
- Drilling days
- 33
- Kelly bushing elevation
- 27.3 m
- Maximum inclination
- 13.80000019°
- Drilling permit
- 1846-L
- Licensing round
- TFO2016
- Plugged and abandoned
- Sep 23, 2021
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 61.56183° N, 2.03627° E
- Hydrocarbons in
- Brent Gp · Middle Jurassic
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 34/4-16 S was drilled to appraise the 34/4-15 S Dugong discovery in the boarder between the Marulk Basin and Tampen Spur in the North Sea. The primary objective was to prove commercial hydrocarbons in the Middle Jurassic Rannoch Formation, locate the Oil-Water Contact and perform a Drill Stem Test if sufficient oil column.
Operations and results
Appraisal well 34/4-16 S was spudded with the semi-submersible installation Deepsea Yantai on 27 February 2021 and drilled to TD at 3603 m (3583 m TVD) m in the Early-Middle Jurassic Drake Formation. The well was drilled S-shaped with vertical sections above ca 1825 m and below ca 3010 m. Operations proceeded without significant problems. The well was drilled with Glydril mud, seawater and hi-vis sweeps down to 1207 m, with Versatec oil-based mud from 1207 m to 3334 m, and with Rheguard oil-based mud from 3334 m TD.
Brent Group sandstones were penetrated at 3457 m (3437 m TVD): The Brent Group includes an 11 m thick Tarbert Fm sandstone on top and Rannoch Formation sandstones below down to top Drake Formation at 3553 m (3532.6 m TVD) Both Tarbert and Rannoch were found oil-bearing. The upper Tarbert oil column gradient lie on a ca 1 bar higher pressured gradient than the Rannoch oil column. Moveable hydrocarbons was seen down to 3489 m (3469 m TVD)
The only shows above OBM was in the oil-bearing Brent Group.
Two cores were cut in succession over the Heather-Tarbert-Rannoch sequence from 3449 to 3503.8 m. Fluid samples were taken at 3476.2 m (oil) and 3497.4 m (water).
The well was suspended on 31 March 2021 and then re-entered
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/9242, documented in the API reference.