NORWAY · WELLBORES · NPDID 8490
25/10-16 S
Exploration · Appraisal · P&A · Oil/gas · Aker BP ASA · Hanz · PL 028 B
25/10-16 S is an appraisal exploration wellbore in the North Sea, drilled by Aker BP ASA, entered Jun 30, 2018, to 2,765 m in the Hegre Gp.
Discovery 25/10-8 Hanz · On the map →
- 2,765
- m total depth · 2,698 m vertical
- 116.5
- m water depth
- Jun 30, 2018
- entered · completed Jul 30, 2018
- Hegre Gp
- at total depth · Late Triassic
- 90.5
- m of core in 2 cores
- 106
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED FEB 20, 2026 · RELEASED JUL 30, 2020
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- MAERSK INTREPID · Jack-up 3 legs
- Drilling days
- 31
- Kelly bushing elevation
- 55 m
- Maximum inclination
- 17.29999924°
- Drilling permit
- 1706-L
- Licensing round
- 2-A
- Plugged and abandoned
- Jul 30, 2018
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 59.03698° N, 2.22816° E
- Hydrocarbons in
- Intra Draupne Fm Ss · Middle Jurassic
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 25/10-16 S was drilled on the 25/10-8 Hanz discovery on the Gudrun Terrace in the North Sea. The primary objective was to test the hydrocarbon potential in Intra-Draupne Formation sandstones in the northern part of the Hanz structure.
Operations and results
Appraisal well 25/10-16 S was spudded with the jack-up installation Mærsk Intrepid on 30 June 2018 and drilled to TD at 2765 m (2698 m TVD) m in the Late Triassic Hegre Group. Operations proceeded without significant problems. The well was drilled with seawater and hi-vis pills down to 560 m and with EMS-4600 oil-based mud from 560 m to TD.
The Draupne Formation was encountered at 2456.1 m (2388.8 m TVD). It contained abundant sandstones varying in thickness from 0.5 to 8 m. From Petrophysical analysis there was 20 m net oil-bearing Intra-Draupne sandstones with excellent reservoir quality. A gas-oil contact was proven at 2483.2 m (2416 m TVD). There is oil at least down-to 2512.2 m (2445 m TVD). No oil-water contact was proven. The formation pressure was measured by wireline XPT. The measured formation pressures showed a depletion of ~1-2 bar in the Intra Draupne sandstones compared to the 25/10-8 discovery well. The Hugin Formation was comprised of sandstone, also with good reservoir properties, but was found to be water-bearing in the well position.
On the cores there were strong oil shows in the oil-leg of the Intra-Draupne sandstones, but there were no oil shows above the oil-based mud on cuttings anywhere else in the well.
Two cores were cut from 2460.5 to 2550.7 m with 100.4% total recovery. MDT fluid samples were taken at 2468 m (gas), 2478.9 m (gas), 2485.5 m (
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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