25/8-19 A

Exploration · Appraisal · P&A · Oil/gas · MOL Norge AS · PL 820 S

25/8-19 A is an appraisal exploration wellbore in the North Sea, drilled by MOL Norge AS, entered Dec 31, 2019, to 2,950 m in the Basement.

Discovery 25/8-19 S (Iving) · On the map →

2,950: m total depth · 2,636 m vertical
126: m water depth
Dec 31, 2019: entered · completed Mar 19, 2020
Basement: at total depth
69: m of core in 4 cores
—: °C bottom-hole temperature

SODIR FACTPAGES · RECORD UPDATED JUL 11, 2026 · RELEASED MAR 19, 2022

On file for this wellbore

What the Directorate holds from this wellbore. Each opens the section that lists it.

Drilling

Drilling facility: DEEPSEA BERGEN decom · Semisub steel
Drilling days: 80
Kelly bushing elevation: 23 m
Maximum inclination: 0°
Drilling permit: 1805-L
Licensing round: TFO2015
Plugged and abandoned: Mar 19, 2020
Core samples available: Yes
Cuttings samples available: Yes
Position · ED50: 59.33700° N, 2.36480° E
Hydrocarbons in: Skagerrak Fm · Late Triassic
Hydrocarbons in: Heimdal Fm · Paleocene

Well history

WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE

General

Well 25/8-19 A was drilled as an appraisal well on the 25/8-19 S Evra discovery on the southern part of the Heimdal Terrace in the North Sea. Well 25/8-19 S found oil and gas in several intervals from Paleocene to Basement. The primary objective was to investigate the hydrocarbon bearing intervals encountered in well 25/8-19 S, find the oil-water contact and to perform a well test in the Skagerrak Formation.

Operations and results

Appraisal well 25/8-19 A was kicked off from 1017 m in well 25/8-19 S on 31 December 2019. It was drilled with the semi-submersible installation Deepsea Bergen to 2950 m (2636.9 m TVD) in Basement rock. Hole problems led to plug back and drilling of a side-track for the planned well test. The side-track 25/8-19 A T2 was kicked off at 1960 m on 2 February 2020 and drilled to final TD at 2975 m (2567.8 m TVD) in Basement rock. The well was drilled with RheGuard oil-based mud from kick-off to TD.

The well encountered thin gas and oil-bearing sandstone injectite layers totalling 8 metres from 1760 to 1810 m in the lowermost Hordaland Group and in the Balder Formation at 1818 m. Thin, oil-bearing sandstones were encountered also throughout the Heimdal Formation. The Upper and Middle-Lower Statfjord units came in with water-bearing sandstones of about 50 and 30 metres, respectively. A total of 18 metres of gas and oil-filled sandstone layers were encountered in the Skagerrak Formation between 2615 and 2806 m. No oil/water contact was proven in the Skagerrak Formation. The well confirmed oil-bearing basement. No oil/water contact was proven in basement.

In addition to the hydrocarbon-bearing intervals, oil shows with direct and cut fluorescence were observed

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/8981, documented in the API reference.