24/9-12 S

Exploration · Wildcat · P&A · Oil · Aker BP ASA · Bøyla · PL 340

24/9-12 S is a wildcat exploration wellbore in the North Sea, drilled by Aker BP ASA, entered Dec 29, 2017, to 2,336 m in the Heimdal Fm.

Discovery 24/9-12 S (Frosk) · On the map →

2,336: m total depth · 2,326 m vertical
120: m water depth
Dec 29, 2017: entered · completed Feb 8, 2018
Heimdal Fm: at total depth · Eocene
75.4: m of core in 3 cores
70: °C bottom-hole temperature

SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED FEB 8, 2020

On file for this wellbore

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

Drilling

Drilling facility: TRANSOCEAN ARCTIC · Semisub steel
Drilling days: 42
Kelly bushing elevation: 24 m
Maximum inclination: 19.60000038°
Drilling permit: 1681-L
Licensing round: TFO2004
Plugged and abandoned: Feb 8, 2018
Core samples available: Yes
Cuttings samples available: Yes
Position · ED50: 59.34971° N, 1.83013° E
Hydrocarbons in: Hordaland Gp · Eocene

Well history

WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE

General

Well 24/9-12 S was drilled to test two prospects in the Vana Sub-basin in the North Sea. The primary objective was to test the hydrocarbon potential in Early Eocene injectite sands, the Frosk prospect. The secondary objective was to test the hydrocarbon potential in sandstones in the Paleocene Hermod Formation, the Marihøne B prospect.

Operations and results

Wildcat well 24/9-12 S was spudded with the semi-submersible installation Transocean Arctic on 29 December 2017. The well consist of two wellbores. The first wellbore was drilled to 2285 m (2275 m TVD) and proved oil in the primary target m. A technical side-track, 24/9-12 S T2, was then kicked off at 1777 m for coring and wire line logging. This wellbore was drilled to final TD at 2336 m (2326 m TVD) m in the Paleocene Heimdal Formation. Operations proceeded without significant problems. The well was drilled with Glydrill water-based mud down to 1360 m, m and with EMS 4600 oil-based mud from 1360 m to TD in both wellbores.

Top of the Frosk injectite complex was encountered at 1861.1 m (1851.4 m TVD), with top of main sands at 1884.9 m (1875 m TVD). The sand was oil filled with a biodegraded oil down to the oil-water contact at 1896 m (1885.7 m TVD). The same contact was seen in both wellbores. Top Hermod Formation sandstone was encountered at 2094 m (20184 m TVD) in both well bores. The Hermod Formation was water-wet with no shows. In the oil-bearing injectite sands there were oil shows on the cores, otherwise there were no oil shows above OBM in the wellbores.

Three cores were cut with 100% recovery in the interval 1856 to 1931.5 m in the technical side-track. The cores captured the entire injectite sand complex. MDT flu

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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