30/4-3 S

Exploration · Wildcat · Re-class to dev · Gas/condensate · Total E&P Norge AS · Martin Linge · PL 043

30/4-3 S is a wildcat exploration wellbore in the North Sea, drilled by Total E&P Norge AS, entered Jun 16, 2016, to 4,605 m in the Dunlin Gp.

Discovery 30/4-3 S · On the map →

4,605: m total depth · 4,201 m vertical
115: m water depth
Jun 16, 2016: entered · completed Oct 9, 2016
Dunlin Gp: at total depth · Early Jurassic
—: m of core
—: °C bottom-hole temperature

SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED OCT 9, 2018

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: 116
Kelly bushing elevation: 57.7 m
Maximum inclination: 36.90000153°
Drilling permit: 1623-L
Licensing round: 3
Plugged and abandoned: —
Core samples available: No
Cuttings samples available: No
Position · ED50: 60.50623° N, 2.01483° E
Hydrocarbons in: Tarbert Fm · Middle Jurassic
Hydrocarbons in: Ness Fm · Middle Jurassic
Hydrocarbons in: Frigg Fm · Eocene

Well history

WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE

General

Well 30/4-3 S was drilled to test the Herja prospect North-East of the Martin Linge development area located between Martin Linge Central (30/7-8 R) and Martin Linge East (30/4-2) discoveries in the North Sea. The primary objective was to prove hydrocarbon accumulations within the Middle Jurassic Brent sandstones.

Operations and results

Wildcat well 30/4-3 S was spudded with the jack-up installation Mærsk Intrepid on 16 June 2016 and drilled to TD at 4605 m (4201 m TVD) m in the Early Jurassic Dunlin Group. Operations proceeded without significant problems. The well was drilled with seawater and bentonite sweeps down to 258 m, with Sildril water-based mud from 258 m to 1219 m, with Glydril water-based mud from 1219 m to 2225 m, with NABM EMS 4600 oil-based mud from 2225 m to 4144 m, and with WARP NABM mud from 4144 m to TD.

The well confirmed oil in the Eocene Frigg Formation, from top of the Frigg sandstone at 1829 m (1810 m TVD) down to the free water level at 1835 m (1815 m TVD). Top of the primary exploration target Brent Group was penetrated at 4250 m. Good quality reservoirs were encountered within the Tarbert, Ness and Etive Formations. Tarbert and Ness were found to be gas bearing, while the Etive Formation was water bearing. XPT pressure points showed a gas down to situation at 4377m (4004 m TVD) at base Tarbert. Both Tarbert and Ness show gas gradients, but Ness is 10 bar overpressured compared to Tarbert. Hydrocarbon shows in this well were not described, due to masking by the mud (NABM) and the loose sand in Frigg Formation.

No conventional cores were cut. MDT fluid samples were taken at 4253 m (gas), 4337.4 m (gas), 4459.9 m (gas), 4495 m (gas), and 4552.

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/7961, documented in the API reference.