34/7-E-4 AH

Exploration · Wildcat · Plugged · Oil · Equinor Energy AS · Vigdis · PL 089

34/7-E-4 AH is a wildcat exploration wellbore in the North Sea, drilled by Equinor Energy AS, entered Jun 8, 2020, to 4,455 m in the Rannoch Fm.

Discovery 34/7-E-4 AH (Lomre) · On the map →

4,455: m total depth · 2,546 m vertical
283: m water depth
Jun 8, 2020: entered · completed Jul 13, 2020
Rannoch Fm: at total depth · Middle Jurassic
—: m of core
—: °C bottom-hole temperature

SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED JUL 13, 2022

On file for this wellbore

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

Drilling

Drilling facility: TRANSOCEAN NORGE · Semisub steel
Drilling days: 36
Kelly bushing elevation: 32.9 m
Maximum inclination: 0°
Drilling permit: 1811-L
Licensing round: 8
Plugged and abandoned: Jul 13, 2020
Core samples available: No
Cuttings samples available: No
Position · ED50: 61.39861° N, 2.06787° E
Hydrocarbons in: Rannoch Fm · Middle Jurassic

Well history

WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE

General

Well 34/7-E-4 AH was drilled to test the Lomre prospect on Tampen Spur, north of the Vigdis Field and south-west of the Snorre Field. The primary objective was to prove the presence of oil in the Rannoch Formation (Brent Group).

Operations and results

Wildcat well 34/7-E-4 AH was drilled as a geological side-track from existing development well 34/7-E-4 H on the Vigdis field. The 34/7-E-4 AH side-track was kicked off at 1172 m with the semi-submersible installation Transocean Norge on 8 June 2020. This hole was drilled to 4436 m (2495.2 m TVD) where total losses occurred, which required cementing back the hole and kicking off a technical side-track 34/7-E-4 AH T2 from 3783 m. This hole was drilled to final TD at 4448 m (2541.2 m TVD) in the Middle Jurassic Rannoch Formation. The well was drilled with Versatech oil-based mud from kick-off to TD.

Indications from gas logging and resistivity measurements suggest water filled sands in Lista Formation at the well location. The well penetrated top reservoir in the Rannoch Formation, at 4366 m (2490.1 m TVD). The well continued through the Rannoch Formation and TD was set in the shale-dominated lower Rannoch Formation. The Rannoch Formation contained both an oil and a water leg. Pressure points suggest a reservoir pressure depleted relative to initial pressures seen in the Vigdis field. No oil shows are described in the well.

No cores were cut. No fluid sample was taken.

The well was permanently abandoned on 12 July 2020 as an oil discovery.

Testing

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Around this wellbore

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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/9010, documented in the API reference.