6407/8-4 S

Exploration · Wildcat · P&A · Gas · StatoilHydro Petroleum AS · PL 348

6407/8-4 S is a wildcat exploration wellbore in the Norwegian Sea, drilled by StatoilHydro Petroleum AS, entered Apr 20, 2008, to 2,788 m in the Åre Fm.

Discovery 6407/8-4 S (Galtvort) · On the map →

2,788: m total depth · 2,650.3 m vertical
266: m water depth
Apr 20, 2008: entered · completed May 21, 2008
Åre Fm: at total depth · Early Jurassic
53.5: m of core in 2 cores
104: °C bottom-hole temperature

SODIR FACTPAGES · RECORD UPDATED FEB 20, 2026 · RELEASED MAY 21, 2010

On file for this wellbore

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

Drilling

Drilling facility: WEST ALPHA · Semisub steel
Drilling days: 32
Kelly bushing elevation: 18 m
Maximum inclination: 39°
Drilling permit: 1182-L
Licensing round: TFO2004
Plugged and abandoned: —
Core samples available: Yes
Cuttings samples available: Yes
Position · ED50: 64.44661° N, 7.64839° E
Hydrocarbons in: Garn Fm · Middle Jurassic

Well history

WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE

General

The Galtvort well 6407/8-4 S is located on the eastern margin of the Gimsan Basin in the Norwegian Sea, ca 7 km northwest of the Draugen Field. The primary objective was to test the hydrocarbon potential of the Middle Jurassic Garn and Ile Formations of the Galtvort prospect. The secondary objective was to test the hydrocarbon potential of prospective formations in the Early Jurassic Båt Group.

Operations and results

Wildcat well 6407/8-4 S was spudded with the semi-submersible installation West Alpha on 20 April 2008 and drilled to TD at 2788 m (2650.3 m TVD) in the Early Jurassic Åre Formation. The well was drilled vertical down to 1240 m, and then deviated with up to 39 deg inclination at 1980 m, then falling off to 19.5 deg at TD. The well was drilled with water based spud mud down to 930 m, and with Glydril mud from 930 m to TD. No significant technical problems were encountered in the operations. No shallow gas was observed by the ROV at the wellhead or by the MWD while drilling the 26" hole.

The well penetrated rocks of Quaternary, Tertiary, Cretaceous, and Jurassic age. The Garn reservoir section was encountered at 2212 m (2118 m TVD), 77 m shallower than prognosed, and proved a GWC at 2280 m (2178 m TVD). The remaining reservoirs were found to be water bearing, but residual oil staining and high gas readings from cuttings during drilling, log responses and oil shows on core indicated residual hydrocarbons in the Ile Formation.

One 27.2 m core was cut from 2221.0 - 2248.2 m in the Garn Formation. The general lithology in this core was sandstone with traces of claystone. A second core was cut from 2379.0 - 2405.3 m (26.3 m long) in the Ile Formation. The gener

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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/5813, documented in the API reference.