NORWAY · WELLBORES · NPDID 179

2/7-1

Exploration · Wildcat · P&A · Oil · Phillips Petroleum Company Norway · Eldfisk · PL 018

9 documents: reports, logs, and plots →

2/7-1 is a wildcat exploration wellbore in the North Sea, drilled by Phillips Petroleum Company Norway, entered Aug 3, 1970, to 4,572 m in the Vestland Gp.

Discovery 2/7-1 Eldfisk · On the map →

4,572
m total depth
71
m water depth
Aug 3, 1970
entered · completed Dec 11, 1970
Vestland Gp
at total depth · Late Jurassic
39.2
ft of core in 4 cores
160
°C bottom-hole temperature

SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED DEC 11, 1972

On file for this wellbore

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

Drilling

Drilling facility
OCEAN VIKING · Semisub steel
Drilling days
131
Kelly bushing elevation
27 m
Maximum inclination
8.60000038°
Drilling permit
42-L
Licensing round
1-A
Plugged and abandoned
—
Core samples available
Yes
Cuttings samples available
Yes
Position · ED50
56.42908° N, 3.20395° E
Hydrocarbons in
Ekofisk Fm · Paleocene

Well history

WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE

an lang=EN-GB>General

Well 2/7-1 was drilled on the Eldfisk structure on the Lindesnes Ridge in the North Sea. The primary objective was to test the Late Cretaceous to Paleocene chalk sequence that had proved oil in the Ekofisk structure north of Eldfisk. A secondary objective was to test older Mesozoic sediments

Operations and results

Wildcat well 2/7-1 was spudded with the semi-submersible installation Ocean Viking on 3 August 1970 and drilled to TD at 4573 m in the Vestland Group. The well was drilled with seawater and hi-vis sweeps down to 588 m, with seawater/Drill Aid mud from 588 m to 3102 m, and with seawater/lignosulphonate mud from3102 m to TD.

Top of the Danian chalk sequence, Ekofisk Formation, is at 2934 m, while top of the Cretaceous chalk, Tor Formation, is at 3014 m. In this first well on the structure, only small amounts of live hydrocarbons were found in the Ekofisk carbonates.

Three cores were cut from 2956.6 to 2987.3 m in the Ekofisk Formation. A fourth core was cut from 3032.8 to 3041.9 m. No fluid sample was taken.

The well was permanently abandoned on 11 December 1970 as an oil discovery

Testing

A drill stem test was performed in the interval 2942 to 2954 m plus 2957 to 2975 m in the Danian chalk (Ekofisk Formation). The flow rate after acidizing was too small to measure. The recovered fluid was composed of 65% oil and 35% water. The oil density was 32.2 °API.

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.

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