NORWAY · WELLBORES · NPDID 266
2/7-7
Exploration · Appraisal · P&A · Oil · Phillips Petroleum Company Norway · Eldfisk · PL 018
2/7-7 is an appraisal exploration wellbore in the North Sea, drilled by Phillips Petroleum Company Norway, entered Jan 2, 1973, to 3,084 m in the Rødby Fm.
Discovery 2/7-1 Eldfisk · On the map →
- 3,084
- m total depth
- 70
- m water depth
- Jan 2, 1973
- entered · completed Mar 29, 1973
- Rødby Fm
- at total depth · Early Cretaceous
- —
- m of core
- 104
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED MAR 29, 1975
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
- 87
- Kelly bushing elevation
- 27 m
- Maximum inclination
- 0.75°
- Drilling permit
- 82-L
- Licensing round
- 1-A
- Plugged and abandoned
- —
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 56.36722° N, 3.25556° E
- Hydrocarbons in
- Ekofisk Fm · Paleocene
- Hydrocarbons in
- Tor Fm · Late Cretaceous
- Hydrocarbons in
- Hod Fm · Late Cretaceous
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 2/7-7, was drilled to appraise the southern part of the Eldfisk structure in North Sea. The primary objective was to test the Danian Limestone, expected to be about 120 m thick.
Operations and results
Appraisal well 2/7-7 was spudded with the semi-submersible installation Ocean Viking on 2 January 1973 and drilled to TD at 3084 m in the Early Cretaceous Rødby Formation. The well was drilled with seawater and hi-vis sweeps down to 497 m and with gypsum/lignosulphonate mud from 497 m to TD. 4-6% diesel additive was used below 497 m.
The Danian Limestone was found to be highly fractured, only3 0 m thick, and yielded commercial quantities of oil and gas on one drill stem test. The Late Cretaceous, which was 195 m thick, was also found to contain hydrocarbons, and yielded commercial amounts of oil and gas on two out of three drill stem tests. The Danian Limestone and the upper part of the Late Cretaceous were thinner than expected due to a fault throwing Campanian on Turonian rocks.
No cores were cut and no fluid samples were taken.
The well was permanently abandoned on 29 March 1973 as an oil appraisal.
Testing
Four intervals in the chalk section were perforated and tested
DST's 1 and 2 tested the interval 2911 to 2925. The interval gave a weak flow with headed oil + gas. The oil gravity was measured to 36.2 °API.
DST 3 tested the interval 2838 to 2905 m. The interval produced after acidiz
Around this wellbore
This wellbore on Sodir FactPages →
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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