NORWAY · WELLBORES · NPDID 244
1/9-2
Exploration · Appraisal · P&A · Oil shows · Den norske stats oljeselskap a.s · Tommeliten A · PL 044
1/9-2 is an appraisal exploration wellbore in the North Sea, drilled by Den norske stats oljeselskap a.s, entered Jun 1, 1977, to 3,459 m in the Hod Fm.
Discovery 1/9-1 Tommeliten Alpha · On the map →
- 3,459
- m total depth
- 75
- m water depth
- Jun 1, 1977
- entered · completed Aug 12, 1977
- Hod Fm
- at total depth · Late Cretaceous
- 88
- m of core in 5 cores
- 121
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED AUG 12, 1979
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- ROSS RIG (1) · Semisub steel
- Drilling days
- 73
- Kelly bushing elevation
- 25 m
- Maximum inclination
- 2.25°
- Drilling permit
- 175-L
- Licensing round
- 3
- Plugged and abandoned
- —
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 56.39799° N, 2.92629° E
- Hydrocarbons in
- Ekofisk Fm · Paleocene
- Hydrocarbons in
- Tor Fm · Late Cretaceous
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 1/9-2 was drilled on a salt diapir structure located in the Feda Graben in the southern North Sea. It was drilled to confirm and further evaluate the proven hydrocarbons found on this seismic structure by the 1/9-1 well.
Operations and results
Appraisal well 1/9-2 was spudded with the semi-submersible installation Ross Rig on 1 June 1977 and drilled to TD at 3459 m in the Late Cretaceous Hod Formation. No significant problems were encountered in the operations. The well was drilled with spud mud down to 439 m and water based with lime/Drispac/lignosulphonate mud systems from 438 m to TD.
Good oil show was observed in a thin sandstone stringer at 1632 m in the Hordaland Group. Oil in cuttings was recorded also at 1710 m and 2858 m in claystones. The Ekofisk Formation was encountered at 3120 m with shows and tested small amounts of oil. The Tor Formation came in at 3195 m with shows and tested small amounts of oil. Below 3213.5 m only rare and weak fluorescence was observed on limestone.
The interval 3135-3215 in the Ekofisk and Tor formations was cored with nearly 100% recovery. RFT pressure readings were attempted in the Tor and Ekofisk formations, but all were unsuccessful due to tight formation. No fluid samples were taken.
The well was permanently abandoned on 12 August 1977. The poor results from DST are classified as shows.
Testing
Two drill stem tests were carried out.
DST 1 tested the Maastrichtian Tor Formation (3197 - 32
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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