30/6-12
Exploration · Appraisal · Junked · Not applicable · Norsk Hydro Produksjon AS · Oseberg · PL 053
30/6-12 is an appraisal exploration wellbore in the North Sea, drilled by Norsk Hydro Produksjon AS, entered Feb 20, 1983, to 615 m in the Nordland Gp.
Discovery 30/6-1 Oseberg · On the map →
- 615
- m total depth · 615 m vertical
- 104
- m water depth
- Feb 20, 1983
- entered · completed Mar 9, 1983
- Nordland Gp
- at total depth · Pliocene
- —
- m of core
- —
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED MAR 9, 1985
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- TREASURE SEEKER · Semisub steel
- Drilling days
- 18
- Kelly bushing elevation
- 25 m
- Maximum inclination
- 0.5°
- Drilling permit
- 363-L
- Licensing round
- 4
- Plugged and abandoned
- —
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 60.55433° N, 2.82314° E
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
The appraisal well 30/6-12 was drilled in a down flank position on the Alpha block east of the 30/6-1 Oseberg Discovery well, which tested gas in the Middle Jurassic Brent Group. The main objectives of the well were to confirm the reserves of hydrocarbons, to prove oil in the Etive Formation, to define and refine the geological model for the Alpha structure, to obtain core from the Brent Group, and to do a water injection test in the oil zone. The well was planned to be drilled 50 m into the Drake Formation to a total depth of 2764+/- 50 m.
Operations and results
Well 30/6-12 was spudded with the semi-submersible installation Treasure Seeker on 20 February 1983. Drilling operations went without significant problems down to 615 m. The 20" casing was set with shoe at 600 m. During the subsequent landing of the BOP on the well head, the ball joint parted, and the BOP fell down on the wellhead. The wellhead was so badly damaged that the well had to be abandoned: Final TD of the well thus became 615 m in Pliocene sediments; prospective depth was not reached.
Top Pliocene was encountered at 350 m.
No cores were cut and no wire line fluid samples were taken.
The well was permanently abandoned on 9 March 1983 as a junk well. Replacement well 30/6-13 was spudded two days later on a location ca 40 m to the south-west of 30/6-12
Testing
No drill stem test was performed.
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.
Developers: this page as JSON is GET /v1/data/norway/wells/4, documented in the API reference.