NORWAY · WELLBORES · NPDID 387
30/7-4
Exploration · Wildcat · Junked · Not applicable · Norsk Hydro Produksjon AS · PL 040
30/7-4 is a wildcat exploration wellbore in the North Sea, drilled by Norsk Hydro Produksjon AS, entered Jan 25, 1977, to 778 m in the Nordland Gp.
- 778
- m total depth
- 117
- m water depth
- Jan 25, 1977
- entered · completed Feb 5, 1977
- Nordland Gp
- at total depth · Miocene
- —
- m of core
- —
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED FEB 20, 2026 · RELEASED FEB 5, 1979
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- POLYGLOMAR DRILLER · Semisub steel
- Drilling days
- 12
- Kelly bushing elevation
- 25 m
- Maximum inclination
- 0°
- Drilling permit
- 170-L
- Licensing round
- 3
- Plugged and abandoned
- —
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 60.49159° N, 2.05676° E
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 30/7-4 is located in the eastern part of the East Shetland Basin in the North Sea. The well location is due west of the Oseberg Field and ca 2.5 km from the UK Border. The main objective of the well was to test Middle and Early Jurassic sandstones (Brent Group and Statfjord Formation) Secondary objectives were possible lower Cretaceous carbonate development, and possible Late Jurassic sandstones.
Operations and results
Well 30/7-4 was spudded with the semi-submersible installation Polyglomar Drilling on 25 January 1977. A 17 1/2" pilot hole was drilled to 192 m. The operation had to be suspended for two days due to bad weather. When the operation was continued, the 17 1/2" pilot hole could not be found and a new 36" hole was drilled. The 30" casing was set and cemented at 193 m. The weather conditions made it necessary to set piggy backs on five anchors. A 17 1/2" hole was drilled to 778 m in assumed Miocene sediments. This was the planned setting depth for the 20" casing. While reaming out the 17 1/2" hole to 26" prior to running 20" casing, the drill string parted. An overshot was worked over the fish but attempts to pull the fish were unsuccessful. The string was backed off at 538 m in the x-over above the overshot and the hole was given up. The well was drilled with seawater and gel.
No cores were cut, no logs were run, and no wire line fluid samples were taken.
The well was permanently abandoned on 5 February as a junk well and the rig was prepared for spudding replacement well 30/7-5.
Testing
No drill stem test
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/387, documented in the API reference.