NORWAY · WELLBORES · NPDID 332

16/1-2

Exploration · Appraisal · P&A · Oil · Esso Exploration and Production Norway A/S · Ivar Aasen · PL 001

5 documents: reports, logs, and plots →

16/1-2 is an appraisal exploration wellbore in the North Sea, drilled by Esso Exploration and Production Norway A/S, entered Jul 4, 1976, to 2,919 m in the Basement.

Discovery 16/1-9 Ivar Aasen · On the map →

2,919
m total depth
113
m water depth
Jul 4, 1976
entered · completed Aug 7, 1976
Basement
at total depth · Pre-Devonian
—
m of core
101
°C bottom-hole temperature

SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED AUG 7, 1978

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
35
Kelly bushing elevation
25 m
Maximum inclination
0°
Drilling permit
160-L
Licensing round
1-A
Plugged and abandoned
—
Core samples available
Yes
Cuttings samples available
Yes
Position · ED50
58.93589° N, 2.22224° E
Hydrocarbons in
Skagerrak Fm · Late Triassic

Well history

WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE

General

Well 16/1-2 is located on the eastern side of the Gudrun Terrace, towards the Utsira High in the North Sea. The well was designed to test all potential reservoirs through the Permian on a closure on a large, rotated fault-block. Primary objectives were Jurassic sandstones and secondary objectives were Paleocene sandstones.

Operations and results

Wildcat well 16/1-2 was spudded with the semi-submersible installation Ross Rig on 4 July 1976 and drilled to TD at 2919 m in granite basement. Loss of circulation in high-porosity Zechstein carbonates was the only significant problem encountered during the drilling of 16/1-2. Initial drilling from the sea floor to 1286 meters was with sea water and gel. Below this depth a fresh water and lignosulphonate mud system was used.

The well penetrated several sands in the Tertiary including the Utsira, Skade, and Grid formations. The Heimdal Formation was encountered at 2098 m with a 10 m zone of strong oil shows. The zone was however judged by log analysis to be water-productive and the shows not of sufficient quality to warrant testing. Triassic sandstones were originally interpreted to be water-filled. Later reinterpretation have confirmed the presence of oil in the Triassic interval. There were no shows from either the Zechstein or the Rotliegendes sandstone.

No cores were cut and no wire line fluid samples were taken.

The well was permanently abandoned on 7 August 1976 as a dry well with shows.

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.

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