NORWAY · WELLBORES · NPDID 6042

16/2-5

Exploration · Wildcat · P&A · Oil/gas · StatoilHydro Petroleum AS · PL 265

3 documents: reports, logs, and plots →

16/2-5 is a wildcat exploration wellbore in the North Sea, drilled by StatoilHydro Petroleum AS, entered Feb 22, 2009, to 2,373 m in the Basement.

Discovery 16/2-5 (P-Graben) · On the map →

2,373
m total depth · 2,373 m vertical
109
m water depth
Feb 22, 2009
entered · completed May 13, 2009
Basement
at total depth · Pre-Devonian
97.2
m of core in 3 cores
90
°C bottom-hole temperature

SODIR FACTPAGES · RECORD UPDATED FEB 20, 2026 · RELEASED MAY 13, 2011

On file for this wellbore

What the Directorate holds from this wellbore. Each opens the section that lists it.

Drilling

Drilling facility
WEST EPSILON · Jack-up 3 legs
Drilling days
81
Kelly bushing elevation
49.2 m
Maximum inclination
2.79999995°
Drilling permit
1227-L
Licensing round
NST2000
Plugged and abandoned
—
Core samples available
Yes
Cuttings samples available
Yes
Position · ED50
58.81409° N, 2.36974° E
Hydrocarbons in
Undefined Gp · Jurassic

Well history

WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE

General

Well 16/2-5 was drilled on the Ragnarock III prospect on the Utsira High in the North Sea. The primary objective of the well was to prove the presence of hydrocarbons in the pre-BCU interval and establish the composition and age of the sediments. The secondary target was the chalk in the Ekofisk and Tor Formations of Late Cretaceous age. The presence of hydrocarbons in these formations at the well location was possible, but not expected.

Operations and results

Wildcat well 16/2-5 was spudded with the jack-up installation West Epsilon on 22 February 2009 and drilled to TD at 2373 m in pre-Devonian Basement. After drilling the 36" hole to 288 m a 9 7/8" pilot hole was drilled to 513 m to check for shallow gas. No shallow gas or shallow water flow was observed. The well was drilled with spud mud down to 519 m, with KCl/polymer/glycol mud from 519 m to 1747 m, and with KCl/polymer/glycol low-sulphate mud from 1747 m to TD.

The well penetrated rocks of Quaternary, Tertiary and Cretaceous age, it then penetrated Graben Fill before TD in Basement. Base Cretaceous/top Graben Fill was encountered at 1884 m. A total thickness of 458 m of Graben Fill consisting of coarse, clastic sediments was penetrated and 3 cores were cut from 1894 to 1994 m. Due to lack of fossils no reliable dating was obtained for the Graben Fill. The Graben Fill was gas/condensate filled from top of the reservoir and down to 1902 m. High quality gas condensate samples were acquired by use of wire line sampling tools. A water sample was acquired at 1935 m and oil was scanned at 1916 m MD. An interval with oil was confirmed also by sampling at 1921.5 m, but due to poor pressure measurements in this interval the OWC was only tentatively set at 1917 m base

Around this wellbore

This wellbore on Sodir FactPages → · Press release →

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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