16/5-4

Exploration · Appraisal · P&A · Oil · Lundin Norway AS · Johan Sverdrup · PL 501

16/5-4 is an appraisal exploration wellbore in the North Sea, drilled by Lundin Norway AS, entered Aug 23, 2013, to 2,100 m in the Skagerrak Fm.

Discovery 16/2-6 Johan Sverdrup · On the map →

2,100: m total depth · 2,100 m vertical
108: m water depth
Aug 23, 2013: entered · completed Sep 28, 2013
Skagerrak Fm: at total depth · Triassic
43.7: m of core in 2 cores
—: °C bottom-hole temperature

SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED SEP 28, 2015

On file for this wellbore

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

Drilling

Drilling facility: BREDFORD DOLPHIN · Semisub steel
Drilling days: 35
Kelly bushing elevation: 25 m
Maximum inclination: 0.80000001°
Drilling permit: 1468-L
Licensing round: TFO2008
Plugged and abandoned: —
Core samples available: Yes
Cuttings samples available: Yes
Position · ED50: 58.71305° N, 2.59881° E
Hydrocarbons in: Intra Draupne Fm Ss · Late Jurassic

Well history

WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE

General

Well 16/5-4 was drilled on the south-western flank of the Johan Sverdrup Field on the Utsira High in the North Sea. The well was placed about 4.3 kilometres southwest of appraisal well 16/5-2 S and about 3.1 kilometres southeast of well 16/5-3. The objective of the well was to delineate the Johan Sverdrup discovery by examining the thickness, properties and depth of the reservoir, as well as determine the height of the oil column and clarify the oil-water contact in the south-western part.

Operations and results

Appraisal well 16/5-4 was spudded with the semi-submersible installation Bredford Dolphin on 23 August 2013 and drilled to TD at 2100 m in the Triassic Skagerrak Formation. No shallow gas was seen in the top holed including the 9 7/8" pilot hole. No significant problem was encountered in the operations. The well was drilled with seawater and hi-vis sweeps down to 701 m and with Performadril water based mud with glycols from 701 m to TD.

The well went directly from Cretaceous marls into Jurassic reservoir sandstones and no Draupne Formation shale was present in this location, as expected. The well encountered a 6 meters thick Intra-Draupne Formation sandstone section with top at 1930.4 m. This is thinner than predicted. The section consists of unconsolidated sandstones with excellent properties. The pressure measurements confirmed the reservoir to be in the same pressure regime as the Johan Sverdrup discovery. The well showed an oil-down-to situation and consequently no free water level was encountered. The Jurassic section is resting on Triassic sediments consisting of very fine to fine grained sandstones with minor stringers of claystones and siltstones. The only oil shows in the well were seen in the Intra Dr

Around this wellbore

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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/7258, documented in the API reference.