16/1-6 S

Exploration · Wildcat · P&A · Oil/gas · Statoil ASA (old) · PL 167

16/1-6 S is a wildcat exploration wellbore in the North Sea, drilled by Statoil ASA (old), entered May 22, 2003, to 1,997 m in the Ekofisk Fm.

Discovery 16/1-6 S (Verdandi) · On the map →

1,997: m total depth · 1,909 m vertical
112: m water depth
May 22, 2003: entered · completed Jun 7, 2003
Ekofisk Fm: at total depth · Paleocene
26.9: m of core in 1 core
87: °C bottom-hole temperature

SODIR FACTPAGES · RECORD UPDATED MAR 1, 2026 · RELEASED JUN 7, 2005

On file for this wellbore

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

Drilling

Drilling facility: BORGLAND DOLPHIN · Semisub steel
Drilling days: 17
Kelly bushing elevation: 31 m
Maximum inclination: 33.59999847°
Drilling permit: 1052-L
Licensing round: 13
Plugged and abandoned: —
Core samples available: Yes
Cuttings samples available: Yes
Position · ED50: 58.99110° N, 2.29530° E
Hydrocarbons in: Grid Fm · Eocene
Hydrocarbons in: Heimdal Fm · Paleocene

Well history

WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE

General

Wildcat well16/1-6 S is located on the Utsira High in the North Sea. The objective was to test the hydrocarbon potential of the Verdandi prospect on Paleocene level in a favourable position with respect to an observed DHI, interpreted tentatively as a gas-oil contact in a reservoir sand.

Operations and results

Wildcat well 16/1-6 S was spudded with the semi-submersible installation Borgland Dolphin on 22 May 2003 and drilled to TD at 1997 m in the Late Cretaceous Ekofisk Formation. Sidewall coring and VSP logging could not be performed below 1762 m due to hole problems. Apart from this no significant problems were encountered in the operations. The well was drilled with seawater and viscous bentonite/polymer pills down to 551 m, with KCl/polymer/glycol (Glydril) mud from 551 m to 1200 m, and with oil based mud (Novatec pseudo oil based) from 1200 m to TD.

MWD logs and drill gas indicated shallow gas in a sandstone stringer at 603 m. This gas correlate well with nearby wells, particularly well 16/1-4.

Grid sandstones were encountered between 1489.5 m (1451 m TVD MSL) to 1685 m (1617.5 m TVD MSL). Top Heimdal Formation came in at 1861.5 m (1765 m TVD MSL). It proved to be slightly deeper and significantly thinner than expected. Hydrocarbons were proven in the Grid sands as well as in the Heimdal sand. A distinct gas peak of 2.55 %, C1 to C4, was recorded from 1498 m in the upper Grid Formation. Log responses indicated thin, hydrocarbon filled stringers of sand positioned above the massive Grid sandstone. Cuttings exhibited calcareous sand with traces of hydrocarbon stain and with spotty to even, bright, bluish white, direct fluorescence with instant, white cut fluorescence. MDT hydrocarbon samples confirmed the presence of oil, with a density of 0.857 g/cm³. No shows were seen in the underlying, massive Grid sandstone with logs confirming a water-wet sandstone. Furthermore gas was found in the Heimdal Formation w

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/4711, documented in the API reference.