6406/12-5 S is a wildcat exploration wellbore in the Norwegian Sea, drilled by VNG Norge AS, entered Sep 22, 2015, to 4,297 m in the Melke Fm.
- 4,297
- m total depth · 3,734 m vertical
- 336
- m water depth
- Sep 22, 2015
- entered · completed Nov 12, 2015
- Melke Fm
- at total depth · Late Jurassic
- —
- m of core
- 130
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED FEB 20, 2026 · RELEASED NOV 12, 2017
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- TRANSOCEAN ARCTIC · Semisub steel
- Drilling days
- 52
- Kelly bushing elevation
- 24 m
- Maximum inclination
- 43.59999847°
- Drilling permit
- 1599-L
- Licensing round
- TFO2010
- Plugged and abandoned
- —
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 64.06051° N, 6.84412° E
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 6406/12-5 S was drilled to test the central part of the Boomerang prospect on the Halten Terrace in the Norwegian Sea. The primary objective was to establish the presence and volume of moveable hydrocarbons in Intra Spekk and Melk formation sandstones
Operations and results
Wildcat well 6406/12-5 S was spudded with the semi-submersible installation Transocean Arctic on 22 September 2015 and drilled to TD at 4297 m (3734 m TVD) m in the Late Jurassic Melke Formation. After drilling top hole to 433 m a 9 7/8" pilot hole was drilled to 1134 m to investigate possible shallow gas intervals in the Nordland Group. No shallow gas or over-pressured water bearing zones were observed. In the 8 ½” section the string got stuck at 4107 m and after pulling free it was discovered that most of the bit body was lost in hole. Consequently, the hole was side-tracked from 3937 m and drilled without further significant problems to TD at 4297 m (3734 m TVD) in the Late Jurassic Melke Formation. The well was drilled with seawater and hi-vis pills down to 1225 m and with XP-07 oil-based mud from 1225 m to TD.
Top Spekk Formation was reached at 3741 m (3192.3 m TVD) and consisted of laminated mudstone overlying a thin sandstone with moderate reservoir quality resting on a 140 m thick unit of mainly silty to fine-grained sandstones with a shaly upper part. Top of the Melke Formation was reached at 3920.5 m (3347.8 m TVD) and is followed by 218 m TVD of intra Melke sandstones of moderate quality with top at 3962 m (3384.3 m TVD). Petrophysical interpretation showed that reservoir porosities in the intra Spekk and Melke sandstones were good ranging from 8 to 20 % with permeabilities of up to 1200 mD based on sidewall core analyses. The pressure d
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.
Developers: this page as JSON is GET /v1/data/norway/wells/7787, documented in the API reference.