15/9-17
Exploration · Wildcat · P&A · Gas/condensate · Den norske stats oljeselskap a.s · Sleipner Øst · PL 046
15/9-17 is a wildcat exploration wellbore in the North Sea, drilled by Den norske stats oljeselskap a.s, entered Dec 9, 1982, to 3,120 m in the Smith Bank Fm.
Discovery 15/9-17 Loke · On the map →
- 3,120
- m total depth · 3,116 m vertical
- 85
- m water depth
- Dec 9, 1982
- entered · completed Mar 30, 1983
- Smith Bank Fm
- at total depth · Triassic
- 148.3
- m of core in 10 cores
- 108
- °C bottom-hole temperature
SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED MAR 30, 1985
On file for this wellbore
What the Directorate holds from this wellbore. Each opens the section that lists it.
Drilling
- Drilling facility
- WEST VANGUARD · Semisub steel
- Drilling days
- 112
- Kelly bushing elevation
- 22 m
- Maximum inclination
- 1.5°
- Drilling permit
- 356-L
- Licensing round
- 3
- Plugged and abandoned
- —
- Core samples available
- Yes
- Cuttings samples available
- Yes
- Position · ED50
- 58.44561° N, 1.94822° E
- Hydrocarbons in
- Heimdal Fm · Paleocene
- Hydrocarbons in
- Skagerrak Fm · Triassic
- Hydrocarbons in
- Vestland Gp · Middle Jurassic
Well history
WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE
General
Well 15/9-17 was drilled on the Sleipner Terrace in the Viking Graben of the North Sea. The primary objectives were to test possible hydrocarbon accumulations in the Paleocene Heimdal Formation and in Jurassic/Triassic sandstones.
Operations and results
Wildcat well 15/9-17 was spudded with the semi-submersible installation West Vanguard and drilled to 3120 m in the Triassic Smith Bank Formation. A 12 1/4" pilot hole was drilled down to 519 m, but no indications of shallow gas was found. Bad weather caused some delay. Bad weather and repeated BOP problems caused some down time. The well was drilled with spud mud down to 500 m, with gypsum/polymer mud from 519 m to 2616 m, with Lignosulphonate/Drispac mud from 2616 m to 2950 m, and with Drispac from 2950 m to TD.
Both the Heimdal Formation and the Mesozoic sandstones contained gas and were tested.
The log evaluation indicated top of the hydrocarbon column in the Heimdal Formation at 2377.5 m. The logs indicated the gas/water contact at 2418.5 m, while pressure data gave a gas/water contact a bit shallower, at 2413 m. Weak and spotted shows were recorded on cored sandstones in the Heimdal Formation below the contact down to 2425 m, and from 2442 to 2450 m.
The top of the hydrocarbon column in the Mesozoic sandstones was at 2715 m (top Vestland Group). The column extended down into the Triassic. No definite gas/water contact was found but could be as deep as 2848 m. Shows were recorded on cored sandstones throughout this reservoir, getting weaker with depth.
No shows were seen outside of the hydrocarbon bearing sectio
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.
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