ID: 313
OBJECTID: 313
wlbNpdidWellbore: 318
wlbName: 15/6-3
wlbHistory:

General

Well 15/6-3 was drilled in the Ve Sub-basin in the south Viking Graben in the North Sea. The primary objective was to test the Dogger Sands (Middle Jurassic), which were gas bearing in 15/6-2 R, at a structurally higher position on a large north south trending anticline.

Operations and results

Wildcat well 15/6-3 was spudded with the semi-submersible installation Drillmaster on 5 September 1974 and drilled to TD at 3795 m in Late Triassic sediments of the Skagerrak Formation. A lignosulphonate seawater mud was used to drill the well.

The Dogger sand from top at 3488 m to 3579 m was hydrocarbon bearing. The resistivity log indicate gas down to a massive coal layer at ca 3562 m. The true gas/water contact was not established. There was 63 m of net gas bearing sand with average porosity 21% and average water saturation 21.%. The Triassic was not a viable reservoir. The only major shows in the well were in the Dogger reservoir sands.

A total of 125.8 m core was recovered (90.7 % overall recovery) in ten cores in the interval 3512.2 to  3650.9 m. FIT fluid samples were taken at 3505 m (gas, water, mud  and trace oil), 3553 m (gas, water, mud and trace oil), 3557 m (gas, mud filtrate and mud), and 3575 m (mud filtrate and mud).

The well was permanently abandoned on 19 December 1974 m as a gas/condensate discovery.

Testing

Two production tests were run.

The first was between 3601.2 and 3604.3 m, this failed to flow.

wlbHistoryDateUpdated: 2016-07-06T00:00:00