ID: 268
OBJECTID: 268
wlbNpdidWellbore: 273
wlbName: 2/8-4
wlbHistory:

General

Well 2/8-4 was drilled on the Valhall structure in the Southern North Sea

Operations and results

Wildcat well 2/8-4 was spudded with the jack-up installation Zapata Explorer on 28 April 1973 and drilled to TD at 2852 m.

Top Shetland Group was encountered with oil shows at 2577 m. The Shetland Group had only one meter of Tor Formation on top of the Hod Formation.

Three very short cores were cut: core 1 from 2607.3 to 2698.2 m, core 2 from 2597.8 to 2598.7 m, and core 3 from 2584.1 m to 2585 m. No wire line fluid samples were taken.

The well was permanently abandoned on 7 June 1973, initially as a dry well with shows. After the 2/8-6 Valhall discovery well two years later it was re-classified to oil appraisal well.

Testing

Two drill stem tests were performed. In both tests the chalk was stimulated by acid.

DST 1 tested the interval 2603 to 2622.5 m. The test produced 5.7 m3 load water during a 6.5 hrs flow

DST 2 tested the interval 2578.6 to 2587.8 m. This test produced 2.5 m3 load water and 0.5 Sm3 26 deg API oil during a 12 hrs flow.

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