NORWAY · WELLBORES · NPDID 16

6407/2-2

Exploration · Appraisal · P&A · Gas/condensate · Saga Petroleum ASA · Åsgard · PL 074

8 documents: reports, logs, and plots →

6407/2-2 is an appraisal exploration wellbore in the Norwegian Sea, drilled by Saga Petroleum ASA, entered May 17, 1983, to 3,351 m in the Grey Beds (informal).

Discovery 6507/11-1 Midgard · On the map →

3,351
m total depth · 3,351 m vertical
258
m water depth
May 17, 1983
entered · completed Jul 31, 1983
Grey Beds (informal)
at total depth · Late Triassic
95.7
m of core in 12 cores
112
°C bottom-hole temperature

SODIR FACTPAGES · RECORD UPDATED NOV 4, 2026 · RELEASED JUL 31, 1985

On file for this wellbore

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

Drilling

Drilling facility
TREASURE SAGA · Semisub steel
Drilling days
76
Kelly bushing elevation
26 m
Maximum inclination
2°
Drilling permit
375-L
Licensing round
5
Plugged and abandoned
—
Core samples available
Yes
Cuttings samples available
No
Position · ED50
64.99434° N, 7.53141° E
Hydrocarbons in
Garn Fm · Middle Jurassic

Well history

WRITTEN BY THE NORWEGIAN OFFSHORE DIRECTORATE

General

Well 6407/2-2 is located east on the Halten Terrace off shore Mid Norway. The well tested the southern (Gamma) fault compartment of a horst with true vertical closure below the base Cretaceous level. The gas/condensate discovery well 6507/11-1 was located on the northern (Alpha) compartment of the same structure. The primary target of the well was the middle Jurassic sandstone; secondary target was Early Jurassic sandstone.

The well is Reference Well for the Melke Formation.

Operations and results

Wildcat well 6407/2-2 was spudded with the semi-submersible installation Treasure Saga on 17 May 1983 and drilled to TD at 3351 m, 71 m into the Triassic Grey Beds. After drilling the 26" hole the well was observed flowing and the mud weight was corrected. No other major problems occurred during drilling. After having drilled out of 13 3/8" casing shoe a cement plug was set from 1960 m - 1995 m, and one from 340 m - 400 m, due to temporarily plugging and abandonment of the well caused by strike The strike was efficient (no drilling progress was obtained) for 13 days, from June 6th to June 19th. The well was drilled with spud mud down to 865 m, with gypsum/polymer mud from 865 m to 1995 m, and with lignosulphonate mud from 1995 m to TD.

The well proved mainly claystones down to the Middle Jurassic Sandstone. The Cainozoic with a total thickness of 1809 m overlies the Late Cretaceous where the topmost Maastrichtian is missing. Two hundred and forty meter of Late Cretaceous and 81.5 m of Early Cretaceous is preserved, separated by an unconformity ranging in age from Middle Santonian to Albian. High gas readings were experienced in the upper part of the Cretaceous together with heavier hydrocarbons detected for the first time in the well. A study of wire line logs, sidewalls cores and hole response indicate that the gas was overpressured, and trapped in a non-reservoir lithology. Base Cretaceous unconformity was en

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/16, documented in the API reference.