Equinor and its partners have drilled a dry well in the “Heidrun Cellar SE” prospect under the Heidrun field in the Norwegian Sea.

Wildcat well 6507/8-D-4 CH was drilled in production licence 124, 240 kilometres west of Sandnessjøen.

This is the tenth wildcat well in the production licence, which was awarded in 1986 (licensing round 10-B).

The licensees in the production licence are Equinor (operator), ConocoPhillips, Petoro and Vår Energi.

The well was drilled by the Transocean Encourage drilling rig.

Geological information

The well's objective was to prove petroleum in deeper stratigraphic levels on the Heidrun field, in reservoir rocks from the Early Jurassic (Åre Formation) and Late Triassic ("Grey Beds").

The well encountered sandstone layers in the Åre Formation/Grey Beds with an overall thickness of about 161 metres and good to very good reservoir quality.

The well was not formation-tested, but data was acquired.

Well 6507/8-D-4 CH was drilled to a vertical depth of 2910 metres below sea level and was terminated in the Grey Beds from the Late Triassic.

Water depth at the site is 357 metres, and the well has been permanently plugged and abandoned.

KeyFacts Energy: Equinor Norway country profile