The well was drilled approx. ten kilometres north of the Troll C facility in the North Sea.
The well's primary exploration target was to prove petroleum in Late Jurassic reservoir rocks (the Sognefjord formation). Secondary exploration targets were to prove petroleum in the Paleocenic rocks (the Lista formation) and Middle/Late Jurassic reservoir rocks (the Krossfjord and Fensfjord formations and the Brent group).
In both the primary and secondary exploration targets the well encountered reservoir rocks and reservoir quality as expected.
Comprehensive data acquisition and sampling have been carried out.
The well is the first exploration well in production licence 551. The licence was awarded in APA 2009.
The well was drilled to a vertical depth of 2082 metres below sea level and was terminated in the Brent group in reservoir rocks from the Middle Jurassic.
Water depth at the site is 348 metres. The well will now be permanently plugged and abandoned.
Well 31/3-4 was drilled by the Transocean Barents drilling facility, which will now proceed to production licence 659 in the Barents Sea to drill wildcat well 7222/11-2, where Det norske oljeselskap ASA is the operator.