Exploration well 34/7-D-4 H was drilled to a total measured depth of 4,572 meters from Ocean Vanguard, with oil proven in Brent Group rocks dating from the Jurassic.
To optimize production from the area, a sidetrack was immediately drilled from this well as 34/7-D-4 AH to a total measured depth of 4,400 meters.
Plans call for the well to be completed for production by the Borgland Dolphin rig during October before it is brought on stream.
"It's too early to say anything about the size of this discovery," says Elin Loktu Rosnes, manager for the Tordis/Vigdis subsurface department.
"But even minor volumes will be economic to produce since we already have established infrastructure in this area."
The M5 structure lies in production license 089, where the water depth is around 251 meters.
Vigdis has been developed with subsea templates tied back to Statoil's Snorre A tension leg platform, with wellstream transfer in two pipelines. Operator Statoil has 28.22 percent of PL 089. Its partners are Petoro with 30 percent, Hydro 13.28 percent, ExxonMobil 10.5 percent, Idemitsu Petroleum Norge 9.6 percent, Total 5.6 percent and RWE-Dea 2.8 percent.
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