Fossil Energy – Oil Discovery
Vår Energi has confirmed its Zagato oil discovery in the Barents Sea following successful results from appraisal well 7122/8-4 S, which was drilled just north of the Goliat field by the COSL Prospector rig.
Located in production licence 229, around 90 kilometres from Hammerfest, the well confirmed the presence of hydrocarbons in the same formations as those identified in the original discovery well, 7122/8-3 S, announced in February.
The discovery is now estimated to hold between 2.8 and 10.1 million standard cubic metres of recoverable oil equivalent, equivalent to 18–64 million barrels.
COSL’s COSL Prospector rig drilled the well to measured and vertical depths of 2,986 and 2,793 metres below sea level, respectively, terminating in the Klappmyss Formation of the Lower Triassic. The water depth at the site is 406 metres and the well has been permanently plugged and abandoned upon completion.
The appraisal confirmed an 11-metre oil column in the Tubåen Formation within the Realgrunnen Subgroup, with a total of 8.5 metres of high-quality reservoir rock.
Additional reservoir sections were identified in the Kobbe Formation, totaling 48 meters, although these were aquiferous. An 80-metre oil column was also proven in the Klappmyss Formation, albeit with poor reservoir quality.
No formation testing was carried out, but extensive data acquisition and sampling were conducted.
