`Giant’ Gro needs further delineation

Norske Shell has completed a wildcat well in a remote location in the northern Norwegian Sea, having proven a potentially large gas structure.

Offshore staff

OSLO -- Norske Shell has completed a wildcat well in a remote location in the northern Norwegian Sea, having proven a potentially large gas structure.

The location is 150 km (93 mi) northwest of the Victoria gas discovery, in water depths of 1,376 m (4,514 ft). This is the deepest for any find on the Norwegian shelf to date, according to the Norwegian Petroleum Directorate (NPD).

Norske Shell was aiming to prove petroleum in the Gro prospect in Upper Cretaceous reservoir rocks. The well, drilled by the Leiv Eiriksson, encountered a 16 m gas column in a reservoir of varying quality.

NPD says there is great uncertainty over the size of the find, currently estimated at anything between 10-100 bcm. The well was not formation tested, but there was extensive sampling and data collection.

Further delineation drilling is needed, it adds, to clarify the resource potential and the possibility of additional gas volumes.

This was the first exploratory well on license PL 326, awarded in 2004 under the 18th Norwegian licensing round. The well was drilled to a vertical subsurface depth of 3,805 m (12,483 ft) and will be plugged and abandoned.

06/19/2009

More in Drilling & Completion