Faroe Petroleum has reported that drilling has started at the Fogelberg appraisal well and contingent sidetrack 6506/9 4A and 4S in the Norwegian North Sea.

The oil and gas discovery at Fogelberg was made in April 2010 in licence PL433.

According to the company, gas and condensate was identified in well 6506/9-2 S in the Middle Jurassic Garn and Ile formations.

Faroe Petroleum chief executive Graham Stewart said: “We are pleased to announce the spud of the Fogelberg appraisal well, which aims to de-risk and prove up commercial volumes in the Fogelberg field ahead of any decision to develop the field.

“Fogelberg was one of Faroe’s earlier discoveries and has the potential to join a number of development and pre-development projects, which are on track to significantly grow Faroe’s production, cash-flow, and value in the coming years.”

The discovery has an estimated gross size of between 105Bcf and 530Bcf of recoverable gas and condensate.

“This well has the potential to join a number of development and pre-development projects, which are on track to significantly grow Faroe’s production, cash-flow, and value.”

Due to the large size of the volumetric range, the company has taken up the appraisal well in order to narrow this range in the reserves estimates.

Data from the appraisal will also provide additional information for development planning.

Fogelberg is 18km north-west of the producing Åsgard complex from where gas and condensate are transported to several landing points on the European continent.

Island Innovator semi-submersible drilling rig will be used to drill the appraisal well.

Faroe Petroleum has a 28.3% stake in Fogelberg, which is operated by Spirit Energy Norge with a 51.7% interest.

PGNIG Upstream Norway holds a 20% interest in the licence.