Barents Sea Norvarg well proves gas at deeper levels
Total has completed its appraisal well (7225/3-2) test on the Norvarg gas field in the Barents Sea.
The semisubmersibleLeiv Eirkisson drilled the well in license PL 535, 275 km (171 mi) north of the Hammerfest LNG plant on Melkøya Island in northern Norway, in a water depth of 377 m (1,237 ft). According to partner Rocksource, the aim was to delineate the Triassic Kobbe formation in the eastern segment of the discovery.
Two production tests were conducted in the upper and lower parts of the formation, with the well flowing at up to 6.2 MMcf/d (175,564 cm/d) on a 52/64-in. choke. The well was completed with downhole gauges capable of transmitting data post-abandonment, and this is expected to help clarify the extent of the reservoir.
Results of the appraisal well confirm the extensive nature of the discovery and the presence of movable gas throughout the Kobbe reservoir, with no water contact seen. However, reservoir quality is variable and further analysis is needed to confirm the productivity of some reservoir intervals.
The partners will use the acquired data to evaluate estimated recoverable hydrocarbons and potential future development options. Moveable gas identified in deeper levels of the reservoir than those in the exploration well will be a factor.