Equinor discovers hydrocarbons southwest of Brønnøysund

Equinor discovered oil, condensate, and gas in the Tyrihans Øst prospect in production license (PL) 1112, about 250 km southwest of Brønnøysund in the Norwegian Sea.

Exploration well 6407/1-B-2 H was drilled in 275 m of water by the Transocean Encourage rig to a measured depth of 4,590 m and 4,045-m TVD below sea level and was terminated in the Ror formation in the Middle Jurassic.

The primary target for the well was to prove petroleum in reservoir rocks in the Garn formation (Fangst Group) in the Middle Jurassic. The secondary exploration target was to prove petroleum in reservoir rocks in the Ile formation in the Middle Jurassic.

Well 6407/1-B-2-H encountered about a 6 m condensate-light oil column in the Garn formation in sandstone with poor to moderate reservoir properties. The well encountered about a 63-m gas-condensate column in the Ile formation in sandstone with poor to good reservoir properties.

The preliminary calculation of the size of the discovery is 0.2-1.3 million std cu m of recoverable oil equivalent, corresponding to 1-8 MMboe.

The well was not formation-tested and will be temporarily plugged and abandoned. The licensees will consider a production well from the same location, tied back to the Kristin installation.

Transocean Encourage left the location to drill a production well on Åsgard. 

Equinor is operator at PL 1121 (40%) with partners Vår Energi ASA (30%) and DNO Norge AS (30%).