CALGARY -- Antrim Energy has completed drilling operations on well 21/28a-9 on the Fyne field in the UK Central North Sea.
The multilateral 28a-9 well was drilled as planned with three legs – one pilot hole and two sidetracks into the Eocene Tay Sandstone. All three holes encountered significant oil columns with thick pay intervals. As planned, the third and final leg (21/28a-9y) contains the Tay Sandstone section that will be completed and tested. This section drilled approximately 52 ft (16 m) TVD of net oil pay and 35 ft (11 m) TVD of net gas pay in a 332 ft (101 m) TVD hydrocarbon column. As designed, the 28a-9y well was drilled at a 60 degree angle penetrating approximately 109 ft (33 m) MD of net oil pay and 74 ft (23 m) MD of net gas pay.
Log analysis indicates that the Tay sandstones penetrated in all three legs of the well are very porous (average 33%). In addition, the reservoir sampling tool (Modular Formation Dynamics Tester) indicates that the sandstone reservoirs have high permeabilities generally in excess of 1000 mD. The Tay Sandstone previously tested at rates of up to 3,600 b/d of medium gravity (25° API) oil from the Fyne discovery well (21/28a-2) in 1986.
The Fyne field is on trend with several other Tay fields in the area, including the West Guillemot, Pict, and Saxon developments. Fyne is also situated approximately 20 km (12 mi) from existing infrastructure which provide production services for several fields in the area. Completion and testing operations will start immediately with results expected from the testing program in April.