Calgary-based Antrim Energy declared Tuesday that the second well at its Causeway development in the U.K. North Sea will be a future producer and hinted the well has struck through a new reservoir.

Well 211/22a-7a will be cased after directional drilling took it through 3,645 metres of Jurassic sandstone and to within a kilometre of the 211/22a-6 discovery of July which tested 6,300 barrels of light oil per day.

The 22a-7A well intersected a gross oil column of 203 feet in the Tarbert and Ness formations. Confidence ran high with the drilling and precluded the need to test the well.

“A net pay thickness of 50 ft in very permeable sandstones with average porosity of 19 percent is estimated from the electric log data and a series of MDT tests,” a statement said.

Meanwhile, a third Causeway well will target the Ness sandstone on the southwestern flank of the Causeway structure later this week.