The initial review of the preliminary 3D volume confirms the existence of the Inishmore prospect with estimated mean case recoverable reserves of 1.3 TCF.

Additional large structures have also been identified within the survey area with preliminary estimates of more than 3 TCF of natural gas recoverable across the license.

San Leon chairman Oisín Fanning said that the program was delivered within schedule and under budget at a cost of under $6m.

San Leon is focused on the exploration and production of oil and gas projects in Europe and North Africa.