• The A28 and A28-ST1 wells encountered 72 ft and 75 ft of net oil pay respectively in deeper reservoir sections (2.0 and 2.1) at Wassana. • The A28 well results proved the presence of oil down to 5,594 ft TVD, 77 ft below previous the estimate of 5,517 ft, which was the depth that was used to estimate reserves. A28 also encountered a thicker package of reservoir sands and new oil-filled sands that have not been previously developed. • The A28-ST1 well confirmed the presence of oil in an untes ....