Drilling Commenced at Sound Oil's Indonesia Well

Sound Oil announced that the Cataka-1 exploration well commenced drilling at 2300 Indonesian local time (1600 GMT) on December 31, 2011. It is currently drilling ahead in 17 1/2" section towards the Parigi Formation limestone reservoir objective and is scheduled to take 21 days to drill. The well will be drilled as a deviated hole to a total measured depth of 6,995 ft (2,132 m) to target P50 gross prospective resources of 470 Bscf.