Qua Mit Vang - exploration drilling result

PREMIER OIL PLC

("Premier")

Qua Mit Vang - exploration drilling result

27 October 2011

Premier today announces that the exploration well, 104-QMV-1X, known as Qua Mit Vang, in Block 104-109/05 offshore Vietnam has drilled to a total depth of 3,832 metres in fractured basement rock. A Drill Stem Test was conducted across the basement interval and the well flowed gas with 99 percent carbon dioxide. The well is being plugged and abandoned as a dry hole.