Mubadala also confirmed the Sirih-1 discovery, the third from its 2013-14 exploration program targeting a series of carbonate pinnacles within Block SK320.
The Pegaga-2 well was drilled to a total depth of 2,685m and a test of the main gas-bearing zones produced 30 million cubic feet to 50 million cubic feet per day of good-quality gas with condensate.
The Sirih-1 well was drilled to a total depth of 3,000m and penetrated a 293m gas column within the target reservoir and was plugged and abandoned as planned while Sintok-1 well was drilled to a total depth of 2,775m and penetrated a 290m gas column.
Mubadala operates the Block SK320 with 55% stake while Petronas Carigali and Sarawak Shell Berhad hold 25% and 20% respectively.
Mubadala Petroleum CEO Maurizio La Noce said: "We are building up our team and will be working closely with our partners, PETRONAS Carigali and Shell, to evaluate all the options for commercialising the resources in the block in due course."