PETROLIAM Nasional Bhd (Petronas) has made major gas discoveries in three of its upstream hydrocarbon ventures, including one onshore.
Petronas and its partners made the discoveries offshore Sarawak, Sumatra in Indonesia and at North Bonaparte Basin, Australia.
The first discovery is via the Pegaga-1 well in Block SK320, offshore Sarawak, which is operated by Mubadala Petroleum.
Petronas, through its subsidiary Petronas Carigali Sdn Bhd, has a 25 per cent interest in the block.
The Pegaga-1 well, located about 250km northwest of Bintulu, was drilled to a total depth of 2,029m and encountered a 247m column of gas.
Pegaga-1 is the second successful gas well for the joint venture partners in Block SK320 after the M2-2 well drilled last year.
In Sumatra, PetroChina, which is the operator and Petronas' partner in the onshore Jabung Block, made its gas discovery through the NEB Base-1 well.
"This discovery is significant as it confirms the presence of hydrocarbons in a new exploration play consisting of fractured granite in the block," Petronas said.
PetroChina drilled the NEB Base-1 well to a depth of 2,521m.
Planning for testing operations at the well is in progress.
Petronas holds a 42.85 per cent equity in the Jabung Block.
Overall, the national oil company is present in seven blocks in Indonesia, where it operates three of the ventures.
In Australia, Petronas said the Evans Shoal North-1 appraisal well in the Timor Sea has been successfully drilled to the target depth of 3,955m.
The field in the North Bonaparte Basin is located about 300km northwest of Darwin.
The partners in the joint venture are Shell (32.5 per cent), Eni (32.5 per cent), Petronas (25 per cent) and Osaka Gas (10 per cent). The well is operated by Eni on behalf of the joint venture.
Meanwhile, Petronas said the discovery made in Block SK320 proves that there is still hydrocarbon potential in the Sarawak Basin.
Several oil and gas multinationals have been successful in their recent exploration drilling in the state, with several notable discoveries such as NC3/NC8, B14, Tukau Timur Deep, Kuang North and Kasawari.