Malaysia's state-owned Petronas has participated in three gas discoveries at projects in Malaysia, Indonesia and Australia, the company said in a statement Thursday.
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Petronas Carigali owns a 25% interest in the Pegaga-1 well, in block SK320 offshore Sarawak, which is operated by Abu Dhabi's Mubadala Petroleum through a Malaysian affiliate. Pegaga-1, located about 250 km northwest of Bintulu in a water depth of 108 meters, was drilled to a total depth of 2,029 meters and encountered a 247 meter gas column, Petronas said.
"The well flowed gas to the surface and pressure data indicates the possibility of a substantial gas column still not penetrated by the well," the company added. "The operator plans to conduct further drilling to determine the volumes of the discovery and the gas quality."
Pegaga-1 is the second gas discovery in the block following the M5-2 well, drilled in 2012, and proves there is still hydrocarbon potential in the Sarawak Basin, Petronas said. Several oil and gas multinationals have recently made notable discoveries, such as NC3/NC8, B14, Tukau Timur Deep, Kuang North and Kasawari, in the basin, opening up several new hydrocarbon plays, the company added.
At the onshore Jabung block in Indonesia's Sumatra, operator PetroChina has made a gas discovery at 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," according to Petronas, which holds a 42.85% interest in the block.
The NEB Base-1 well was drilled to a depth of 2,521 meters and intersected more than 976 meters of granitic basement of Pre-Tertiary age, Petronas said. The well has been temporarily suspended and planning for testing operations is in progress.
Petronas has holdings in seven blocks in Indonesia, and is the operator of three of the ventures.
The company is also a partner in the Evans Shoal North-1 appraisal well in the Timor Sea off northern Australia. Italian operator Eni recently said the well had produced at a constrained rate of 30,000 Mcf/day.
The Evans Shoal gas field is located in the NT/P 48 exploration permit in the North Bonaparte Basin, about 300 km northwest of Darwin. It is held by Shell (32.5%), Eni (32.5%), Petronas (25%) and Osaka Gas (10%).
Following the announcement of the test results at Evans Shoal North-1, Eni estimated that field held at least 8 Tcf of gas in place. Evans Shoal was discovered in 1998 and had previously been estimated to hold up to 7 Tcf of gas.