PTT Exploration and Production Public Company (PTTEP) has discovered a large gas field with its first well on the SK410B block offshore Sarawak, Malaysia.

The company’s subsidiary PTTEP HK Offshore (Malaysia Branch), or PTTEP HKO, encountered 252m of net gas pay, suggesting a multi-trillion cubic feet (tcf) gas discovery.

The drilling of the well started in March 2019, targeting non-associated gas in the primary target of the Middle Miocene cycle IV/V carbonate reservoir. The well was drilled to a depth of 3,810m with a completion-constrained rate of 41.3mmscfd and 246 barrel of condensate per day.

PTTEP claims that the drilling result of the Lang Lebah-1RDR2 is historically the company’s largest discovery and it will require additional drilling for confirming the upside potential.

The Sarawak SK410B project is situated in the shallow waters, 90km offshore Sarawak, with acreages of 1,800km². The project is operated by PTTEP HKO with a 42.5% working interest. KUFPEC Malaysia and Petronas Carigali are partners in the project with 42.5% and 15% interest respectively.

In March, PTTEP acquired Murphy Oil’s business in Malaysia worth $2.12bn. The company also won two exploration blocks off Malaysia coast.

Apart from the Sarawak SK410B project, PTTEP’s Malaysian portfolio includes the Sarawak SK417, which is assessing the petroleum potential and the Sarawak SK438 that is under drilling preparation of two exploration wells.

PTTEP also has producing project in Blocks B-17 and B-17-01 in Malaysia–Thailand Joint Development Area, and jointly invests with PTT in MLNG Train 9 project, a LNG liquefaction facility, through PTT Global LNG Company.