East Java Sea Lengo-2 well DSTs at 21.2 MMscfd

Gas flowed at a maximum rate of 21.2 MMscfd at the Lengo-2 appraisal well in the East Java Sea offshore Indonesia and had the same composition as the gas from the 2008 Lengo-1 discovery well, said AWE Ltd., Sydney.

KrisEnergy Satria Ltd., Singapore, operates the well on the western segment of the two-part Bulu PSC. The gas flow came on a drillstem test of the Kujung I carbonate reservoir at 2,415-2,571 ft.

Final gas composition results from this and an earlier DST are expected within weeks, but preliminary analysis of the latest test indicated 66% methane, 10% carbon dioxide, 21% nitrogen, and 3% other hydrocarbon gases, AWE said. KrisEnergy also recovered 79 ft of core at 2,485-2,571 ft and ran wireline logs.

A previous DST of Kujung at 2,415-85 ft at Lengo-2 flowed at a maximum rate of 4.6 MMscfd (OGJ Online, May 7, 2013). Maximum flow rate from Kujung at Lengo-1 was 12.8 MMscfd. KrisEnergy will deepen Lengo-2 to 2,717 ft to tag basement.

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