East Java Sea Lengo gas field may be commercial

A group led by a subsidiary of KrisEnergy Ltd., Singapore, has tested gas at the Lengo-2 appraisal well on the Bulu PSC in the East Java Sea offshore Indonesia.

Gas flowed at a maximum rate of 4.6 MMscfd on a drillstem test of the Kujung formation at 2,415-85 ft, prompting partner AWE Ltd., Sydney, to state that “subject to a successful evaluation of the composition of the gas, plans remain on track for the well to confirm the accumulation as suitable for a future commercial development.”

The well is projected to continue drilling to 2,726 ft to tag basement.

Bruce Clement, AWE managing director, said “The results to date are in line with predrill expectations and are providing us with valuable data that will help us progress the Lengo field to a commercial development decision.”

The KrisEnergy-operated well was at 2,485 ft measured depth running in hole with a core assembly in preparation for cutting a second 90-ft of core in the primary objective Kujung 1 carbonate reservoir.

To date, AWE said, a single core has been cut 2,425-85 ft, recovering an estimated 58 ft of carbonate Kujung 1 reservoir formation.

The results of the DST confirm that the previously untested upper part of the primary objective at Lengo-1 has reservoir quality sufficient to contribute potential future production at the Lengo-2 location.

After cutting the second 90-ft core, the plan is to run wireline logs and a second DST that will evaluate the entire Kujung 1 formation intersected, drilling to TD, running final wireline logs, and plugging the well as intended.

Interests in the Bulu PSC are KrisEnergy Satria Ltd. and AWE via subsidiaries 42.5% each, PT Satria Energindo 10%, and PT Satria Wijaya Kusuma 5%.

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