Sampang partners offshore Indonesia addressing gas declines from Oyong, Wortel wells

Medco Energi, operator of the Sampang concession offshore Java, is working to offset the impact of water production on the late-life Oyong and Wortel gas fields.

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Cue Energy

Oct. 29, 2025

Map: Sampang PSC offshore Indonesia — Gas production from Oyong and Wortel fields continues to have steeper decline in late life than expected due to recent severe
water production, Cue Energy reported.

Gas production from the Oyong and Wortel fields in the Sampang PSC offshore East Java is undergoing a steeper late-life dip than expected, said partner Cue Energy in an operations update.

The cause is a recent surge in water production.

Operator Medco Energi is assessing ways of optimizing production from the existing wells.

Onshore, a compressor is undergoing installation at the Grati gas processing plant. This should lower suction pressure at the plant, enhancing production and gas recovery from Oyong and Wortel fields.