Origin-led group completes Yolla field enhancement project

Origin Energy Ltd., Sydney, and its partners in the BassGas joint venture reported the completion of its Mid Life Enhancement project at Yolla gas-condensate field in license T/L1 in the Bass basin offshore northern Tasmania in the Bass Strait.

Origin Energy Ltd., Sydney, and its partners in the BassGas joint venture reported the completion of its Mid Life Enhancement project at Yolla gas-condensate field in license T/L1 in the Bass basin offshore northern Tasmania in the Bass Strait.

The final phase of the project—installation and commissioning of compressor and condensate pumping unit on the Yolla-A platform—was completed last week with compression start-up achieved ahead of time and under budget.

The work followed an earlier phase of drilling and completing the final two development wells at Yolla-5 and Yolla-6 in 2015 (OGJ Online, Mar. 16, 2015).

Compression of Yolla gas began on June 12 and production reached the facility design capacity of 67 terajoules/day 2 weeks later.

The JV participants are now working on development concept studies for nearby Trefoil field in retention licence T/RL2, which is similar to Yolla in terms of its gas-condensate mix.

Interest holders in BassGas are operator Origin Energy 42.5%, AWE Ltd. 35%, Toyota Tsusho Gas E&P 11.25%, and Prize Petroleum International Pte. Ltd. 11.25%.

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