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%.
