Origin Energy has started gas production from the Halladale and Speculant fields in the Otway Basin in offshore Victoria, Australia.  

The fields form part of the Halladale/Speculant project, which is 100%-owned by the company and is expected to increase production at the Otway Gas Plant by up to 80TJ/day.

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Origin Integrated Gas CEO David Baldwin said: “Gas has a growing role both as a lower emissions replacement for coal and providing reliability to support growth in renewables and the Halladale/Speculant project will support that growing demand.

"Gas has a growing role both as a lower emissions replacement for coal and providing reliability to support growth in renewables."

“Our strategy is connecting resources to markets and we are delighted that Halladale/Speculant will contribute to domestic gas supply and support the growth in renewables.”

The project is delivered in two parts and involved drilling from a land base 30km east of Warrnambool in a bid to access offshore reservoir locations 5km off the coast in the Otway Basin.

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As part of the project, the new 33km Halladale/Speculant pipeline connecting the well site to gas plant was also constructed.

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The Otway Basin is a north-west to south-east striking, divergent margin, rift and drift basin. It stretches approximately 500km from Cape Jaffa in South Australia to north-west Tasmania.

It forms part of the 4,000km long Jurassic-Cretaceous Australian Southern Rift System. Its primary exploration targets are the Waarre Sandstone at the base of the Sherbrook Group and sandstones of the Pretty Hill Formation and Katnook Sandstone/Windermere Sandstone Member in the Early Cretaceous section.