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COVID-19 Updates for resources sector: fee relief | To report a serious incident to DEM, as required by Section 85(2) of the Petroleum and Geothermal Energy Act 2000, licensees should contact the serious incident reporting hotline on: (08) 8463 6666. For more information please visit the Compliance and Monitoring webpage | DEM-ERD has just released the first “Basin in a Box” data-package covering the Simpson and Pedirka Basins. The dataset is available via the “Data and Publications” page. Each package is a consolidated set of seismic and well data to facilitate new ventures and exploration assessments of frontier basins in South Australia. Data releases for other frontier basins will follow. | Changes to data submission requirements during COVID-19 restrictions. For further information see here.

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Petroleum Basins

South Australia is situated between the ancient Archaean Shield of Western Australia and the mobile orogenic belts of the eastern states. As a result of this tectonic setting, the geological record in South Australia has preserved a unique history of sedimentation from the Neoproterozoic to Ordovician, and from the Early Devonian to Tertiary.

The basins may be subdivided into three groups based on their relative stratigraphic position:

The Cooper and Eromanga basins, which span North East South Australia and South West Queensland, comprise Australia’s largest onshore petroleum province. Permian and younger sedimentary basins beyond the main producing region contain similar largely non-marine sequences in intracratonic settings. Continental margin basins on and offshore have very thick Cretaceous fill and include the Otway Basin, a proven gas province. In several instances there are identified, mature source rocks for petroleum in lacustrine and marginal marine settings associated with reservoir sands. These occur not only in Permian and Cretaceous rocks, but also in basins with thick Neoproterozoic to Ordovician clastics and carbonates with additional source potential in marine settings.

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Resource Plays

The coal seam gas potential of the state is now being addressed with exploration programs commencing in coal-bearing basins ranging from Permian – Tertiary in age. Other unconventional oil and gas plays, including shale gas, shale oil, basin centred (continuous) gas, in situ gasification of coal and coal to liquids projects are being targeted by explorers now.

More information about Resource Plays and for further information go to Roundtable for Oil & Gas.

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South Australia has large regions of interpreted high crustal heat flow and elevated geothermal gradients often associated with buried Mesoproterozoic to Carboniferous granitic bodies, which form key exploration targets for Engineered Geothermal Systems. Other potential geothermal energy targets include known Hot Sedimentary Aquifer systems in the  Great Artesian Basin in north-eastern South Australia and the Otway Basin in the State’s south-east.

More information on Geothermal