Assessment of Otway Basin Hot Sedimentary Aquifer Systems for Geothermal and Water Uses

Abstract

The Otway Basin, spanning the southern parts of Victoria and South Australia (Figure 1), is the location of a new regional geological and geothermal study by FrOG Tech Pty Ltd. In partnership with P.I.R.S.A., Geosciences Victoria and Geoscience Australia, the study integrates potential field and seismic data, information from both hydrocarbon exploration and water wells and thermal data to understand the nature of onshore and offshore Otway Basin Hot and Warm Sedimentary Aquifers and their inter-connections. The initial targeted formations within the fault controlled depocentres are Upper Jurassic to Lower Cretaceous synrift and postrift, nonmarine, interbedded sandstones, shales and coals of the Otway Supergroup aquifers.