Renmark Project (GELs 241 & 242)

The two new contiguous GELs cover the township of Renmark North and adjacent districts and capture the deepest portion of the Renmark Trough, a fault bounded sub-basin of the Murray Basin System (Figure 1).  The estimated depth to basement, based on seismic data, is about 3.5 kilometres.  Measured thermal gradients in the area are elevated and potentially around 40 degrees per kilometre.  The current exploration initiative is looking to test a hot sedimentary aquifer geothermal model by directly sourcing hot brine waters from aquifers near the base of the trough.

Two high voltage 132 kV transmission lines run through the tenement holding.  Network analysis of the transmission system has confirmed that this is a strong portion of the National Electricity Grid and could easily support a large scale geothermal development.  Whilst the region is not expected to yield as high a geothermal gradient as Petratherm's flagship Paralana Project, improved efficiencies can be afforded by its proximity to this transmission infrastructure and the potential for natural hot geothermal waters requiring minimal engineering costs to develop.



Figure 1 - A gravity image of the Renmark area indicating the locaion of the GELs and their relationship to transmission infrastructure and townships.  The dark blue shadings on the gravity image represent the deepest, and thus the most prospective portions of the Renmark Trough.  The boundaries of the GELs are outlined in red and clearly bracket the deepest parts of the sub-basin.