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Industry Sponsors Geodynamics Limited Geodynamics Limited, Australia‘s most advanced geothermal energy developer, is a public company limited by shares, incorporated and domiciled in Australia, and was listed on the Australian Securities Exchange on September 2002. Geodynamics specifically focuses on the economic extraction of heat from hot rocks using enhanced geothermal systems (EGS) technology. While the Company holds geothermal exploration licences in South Australia, New South Wales and Queensland, the majority of efforts are currently focused on extracting heat from its geothermal tenements near Innamincka in South Australia, where high heat production granite buried 3.6-4 km beneath the Cooper and Eromanga Basins approaches temperatures of 280 °C at 5 km depth. During 2010, Geodynamics carried out a major stimulation of well Jolokia 1, located about 10 km west of its Habanero project. The stimulation followed an exhaustive re-design of the Jolokia 1 completion following the Habanero 3 casing failure in 2009. Although temperature and stress conditions were as expected, the stimulation was less successful than predicted, due to only steeply dipping fractures being activated. It was concluded that optimally oriented, shallowly dipping fractures were not available in the 4,325-4,911 (TD) m depth interval stimulated. The current plan is to return to Habanero and drill new well Habanero 4 near Habanero 3 and commission a 1 MWe power station using the Habanero 4-Habanero 1 loop. Green Rock Energy Limited Green Rock Energy Limited is a public company listed on the Australian Securities Exchange whose focus is on developing geothermal energy in Australia and in Europe. The Company plans to develop two commercial scale power projects using geothermal fluid obtained from hot sedimentary aquifers. One project is in Hungary and the other in the north Perth Basin in Western Australia. There is evidence from previous petroleum wells at both projects that suitable temperatures can be obtained at reasonable target depths. During 2010, the Company‘s activities for both projects have been directed to proving there is reservoir capacity and geothermal fluid flow potential to sustain commercial scale power projects. In 2010, difficulties with obtaining funding for direct use projects in Australia, led Green Rock to shift focus to electricity production from deep sedimentary aquifers in the northern Perth Basin where high heat flows are known to exist. Green Rock holds seven Permits (known as the Mid- West Geothermal Project) occupying 2,094 km2 in the north Perth Basin where there is good geological resource potential for power generation. There are 39 petroleum wells in the Permits where the temperature in sediments is estimated to be over 150 °C at depths less than 3,500 m, sufficient to generate electricity commercially, provided that sufficient geothermal water recovery flow rates can be achieved. Joint venture company CEGE (Central European Geothermal Energy), owned by Green Rock (50%) and MOL (50%), the latter with a market capitalisation of over US$ 10 billion, aims to generate electricity for distribution and sale in Hungary. In 2010, after obtaining very positive results from evaluation of a former MOL petroleum well that intersected hot geothermal water, CEGE purchased the well and is now pursuing rights and approvals to proceed with drilling a second well in 2012. Green Rock is also searching for funding via a ―farm-in‖ before it begins deep drilling, fracture stimulation and flow testing for its Olympic Dam EGS project in South Australia. Participation in an R&D development of a surface heat probe continued with field testing. 16PDF Image | Geothermal Research and Tech IEA
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