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Geothermal Energy Resources in Australia
Geothermal Resources Map
Temperature at a depth of 5 km in Australia. Contours
75, 100, 125, 150, 175, and 200oC. Redrawn from
Cawood (1996), after Doone Wyborn and Prame Chopra
of AGSO. Reproduced courtesy of Australian Geographic.
http://www.geothermie.de/egec_geothernet/menu/frameset.htm
>> Status of the Geothermal Industry in Austrlia
One cubic kilometre of hot granite at 250 degrees
centigrade has the stored energy equivalent of 40
million barrels of oil. Australia has large volumes
of identified high heat production granites within
3 to 5km from the surface. This represents a vast
resource of clean energy that can potentially be
tapped by hot dry rock geothermal technology.
The map shows areas in Australia where estimated
temperatures at 5km depth are above 225oC. It is
the result of a study of thousands of existing exploration
wells (mostly oil and gas) by two of Geodynamics'
directors (Wyborn and Chopra) for the Energy Research
and Development Corporation.
Two states in Australia (New South Wales and South
Australia) have adapted their mineral legislation
to enable the granting of HDR geothermal exploration
licences. Geodynamics has secured two HDR geothermal
tenements in the Hunter Valley in New South Wales
and two in the Cooper Basin, in South Australia.
http://www.geodynamics.com.au/IRM/content/02_hotdryrock/02.3.html
Geothermal temperatures in Victoria
Sub-surface temperatures at 500m
Sub-surface temperature at 500m below ground level
(C°)
The above map shows the temperature below the surface
at 500m depth. This resource assessment was developed
in partnership with Sinclair Knight Merz and Professor
Jim Cull, Monash Geoscope.
Sub-surface temperatures at 1000m
Sub-surface temperature at 1000m below ground level
(C°)
The above map shows the temperature below the surface
at 1000m depth. This resource assessment was developed
in partnership with Sinclair Knight Merz and Professor
Jim Cull, Monash Geoscope.
Sub-surface temperatures at 1500m
Sub-surface temperature at 1500m below ground level
(C°)
The above map shows the temperature below the surface
at 1500m depth. This resource assessment was developed
in partnership with Sinclair Knight Merz and Professor
Jim Cull, Monash Geoscope.
Victoria has limited Hot Dry Rock resources which
are at depths that may currently preclude commercial
energy generation. The hydrothermal property of
geothermal bores in Victoria has potential for geothermal
direct use applications.
Geothermal temperatures in Victoria increase on
average between 3 and 4ºC per 100 metres from the
surface. Whilst Australia has great potential for
developments in the use of Hot Dry Rocks for energy
generation, Victoria has limited Hot Dry Rock resources.
The feature of the geothermal systems in Victoria
of most interest is the highly productive aquifers
in the unconsolidated basin sediments at depths
of up to 1000 metres.
These aquifers provide uniformly high productive
geothermal bores.
Applications that take advantage of the geothermal
resources in Victoria can be found in the form of
geothermal heat pumps, space heating and district
heating, bathing and swimming pool heating, aquaculture
pond heating, greenhouse heating, industrial uses,
cooling and air conditioning, and agricultural drying.
http://www.sustainability.vic.gov.au/www/html/2120-geothermal.asp?intSiteID=4
Potential resources of hot dry
rocks in south-west Queensland
Queensland contains large potential
resources of hot dry rocks, particularly in south-west
Queensland beneath the Eromanga Basin. Legislation
to enable these resources to be explored and developed
is expected to be passed in 2004.
http://www.nrm.qld.gov.au/factsheets/pdf/mines/m7.pdf
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