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Towards a natural hydrogen prospectivity map

Presented by Peter Haines, Basins Custodian

Recent amendments to the Petroleum and Geothermal Energy
Resources Act 1967 will facilitate future exploration for subsurface natural hydrogen in Western Australia. With appropriate
regulations and growing interest from energy explorers, we
are developing a broad-scale hydrogen prospectivity map
of the State. This map will use a similar approach to the
Mineral Systems Atlas and to the country-scale hydrogen
prospectivity map published by the United States Geological
Survey.

Natural hydrogen sources include, but are not limited
to, water interaction with iron-bearing minerals (including
serpentinisation), radiolysis of water and over maturation of
buried organic matter. While sources may be most prevalent in
crystalline basement rocks, overlying basins may offer the best
opportunity for economic accumulations.

Major crustal boundaries and deep penetrating faults offer
the best conduits to transfer hydrogen from deep sources to
shallow accumulations. Application of our existing and new GIS
datasets will be used to create predictor maps for statewide
natural hydrogen prospectivity. These prospectivity maps will
be available as part of the Energy Systems Atlas on the Western
Australia Petroleum and Geothermal Information Management
System (WAPIMS).

dmpe.wa.gov.au/gswa