Pedirka and Western Eromanga Basins Energy Resource Assessments The AFER Project has adapted the conventional hydrocarbon play-based exploration workflow, developed by the petroleum industry over several decades, to develop a similar approach for assessing unconventional hydrocarbon resource potential and CO2 geological storage prospectivity. Play-based exploration is a method of building and leveraging an understanding of a basin and its sediment-hosted resources by systematically evaluating a series of play intervals using the best available geological data and models. Each play interval represents a regionally significant reservoir/aquifer for one or more resources (e.g. hydrocarbons, groundwater, CO2 storage intervals) often with an associated seal/aquitard. Various ‘risk elements’ that are essential for a resource to exist can be mapped and qualified with a probability of geological success. These risk elements are then spatially integrated (stacked) to generate common risk segment (CRS) or ‘heat’ maps for each play interval that indicate areas of relatively high prospectivity versus relatively low prospectivity. Geological risk elements are evaluated using post-drill analysis of well control points, and geological maps generated from basin studies. Common risk segment mapping, supported by post-drill analysis, has been undertaken by the AFER Project using the GIS-Pax Player Software, and assigned a geological probability of success (POS) using a ‘split risking’ system that involves assessing: Pg play, which is the POS that the risk element is effective somewhere within the map segment. Australia web service AFER EFTF Exploring for the Future energy resource assessment module Pedirka Basin conventional hydrocarbons CO2 geological storage western Eromanga Basin WFS 2.0.0 None © Commonwealth of Australia (Geoscience Australia) 2025. This material is released under the Creative Commons Attribution 4.0 International Licence. https://creativecommons.org/licenses/by/4.0/legalcode Geoscience Australia Client Services +61 2 6249 9111 GPO Box 378 Canberra ACT 2601 Australia clientservices@ga.gov.au 1.0.0 1.1.0 2.0.0 text/xml; subtype=gml/3.2 none local results hits GML32 GML32+ZIP GML32+GZIP application/gml+xml; version=3.2 GML3 GML3+ZIP GML3+GZIP text/xml; subtype=gml/3.1.1 GML2 GML2+ZIP GML2+GZIP text/xml; subtype=gml/2.1.2 GEOJSON GEOJSON+ZIP GEOJSON+GZIP ESRIGEOJSON ESRIGEOJSON+ZIP ESRIGEOJSON+GZIP KML application/vnd.google-earth.kml xml application/vnd.google-earth.kml+xml KMZ application/vnd.google-earth.kmz SHAPE+ZIP CSV CSV+ZIP CSV+GZIP Geopackage Geopackage+ZIP none local TRUE FALSE FALSE TRUE TRUE FALSE FALSE FALSE TRUE FALSE FALSE FALSE FALSE FALSE PedirkaAndWesternEromangaBasinsEnergyResourceAssessments:PedirkaEromanga_AllConventional_AllPlays_PlayStack PedirkaEromanga AllConventional AllPlays PlayStack 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Pedirka CoalSeamGas AllPlays PlayStack urn:ogc:def:crs:EPSG::4283 133.48182011 -27.95652613 140.21542266 -23.60611554 PedirkaAndWesternEromangaBasinsEnergyResourceAssessments:Pedirka_CoalSeamGas_lowerPurni_PlayStack Pedirka CoalSeamGas lowerPurni PlayStack urn:ogc:def:crs:EPSG::4283 133.48182011 -27.95652613 140.21542266 -23.60611554 PedirkaAndWesternEromangaBasinsEnergyResourceAssessments:Pedirka_CoalSeamGas_upperPurni_PlayStack Pedirka CoalSeamGas upperPurni PlayStack urn:ogc:def:crs:EPSG::4283 133.48182011 -27.95652613 140.21542266 -23.60611554 PedirkaAndWesternEromangaBasinsEnergyResourceAssessments:WestEromanga_ShaleResource_AllPlays_PlayStack WestEromanga ShaleResource AllPlays PlayStack urn:ogc:def:crs:EPSG::4283 133.48182011 -27.95652613 140.21542266 -23.60611554 PedirkaAndWesternEromangaBasinsEnergyResourceAssessments:WestEromanga_ShaleResource_PeeraPeera_PlayStack WestEromanga ShaleResource PeeraPeera PlayStack urn:ogc:def:crs:EPSG::4283 133.48182011 -27.95652613 140.21542266 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