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A Multidisciplinary Resource Assessment of the Adavale Basin Part 1. Conventional and Unconventional Resources
<div>The Adavale Basin underlies the Galilee, Eromanga and Lake Eyre basins in central Queensland and has a sedimentary record spanning the Early Devonian to Late Devonian/Early Carboniferous. A range of depositional environments existed across the Adavale Basin, from dry alluvial plains to restricted marine embayments. The interplay of these environments over time has set up conventional and unconventional hydrocarbon opportunities, including the Gilmore gas discovery.
Hydrocarbon and other resource opportunities in the Adavale Basin are a focus of the Australian Government’s Trusted Environmental and Geological Information (TEGI) scientific program. Geoscience Australia (GA) is collaborating with CSIRO to understand areas of future resource potential and provide transparent, trusted baseline data and information to support resource development and better environmental outcomes. </div><div>Seven play intervals are assessed for resource potential in the Adavale Basin. From oldest to youngest, these are the Gumbardo, Eastwood, Log Creek, Lissoy, Cooladdi, Etonvale, and Buckabie sequences, representing distinct palynology-defined chronostratigraphic intervals.
A systematic and consistent assessment used the existing thirty-nine petroleum exploration wells and supplemented with sequence stratigraphic data were analysed in the ArcGIS ‘Player’ extension. We identified twenty-five play elements, such as reservoir, seal and charge, and the gross depositional environment interpreted for each play. Well-point maps were used to identify spatial variation in risk for each play element occurring using a split-risking methodology that represented play chance and repeatability.
Implicitly, the methodology is data-driven, rather than model-driven, and areas of sparse data results in considerable uncertainty across each play element. The reliance on well information is driven by the sparsity of seismic data across the Adavale Basin.
Risk maps for each play were generated to indicate qualitative prospectivity of the Adavale Basin. Composite common risk segment maps of the conventional hydrocarbon prospectivity outline the proven play area around the Gilmore and Log Creek gas accumulations and indicate potential for future discoveries. Two zones of unconventional hydrocarbon play potential have been identified, one around the Gilmore area extending to the northeast and the other further north, centred over the Swaylands-1 exploration well.
With further geological, geophysical and environmental information, our methodology and initial results can be used as a tool to assist policy makers to guide and prioritise areas for energy exploration, especially in identifying hydrocarbon and carbon capture and storage opportunities in the Adavale Basin.
This Abstract was submitted/presented to the 2022 Central Australian Basins Symposium IV 29-30 August ( https://agentur.eventsair.com/cabsiv/).
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Identification info
- Date (Creation)
- 2023-03-04T16:00:00
- Date (Publication)
- 2024-12-15T21:53:40
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/147642
- Cited responsible party
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Role Organisation / Individual Name Details Publisher Commonwealth of Australia (Geoscience Australia)
Voice Author Darren Ferdinando
External Contact Author Wainman, C.
Internal Contact Author Jorgensen, D.
Internal Contact Author Orr, M.
Internal Contact Author McAlpine, S.
Internal Contact Author Hostetler, S.
Internal Contact Author Gouramanis, C.
Internal Contact Author Bouma, M.
External Contact Author Woods, M.
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Central Australian Basins Symposium (CABS) IV 29-30 December 2022 Darwin NT
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Paper submitted to CABS
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- Completed
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Role Organisation / Individual Name Details Resource provider Minerals, Energy and Groundwater Division
External Contact Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Point of contact McAlpine, S.
MEG Internal Contact
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- Geoscientific information
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Product data repository: Various Formats
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Trusted Environmental and Geological Information
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Adavale Basin
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Resource Assessment
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Conventional Resources
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Unconventional Resources
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- theme.ANZRC Fields of Research.rdf
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Resource geoscience
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4.0
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© Commonwealth of Australia (Geoscience Australia) 2022
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Australian Government Security Classification System
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- 2018-11-01T00:00:00
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Australian Government Security Classification System
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- English
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- UTF8
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<div>This document was created in Microsoft Word</div>
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Australian Government Security Classification System
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- 2018-11-01T00:00:00
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Geoscience Australia - short identifier for metadata record with
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- Date info (Creation)
- 2024-12-15T21:32:01
- Date info (Revision)
- 2024-12-15T21:32:01
Metadata standard
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AU/NZS ISO 19115-1:2014
Metadata standard
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ISO 19115-1:2014
Metadata standard
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ISO 19115-3
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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
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Version 2.0, September 2018
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