Understanding potential resource prospectivity 1D burial and thermal history modelling of the Adavale Basin
<div>Lateral variation in maturity of potential Devonian source rocks in the Adavale Basin have been investigated using nine 1D burial thermal and petroleum generation history models, constructed using existing open file data. These models provide an estimate of the hydrocarbon generation potential of the basin. Total organic carbon (TOC) content and pyrolysis data indicate that the Log Creek Formation, Bury Limestone and shale units of the Buckabie Formation have the most potential as source rocks. The Log Creek Formation and the Bury Limestone are the most likely targets for unconventional gas exploration.</div><div> </div><div>The models were constructed used geological information from well completion reports to assign formation tops and stratigraphic ages to then forward-model the evolution of geophysical parameters. The rock parameters, including facies, temperature, organic geochemistry/petrology, were used to investigate source rock quality, maturity and kerogen type. Suitable boundary conditions were assigned for paleo-heat flow, paleo-surface temperature and paleo-water depth. The resulting models were calibrated using bottom hole temperature and measured vitrinite reflectance data.</div><div> </div><div>The results correspond relatively well with published heat flow predictions, however a few wells show possible localised heat effects that differ from the overall basin average. The models indicate full maturation of the Devonian source rocks with generation occurring during the Carboniferous and again during the Late Cretaceous. Any potential accumulations may be trapped in Devonian sandstone, limestone and mudstone units, as well as overlying younger sediments of the Mesozoic Eromanga Basin. Accumulations could be trapped by localised deposits of the Cooladdi Dolomite and other marine, terrestrial clastic and evaporite units around the basin. Migration of the expelled hydrocarbons may be restricted by overlying regional seals, such as the Wallumbilla Formation of the Eromanga Basin. Unconventional hydrocarbons are a likely target for the Adavale Basin with potential either for tight or shale gas in favourable areas from the Log Creek Formation and Bury Limestone.</div>
This Abstract was submitted/presented to the 2023 Australian Exploration Geoscience Conference 13-18 Mar ( https://2023.aegc.com.au/)
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- 2022-11-15T20:00:00
- Date (Publication)
- 2023-07-25T05:32:20
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Role Organisation / Individual Name Details Publisher Commonwealth of Australia (Geoscience Australia)
Voice Author Palu, T.
Internal Contact Author Russell Korsch
External Contact Author Khider, K.
Internal Contact Author Boreham, C.
Internal Contact Author Edwards, D.
Internal Contact Author Bailey, A.
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Australasian Exploration Geoscience Conference 13-18 March 2023 Brisbane Qld
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Australian Exploration Geoscience Conference (AEGC) 2023 Extended Abstract
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Role Organisation / Individual Name Details Resource provider Minerals, Energy and Groundwater Division
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Adavale Basin
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Basin Inventory
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Adavale Basin
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petroleum systems modelling
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Devonian
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burial history
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thermal history
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Resource geoscience
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© Commonwealth of Australia (Geoscience) 2022
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Australian Government Security Classification System
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Australian Government Security Classification System
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Link to Dropbox (full-paper_40.pdf)
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<div>Presentation of work undertaken as part of the Basin Inventory module of the EFTF Program.</div>
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Australian Government Security Classification System
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
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Conference Abstract
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- 2023-07-19T06:02:45
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AU/NZS ISO 19115-1:2014
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ISO 19115-1:2014
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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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