Authors / CoAuthors
Sayers, J. | Marsh, C. | Scott, A. | Cinar, Y. | Bradshaw, J.
Abstract
Australia's coal-based power-stations produce about 70% of its energy needs and consequently have led, to the adoption of a multi-disciplinary approach to instigating low emission technologies, which include CO2 capture, injection and storage. The onshore Bowen Basin could provide potential multi-scale storage site projects. Storage potential was demonstrated within a 256 square kilometer area on the eastern flank of the 60-km by 20-km Wunger Ridge using a regional model pertaining to a potential commercial-scale 200 megawatt power-station with emission/injection rates of 1.2 million ton/year. Palaeogeography interpretations of the targeted reservoir indicate a dominantly meandering channel system with permeabilities of up to 1 darcy on the ridge's eastern flank, waning to a deltaic system downdip. Seismic interpretation indicates a relatively unfaulted reservoir-to-seal section on the flank with low-relief structures. Depth to reservoir ranges from 2100 to 2700-m. Simulation from a simplified 3-D block model indicates at least two vertical wells are needed to inject at 1.2 million ton/year in permeabilities of 1 darcy, and reservoir thicknesses of about 5-m. The presence of intra-reservoir baffles reduces the injection rate possible, with a subsequent increase in the number of wells required to maintain the project injection rate, also true for a low-permeability trapping scenario. Long-term storage of acceptable volumes would involve intra-reservoir baffle, stratigraphic, residual, and potentially depleted field trapping scenarios along a 10 to 15-km migration route. Trapping success is ultimately a function of optimal reservoir characteristics both estimated from more complex modeling and, ultimately, collection of infill seismic and new wells.
Product Type
nonGeographicDataset
eCat Id
63691
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Custodian
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
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Keywords
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- External PublicationScientific Journal Paper
- ( Theme )
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- CO2 capture
- ( Theme )
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- GEODISC
- ( Theme )
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- carbon dioxide
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- AU-QLD
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
Publication Date
2005-01-01T00:00:00
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geoscientificInformation
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[-28.0, -27.0, 149.0, 150.0]
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