Correlation of the Early Permian Poole Sandstone and Noonkanbah Formation, Canning Basin, Western Australia and Implications for CO2 Sequestration PDF Download
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Author: Louisa Michelle Dent
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Category :
Languages : en
Pages :
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Author: Louisa Michelle Dent
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Category :
Languages : en
Pages :
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Author: Mike Dentith
Publisher:
ISBN: 9781741685794
Category : Canning Basin (W.A.)
Languages : en
Pages :
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Author: David John Forman
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ISBN:
Category : Science
Languages : en
Pages : 104
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Author: Alanna Simpson
Publisher:
ISBN: 9781921236983
Category : Browse Basin (W.A.)
Languages : en
Pages : 51
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Author: Australia. Bureau of Mineral Resources, Geology and Geophysics
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Category : Geology
Languages : en
Pages :
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Author: George Anthony Thomas
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ISBN:
Category : Geology, Stratigraphic
Languages : en
Pages : 5
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Author: Catherine M Gibson-Poole
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ISBN:
Category : Carbon dioxide mitigation
Languages : en
Pages : 500
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Release of anthropogenic greenhouse gas emissions to the atmosphere is a concern for global warming. Thus, practical and economic solutions are being sought to combat this problem. One possible methodology for reducing emissions is the geological storage of carbon dioxide (CO2). The subsurface behaviour of CO2 is influenced by many variables; therefore, accurate appraisal of a potential CO2 storage site requires detailed site characterisation. In particular, potential sites need to be evaluated geologically in terms of their injectivity, containment and capacity. Detailed site characterisation was undertaken for two possible sites for geological storage of CO2, located offshore northwest Australia in the Petrel and Barrow sub-basins. The injection targets in the Petrel Sub-basin are the Jurassic Plover and Elang formations, locally sealed by the Frigate Formation, and the overlying Cretaceous Sandpiper Sandstone, regionally sealed by the Bathurst Island Group. The Plover/Elang formations are laterally extensive, fluvio-deltaic sandstones of fair to good reservoir quality, with likely excellent lateral and vertical connectivity. The Frigate Formation may not be an effective seal up-dip, but the overlying secondary reservoir (Sandpiper Sandstone) and thick regional seal (Bathurst Island Group) will ensure continued CO2 containment. The Jurassic-Cretaceous post-rift sediments are structurally simple and dip gently up towards the basin margins with no defined structural closures. Therefore, hydrodynamic, residual and solubility trapping beneath the regional seal will be the dominant storage mechanisms. The potential storage capacity is vast (> 10,000 Mt), highlighting why deep saline formations may provide a realistic solution to large-scale greenhouse gas emissions reduction. In the Barrow Sub-basin, the Cretaceous Flag Sandstone is the injection target, sealed by the Muderong Shale. The reservoir units are laterally extensive, amalgamated, basin floor fan sandstones with excellent reservoir quality. Hemipelagic shale drapes may locally restrict the vertical connectivity. The Muderong Shale has excellent seal capacity, with the potential to withhold a CO2 column height of 565-790 m. The structural geometry is a large anticline and the trapping mechanisms are likely to a combination of stratigraphic, residual and solubility trapping along the axis of the anticline, as well as structural trapping within the anticlinal closure. A few large faults exist which could potentially be reactivated if injection pressures are not appropriately managed. The hydrodynamic flow has been altered by production induced pressure decline; however, the impact on the CO2 migration pathway is likely to be insignificant due to the stronger buoyancy drive. The detailed geological characterisation process identified that both sites are suitable candidates for geological storage of CO2. Geological storage of CO2 is technically feasible in a variety of different geological settings, as demonstrated by studies like these and CO2 storage projects already in operation. Key to the success of a CO2 storage project is an understanding of the stratigraphic architecture and reservoir heterogeneity. This will allow an optimal injection strategy to be devised to utilise the inherent geological characteristics of the site and maximise the benefits of injectivity, capacity and containment for efficient geological storage of CO2.
Author:
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ISBN: 9780642059888
Category : Canning Basin (W.A.)
Languages : en
Pages : 91
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Author: D. S. Broad
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ISBN:
Category : Geology
Languages : en
Pages :
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Author: Curt Teichert
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ISBN:
Category : Geology
Languages : en
Pages : 3
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