Influence of shale-total organic content on CO2 geo-storage potential

©2017. American Geophysical Union. All Rights Reserved. Shale CO 2 wettability is a key factor which determines the structural trapping capacity of a caprock. However, the influence of shale-total organic content (TOC) on wettability (and thus on storage potential) has not been evaluated despite the...

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Main Authors: Arif, Muhammad, Lebedev, Maxim, Barifcani, Ahmed, Iglauer, Stefan
Format: Journal Article
Published: American Geophysical Union 2017
Online Access:http://hdl.handle.net/20.500.11937/62981
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author Arif, Muhammad
Lebedev, Maxim
Barifcani, Ahmed
Iglauer, Stefan
author_facet Arif, Muhammad
Lebedev, Maxim
Barifcani, Ahmed
Iglauer, Stefan
author_sort Arif, Muhammad
building Curtin Institutional Repository
collection Online Access
description ©2017. American Geophysical Union. All Rights Reserved. Shale CO 2 wettability is a key factor which determines the structural trapping capacity of a caprock. However, the influence of shale-total organic content (TOC) on wettability (and thus on storage potential) has not been evaluated despite the fact that naturally occurring shale formations can vary dramatically in TOC, and that even minute TOC strongly affects storage capacities and containment security. Thus, there is a serious lack of understanding in terms of how shale, with varying organic content, performs in a CO 2 geo-storage context. We demonstrate here that CO 2 -wettability scales with shale-TOC at storage conditions, and we propose that if TOC is low, shale is suitable as a caprock in conventional structural trapping scenarios, while if TOC is ultrahigh to medium, the shale itself is suitable as a storage medium (via adsorption trapping after CO 2 injection through fractured horizontal wells).
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spelling curtin-20.500.11937-629812018-04-05T04:13:11Z Influence of shale-total organic content on CO2 geo-storage potential Arif, Muhammad Lebedev, Maxim Barifcani, Ahmed Iglauer, Stefan ©2017. American Geophysical Union. All Rights Reserved. Shale CO 2 wettability is a key factor which determines the structural trapping capacity of a caprock. However, the influence of shale-total organic content (TOC) on wettability (and thus on storage potential) has not been evaluated despite the fact that naturally occurring shale formations can vary dramatically in TOC, and that even minute TOC strongly affects storage capacities and containment security. Thus, there is a serious lack of understanding in terms of how shale, with varying organic content, performs in a CO 2 geo-storage context. We demonstrate here that CO 2 -wettability scales with shale-TOC at storage conditions, and we propose that if TOC is low, shale is suitable as a caprock in conventional structural trapping scenarios, while if TOC is ultrahigh to medium, the shale itself is suitable as a storage medium (via adsorption trapping after CO 2 injection through fractured horizontal wells). 2017 Journal Article http://hdl.handle.net/20.500.11937/62981 10.1002/2017GL073532 American Geophysical Union fulltext
spellingShingle Arif, Muhammad
Lebedev, Maxim
Barifcani, Ahmed
Iglauer, Stefan
Influence of shale-total organic content on CO2 geo-storage potential
title Influence of shale-total organic content on CO2 geo-storage potential
title_full Influence of shale-total organic content on CO2 geo-storage potential
title_fullStr Influence of shale-total organic content on CO2 geo-storage potential
title_full_unstemmed Influence of shale-total organic content on CO2 geo-storage potential
title_short Influence of shale-total organic content on CO2 geo-storage potential
title_sort influence of shale-total organic content on co2 geo-storage potential
url http://hdl.handle.net/20.500.11937/62981