CO2-wettability of low to high rank coal seams: Implications for carbon sequestration and enhanced methane recovery
Coal seams offer tremendous potential for carbon geo-sequestration with the dual benefit of enhanced methane recovery. In this context, it is essential to characterize the wettability of the coal–CO2–water system as it significantly impacts CO2 storage capacity and methane recovery efficiency. Techn...
| Main Authors: | , , , |
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| Format: | Journal Article |
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Elsevier Ltd
2016
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| Online Access: | http://hdl.handle.net/20.500.11937/17483 |
| _version_ | 1848749478316605440 |
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| author | Arif, M. Barifcani, Ahmed Lebedev, Maxim Iglauer, Stefan |
| author_facet | Arif, M. Barifcani, Ahmed Lebedev, Maxim Iglauer, Stefan |
| author_sort | Arif, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Coal seams offer tremendous potential for carbon geo-sequestration with the dual benefit of enhanced methane recovery. In this context, it is essential to characterize the wettability of the coal–CO2–water system as it significantly impacts CO2 storage capacity and methane recovery efficiency. Technically, wettability is influenced by reservoir pressure, coal seam temperature, water salinity and coal rank. Thus a comprehensive investigation of the impact of the aforementioned parameters on CO2-wettability is crucial in terms of storage site selection and predicting the injectivity behaviour and associated fluid dynamics. To accomplish this, we measured advancing and receding water contact angles using the pendent drop tilted plate technique for coals of low, medium and high ranks as a function of pressure, temperature and salinity and systematically investigated the associated trends. We found that high rank coals are strongly CO2-wet, medium rank coals are weakly CO2-wet, and low rank coals are intermediate-wet at typical storage conditions. Further, we found that CO2-wettability of coal increased with pressure and salinity and decreased with temperature irrespective of coal rank. We conclude that at a given reservoir pressure, high rank coal seams existing at low temperature are potentially more efficient with respect to CO2-storage and enhanced methane recovery due to increased CO2-wettability and thus increased adsorption trapping. |
| first_indexed | 2025-11-14T07:21:34Z |
| format | Journal Article |
| id | curtin-20.500.11937-17483 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:21:34Z |
| publishDate | 2016 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-174832018-05-22T07:50:58Z CO2-wettability of low to high rank coal seams: Implications for carbon sequestration and enhanced methane recovery Arif, M. Barifcani, Ahmed Lebedev, Maxim Iglauer, Stefan Coal seams offer tremendous potential for carbon geo-sequestration with the dual benefit of enhanced methane recovery. In this context, it is essential to characterize the wettability of the coal–CO2–water system as it significantly impacts CO2 storage capacity and methane recovery efficiency. Technically, wettability is influenced by reservoir pressure, coal seam temperature, water salinity and coal rank. Thus a comprehensive investigation of the impact of the aforementioned parameters on CO2-wettability is crucial in terms of storage site selection and predicting the injectivity behaviour and associated fluid dynamics. To accomplish this, we measured advancing and receding water contact angles using the pendent drop tilted plate technique for coals of low, medium and high ranks as a function of pressure, temperature and salinity and systematically investigated the associated trends. We found that high rank coals are strongly CO2-wet, medium rank coals are weakly CO2-wet, and low rank coals are intermediate-wet at typical storage conditions. Further, we found that CO2-wettability of coal increased with pressure and salinity and decreased with temperature irrespective of coal rank. We conclude that at a given reservoir pressure, high rank coal seams existing at low temperature are potentially more efficient with respect to CO2-storage and enhanced methane recovery due to increased CO2-wettability and thus increased adsorption trapping. 2016 Journal Article http://hdl.handle.net/20.500.11937/17483 10.1016/j.fuel.2016.05.053 Elsevier Ltd fulltext |
| spellingShingle | Arif, M. Barifcani, Ahmed Lebedev, Maxim Iglauer, Stefan CO2-wettability of low to high rank coal seams: Implications for carbon sequestration and enhanced methane recovery |
| title | CO2-wettability of low to high rank coal seams: Implications for carbon sequestration and enhanced methane recovery |
| title_full | CO2-wettability of low to high rank coal seams: Implications for carbon sequestration and enhanced methane recovery |
| title_fullStr | CO2-wettability of low to high rank coal seams: Implications for carbon sequestration and enhanced methane recovery |
| title_full_unstemmed | CO2-wettability of low to high rank coal seams: Implications for carbon sequestration and enhanced methane recovery |
| title_short | CO2-wettability of low to high rank coal seams: Implications for carbon sequestration and enhanced methane recovery |
| title_sort | co2-wettability of low to high rank coal seams: implications for carbon sequestration and enhanced methane recovery |
| url | http://hdl.handle.net/20.500.11937/17483 |