Experimental study on the flow characteristics of supercritical CO 2 in reservoir sandstones from the Ordos Basin, China
Abstract Understanding the flow characteristics of supercritical CO 2 in dry sandstones or those with low water content provides crucial information on the flow behavior in near‐wellbore zone. We conducted supercritical CO 2 core flooding experiments using sandstone cores extracted from potential CO...
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crwiley:10.1002/ghg.2246 2024-06-02T08:05:13+00:00 Experimental study on the flow characteristics of supercritical CO 2 in reservoir sandstones from the Ordos Basin, China Zhu, Qianlin Chen, Dongbao Lu, Shijian Jiang, Shaojin National Natural Science Foundation of China 2023 http://dx.doi.org/10.1002/ghg.2246 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ghg.2246 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Greenhouse Gases: Science and Technology volume 14, issue 1, page 197-208 ISSN 2152-3878 2152-3878 journal-article 2023 crwiley https://doi.org/10.1002/ghg.2246 2024-05-03T10:51:03Z Abstract Understanding the flow characteristics of supercritical CO 2 in dry sandstones or those with low water content provides crucial information on the flow behavior in near‐wellbore zone. We conducted supercritical CO 2 core flooding experiments using sandstone cores extracted from potential CO 2 reservoirs in the Ordos Basin, China. During the experiments, we reduced the water content of saturated cores by flushing with dry CO 2 and subsequently vacuumizing them at a temperature of 35°C to simulate sandstones with low water content. The experimental results demonstrate that the CO 2 permeability was initially high during the low differential pressure stage and remained constant as the differential pressure increased. In the carbonic acid solution injection experiment, we observed an increase in the flow rate of the solution with the continuous interaction in the cores from the Shanxi and Shihezi groups, while the Yanchang group exhibited the opposite effect. This increase in permeability can be attributed to mineral dissolution and the loss of fine particles. Conversely, the blockage of fine particles or the precipitation of dissolved minerals may lead to a decrease in permeability. After the CO 2 –water–rock interaction, the CO 2 permeability decreased compared to before the interaction, indicating that adsorbed water, the precipitation of dissolved mineral, or pore throat blockage by fine particles could induce this permeability decrease. The impact of adsorbed water on the decrease in CO 2 permeability is significant. Additionally, the CO 2 –water–rock interaction caused corrosion on the anorthite surface. Furthermore, calcite dispersed in connected pores displayed a more pronounced dissolution compared to cemented calcite. © 2023 Society of Chemical Industry and John Wiley & Sons, Ltd. Article in Journal/Newspaper Carbonic acid Wiley Online Library Greenhouse Gases: Science and Technology 14 1 197 208 |
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Abstract Understanding the flow characteristics of supercritical CO 2 in dry sandstones or those with low water content provides crucial information on the flow behavior in near‐wellbore zone. We conducted supercritical CO 2 core flooding experiments using sandstone cores extracted from potential CO 2 reservoirs in the Ordos Basin, China. During the experiments, we reduced the water content of saturated cores by flushing with dry CO 2 and subsequently vacuumizing them at a temperature of 35°C to simulate sandstones with low water content. The experimental results demonstrate that the CO 2 permeability was initially high during the low differential pressure stage and remained constant as the differential pressure increased. In the carbonic acid solution injection experiment, we observed an increase in the flow rate of the solution with the continuous interaction in the cores from the Shanxi and Shihezi groups, while the Yanchang group exhibited the opposite effect. This increase in permeability can be attributed to mineral dissolution and the loss of fine particles. Conversely, the blockage of fine particles or the precipitation of dissolved minerals may lead to a decrease in permeability. After the CO 2 –water–rock interaction, the CO 2 permeability decreased compared to before the interaction, indicating that adsorbed water, the precipitation of dissolved mineral, or pore throat blockage by fine particles could induce this permeability decrease. The impact of adsorbed water on the decrease in CO 2 permeability is significant. Additionally, the CO 2 –water–rock interaction caused corrosion on the anorthite surface. Furthermore, calcite dispersed in connected pores displayed a more pronounced dissolution compared to cemented calcite. © 2023 Society of Chemical Industry and John Wiley & Sons, Ltd. |
author2 |
National Natural Science Foundation of China |
format |
Article in Journal/Newspaper |
author |
Zhu, Qianlin Chen, Dongbao Lu, Shijian Jiang, Shaojin |
spellingShingle |
Zhu, Qianlin Chen, Dongbao Lu, Shijian Jiang, Shaojin Experimental study on the flow characteristics of supercritical CO 2 in reservoir sandstones from the Ordos Basin, China |
author_facet |
Zhu, Qianlin Chen, Dongbao Lu, Shijian Jiang, Shaojin |
author_sort |
Zhu, Qianlin |
title |
Experimental study on the flow characteristics of supercritical CO 2 in reservoir sandstones from the Ordos Basin, China |
title_short |
Experimental study on the flow characteristics of supercritical CO 2 in reservoir sandstones from the Ordos Basin, China |
title_full |
Experimental study on the flow characteristics of supercritical CO 2 in reservoir sandstones from the Ordos Basin, China |
title_fullStr |
Experimental study on the flow characteristics of supercritical CO 2 in reservoir sandstones from the Ordos Basin, China |
title_full_unstemmed |
Experimental study on the flow characteristics of supercritical CO 2 in reservoir sandstones from the Ordos Basin, China |
title_sort |
experimental study on the flow characteristics of supercritical co 2 in reservoir sandstones from the ordos basin, china |
publisher |
Wiley |
publishDate |
2023 |
url |
http://dx.doi.org/10.1002/ghg.2246 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ghg.2246 |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_source |
Greenhouse Gases: Science and Technology volume 14, issue 1, page 197-208 ISSN 2152-3878 2152-3878 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ghg.2246 |
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Greenhouse Gases: Science and Technology |
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14 |
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