The Influencing Factors of CO<sub>2</sub> Utilization and Storage Efficiency in Gas Reservoir
Carbon Capture, Utilization and Storage (CCUS) technology is one of the most practical means to meet zero greenhouse gas emission goal of the Paris Agreement and to ensure profitability, which could achieve permanent sequestration of CO<sub>2</sub>. Due to the cost constraints of CCUS im...
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MDPI AG
2023-03-01
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| Online Access: | https://www.mdpi.com/2076-3417/13/6/3419 |
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| author | Yulong Luo Jiazheng Qin Jianqin Cai Yong Tang |
| author_facet | Yulong Luo Jiazheng Qin Jianqin Cai Yong Tang |
| author_sort | Yulong Luo |
| collection | DOAJ |
| description | Carbon Capture, Utilization and Storage (CCUS) technology is one of the most practical means to meet zero greenhouse gas emission goal of the Paris Agreement and to ensure profitability, which could achieve permanent sequestration of CO<sub>2</sub>. Due to the cost constraints of CCUS implementation, improving recovery and maximizing storage efficiency have become a critical part of ensuring economic efficiency. This research aims to analyze the effects of key factors on enhancing gas recovery and storage efficiency, combined with the validation of CO<sub>2</sub> displacement and storage mechanisms. Therefore, long core experiments and different dimensional simulations were established based on R gas reservoir (one of the actual gas reservoirs in Northeast China), which were designed for sensitivity analyses of different influencing parameters and quantitative analyses of different storage mechanisms during CCUS process. When the conditions (temperature and pressure) were closer to the CO<sub>2</sub> critical point, when the following parameters (the CO<sub>2</sub> purity, the injection rate and the dip angle) became larger, when the reservoir rhythm was reversed and when the irreducible water was is in existence, the final displacement and storage effects became better because of weaker diffusion, stronger gravity segregation and slower CO<sub>2</sub> breakthrough. The contributions of different storage mechanisms were quantified: 83.78% CO<sub>2</sub> existed as supercritical fluid; 12.67% CO<sub>2</sub> was dissolved in brine; and 3.85% CO<sub>2</sub> reacted with minerals. Some supercritical and dissolved CO<sub>2</sub> would slowly transform to solid precipitation over time. This work could provide theoretical supports for CCUS technology research and references for CCUS field application. At the same time, countries should further improve CCUS subsidy policies and make concerted efforts to promote the globalization and commercialization of CO<sub>2</sub> transport. |
| first_indexed | 2024-03-11T06:59:14Z |
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| language | English |
| last_indexed | 2024-03-11T06:59:14Z |
| publishDate | 2023-03-01 |
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| series | Applied Sciences |
| spelling | doaj.art-17b63cb163b94c6e9bdaee8f065f4cd92023-11-17T09:21:25ZengMDPI AGApplied Sciences2076-34172023-03-01136341910.3390/app13063419The Influencing Factors of CO<sub>2</sub> Utilization and Storage Efficiency in Gas ReservoirYulong Luo0Jiazheng Qin1Jianqin Cai2Yong Tang3State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, ChinaState Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, ChinaDagang Zhaodong Operation Branch, PetroChina Company Limited, Tianjin 300457, ChinaState Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, ChinaCarbon Capture, Utilization and Storage (CCUS) technology is one of the most practical means to meet zero greenhouse gas emission goal of the Paris Agreement and to ensure profitability, which could achieve permanent sequestration of CO<sub>2</sub>. Due to the cost constraints of CCUS implementation, improving recovery and maximizing storage efficiency have become a critical part of ensuring economic efficiency. This research aims to analyze the effects of key factors on enhancing gas recovery and storage efficiency, combined with the validation of CO<sub>2</sub> displacement and storage mechanisms. Therefore, long core experiments and different dimensional simulations were established based on R gas reservoir (one of the actual gas reservoirs in Northeast China), which were designed for sensitivity analyses of different influencing parameters and quantitative analyses of different storage mechanisms during CCUS process. When the conditions (temperature and pressure) were closer to the CO<sub>2</sub> critical point, when the following parameters (the CO<sub>2</sub> purity, the injection rate and the dip angle) became larger, when the reservoir rhythm was reversed and when the irreducible water was is in existence, the final displacement and storage effects became better because of weaker diffusion, stronger gravity segregation and slower CO<sub>2</sub> breakthrough. The contributions of different storage mechanisms were quantified: 83.78% CO<sub>2</sub> existed as supercritical fluid; 12.67% CO<sub>2</sub> was dissolved in brine; and 3.85% CO<sub>2</sub> reacted with minerals. Some supercritical and dissolved CO<sub>2</sub> would slowly transform to solid precipitation over time. This work could provide theoretical supports for CCUS technology research and references for CCUS field application. At the same time, countries should further improve CCUS subsidy policies and make concerted efforts to promote the globalization and commercialization of CO<sub>2</sub> transport.https://www.mdpi.com/2076-3417/13/6/3419CO<sub>2</sub> utilizationCO<sub>2</sub> storagelong-core experimentnumerical simulationgas recovery |
| spellingShingle | Yulong Luo Jiazheng Qin Jianqin Cai Yong Tang The Influencing Factors of CO<sub>2</sub> Utilization and Storage Efficiency in Gas Reservoir Applied Sciences CO<sub>2</sub> utilization CO<sub>2</sub> storage long-core experiment numerical simulation gas recovery |
| title | The Influencing Factors of CO<sub>2</sub> Utilization and Storage Efficiency in Gas Reservoir |
| title_full | The Influencing Factors of CO<sub>2</sub> Utilization and Storage Efficiency in Gas Reservoir |
| title_fullStr | The Influencing Factors of CO<sub>2</sub> Utilization and Storage Efficiency in Gas Reservoir |
| title_full_unstemmed | The Influencing Factors of CO<sub>2</sub> Utilization and Storage Efficiency in Gas Reservoir |
| title_short | The Influencing Factors of CO<sub>2</sub> Utilization and Storage Efficiency in Gas Reservoir |
| title_sort | influencing factors of co sub 2 sub utilization and storage efficiency in gas reservoir |
| topic | CO<sub>2</sub> utilization CO<sub>2</sub> storage long-core experiment numerical simulation gas recovery |
| url | https://www.mdpi.com/2076-3417/13/6/3419 |
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