Comparative Study on Numerical Simulation of CH4 Breakthrough Pressure in Unsaturated Rock Based on Step-By-Step Method and Continuous Injection Method
文献类型：期刊论文
| 作者 | Zhao, Jiaqi3; Li, Yi2,3; Li, Qi2 ; Ban, Wentao1; Yu, Qingchun1
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| 刊名 | GREENHOUSE GASES-SCIENCE AND TECHNOLOGY
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| 出版日期 | 2025-03-17 |
| 页码 | 19 |
| 关键词 | CH4 breakthrough pressure | continuous injection method | predictive model | step-by-step method |
| ISSN号 | 2152-3878 |
| DOI | 10.1002/ghg.2335 |
| 英文摘要 | Gas breakthrough pressure is a key parameter affecting gas production and evaluation of tight reservoir sealing capabilities. This study aims to explore the impact of different injection methods on CH4 breakthrough pressure in unsaturated rocks. COMSOL Multiphysics was used to simulate the CH4 breakthrough process, and comparative analysis was conducted using step-by-step and continuous injection methods. The results show that the step-by-step method has higher measurement accuracy under low CH4 breakthrough pressure and is suitable for scenarios that require precise evaluation, whereas the continuous injection method is more efficient under high CH4 breakthrough pressure and is suitable for rapid evaluation needs. According to outcomes of simulation, this research suggested a numerical optimization framework aimed at forecasting the breakthrough pressure of CH4 and verified the accuracy and applicability of the model through linear fitting of experimental data and predicted values. In addition, the study also conducted a sensitivity analysis on the pore distribution index (m) and injection flow rate (uin) in the van Genuchten model. The results show that uin has a small impact on breakthrough pressure, whereas m has a considerable effect on breakthrough pressure. An increase in m leads to an increase in breakthrough pressure, thereby enhancing the sealing performance of rock core. This study reveals the applicability difference between the step-by-step method and the continuous injection method in predicting CH4 breakthrough pressure and proposes an effective prediction method based on numerical simulation, which provides valuable insights for selecting gas injection methods and predicting breakthrough pressure in rocks. (c) 2025 Society of Chemical Industry and John Wiley & Sons, Ltd. |
| 资助项目 | Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering Safety, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences ; National Natural Science Foundation of China[41702251] ; MOE Key Laboratory of Groundwater Circulation and Environmental Evolution[2021-003] ; [SKLGME021010] |
| WOS研究方向 | Energy & Fuels ; Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001445768200001 |
| 出版者 | WILEY PERIODICALS, INC |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/36517]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Li, Yi |
| 作者单位 | 1.China Univ Geosci Beijing, Sch Water Resources & Environm, MOE Key Lab Groundwater Circulat & Environm Evolut, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn Safety, Wuhan, Peoples R China 3.Tianjin Univ, Sch Civil Engn, Key Lab Coast Civil Struct Safety, Minist Educ, Tianjin, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Jiaqi,Li, Yi,Li, Qi,et al. Comparative Study on Numerical Simulation of CH4 Breakthrough Pressure in Unsaturated Rock Based on Step-By-Step Method and Continuous Injection Method[J]. GREENHOUSE GASES-SCIENCE AND TECHNOLOGY,2025:19. |
| APA | Zhao, Jiaqi,Li, Yi,Li, Qi,Ban, Wentao,&Yu, Qingchun.(2025).Comparative Study on Numerical Simulation of CH4 Breakthrough Pressure in Unsaturated Rock Based on Step-By-Step Method and Continuous Injection Method.GREENHOUSE GASES-SCIENCE AND TECHNOLOGY,19. |
| MLA | Zhao, Jiaqi,et al."Comparative Study on Numerical Simulation of CH4 Breakthrough Pressure in Unsaturated Rock Based on Step-By-Step Method and Continuous Injection Method".GREENHOUSE GASES-SCIENCE AND TECHNOLOGY (2025):19. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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