Research progress on influencing factors and strengthening mechanism of CO2-CH4 hydrate replacement in porous media system

被引：0
作者：
Zhang X. [1 ,2 ,3 ]
Zhang S. [1 ,2 ,3 ]
Li P. [1 ,2 ,3 ]
Huang T. [1 ,2 ,3 ]
Yin S. [1 ,2 ,3 ]
Li J. [1 ,2 ,3 ]
Wang Y. [1 ,2 ,4 ]
机构：
[1] School of Energy and Power Engineering, Lanzhou University of Technology, Gansu, Lanzhou
[2] Key Lab of Complementary Energy System of Biomass and Solar Energy Gansu Province, Gansu, Lanzhou
[3] Western China Energy & Environment Research Center, Lanzhou University of Technology, Gansu, Lanzhou
[4] Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Gansu, Lanzhou
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2022年 / 41卷 / 10期
关键词：
CO[!sub]2[!/sub] sequestration; displacement characteristics; gas hydrate; porous media; strengthening mechanism;
D O I：
10.16085/j.issn.1000-6613.2021-2632
中图分类号：
学科分类号：
摘要：
Natural gas hydrate has become one of the most promising clean energy sources in the future due to its huge reserves, clean and pollution-free. CO2 replacement method can realize the safe exploitation of natural gas hydrate and the storage of greenhouse gas. However, the replacement process of CO2-CH4 hydrate in porous media is characterized by long reaction period, slow rate and low efficiency, which has become a bottleneck restricting the efficient exploitation of natural gas hydrate. In this paper, the displacement characteristics of CO2-CH4 hydrate in porous media system are reviewed, and the displacement mechanism and dynamic process of CO2-CH4 hydrate are analyzed. On this basis, the effects of different factors on the efficiency of CO2-CH4 hydrate replacement in porous media and their strengthening mechanisms are described in detail, including thermal stimulation, displacement pressure, small molecule gas and chemical additives. Finally, the shortcomings and future development direction of CO2-CH4 hydrate replacement enhancement technology in porous media system are pointed out. Further research is needed to understand the strengthening mechanism and dynamic mechanism of CO2-CH4 hydrate replacement in porous media. © 2022 Chemical Industry Press. All rights reserved.
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页码：5259 / 5271
页数：12
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