SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2024, Vol. 67 ›› Issue (3): 206-219.DOI: 10.1016/j.cjche.2023.10.014

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Rate-limiting factors in hydrate decomposition through depressurization across various scales: A mini-review

Xian Sun1, Peng Xiao1, Qinfeng Shi2, Lingban Wang1, Zhenbin Xu1, Yuhao Bu1, Xiaohui Wang1, Yifei Sun1, Changyu Sun1, Guangjin Chen1   

  1. 1 State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, China;
    2 Jining University, Jining 273115, China
  • 收稿日期:2023-06-28 修回日期:2023-10-25 出版日期:2024-03-28 发布日期:2024-06-01
  • 通讯作者: Changyu Sun,E-mail address:cysun@cup.edu.cn;Guangjin Chen,E-mail address:gjchen@cup.edu.cn.
  • 基金资助:
    Financial support received from the National Natural Science Foundation of China (22178379) and the National Key Research and Development Program of China (2021YFC2800902) is gratefully acknowledged.

Rate-limiting factors in hydrate decomposition through depressurization across various scales: A mini-review

Xian Sun1, Peng Xiao1, Qinfeng Shi2, Lingban Wang1, Zhenbin Xu1, Yuhao Bu1, Xiaohui Wang1, Yifei Sun1, Changyu Sun1, Guangjin Chen1   

  1. 1 State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, China;
    2 Jining University, Jining 273115, China
  • Received:2023-06-28 Revised:2023-10-25 Online:2024-03-28 Published:2024-06-01
  • Contact: Changyu Sun,E-mail address:cysun@cup.edu.cn;Guangjin Chen,E-mail address:gjchen@cup.edu.cn.
  • Supported by:
    Financial support received from the National Natural Science Foundation of China (22178379) and the National Key Research and Development Program of China (2021YFC2800902) is gratefully acknowledged.

摘要: Natural gas hydrate is an energy resource for methane that has a carbon quantity twice more than all traditional fossil fuels combined. However, their practical application in the field has been limited due to the challenges of long-term preparation, high costs and associated risks. Experimental studies, on the other hand, offer a safe and cost-effective means of exploring the mechanisms of hydrate dissociation and optimizing exploitation conditions. Gas hydrate decomposition is a complicated process along with intrinsic kinetics, mass transfer and heat transfer, which are the influencing factors for hydrate decomposition rate. The identification of the rate-limiting factor for hydrate dissociation during depressurization varies with the scale of the reservoir, making it challenging to extrapolate findings from laboratory experiments to the actual exploitation. This review aims to summarize current knowledge of investigations on hydrate decomposition on the subject of the research scale (core scale, middle scale, large scale and field tests) and to analyze determining factors for decomposition rate, considering the various research scales and their associated influencing factors.

关键词: Gas hydrate, Rate-limiting factors, Research scale, Depressurization, Decomposition

Abstract: Natural gas hydrate is an energy resource for methane that has a carbon quantity twice more than all traditional fossil fuels combined. However, their practical application in the field has been limited due to the challenges of long-term preparation, high costs and associated risks. Experimental studies, on the other hand, offer a safe and cost-effective means of exploring the mechanisms of hydrate dissociation and optimizing exploitation conditions. Gas hydrate decomposition is a complicated process along with intrinsic kinetics, mass transfer and heat transfer, which are the influencing factors for hydrate decomposition rate. The identification of the rate-limiting factor for hydrate dissociation during depressurization varies with the scale of the reservoir, making it challenging to extrapolate findings from laboratory experiments to the actual exploitation. This review aims to summarize current knowledge of investigations on hydrate decomposition on the subject of the research scale (core scale, middle scale, large scale and field tests) and to analyze determining factors for decomposition rate, considering the various research scales and their associated influencing factors.

Key words: Gas hydrate, Rate-limiting factors, Research scale, Depressurization, Decomposition