Research progress and application of molecular simulation technology in phase transition mechanism of natural gas hydrate

被引：0
|
作者：
Sun J. [1 ,2 ]
Liao B. [1 ]
Wang J. [1 ,3 ]
Lü K. [1 ]
Wang Y. [4 ]
Wang R. [2 ]
Bai Y. [1 ]
Jiang H. [1 ]
Shao Z. [1 ]
机构：
[1] School of Petroleum Engineering, China University of Petroleum(East China), Qingdao
[2] CNPC Engineering Technology R&D Company Limited, Beijing
[3] Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou), Guangzhou
[4] School of Science, China University of Petroleum(East China), Qingdao
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2022年 / 53卷 / 03期
关键词：
Exploitation method; Gas hydrate; Inhibitor; Molecular simulation; Phase transition mechanism;
D O I：
10.11817/j.issn.1672-7207.2022.03.001
中图分类号：
学科分类号：
摘要：
Molecular simulation has been applied to study the mechanism of hydrate phase transition for many years. It has revealed the mechanism of inhibitors during hydrate nucleation and generation successfully, which also plays an essential role in developing hydrate inhibitors and hydrate extraction technologies. The progress of molecular simulation techniques in the phase-change mechanism of natural gas hydrate from nucleation and decomposition was presented, focusing on the unstable cluster nucleation hypothesis, the local nucleation hypothesis and the "blob" nucleation hypothesis. The application of molecular simulation in the development of natural gas hydrate formation and decomposition inhibitors and the interaction mechanism between solid material surface and hydrate were described. At the same time, the application of molecular simulation in natural gas hydrate production methods such as carbon dioxide displacement method, electric field enhancement method and chemical injection method was discussed. A natural gas hydrate joint production method combining carbon dioxide displacement method and electric field enhancement production technology was proposed. Finally, the scientific problems such as cross-scale technology and force field development of molecular simulation in hydrate drilling and production were summarized. The further application of molecular simulation technology to assist in the development of high-performance hydrate drilling and completion of working fluid treatments and the establishment of efficient extraction methods applicable to hydrate reservoirs was expected. © 2022, Central South University Press. All right reserved.
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页码：757 / 771
页数：14
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