In situ observation of gas hydrates growth hosted in porous media

被引：32
|
作者：
Zhao, Jiafei [1 ]
Yang, Lei [1 ]
Xue, Kaihua [1 ]
Lam, Weihaur [2 ]
Li, Yanghui [1 ]
Song, Yongchen [1 ]
机构：
[1] Dalian Univ Technol, Minist Educ, Key Lab Ocean Energy Utilizat & Energy Convers, Dalian 116024, Peoples R China
[2] Univ Malaya, Fac Engn, Dept Civil Engn, Kuala Lumpur 50603, Malaysia
来源：
CHEMICAL PHYSICS LETTERS | 2014年 / 612卷
基金：
国家高技术研究发展计划(863计划);
关键词：
METHANE; SAND;
D O I：
10.1016/j.cplett.2014.07.066
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Gas hydrates can be free floating in the sediment matrix; contacting, but do not cement; actually cementing and stiffening the sediment. The microstructure and growth of gas hydrates (CH4 and CO2) in porous media were observed in situ by Magnetic resonance imaging (MRI). The experimental results confirmed the random nucleation of gas hydrates in porous media. The results show that hydrates are preferentially formed in the pore spaces. Hydrates then occupy the pores of porous media gradually, but do not cement the adjacent glass beads in the final stage. Gas hydrates are believed growing as free-floating model in porous media. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：124 / 128
页数：5
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