Methane hydrate reformation in porous media with methane migration
Methane hydrate reformation in porous media with methane migration
复制标题
多孔介质中甲烷水合物的重整与甲烷迁移
DOI：
10.1016/j.ces.2017.04.036
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发表时间：
2017-08
影响因子：
4.7
通讯作者：
Song Yongchen
中科院分区：
文献类型：
--
作者：
Wang Pengfei;Yang Mingjun;Chen Bingbing;Zhao Yuechao;Zhao Jiafei;Song Yongchen
The hydrate reformation that occurs in natural gas hydrate (NGH) exploration reduces mining efficiency and safety. To elucidate the hydrate formation/reformation characteristics during NGH exploration, methane hydrate (MH) was formed/reformed in two different modes to simulate mining of NGH sediment. The effects of residual water, residual MH and methane flow rate on MH reformation in a porous medium were investigated experimentally. Magnetic resonance imaging (MRI) was used to analyze MH saturation and distribution in the porous medium. In reformation, a positive correlation exists between the hydrate saturation (Sh) increment and MH dissociation. Moreover, the percentage of reformation Shincrement increases with the methane injection rate. That demonstrates MH dissociation by depressurization improves the contact area of gas-liquid and enhance the nucleation rate, which contributes to hydrate reformation. In addition, the residual Swand MH reformation rate maximum (Rmax) are positively correlated in the rapid-reformation period. According to MRI images, crack-like pathways exist in the porous medium after MH dissociates completely in the first experimental mode. However, constantly flowing methane in the MH reformation process can render the water distribution uniform after MH dissociation in the second experimental mode. That means the methane flow affects the capillary force distribution then further influences the pore water distribution in porous medium.
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影响因子：
5.3
作者：
Y. Seol;E. Myshakin
通讯作者：
Y. Seol;E. Myshakin
影响因子：
2.5
作者：
B. A. Baldwin;J. Stevens;J. Howard;A. Graue;B. Kvamme;E. Aspenes;G. Ersland;Jarle Husebø;D. Zornes
通讯作者：
B. A. Baldwin;J. Stevens;J. Howard;A. Graue;B. Kvamme;E. Aspenes;G. Ersland;Jarle Husebø;D. Zornes
影响因子：
4.2
作者：
Xinghe Yu;J. Wang;Jinqiang Liang;Shunli Li;X. Zeng;Wen Li
通讯作者：
Xinghe Yu;J. Wang;Jinqiang Liang;Shunli Li;X. Zeng;Wen Li
影响因子：
5.3
作者：
M. Vafaei;B. Kvamme;Ashok Chejara;K. Jemai
通讯作者：
M. Vafaei;B. Kvamme;Ashok Chejara;K. Jemai
DOI：
10.1021/jp052071w
发表时间：
2005-09
期刊：
The journal of physical chemistry. B
影响因子：
--
作者：
Shuqiang Gao;W. House;Walter G Chapman
通讯作者：
Shuqiang Gao;W. House;Walter G Chapman