Experimental study on characteristics of methane hydrate formation and dissociation in porous medium with different particle sizes using depressurization
Experimental study on characteristics of methane hydrate formation and dissociation in porous medium with different particle sizes using depressurization
复制标题
不同粒径多孔介质中甲烷水合物降压生成与解离特性实验研究
DOI：
10.1016/j.fuel.2018.05.008
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发表时间：
2018
期刊：
影响因子：
7.4
通讯作者：
Li Xiao-Sen
中科院分区：
文献类型：
--
作者：
Zhan Lei;Wang Yi;Li Xiao-Sen
天然气水合物是一种潜在的能源。由于水合物开采的复杂性，水合物能源的商业化应用有待进一步发展。水合物分解过程中，颗粒大小对沉积物孔隙中气水交换能力有显著影响。此外，水合物分解过程中的沉积物变形通常与海洋灾害有关，需要进一步表征。采用不同粒径的石英砂模拟水合物储层沉积物。根据数据分析，甲烷水合物的形成和产气速率随着沉积物粒径的不同而降低，这是由于比表面积的不同。此外，水合物分解后，沉积物表现出不同的变形。粒径越小的沉积物在甲烷水合物分解后产生的变形越明显。
Natural gas hydrate (NGH) is characterized as a potential energy resource. The commercial application of hydrate energy requires further development due to the complexity of hydrate exploitation. The particle size significantly affects the exchange ability of gas and water in the pores of the sediment during hydrate dissociation. In addition, sediment deformation during hydrate decomposition is generally correlated with marine disasters and requires further characterization. In this work, different quartz sand particle sizes were applied to simulate the sediment of hydrate reservoir. According to the data analysis, the formation and gas production rates of methane hydrate decreased with sediment particle size due to the difference of the specific surface area. In addition, the sediments exhibited different deformations after the hydrate dissociation. Smaller sediment particle sizes generated more obvious deformations following methane hydrate decomposition.