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| 1 | Experimental simulations and methods for natural gas hydrate analysis in China显示文摘This paper provides an overview of the developments in analytical and testing methods and experimental simulations on gas hydrate in China.In the laboratory,the analyses and experiments of gas hydrate can provide useful parameters for hydrate exploration and exploitation.In recent years,modem analytical instruments and techniques,including Laser Raman spectroscopy (Raman),X-ray diffraction (XRD),X-ray computed tomography (X-CT),scanning electron microscope (SEM),nuclear magnetic resonance (NMR) and high pressure differential scanning calorimetry (DSC),were applied in the study of structure,formation mechanisms,phase equilibrium,thermal physical properties and so forth of gas hydrates.The detection technology and time-domain reflectometry (TDR)technique are integrated to the experimental devices to study the physical parameters of gas hydrates,such as the acoustics,resistivity,thermal,and mechanical properties.It is believed that the various analytical techniques together with the experimental simulations from large-scale to micro-scale on gas hydrate will play a significant role and provide a powerful support for future gas hydrate researches. | Neng-you Wu Chang-ling Liu Xi-luo Hao | 2018 | China Geology2018，1，1： | 16 |
| 2 | 核磁共振成像原位监测冰融化及四氢呋喃水合物分解的微观过程显示文摘核磁共振成像(Magnetic Resonance Imaging,MRI)可以通过物质在不同相态之间的亮度差别来识别物质相态的变化,冰、水和水合物之间较大的亮度对比使MRI成为监测水合物生成分解动态过程的有效工具.采用MRI原位监测了冰融化和四氢呋喃(THF)水合物分解的微观过程,从微观角度对比研究了THF水合物分解与冰融化过程的异同.冰融化和THF水合物的分解过程受传热程控,冰的融化和水合物的分解总是沿着固-液界面从外向内推进,消解速度持续加快.固相表面的'结构化水层'是冰和水合物立体结构瓦解的主要原因.THF水合物的分解过程与气体水合物不同,没有明显的'自保护效应'.由于温度梯度产生的密度差异,液相产生自然对流,造成了水合物的分解及冰的融化过程中固-液界面运动的随机性. | 孟庆国 刘昌岭 业渝光 | 2012 | 应用基础与工程科学学报2012，20，1： | 9 |
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