Natural gas hydrate has huge reserves in the world,which is considered to be one of the most promising unconventional energy to replace the conventional energy in the future.At home and abroad, there are lots of researches on gas hydrate.However, it is difficult to achieve original gas hydrate samples for its special properties.At present, the method of preparation natural gas hydrate in laboratory is widely adopted for hydrate research.This paper focused on the existing problem for the synthesis of natural gas hydrate in porous media of the traditional method, namely, the porous medium blockage caused by the expansion of gas hydrate synthesis and provided a new method of natural gas hydrate samples synthesis in a dynamic environment.That is the method of compound natural gas hydrate by gas and deionized water in the process of circulation.The results showed that the new method could compound gas hydrate with higher saturation in porous media with 20%~30%.%天然气水合物储量巨大,被认为是未来能替代常规能源的最具前景的主要非常规能源之一.国内外已经对其进行了大量的研究;但由于其特殊的性质,获得原始天然气水合物样品较困难,目前对于天然气水合物进行的研究均采用在实验室内制备的方法.针对在多孔介质内合成天然气水合物的传统方法存在的问题,即在合成天然气水合物时,由于体积膨胀导致多孔介质堵塞,因而导致天然气水合物合成效率低下的难题进行了研究;提供了一种新型的在动态环境下合成天然气水合物样品的新方法,即天然气在流动循环的过程中与去离子水合成天然气水合物的方法.验证结果表明该方法是在多孔介质中合成较高饱和度的天然气水合物一种行之有效的方法.通过该方法在多孔介质中合成天然气水合物的饱和度比传统合成方法要高20%~30%.
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