甲烷水合物形成过程的CT识别原理和成像特征

采用计算机断层扫描技术(CT系统)开展了甲烷-纯水体系的气水合物生成和分解实验研究,结果表明,利用CT系统可以直观地获得甲烷水合物生成和分解的动态变化过程。指出:甲烷水合物的生成基本上从气液分界面开始,且形成初期存在突变性;生成的气水合物起初非常疏松、呈絮状,然后逐步变得密实;气水合物分解则是一个不断释放气体,由密实变得疏松的过程。

COMPUTERIZED TOMOGRAPHY IDENTIFYING AND ITS IMAGING CHARACTERISTICS INCOMBINATION AND DISSOCIATION PROCESS OF METHANE HYDRATE

The experiment of combination and dissociation process of methane hydrate researched by computerized tomography(CT) is expatiated on in this article.It was proved that CT could identify the combination and dissociation process of methane hydrate distinctly.The dynamic process of methane hydrate can be recorded by CT images which reflect the density information.It was shown in this experiment that there was a paroxysmal beginning at the early time of combination which began at the interface between water and methane and the early resultant was loose and with low density which would become denser.And the methane hydrate became loose and released the gas during dissociation process.