介绍了天然气管线中水合物生成条件、以及水合物的生成对管线正常输送和安全运行的影响；提出了天然气管线水合物生成影响因素比较框图，对不同输送工况下管道中水合物的生成进行了分析，得出天然气管线中水合物生成影响因素有输量、起点压力、起点温度和管径，其中输量影响最大，起点压力影响最小，适当增大输量、提高起点温度、降低起点压力和减小管径，可以缩小水合物生成范围甚至避免水合物生成。%The formation of gas hydrate in natural gas pipeline could cause a serious impact on the normal and safe transportation of natural gas. The formation conditions of hydrate in the pipeline were introduced, and a block diagram for comparison of the influence factors of hydrate formation in the pipeline was proposed. Through analyzing the hydrate formation under the different transportation conditions in a concrete example, it was found that the factors affecting the formation of the hydrate contained transportation amount, initial pressure, initial temperature and pipe diameter, among them the most significant was the transportation amount and the lowest in importance was the initial pressure. The formation of gas hydrate could be reduced even avoided by properly increasing transportation amount, raising initial temperature and decreasing initial pressure and pipe diameter.
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