水下海管干燥作业时露点影响因素分析

Analysis of the influence factors of dew point in the drying operation of underwater pipeline

干燥作业是海底输气管道在投产前的重要保证。就干燥作业的原理、分类进行论述,重点结合南海某水下预调试项目分析了干燥过程中各个因素如温度、压力、相对湿度等对露点的影响及程度,并提出一些同类项目在计算或施工方面的建议。

Drying the subsea pipeline is guarantee of production.In this article we will discuss the principle and category of drying and analyze the influence of temperature,pressure and relative humility to dew point in drying operation combined with one subsea pre-commissioning project at south China sea,and provide some suggestion of calculation and construction in similar project.