在起伏多相管流中常出现段塞流。段塞流流动特性参数的计算只能采用经验或半经验关系式。现场实践表明,段塞长度不仅与管径有关,而且还与气液相速度和气液相粘度等有关。结合现场试验,提出了一种计算起伏多相管流中段塞流流动特性参数的准确方法。 Slug flow often occurs in fluctuating multiphase flow. Slug flow characteristics of flow parameters can only be calculated using empirical or semi-empirical relationship. Field practice shows that the slug length is not only related to the pipe diameter, but also with the gas-liquid velocity and gas-liquid viscosity and so on. Combined with the field test, an accurate method for calculating the flow characteristics of the middle slug flow in the multi-phase flow is proposed.