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在复杂湿气集输管网中,当管道实际运行压力、输量高于或低于管道设计运行压力、设计输量时,计算出的管道输气效率会出现大于100%或偏低的情况,使得管道清管周期的合理制定非常困难。为了确定管网的清管时机,制定合理的清管周期,减少清管作业频次,提出利用相对输气效率、管道始末端压差梯度、预测积液量与管容体积百分比、管道气体流速等参数综合分析判断管道清管时机的新方法。通过对苏里格气田集输骨架管网历次清管作业的分析计算,认为该方法符合现场作业的实际情况,可以准确判断出复杂湿气集输管道的清管时机,为现场清管周期的确定和清管方案的编制提供科学有效的依据。
In the complex moisture gathering and transmission network, when the pipeline actual operating pressure, the transmission volume is higher or lower than the pipeline design operating pressure, the design pipeline output, the calculated pipeline gas transmission efficiency will appear more than 100% or low , Making the rational development of pipeline pigging cycle is very difficult. In order to determine the timing of pipe cleaning, to develop a reasonable cycle of pigging and reduce the frequency of pigging operations, the use of relative gas transmission efficiency, differential pressure gradient at the beginning and end of the pipeline, the predicted volume of liquid volume and volume percentage of pipe volume, A New Method for Determining Timing of Pipe Cleaning Based on Parameter Analysis. Through the analysis and calculation of previous pigging operation of Sulige gas field pipe network, the method is considered to be in line with the actual situation of field operation, which can accurately determine the timing of pigging of complex moisture gathering and transporting pipelines, Determine and pig control program to provide a scientific and effective basis.