低含液率混输管路气量瞬变稳定时间试验研究  

LABORATORY STUDY ON STABLE TIME OF GAS FLOW RATE TRANSIENTS IN MULTIPHASE FLOW PIPELINES WITH HIGH GAS/LIQUID RATIO

作　　者：李玉星[1] 唐建峰[1] 王武昌[1] 于婷婷[1] 

机构地区：[1]中国石油大学

出　　处：《天然气工业》2006年第12期144-146,共3页Natural Gas Industry

基　　金：中石油中青年创新基金项目"凝析天然气计量技术研究"(编号:03E7022)的部分成果

摘　　要：天然气、湿天然气等低含液率输送管线稳定平衡时间的确定为海上油气田开发的一个重要技术难题。通过大量试验,得到气量增加和减小过程稳定平衡时间都与流型有关:分层流情况下,稳定平衡时间都随液相折算速度增加而降低;段塞流情况下,稳定平衡时间都随液相折算速度增加而增加,气量减小过程稳定平衡时间小于对应互逆的气量增加过程稳定平衡时间。选择液相雷诺数、欧拉数等9个控制气液两相管流的无量纲数进行灰色关联分析,确定出了各无量纲数对稳定平衡时间的影响程度,并选择影响最大的3个因素:气相折算速度准数、气相折算速度准数增加值以及液相折算速度准数,得出了气量瞬变过程稳定平衡时间计算关系式,具有一定的理论价值。The study on the stable time of gas flow rate transients in multiphase flow pipeline with high gas-liquid ratio is an important technology subject to solve. Through a great number of laboratory tests, the results show that the stable time is related to the flow type during the gas increasing and reducing process. Under the state of stratified flow, the stable time reduces by the increase of N_ lw ; while under the state of slug flow, the stable time increases by the increase of N_ lw . And the stable time during the gas reducing process is less than that during the corresponding gas increasing process. The effect is discussed on the stable time of gas flow rate transients by some factors such as Reynolds number and Euler constant, which are among those dimensional numbers controlling the gas-liquid flow, being seriated with grey relational degree analysis. And two empirical relations, which can be used to estimate the stable time in gas flow rate transients accurately, are regressed with the most important three factors, N_gw , ΔN_gw and N_lw .

关 键 词：凝析气 混输 管道 不稳定流动 平衡 时间 模糊数学 

分 类 号：TE832[石油与天然气工程—油气储运工程]