起伏湿气管路持液率和压降计算模型

发布时间：2018-05-20 16:55

本文选题：起伏湿气管路 + 瞬态两相流模型　；参考：《石油工程建设》2016年06期

【摘要】：湿气集输管道在天然气开发中发挥着重要作用,如果湿气管道内存在积液,会导致能耗增加、腐蚀加剧和生成水合物等问题,但目前尚没有一个瞬态两相流模型能够准确地计算起伏湿气管道中的积液和压降规律。在已有的两相流双流体模型基础上,基于连续性方程和动量方程,建立了一种新的适用于起伏管路的瞬态两相流理论模型,并利用数值方法通过编制MATLAB程序实现对起伏湿气管道中持液率及压降等的计算。利用普光气田现场湿气集输管道的运行数据对模型进行了验证,并与多相流软件OLGA的模拟计算结果进行了对比。验证结果证明所建立的模型计算精度较高,持液率和压降的相对误差分别为±15%、±5.5%,可以应用于起伏湿气管道两相流的模拟。
[Abstract]:The wet gas gathering pipeline plays an important role in natural gas development. If there is liquid accumulation in the wet gas pipeline, it will lead to the increase of energy consumption, the intensification of corrosion and the formation of hydrates, etc. However, there is no transient two-phase flow model that can accurately calculate the fluid accumulation and pressure drop in the fluctuating wet gas pipeline. Based on the existing two-phase flow two-fluid model and the continuity equation and momentum equation, a new theoretical model of transient two-phase flow for undulating pipes is established. The calculation of liquid holdup and pressure drop in fluctuating wet gas pipeline is realized by using numerical method and MATLAB program. The model is verified by the running data of wet gas gathering pipeline in Puguang gas field and compared with the simulation results of multiphase flow software OLGA. The results show that the calculated accuracy of the model is high, the relative errors of liquid holdup and pressure drop are 卤15 and 卤5.5, respectively, which can be applied to the simulation of two-phase flow in undulating wet gas pipelines.
【作者单位】：中海石油(中国)有限公司天津分公司;中石化天津石油分公司;
【分类号】：TE977

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