基于Pipsys的凝析气管道段塞流形成的预测  

The prediction of slug flow formation in condensate gas pipelines with Pipsys

作　　者：熊新强 刘欣 李原欣[2] 朱世民[2] 

机构地区：[1]中国石油集团工程设计有限责任公司华北分公司,河北任丘062552 [2]北京华油天然气有限责任公司,北京100101

出　　处：《油气储运》2013年第5期493-495,507,共4页Oil & Gas Storage and Transportation

摘　　要：凝析气的特殊性质导致其在集输过程中可能形成段塞流,严重影响集输系统的稳定性和安全性,段塞流的成功预测是确保凝析气集输管道正常运行的关键。以巴喀凝析气田集输管道为例,首先根据Hysys中气体组分的气相平衡图,分析管道系统形成段塞流的可能性,然后利用Pipsys分析该管道在不同压力、温度和高程工况下的运行状态,最终根据管道内的液体体积分数及管道持液量,判断管道内段塞流的形成。研究结果表明:随着压力的增大,管道内介质先从两相流转化为单相流(气相),再转化为两相流并有段塞流产生。通过对模拟结果进行分析,给出了预防段塞流形成的可行措施。Condensate gas has special behaviors, which will lead to a slug flow formed in the gathering process and seriously affect the stability and safety of gathering system, therefore, it is vital to successfully predict the slug flows so as to ensure the normal running of condensate gas gathering pipeline. Taking the gathering pipeline of Baka Condensate Gasfield as an example, the paper analyzes the possibility of formation of slug flow in the pipeline according to the gas phase equilibrium diagram of gas component with Hysys firstly, and then analyzes the operation states of the pipeline under different pressure, temperature and elevation, and finally determines the formation of slug flow in the pipeline according to the liquid volume fraction and the pipeline liquid holdup volume in the pipeline. Results show that with the pressure＇s increase, the media in the pipeline are changed from two-phase flow into single-phase flow （gas phase）, then converted to two-phase flow again, and finally to a slug flow. This paper provides some practical measures to the prevention of slug flow formation based on the simulation analysis results.

关 键 词：凝析气 管道 反凝析 段塞流 Pipsys 

分 类 号：TE832[石油与天然气工程—油气储运工程]