多起伏大高差油气混输管道停输和再启动瞬态流动规律研究  

Study on the Transient Flow Law of Shutdown and Restart of Oil and Gas Mixed Pipelines with Multiple Fluctuations and Large Height Differences

作　　者：李嘉宁 杜胜男[1] 范开峰[1] 晁凯[2] 黄雪松 李伟 王卫强[1] Li Jianing;Du Shengnan;Fan Kaifeng;Chao Kai;Huang Xuesong;Li Wei;Wang Weiqiang(College of Petroleum Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China;Petroleum Engineering Technology Institute,Zhongyuan Oilfield Company SINOPEC,Puyang Henan 457000,China;Inner Mongolia Oil Production Plant,Zhongyuan Oilfield Company SINOPEC,Bayannur Inner Mongolia 015000,China)

机构地区：[1]辽宁石油化工大学石油天然气工程学院,辽宁抚顺113001 [2]中国石化中原油田分公司石油工程技术研究院,河南濮阳457000 [3]中国石化中原油田分公司内蒙采油厂,内蒙古巴彦淖尔015000

出　　处：《辽宁石油化工大学学报》2022年第2期55-60,共6页Journal of Liaoning Petrochemical University

基　　金：辽宁省教育厅项目(L20190008、L2020027)。

摘　　要：采用OLGA软件建立了某油气混输管道几何模型,研究了管道停输和再启动过程中的瞬态流动规律。首先,分析了管道稳态运行时沿线温度、压力和持液率的分布特点,确定了沿线温度最小值所处位置及压力最大值所处位置,分析了环境温度和停输时间对运行参数的影响,确定了可保证温度最低点处原油温度高于其凝点的安全停输时间。在实际运行过程中,停输时间不应超过安全停输时间,否则容易出现管道凝管、启动压力过大等问题,威胁管道的安全运行。The geometric model of a certain oil and gas mixed transportation pipeline was established with OLGA software, and the transient flow law during the pipeline shutdown and restart process was studied. First, the distribution characteristics of temperature, pressure and liquid holdup along the pipeline during steady state operation were analyzed, and the location of the minimum temperature and the location of the maximum pressure along the pipeline were determined. The influence of environmental temperature and shutdown time on operating parameters were analyzed. The safe shutdown time when the minimum temperature temperature is higher than its freezing point was determined. In the actual operation process, the shutdown time should not exceed the safe shutdown time, otherwise problems such as pipeline condensation and excessive starting pressure will easily occur, which threaten the safety of the pipeline.

关 键 词：油气混输管道 停输再启动 持液率 温降 数值模拟 

分 类 号：TE83[石油与天然气工程—油气储运工程] X937[环境科学与工程—安全科学]