当前位置：首页 > 过刊浏览->2025年第51卷第5期
起伏地形输气管道运行状态模拟及清管排液风险防控研究
Simulation of running state of gas pipeline in undulating terrain and research on risk prevention and control of pigging and drainage
浏览(589) 下载(13)
- DOI:
- 10.3969/j.issn.1001-2206.2025.05.010
- 作者:
- 曹兴滨, 夏晓辉, 邓帮辉, 朱军凯, 郭瑛, 李瀚翔
CAO Xingbin, XIA Xiaohui, DENG Banghui, ZHU Junkai, GUO Ying, LI Hanxiang
- 作者单位:
- 1. 中国石油塔里木油田公司油气运销事业部, 新疆库尔勒 841000;2. 重庆科技大学石油与天然气工程学院, 重庆 401331
1. Oil and Gas Transportation and Marketing Department, Tarim Oilfield Company, CNPC, Korla 841000, China;2. College of Petroleum and Natural Gas Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
- 关键词:
- 起伏地形输气管道; OLGA仿真模拟; 持液率; 清管排液风险; 风险应对策略
gas pipeline in undulating terrain;OLGA simulation;liquid holdup;risk of pigging and liquid drainage;risk response strategy
- 摘要:
-
地形起伏地区的天然气输送管道受高程变化与显著的气液两相流特性的影响，易发生积液与压力波动等问题，威胁管道安全运行。以KL管道为研究对象，基于OLGA软件建立了动态仿真模拟模型，系统研究了管道沿程压力、温度、持液率，以及积液量等参数的时空演化规律。模拟结果表明：管道整体运行状态良好，但在某些特定里程段持液率出现了显著变化，且管内总积液量偏大，可能诱发电化学腐蚀，降低输送效率。针对清管作业可能带来的分离器过载风险，通过模拟分析提出了扩建分离回收装置能力、增输运行后清管以及优选旁通清管器等应对策略。可为复杂地形输气管道的生产运行与安全管理提供有效的技术支撑。
Gas pipelines in undulating terrains are prone to issues such as liquid accumulation and pressure fluctuations due to elevation changes and significant gas-liquid two-phase flow characteristics, posing threats to pipelines’ operational safety. This paper took the KL pipeline as the research object and established a dynamic simulation model based on the OLGA software to systematically study the spatiotemporal evolution of parameters such as pressure, temperature, liquid holdup, and liquid accumulation along the pipeline. The simulation results indicate that the overall operational status of the pipeline is good, but significant changes in liquid holdup occur in certain specific sections, and the total liquid accumulation in the pipeline is relatively high, which may induce electrochemical corrosion and reduce transportation efficiency. In response to the risk of separator overload that may arise from pigging operations, strategies such as expanding the capacity of the separation and recovery unit, performing pigging after increasing the transportation flow rate, and selecting optimal bypass pigs were proposed through simulation analysis. This study provided effective support for the production operation and safety management of gas pipelines in complex terrains.