摘要
针对清管过程中起伏地形管道水试压后清管器的不稳定运动,不仅影响管道稳定运行,严重时甚至会造成爆管事故的现象,文章介绍了清管器进入下倾管的4个过程,最后一个阶段出现气液喷发现象,结合流体质量和运动方程,清管器动力方程和气液喷发模型,提出了水试压后清管过程的瞬变水力模型,模拟管道流体流动状态、跟踪清管器运动状态,并预测管道的水力脉冲值,进行安全评估。模拟结果与两次清管爆管事故的数据基本一致,结果验证了所建立模型的正确性,计算结果可靠,可为现场制定清管方案提供可靠、有效的理论依据,有助于保障管道安全运行。
The unstable movement of the pig in undulating terrain pipelines after hydrostatic testing during the pigging process,not only affects the stable operation of the pipeline,but even lead to the bursting accident of pipe in severe cases.This article introduced the four stages of the pig entering the downhill pipe.In the last stage,gas-liquid eruption phenomenon appeared.Combined fluid mass and motion equations,the pig's dynamic equation,and the gas-liquid eruption model,a transient hydraulic model for the pigging process after hydrostatic testing was proposed.This model could simulate the fluid flowing state in the pipeline,and track the pig's movement,and predict the hydraulic pulse value of the pipeline,and conduct a safety assessment.The simulation results were basically consistent with data from two bursting accident of pipe during pigging,which verified the accuracy of the established model.The reliable calculation results provided a reliable and effective theoretical basis for formulating on-site pigging plans,contributing to the safe operation of the pipeline.
作者
邓涛
孙新
宫敬
Deng Tao;Sun Xin;Gong Jing(Beijing Petroleum Management Institute(Guangzhou Campus);Guangdong Nanhua Vocational College of Industry and Commerce;China University of Petroleum(Beijing))
出处
《油气田环境保护》
CAS
2024年第4期74-78,共5页
Environmental Protection of Oil & Gas Fields
关键词
清管
压力脉冲
气液喷发
瞬态模拟
安全评估
pigging
hydraulic pulse
gas-liquid eruption
transient simulation
safety assessment
