Simulation Analysis of Safe Shutdown and Restart Procedure in Oil Transportation Pipeline
It is inevitable to be shutdown and restart during the operation oftbe hot oil pipeline. The oil temperature in the pipe will decrease and the viscosity will increases after shutdown. When the oil temperature reaches a certain extent, the restart process will be difficult, and sometimes will even fail, which will cause serious economic loss and environmental pollution. In order to avoid this kind of accident, it is demand to analyze and calculate the rule of crude oil temperature-drop, the safe shutdown time and the restart pressure of the pipeline accurately. Base on the hydraulic and thermal analysis, this paper establishes the unsteady hydraulic and thermal models for shutdown and restart of the crude oil pipeline. Take the actual operating condition of Qing-Ha buried oil pipeline as an example, this peper applies numerical simulation method to simulate and analyze the rule of crude oil temperature drop after shutdown, the oil temperature distribution along the line and the pressure change in the pipeline when restart, and gets the discriminance of successful restart and restart time for the pipeline. All of above are significant for the safe operation of the pipeline.
hot-oil pipeline shutdown and restart rule of temperature-drop numerical simulation
YUAN Liang LIU Yang
School of Petroleum Engineering,Daqing Petroleum Institute,Daqing 163318,Heilongjiang,China
国际会议
The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)
北京
英文
1208-1212
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）