Study On Detection And Location Method Of Oil Pipeline Leakage Based On Model Method

Pipeline transportation plays an increasingly important role in the oil and gas industry.With the rapid increase of pipeline mileage in China,the safety hazard caused by pipeline leakage is becoming more and more prominent.Frequent pipeline leakage accidents not only cause casualties and property losses,but also bring great harm to public safety and ecological environment.At the same time,it also exposes the shortcomings of China's oil and gas pipeline leak detection,leak location,leakage prediction and emergency response.Therefore,it is of great theoretical and practical significance to carry out the research on pipeline leak detection and location.The oil pipeline is taken as the main research object in this paper,the transient flow model of pipeline is established and its characteristic line solution method is studied.Based on the liquid pipeline simulation software TLNET,the simulation model of Qingdao 11·22 pipeline leakage accident was established.This paper studies the process of pipeline leakage accident,and the simulation results are consistent with the accident report.The leakage simulation process can provide technical support for the emergency rescue work.Then the paper studies the method of establishing real-time pipeline model based on transient flow.Based on the model method,the leakage detection and location system of the pipeline is established.A field test was carried out and the test results show that the leakage detection and location system of the Zhongluo pipeline has good effect in the detection and location of small leaks in the pipeline,and the real-time leakage calculation has high accuracy.The construction process and test results of the system can provide reference for the application of the model method in the industrial application of pipeline leak detection and location.In this paper,the pipeline leak detection and location system based on model method has obvious advantages in the detection of small leaks,slow leaks and real-time leakage calculation of pipelines.It can provide technical support for pipeline enterprises to monitor the operation status of oil and gas pipelines in real time and deal with pipeline leakage accidents quickly and effectively,and provide decision-making basis for government safety supervision and emergency management.