Research on modeling of natural gas pipeline failure jet fire hazard
Author of the article:HE Jie1, JIANG Qi1, ZHU Guangshe2, PU Hongbin3, YUAN Fei4, SUN Hongan5, WANG Li6, ZHAO Zhonghua7, Y
Author's Workplace：1. School of Petroleum and Natural Gas Engineering, Southwest Petroleum University, Chengdu, Sichuan, 610500, China; 2. The Eleventh Oil Production Plant of PetroChina Changqing Oilfield Branch, Qingyang, Gansu, 745000, China; 3. Engineering Technology Company of PetroChina Xinjiang Oilfield Branch, Karamay, Xinjiang, 834000, China; 4. Sichuan Tietou Petroleum Co., Ltd., China Aviation Oil Group, Chengdu, Sichuan, 610041, China; 5. Lengjia Oilfield Development Company, PetroChina Liaohe Oilfield Branch, Panjin, Liaoning, 124099, China; 6. The Fifth Gas Production Plant of PetroChina Changqing Oilfield Branch, Xian, Shaanxi, 710016, China; 7. Drilling Technology Service Company, PetroChina Great Wall Drilling Co., Ltd., Panjin, Liaoning, 124000, China; 8. Ziyang Ganghua Gas Co., Ltd., Ziyang, Sichuan, 641300, China
Key Words：Natural gas pipeline; Pipeline failure; Jet fire; Hazard consequence area; Prediction model
Abstract：Aiming at the problems that the existing jet fire hazard consequence area calculation model has low calculation accuracy in predicting jet fire hazard and does not fully consider the impact of transverse wind, a comprehensive analysis and comparison of existing mathematical models (single point source model, multi-point source model, solid flame model), a linear integral model with higher accuracy and more in line with the shape of the actual jet fire hazard consequence area is proposed. And based on the data in the report on 2010 California natural gas pipeline failure jet fire incident, the validity of the model was verified. Finally, according to the established model, the influence of single factor (diameter of leakage hole, transverse wind) on the hazard consequence area is analyzed. The results show that the consequence area of jet fire is closer to an ellipse when the influence of transverse wind is taken into account. The ovality is the largest when the wind speed is 13 m/s under the reported working condition; the damage range of jet fire on the downwind side is greater than that on the upwind side. The research results will provide theoretical basis and technical support for the design, construction, operation and maintenance of natural gas pipelines.