海底管道泄漏油气扩散规律数值仿真与对比分析
发布时间：2018-12-14 20:27
【摘要】：为研究海底原油与天然气单相泄漏扩散规律的差异性,合理制定应急响应策略,减小事故损失,针对海底管道失效所致的原油与天然气泄漏问题,基于计算流体动力学CFD方法,建立海底油气管道泄漏事故后果预测与评估模型,对特定事故场景下的海底原油与天然气泄漏扩散过程进行模拟与分析,从泄漏扩散过程、工况因素影响、泄漏后果及应对策略4个方面对比原油与天然气的泄漏扩散特性。结果表明:相同工况下,海底原油与天然气在泄漏速率、扩散时间、扩散形态及水平最大扩散距离方面存在显著差别;与天然气相比,原油泄漏扩散行为对工况因素具有更高的敏感性;原油泄漏会引发严重的环境灾害,天然气泄漏则会影响海上结构物的稳定性及引发火灾爆炸事故,据此需合理制定具有针对性的应对策略。
[Abstract]:In order to study the difference between the single phase leakage and diffusion law of submarine crude oil and natural gas, formulate the emergency response strategy reasonably and reduce the accident loss, aiming at the leakage of crude oil and natural gas caused by the failure of submarine pipeline, the computational fluid dynamics (CFD) method is used to solve the problem. A model for predicting and evaluating the consequences of submarine oil and gas leakage accidents is established, and the process of oil and gas leakage and diffusion under specific accident scenarios is simulated and analyzed. The leakage and diffusion characteristics of crude oil and natural gas are compared in four aspects. The results show that there are significant differences in leakage rate, diffusion time, diffusion morphology and horizontal maximum diffusion distance between submarine crude oil and natural gas under the same operating conditions. Compared with natural gas, the leakage and diffusion behavior of crude oil is more sensitive to the operating conditions. The leakage of crude oil will cause serious environmental disasters, and the leakage of natural gas will affect the stability of offshore structures and cause fire and explosion accidents.
【作者单位】： 中国石油大学(华东)海洋油气装备与安全技术研究中心;
【基金】：国家重点研发计划课题(2016YFC0802305) 中国石油大学(华东)研究生创新工程项目(YCXJ2016057)
【分类号】：TE832.2
[Abstract]:In order to study the difference between the single phase leakage and diffusion law of submarine crude oil and natural gas, formulate the emergency response strategy reasonably and reduce the accident loss, aiming at the leakage of crude oil and natural gas caused by the failure of submarine pipeline, the computational fluid dynamics (CFD) method is used to solve the problem. A model for predicting and evaluating the consequences of submarine oil and gas leakage accidents is established, and the process of oil and gas leakage and diffusion under specific accident scenarios is simulated and analyzed. The leakage and diffusion characteristics of crude oil and natural gas are compared in four aspects. The results show that there are significant differences in leakage rate, diffusion time, diffusion morphology and horizontal maximum diffusion distance between submarine crude oil and natural gas under the same operating conditions. Compared with natural gas, the leakage and diffusion behavior of crude oil is more sensitive to the operating conditions. The leakage of crude oil will cause serious environmental disasters, and the leakage of natural gas will affect the stability of offshore structures and cause fire and explosion accidents.
【作者单位】： 中国石油大学(华东)海洋油气装备与安全技术研究中心;
【基金】：国家重点研发计划课题(2016YFC0802305) 中国石油大学(华东)研究生创新工程项目(YCXJ2016057)
【分类号】：TE832.2
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