油气田集输管道的冲蚀模拟研究及影响因素分析  

Simulation Research and Influencing Factors Analysis on Petroleum Pipeline Erosion

作　　者：徐上 XU Shang(Logging and Testing Services Company,Daqing Oilfield Co.Ltd.,Daqing,Heilongjiang 163453,China)

机构地区：[1]大庆油田有限责任公司测试技术服务分公司

出　　处：《石油管材与仪器》2019年第6期25-27,32,共4页Petroleum Tubular Goods & Instruments

摘　　要：为研究石油管道冲蚀现象的影响因素,基于湍流理论和冲蚀模型,通过建立COMSOL有限元模型,计算分析了流体固体颗粒的大小、入口速度以及流体粘度对冲蚀速率的影响,并建立了相对关系。结果表明:粒径偏小时,管道的最大冲蚀位置集中于管段与弯头内壁衔接处的外侧区域,而随着粒径的逐渐增加,逐渐向弯管内壁的外侧转移。入口速度偏小时,管道的最大冲蚀位置集中于管段与弯头内壁衔接处的外侧区域,而随着速度的增大,管道的最大冲蚀位置逐渐向弯头的外管壁偏移。随着流体粘度的增加,冲蚀速率逐渐降低,且冲蚀速率的降低速度趋于平缓。In order to research the influencing factors of petroleum pipeline erosion,the finite element model was established by COMSOL on the basis of turbulence theory and erosion model.By analyzing the impact of particle size in fluid,inlet velocity and fluid viscosity on erosion rate,the relative relation was determined.According to simulation results,it was found that the position of maximum erosion rate was concentrated on the outer side at the connection area of the pipe section and the elbow under small particle size.Maximum erosion rate transferred to the outer of the elbow gradually with increase of the particle size.When the inlet velocity is small,the maximum erosion rate mainly lied on the connection area of the pipe section and the elbow,and it steadily drifted to the outer side of the elbow by increasing of the velocity.The increase of fluid viscosity results in gradual decrease of erosion rate which tends to be smoother.

关 键 词：颗粒直径 入口速度 流体粘度 最大冲蚀速率 

分 类 号：TE988[石油与天然气工程—石油机械设备]