油水砂多相流中固体颗粒对弯管及T型堵头管的冲蚀
Erosion of Pipe Bend and Plugged Tee by Solid Particles in Oil-Water-Sand Multiphase Flow
摘 要
采用计算流体动力学方法在欧拉坐标系下求解连续相运动方程，在拉格朗日坐标系下求解离散相颗粒轨道方程，并利用冲蚀方程研究了管内油、水、砂多相流中固体颗粒运动与管道冲蚀的相互关系，预测最大冲蚀发生位置。结果表明: 弯管冲蚀最严重处位于下游直管段与弯头连接处外侧，T型堵头管冲蚀最严重处位于上下游直管段交接处内侧，T型堵头管的最大冲蚀速率远大于弯管的；T型堵头管中存在明显的颗粒相互碰撞区域以及颗粒滞留区域，在颗粒相互碰撞区域颗粒对管壁的碰撞能降低，在颗粒滞留区域颗粒的滞留减少了新来颗粒对堵头的碰撞，这两个区域都从一定程度上减小了颗粒对管道的冲蚀作用。
T型堵头管
油水砂
多相流
冲刷腐蚀
颗粒轨迹
pipe bend
plugged tee
oil-water-sand
multiphase flow
erosion-corrosion
particle trajectory
Abstract
The method of computational fluid dynamics (CFD) was used to solve continuous phase motion equation in the Euler coordinate system, and to solve the discrete phase particle trajectory equation in the Lagrange coordinate system. Then the erosion equation was used to study the relationship between solid particles and pipe erosion in oil-water-sand multiphase flow, and then the maximum erosion position was predicted. The results show that the most serious erosion region in the bend pipe was in the outermost side of the junction of downstream straight pipe and elbow; however for plugged tee, the region was the inner side of the junction of upstream and downstream straight pipe. And the maximum erosion rate of plugged tee was much higher than that of pipe bend. Particle collision region and particle retention region were found in the plugged tee. In the collision region, the collision energy of particles against pipe wall decreased, while in the retention region, the retention of particles impeded the impacts of new particles against the plugged tee. These two regions reduced erosion rate of plugged tee in a certain extent.
中图分类号 TG174 DOI 10.11973/fsyfh-201602009
所属栏目 试验研究
基金项目 国家自然科学基金(51274232)； 中央高校基本科研业务费专项资金资助(15CX06070A)
收稿日期 2015/1/29
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备注曹学文(1966-)，教授，博士，从事天然气处理与加工、油气水多相流理论及应用、海底管道完整性管理等方面的研究，
引用该论文: PENG Wen-shan,CAO Xue-wen,JI Jun-yi,JIN Xue-tang,WANG Qing. Erosion of Pipe Bend and Plugged Tee by Solid Particles in Oil-Water-Sand Multiphase Flow[J]. Corrosion & Protection, 2016, 37(2): 131
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参考文献
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【3】BUEL J R,SOLIMAN H M,SIMS G E. Two-phase pressure drop and phase distribution of a horizontal tee junction[J]. International Journal of Multiphase Flow，1998，24: 775-792.
【4】PANDEY S，GUPTA A，CHAKRABARTI D P，et al. Liquid-liquid two phase flow through a horizontal T-junction[J]. Chemical Engineering Research & Design，2006，84(10): 895-904.
【5】吴铁军，郭烈锦，刘文红，等. 水平管内油水两相流流型及其转换规律研究[J]. 工程热物理学报，2002，23(4): 491-494.
【6】钟兴福，黄志尧，吕鹏举，等. 125 mm垂直圆管中油水两相流流型辨识研究[J]. 石油学报，2001，22(5): 89-94.
【7】BOURGOYNE A T. Experimental study of erosion in diverter systems due to sand production［C］//Proceedings of the SPE/IADC Drilling Conference. New Orleans:[s.n.],1989:807-816.
【8】CHEN X，MCLAURY B S，SHIRAZI S A. Application and experimental validation of a computational fluid dynamics (CFD)-based erosion prediction model in elbows and plugged tees［J］. Computer and Fluids，2004，33(10):1251-1272.
【9】LIU Y C,ZHAN Y L,YUAN J M,et al. Research on corrosion perforation on pipeline by media of high salinity acidic oil-water mixture[J]. Engineering Failure Analysis,2013,34:35-40.
【10】STACK M M,ABDULRAHMAN G H. Mapping erosion-corrosion of carbon steel in oil-water solutions:effects of velocity and applied potential[J]. Wear.2012,(274/275):401-413.
【11】ZHANG G A,CHENG Y F. Electrochemical corrosion of X65 pipe steel in oil/water emulsion[J]. Corrosion Science,2009,51:901-907.
【12】ZENG L,ZHANG G A,GUO X P,et al. Inhibition effect of thioureidoimidazoline inhibitor for the flow accelerated corrosion of an elbow[J]. Corrosion Science,2015,90:202-215.
【13】ZENG L,ZHANG G A,GUO X P. Erosion-corrosion at different locations of X65 carbon steel elbow[J]. Corrosion Science,2014,85:318-330.
【14】MORSI S A,ALEXANDER A J. An Investigation of particle trajectories in two-phase flow systems[J]. J Fluid Mech,1972,55(2):193-208.
【15】BADR H M,HABIB M A,BEN-MANSOUR R,et al. Numerical investigation of erosion threshold velocity in a pipe with sudden contraction[J]. Computers & Fluids,2005,34(6):721-742.
【16】朱娟,张乔斌,陈宇,等. 冲刷腐蚀的研究现状[J]. 中国腐蚀与防护学报,2014,34(3): 199-210.
【17】ZHANG Y,REUTERFORS E P,MCLAURY B S,et al. Comparison of computed and measured particle velocities and erosion in water and air flows[J]. Wear,2007,263:330-338.
【18】PARIS M,NAJMI K,NAJAFIFARD F,et al. A comprehensive review of solid particle erosion modeling for oil and gas wells and pipelines applications[J]. Journal of Natural Gas Science and Engineering,2014,21:850-873.
【19】SUZUKI M,INABA K,YAMAMOMO M. Numerical simulation of sand erosion in a square-section 90-degree bend[J]. Journal of Fluids Science and Technology,2008,3(7): 868-880.
【20】FORDER A,THEW M,HARRISON D. Numerical investigation of solid particle erosion experienced within oilfield control valves[J]. Wear 1998,216:184-193.
【21】GRANT T,TABAKOFF W. Erosion prediction in turbomachinery resulting from environmental solid particles[J]. J Aircraft,1975,12:471-547.
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