缩径管内两相流砂粒碰撞和冲蚀特性研究

中国机械工程

缩径管内两相流砂粒碰撞和冲蚀特性研究

姚利明1;刘巨保1;张宏岩2;张晓川2;岳欠杯1

1.东北石油大学机械科学与工程学院，大庆，163000
2.大庆油田有限责任公司采油工程研究院，大庆，163000

出版日期:2018-03-25 发布日期:2018-03-21
基金资助:
国家自然科学基金资助项目(11502051)；
东北石油大学研究生科技创新项目(YJSCX2015-023NEPU)
National Natural Science Foundation of China （No. 11502051）

Study on Sand Collisions and Erosion Characteristics of Two Phase Flow in Contraction Pipes

YAO Liming1; LIU Jubao1;ZHANG Hongyan2;ZHANG Xiaochuan2;YUE Qianbei1

1.Mechanical Science and Engineering College,Northeast Petroleum University,Daqing，Heilongjiang，163000
2.Institute of Oil Production Engineering,Daqing Oil Field Co.,Daqing，Heilongjiang，163000

Online:2018-03-25 Published:2018-03-21
Supported by:
National Natural Science Foundation of China （No. 11502051）

摘要/Abstract

摘要： 针对目前建模方法在描述两相流中砂粒碰撞行为方面存在的不足，运用计算流体力学和离散单元耦合方法建立了压裂工况下的缩径管两相流模型，实验验证了仿真模型的准确性。分析了缩径管内砂粒间碰撞及缩径斜面受力规律，研究发现，缩径斜面冲蚀深度随砂比增大而增大，砂比大于40%时，相同时间的冲蚀深度增量减小，并趋于最大值；缩径斜面冲蚀深度随黏度增大而减小，流体黏度对缩径斜面外缘比对内缘的冲蚀深度影响大。

关键词: 冲蚀, 两相流, 砂粒碰撞, 计算流体力学和离散单元耦合方法

Abstract: As the shortcomings of current modeling method in describing the sand erosions in two phase flow, CFD-DEM was used to build contraction pipe two phase flow in fracturing condition, the accuracy of simulation model was testified by experiments and the force laws of particle collisions and contraction areas in contraction pipes were analyzed. The results show that the erosion depth of contraction areas increases by sand ratios, and the erosion depth increment decreases and approaches the maximum during the same period when the sand ratio is over 40%. The erosion depth of contraction area decreases with the viscosity increments and the influences of fluid viscosity on contraction area outer margin are bigger than inner edge.

Key words: erosion, two-phase flow, sand collision, computational fluid dynamics and discrete element method(CFD-DEM)

中图分类号:

TE35
TB126

姚利明1;刘巨保1;张宏岩2;张晓川2;岳欠杯1. 缩径管内两相流砂粒碰撞和冲蚀特性研究[J]. 中国机械工程.

YAO Liming1; LIU Jubao1;ZHANG Hongyan2;ZHANG Xiaochuan2;YUE Qianbei1. Study on Sand Collisions and Erosion Characteristics of Two Phase Flow in Contraction Pipes[J]. China Mechanical Engineering.

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