中文摘要：

以直径为0．1～0．6mm的石英砂为磨料，黏度为10mPa·8的原油为携砂液，在自制的冲蚀磨损试验装置上研究了含砂原油对石油防砂割缝筛管的冲蚀磨损性能，采用LW200—4CS数码倒置金相显微镜观测了筛管缝口表面的冲蚀磨损形貌；利用曲线拟合方法建立了割缝筛管冲蚀磨损率与原油流速、砂粒直径、砂粒浓度、冲蚀角之间关系的数学模型．结果表明：筛管的冲蚀磨损率随含砂原油流速的增加而成指数关系增加；开始时随着原油中所携带砂粒直径和浓度的增加，筛管的冲蚀磨损率增加，达到一定数值后砂粒直径和浓度再增加，割缝筛管的冲蚀磨损率反而降低；随着冲蚀角的增大，割缝筛管的冲蚀磨损率增加，在冲蚀角为90°时达到最大，这种现象不同于塑性材料的冲蚀磨损机理；所建立的数学模型与试验结果较吻合．

英文摘要：

The erosion wear behavior of crude oil containing sands on slotted screen liner was investigated using a erosion wear equipment. Quartz sands with diameter of 0. 1 - 0.6 mm were used as abrasives. Crude oil with viscosity of 10 mPa·s was used as sand carrier. The worn surface of the slot at the entrance was investigated by LW200 -4CS digital reversed metaltoseope. The mathematic model of the erosion rate of slotted screen liner as a function of crude oil flow velocity, sand particle diameter, sand concentration, and impact angle was established. The model is in good agreement with experimental results. The erosion rate of slotted screen liner increased with increasing flow velocity of crude oil. The erosion rate of slotted screen liner initially increased as sand particle diameter and sand concentration increased. It then decreased after sand particle diameter and sand concentration reached certain value. The erosion rate of slotted screen liner increased with increasing impact angle. At impact angle of 90°, the maximum erosion rate was obtianed. This behavior was different from the erosion wear mechanism of plastic material.