【摘要】 应用液体流动的对比实验，对筛管防砂效果以及流阻损失进行分析比较，确定出合理的缝形结构尺寸；采用计算机两级优化的设计方法，以最大单井产量和合理的出砂量为第一级目标函数，以单位长度最小经济造价为第二级目标函数，研制出了全新的组合窄缝筛管。在同等条件下，其流动阻力降低１０％～１２％，防砂效果提高１０％左右。各油田可根据其具体情况进行设计和制造。更多还原

【Abstract】 On the basis of analysing the slotted pipes available by means of the contrast experi-ments with liquid flow ,which aim at analysing and comparing the ability for different slottedpipes to prevent sand from flowing into them,and the pressure drop of liquid through them,we develop a optimum structure and size of the slotted pipe. Taking the maximum oil produc-tion and reasonable sand production as the first objective and,the lowest cost of the slottedpipe per meter as the second objective,we use two steps of computer optimized prograrn todesign a new type of composite slotted pipe. With the same condition,the pressure drawdownof liquid through the new type of pipe is 10%～20%lower than other types of slotted pipes,and sand control capacity increase by 10%。更多还原