水驱抽油机井杆管偏磨力学机理研究

Study on the mechanism of leaning attrition phenomenon of the rod for waterflooding pumping units well

垂直井中抽油杆柱产生偏磨现象是下冲程抽油杆柱在油管内产生屈曲变形引起的,文章分析了引起抽油杆柱偏磨的力学原因,编制了抽油杆柱受力计算程序,并用于实际计算。

The leaning attrition phenomenon of pumping unit's rod and tube in vertical well is coming from the distortion flexion of the rod at down stroke in the tube. Based on the mechanics factor analysis we compiled the programs to compute the stresses of the pumping rod and tube and then applied them in practical calculation. 