在直井偏磨力学分析的基础上 ,从宏观上探讨了管杆偏磨的直接成因 ;提出了偏磨的 2种形式 ,并给出了可以判别抽油杆偏磨的 4种型态和油管偏磨的 2种型态 ;总结出了应针对不同的偏磨因素 ,根据它们的作用工况、生产参数和井眼轨迹系统地解决偏磨问题的思想 On the basis of mechanical analysis of vertical eccentric wear, the direct cause of eccentric wear of the pipe rod was discussed macroscopically. Two kinds of partial wear were put forward. Four types of oil pipe partial wear and oil pipe Partial wear of the two types; summed up should be based on different eccentric wear factors, according to their role conditions, production parameters and well trajectory system to solve the problem of partial wear thinking