螺杆泵井抽油杆柱扶正器安放位置设计方法

针对部分学者对抽油杆柱扶正器安放位置优化设计方法大多只考虑某一个影响因素而不能从根本上解决杆管偏磨问题的现状,从井眼曲率、抽油杆柱旋曲、扶正器与杆管柱的间隙、转动惯性等因素入手,采用材料力学中的挠曲线方程和有限元法对杆柱运动状态进行了分析,给出了抽油杆柱扶正器位置的设计方法,从理论上解决了杆管偏磨问题。

Integrated Design Method of Centralizer Installation Placement Used in Progressive Cavity Pump Rods

Progressive cavity pump production systems driven by ground motors are increasingly used in oil fields, with which there is an increasingly serious problem that eccentric wear happens between the rods and the tubes of progressive cavity pumps. As a result, oil fields production is restricted. The movement of the rods is completely analyzed with deflection equations in Mechan ics of Materials and Finite element method from kinds of factors, such as borehole curvature, pump rod angulation, the interspace between the centralizer and the pump tube, rotary motion inertance and so on. According to the analysis, the installation placement can be properly designed which can theoretically resolve this problem.