【摘要】 试验测定了Ф２８ｍｍ组合抽油泵在不同预紧力矩、不同横向载荷作用下的横向变形及柱塞拉动的灵活性。经最小二乘法处理测试数据，获得了组合抽油泵的折算刚度计算式。为定向井、水平井应用组合抽油泵时确定能够通过的最大井眼造斜率及下行阻力等有关参数提供参考。更多还原

【Abstract】 The transverse deformation and the mobility of pluger movement of a composite subsurface pump are investigated under different pretightening momonts and transverse loads. After processing the test data by the least square method, an equation for calculating the converted rigidity of the pump is worked out, providing a reference for determining the maximum allowable hole inclination and the resistance against the pump on the down trip while applying the pump in directional and horizontal holes.更多还原