提高抽油泵柱塞-缸套摩擦副表面的耐磨寿命,是深井泵采油法中存在的主要问题之一。众所周知,抽油泵在井下工作时影响其柱塞-缸套摩擦副磨损强度的因素是柱塞与缸套的不同心度。按照OCT2602-1424-76《有杆抽油泵》生产的各种抽油泵的柱塞长度均在1200毫米以上,且规定尺寸严格,因此,其摩擦副属于《刚性》型。此外,在柱塞向下运动 It is one of the main problems existing in deep well pump oil production to improve the wear life of friction surface of the plunger. As is known to all, the factor that affects the wear strength of the plunger-cylinder friction pair when the pump operates downhole is the eccentricity between the plunger and the cylinder liner. In accordance with OCT2602-1424-76 “sucker rod pump” production of various pumping plunger length are more than 1200 mm, and the provisions of strict size, therefore, the friction pair are “rigid” type. In addition, the plunger moves downward