抽油泵在井下正常工作时,柱塞与衬套每天相对运动高达万次以上,由于相对摩擦,使配合间隙逐渐增大,漏失量急剧增加,致使抽油泵失效,因此,需经常对泵进行修理。 起初,我们采用钢管机械加工后内孔再镀铬,更换衬套配件修复泵,因原材料紧缺,且价格上涨,不仅修复成本增加,而且难以满足油田生产的需要。针对上述情况,我们不懈地寻找 Pump downhole normal work, the plunger and bushing relative movement of up to 10,000 times a day, due to the relative friction, so that with the gap gradually increased, the drastic increase in leakage, resulting in failure of the pump, therefore, the need to often repair the pump . Initially, we used steel pipe machining and then chrome hole, replace the bushing accessories repair pump, due to shortage of raw materials, and the price increases, not only to increase repair costs, and difficult to meet the needs of oilfield production. In response to the above situation, we tirelessly looking for