抽油机是用在油层中天然能量不足而不能达到自喷时 ,作为带动抽油杆和抽油泵柱塞上 ,下往复运动而进行采油的动力设备。它广泛的应用于油田采油 ,在国民经济中发挥着重要的作用。国产抽油机已有几十年的发展历史。随着科技进步和石油工业的发展 ,抽油机不断改型 ,更新换代。抽 Pumping machine is used in the reservoir of natural energy can not be achieved when the spontaneous spray, as the drive rod and pumping pump plunger, the next reciprocating motion and oil recovery power equipment. It is widely used in oilfield production and plays an important role in the national economy. Domestic pumping unit has decades of development history. With the progress of science and technology and the development of oil industry, pumping units continue to be modified and upgraded. Pumping