油田开发进入二次采油,特别是三次采油之后,采出井中机采井所占比例逐渐增加,已经成为主要采油设备,而机采井设备又以抽油机和螺杆泵为主。抽油机和螺杆泵在现场运行过程中各有优缺点,通过分析二者的优缺点及运行成本,根据现场情况,确定采用抽油机或螺杆泵哪种机采方式更为经济,为现场设备选型提供指导。 Oilfield development into the secondary oil recovery, especially after the third oil recovery, mining wells in the proportion of wells increased gradually, has become the major oil extraction equipment, and machine-based mining equipment and pumping units and screw-based. The pumping unit and the screw pump have their own advantages and disadvantages in the operation of the site. By analyzing the advantages and disadvantages of both and the operating cost, it is more economical to determine which type of pumping unit or screw pump is adopted for the site based on the site conditions Equipment selection to provide guidance.