低产油田螺杆泵机动间歇采油技术及设备

Progressive cavity pump mobile intermittent recovery technique for stripper field.

新开发的螺杆泵机动间歇采油技术及设备的主要特征是用拖拉机做动力源，用双万向联轴器把动力传递给驱动头，由驱动头带动抽油杆柱旋转，进而驱动螺杆泵旋转抽油。通过螺旋传动可将转子提出或送入泵筒，使定、转子脱离接触，以防两者吸附在一起，造成下次启动时发生事故。此项采油技术省去了管网、电网以及热水伴油输送系统，使投资和运行费用比常规抽油机系统降低５０％以上，特别适合在低产。

The feature of the progressive cavity pump mobile intermittent recovery technique is using a tractor as power unit,adopting a double universal coupling transmitting the power to a drive head to make the rod string rotate and thereby drive the progressive cavity pump for pumping.The rotor can be lifted out of or put into the pump barrel to make it separate from the stator to avoid starting accident next time.Because the electric network and hot piping system are not required,the investment and operation cost of this technique is reduced by over 50% against the conventional pumping unit ststem.The technique is particularly suited for the recovery of the stripper and low permeability oil fields.