Newly developed electric heating hollow rod drive screw pump system adopts hollow sucker rod to drive the screw pump.It has twice the antitorque capacity of the hollow rod with the same cross section.

• 新研制的电加热空心抽油杆驱动螺杆泵装置采用空心杆驱动螺杆泵，抗扭承载能力比相同横截面积的实心杆增大近1倍。