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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。通过向空心杆内孔下入整体电缆，经终端器使电缆和空心杆内壁构成回路，利用交流电的集肤效应原理使杆壁发热，进而加热油管内原油，达到防止油管内壁结蜡，增加原油流动性，降低杆柱承受的摩擦扭矩及防止杆柱断脱之目的。试验和应用情况证明，这种装置具有加热段长、加热均匀和加热功率可调等特点，特别适合于开采高粘、高凝和高含蜡原油。
The newly developed electric heating hollow rod drive screw pump device using hollow rod drive screw pump, torsion load capacity than the same cross-sectional solid rod increased nearly 1 times. Through the hollow rod into the overall hole under the cable through the terminal so that the cable and the hollow rod wall to form a loop, the use of AC skin effect principle so that rod wall heat, and then heating the tubing of crude oil, to prevent wax wall tubing to increase crude oil Fluidity, reduce friction torque suffered by the pole and to prevent the pole off. Tests and applications prove that this device has the characteristics of long heating section, uniform heating and adjustable heating power, and is particularly suitable for the production of high viscosity, high coagulation and high waxy crude oil.