I. Overview

When the screw pump is used for pumping oil, a ground drive device shall drive the sucker rod to rotate, the sucker rod shall further drive the rotor of the screw pump to rotate, since the screw thread of the tubing and the screw thread of the sucker rod that drives the rotor of the screw pump to run rotate in the same direction, when pumping oil, the sucker rod drives the rotor of the screw pump to rotate, the friction torque between the rotor and the stator of the screw pump is transformed to the torque for disassembling the oil pipe, the torque is easy to cause self-disassembly or tripping of the screw thread of the oil pipe, so that the tubing shall fall into the well, it will cause enormous losses, and in order to avoid downhole accidents, our company produces the special pipe (anchoring pipes special for the screw pump) to prevent tripping.

II. Technical Parameters:

Type: Φ88.9×9600

Connecting thread: 3 1/2 TBG×3 1/2TBG