Product Information

Introduction of submersible direct drive screw pump technology：

The submersible direct-drive screw pump is a lifting technology that drives a downhole "submersible direct-drive motor" through a power cable, and the motor rotor directly drives the screw pump through a flexible shaft for oil recovery. It mainly consists of permanent magnet synchronous servo motor, protector, flexible shaft, screw pump, power cable, electric pump wellhead, control cabinet.

Motor protector function:

Seal the submersible motor to prevent well fluid from entering the motor. The protector can maintain the balance between the internal pressure of the motor and the pressure at the suction port. At the same time, when the motor is running, the lubricating oil in the motor expands due to the increase in temperature. There is enough space in the protector to store the oil that overflows due to expansion. Conversely, when the temperature of the lubricating oil decreases and shrinks, the oil in the protector can be returned to the motor for replenishment.

Motor protector features：

1 Provide motor oil expansion volume;
2 Pressure balance;
3 Isolate the well fluid, the protector plays the role of preventing the well fluid from entering the motor;
4 Bearing axial force;
5 Transmission torque.

Motor protector parameters: