Novel compound oil production equipment of small displacement

The utility model discloses a reduce equipment length, the equipment that can effectively prevent is by the novel compound oil production equipment of small displacement of calorie phenomenon, and the screw pump is including screw pump stator, screw pump rotor, screw pump shell, inlet port, oil -out, screw pump shell and screw pump stator fixed connection, screw pump rotor and screw pump stator rotary joint, the motor posts magnetically hard material's electric motor rotor and motor stator rotary joint including motor stator, motor housing, electric motor rotor, table, and in the motor stator disposed on motor housing, motor housing comprises upper end cover, bottom end cover, casing, the screw pump shell is electric motor rotor, and upper end cover, bottom end cover and screw pump shell link together through mechanical seal, and motor stator holds up positive axial to hold through at least two to be connected with the screw pump stator, and connector lower extreme and casing lower extreme fixed connection are connected with the connector upper end to the screw pump rotor that is located the bottom end cover below.