BEAMLESS DRIVE OF BOTTOM-HOLE OIL PUMP Russian patent published in 2017 - IPC F04B47/02 

FIELD: oil and gas industry.

SUBSTANCE: beamless drive of bottom-hole oil pump comprises a support frame mounted on the base plates, a motor, a system of rotation transformation into reciprocating motion and a power circuit connecting the drive to the pump. A system of rotation transformation into reciprocating motion is screw-gears designed as parallel counter-rotating screws provided with nuts. Rolls are attached to the nuts and there is a power circuit between them. The screws are interconnected and coupled with the drive motor via a gear. The screw-gears are designed as roll-screw pairs.

EFFECT: simplified design, increased reliability, extended range of the device control.

3 cl, 1 dwg