DRIVE FOR DEEP-WELL SUCKED-ROD PUMPING UNIT (VERSIONS) Russian patent published in 2006 - IPC F04B47/02 

FIELD: oil producing industry.

SUBSTANCE: invention relates to sucker-rod pumping units intended for lifting liquid from well. Proposed drive for deep-well sucker-rod pumping unit has engine coupled either directly or through reduction gear with mechanism containing two connecting rods, one planet pinion and two central wheels. At least one plane pinion and one central wheels or two central wheels are coupled with connecting rods. Other ends of connecting rods are coupled with deep-well sucker-rod unit through balance beam, or directly with sucker rods. Engine can be coupled, either directly or through reduction gear, with mechanism containing two connecting rods, at least one planet pinion and two central wheels, at least one planet pinion and one of central wheels or two central wheels are coupled with connecting rods, other ends of connecting rods being fitted in/on guide. One of central wheels or planet pinion is connected to balance beam through crank and connecting rod. Guide for connecting rods of mechanism can be made adjustable in tilting. Or guide for connecting rods of mechanism can be made with curvature and adjustable in tilting. Invention provides increase of deep-well pump capacity owing to reduction of time for preparatory downwards travel of sucker rods, reduces power, torque of drive motor and load on sucker rods owing to increase of upwards travel of sucker rods.

EFFECT: increased capacity of deep-well sucker-rod pump.

4 cl, 18 dwg