SUCKER-ROD DEEP-WELL PUMPING UNIT Russian patent published in 2004 - IPC

FIELD: mechanical engineering; oil producing industry. SUBSTANCE: proposed sucker-rod deep-well pumping unit contains base, frame, engine, reduction gear, post, cable, wellhead equipment and sucker rod. Pump is furnished with mechanism converting rotation into reciprocating motion consisting of gear wheels and sprockets rigidly secured on shaft with tenons arranged for displacement in closed slots of slider with cogs, rocker, chain, frame with longitudinal guides of block located on post. Cable passed over block is coupled with slider and counterweight. EFFECT: improved reliability, simplified design, reduced overall dimensions and mass. 2 dwg