GROUP DRIVE OF SUCKER-ROD PUMPS Russian patent published in 1998 - IPC

FIELD: oil producing industry; cluster wells with sucker-rod pumps. SUBSTANCE: cable hanger fastening units are mounted directly on crank on common pin, for rotation around their axes. Adjusting rollers are installed on additional posts in plane of well axes. Counterweight is arranged on double-arm guide installed square to crank on end of reduction gear driven shaft opposite relative to place of crank mounting. EFFECT: enhanced kinematic and dynamic characteristics of pump drive owing to possibility of regulation of pump operation phases relative to each other. 3 cl, 1 dwg