DRIVE OF WELL SUCKER ROD PUMP Russian patent published in 2009 - IPC F04B47/02 

FIELD: oil and gas industry.

SUBSTANCE: drive contains frame assembled on base and engine placed there on, two coupled mechanisms, converting rotating movements into reciprocating; these mechanisms are connected with carriage, containing two pairs of pulleys, enveloped with flexible continuous links with breaking devices, operating in antiphase and connected with control mechanism, interacting with arresters. The carriage is periodically connected either to ascending, or to descending branches of the continuous flexible link. Also there is provided a required length of run of the column of rods. The moments of switching are determined by the position of the arresters on posts of the drive. A bracket is made self-orientating.

EFFECT: invention allows changing length of run of rods column, also it reduces power consumption for friction and at overcoming bending moments occurring from rods warp, it also increases reliability of drive.

6 cl, 3 dwg