STAND OF THE CHAIN DRIVE OF A DOWNHOLE ROD PUMP Russian patent published in 2022 - IPC F04B47/02 F04B51/00 

FIELD: measuring equipment.

SUBSTANCE: invention relates to research in the field of petroleum production; in particular, to laboratory measuring equipment for modelling the processes of operation of downhole rod pump units. Stand of the chain drive of a downhole rod pump comprises a frame; an electric engine 2 with a reducer gearbox 3, installed on the frame 1; and a mechanism for converting the rotational motion into reciprocating motion. Said mechanism consists of a driving and a driven sprockets enclosed in a pull chain with a tensioning apparatus 9, linked with a carriage, connected with the counterweight 11 configured to move along the guides 12, and transmitting further movement using a flexible link 13 through the pulleys onto the load. The load simulates a rod string with an additional counterweight 16 in the fastening assembly of the flexible link between the pulleys in order to ensure constant friction during the operation of the stand.

EFFECT: possibility of researching the operation of the chain drive of a downhole rod pump in a laboratory setting.

2 cl, 2 dwg