BYPASS SYSTEM OF PUMPING UNIT Russian patent published in 2018 - IPC E21B47/06 

FIELD: oil and gas industry; mining.

SUBSTANCE: invention relates to oil submersible equipment and can be used to lift a borehole fluid and measure well parameters without extracting the pumping unit. Bypass system contains a Y-block with a plug. To the first output of the block, a string of bypass pipes is suspended through a branch pipe, a connector and a cutoff clutch; to the second – a pumping unit containing an electric motor with a support branch pipe is connected through a branch pipe, a cutoff clutch and a balancing valve. Bypass pipe string and pumping unit are interconnected by protictolizers and a seat fixing the support branch pipe. Connector is made telescopic and equipped with a locking element in two directions. On the top of the Y-block there is a landing nipple, intended for installation of a pressure test plug or an insulating sleeve. Bypass pipes along the whole pumping unit are made solid and connected by a gas-tight inserted joint.

EFFECT: invention is aimed at improving the reliability and safety of operation of the pumping unit, including through the possibility of carrying out pressure testing of pipes, at increasing the load-carrying capacity of the bypass system, as well as at ensuring the possibility of the free-flow oil production method.

1 cl, 4 dwg