PUMP UNIT BYPASS SYSTEM Russian patent published in 2014 - IPC F04B47/06 E21B17/06 

FIELD: oil and gas industry.

SUBSTANCE: invention is related to oil-submersible equipment and may be used for well fluid lifting and well parameters measurement without removal of the pump unit. The pump unit bypass system contains a Y-unit with a plug, and a string of bypass pipes is suspended to one output of the Y-unit by means of a cut-off clutch, connector and nozzles. The pump unit with a submersible pump and submersible motor equipped with a support tube is connected to the second output of the Y-unit through a cut-off clutch and a counterbalance valve. At that the string of bypass pipes and the pump unit are interconnected by protectolisers and a saddle. The connector is of disconnectable type; it consists of two symmetric parts with longitudinal hemicylindrical and prismatic caves. The connector parts are hinged at free ands from the side of the prismatic cave and screws between the caves for the purpose of additional fixture of the bypass pipe string and the pump unit due to cover of the prismatic caves by the walls of the pump unit. The bypass pipe is perforated at the level of the submersible motor.

EFFECT: simplification of assembly process of the pump unit bypass system, increase in thermal stability of the submersible motor and operational reliability of the whole pump unit.

2 dwg