SUBMERSIBLE PLANT WITH FLEXIBLE CONNECTION Russian patent published in 2013 - IPC F04D13/10 F04D29/62 

FIELD: machine building.

SUBSTANCE: plant consists of submersible electric motor with hydroprotection, gas separator and sections of centrifugal (screw-type) pump interconnected by flexible sealed assemblies. Rotational moment from electric motor shaft to shafts of hydroprotection, gas separator, pump sections is transmitted by angular articulated couplings, in the cavity of which there is oil protected by sealed corrugated flexible diaphragm. Oil pressure in diaphragm cavity is removed through bypass valves. Interconnected plant assemblies represent flexible sealed structure.

EFFECT: plant operation for fluid extraction in deflected wells with well bore deflection more than two degrees per 10 metres and in horizontal wells that are drilled recently.

2 dwg