SHOCK ABSORBER OF ELECTRIC CENTRIFUGAL PUMP IN WELL Russian patent published in 2012 - IPC F04D13/10 F04D29/66 

FIELD: oil and gas industry.

SUBSTANCE: shock absorber includes housing with annular sectors from elastic material, which are made in the form of a set of split plates. In plates there arranged are radial slots on external surfaces, hydraulic connection channels for flow of working medium, open and closed slots for location of electric cable of pump and annular turnings on end surfaces of plates, which interact with annular bores on end surfaces of spacer split rings located between plates on external surface of connection head of pump modular section. Splits of plates with closed slots are offset at an angle relative to each other, and external surfaces of plates interact in turn with certain design tightness with internal surface of production string.

EFFECT: enlarging functional capabilities when using shock absorber in oil and water intake wells at high working medium temperature.

5 dwg