SELF-ALIGNING VALVE OF BOTTOM HOLE PUMP Russian patent published in 2017 - IPC F16K15/04 F04B47/00 F04B53/10 

FIELD: oil and gas industry.

SUBSTANCE: self-aligning valve of bottom hole pump comprises a housing, a centralizer with throughway openings, a sloping shoot with flushing ports, a saddle and a sphere. The sloping shoot made lightweight is eccentrically fixed to one end of the self-aligning valve central axis. A massive cargo strapped by nut and fixed by locknut is mounted at the other end in a plane of the sloping shoot eccentricity. The inner surface of the sloping shoot is made concave with curvature radius more than sphere radius by optimal gap value between the saddle and the sphere in the open valve state. The concave surface of the sloping shoot is made in the form of a valve with longitudinal runners and flushing channels between them.

EFFECT: improved reliability of valve operation in horizontal wells.

2 dwg