DOWNHOLE TWO-POSITION VALVE Russian patent published in 2025 - IPC E21B34/10 E21B43/12 F16K17/06 

FIELD: oil industry.

SUBSTANCE: invention relates to the oil industry, in particular to valve devices for wells equipped with borehole electric centrifugal pumps, and can be used in oil production, flushing, killing and development of oil and gas producing wells. Downhole two-position valve consists of a body, a movable bushing with a pressing spring in the lower part, a shut-off assembly of a ball and a saddle. Saddle of the shut-off unit is tightly connected to the movable bushing, the through hole of the bushing is a continuation of the saddle hole. Shut-off assembly contains a cage fixed to the body in the form of an inverted hollow truncated cone with through holes in the upper part and one hole in the lower part, the diameter of which exceeds the diameter of the ball. Movable bushing comprises a cylindrical protrusion with a sealing ring between the locking unit cage and the movable bushing.

EFFECT: increasing throughput capacity of the two-position check valve with simultaneous increase in the resource of efficient operation due to reduction of the number of component parts of the device and simplification of their structural connection with each other.

1 cl, 2 dwg