GARIPOV HYDRAULIC CONTROL Russian patent published in 2014 - IPC E21B34/10 E21B43/12 

FIELD: oil and gas industry.

SUBSTANCE: hydraulic control consists of a body, at least one bypass port and at least one inlet port, inside the body there is a device with a chamber of a variable or permanent volume, a control element connected to the device with the chamber of the variable or permanent volume, a hollow element made as per a monolithic or detachable design with the body, a separating element in the body made so that it separates hermetically the bypass port or ports from the inlet port or ports thus forming an inner chamber or an inner chamber and a bypass chamber inside. At that the inlet port or ports are placed in the inner chamber, a control element can be moved hermetically inside the separating element or in a space between the side wall of the body and the separating element with potential overlapping of the bypass port or ports.

EFFECT: improving operational efficiency of the hydraulic control.

10 cl, 10 dwg