DOWNHOLE ELECTRIC VALVE Russian patent published in 2023 - IPC E21B34/06 E21B43/12 G05D7/06 

FIELD: oil and gas industry.

SUBSTANCE: electric valve for installation in a well as part of well pipes is configured to control the fluid flow between the space inside the pipes and the space behind the pipes at the location of the valve. The electric valve contains a hollow cylindrical body with holes, a sleeve located inside the body configured to move between an open position and a closed position according to a signal received via a communication channel. The electric motor is located in a sealed housing in the internal space of the valve under the casing. The said space is filled with hydraulic fluid, the solenoid valve body has a through hole with a means installed in it for compensating the external casing pressure and the pressure of hydraulic fluid. The solenoid valve body has an additional through channel located along the valve axis while maintaining tightness of the internal compartments of the solenoid valve.

EFFECT: improved reliability due to protection of transit electrical and hydraulic lines against damage during hoisting operations.

4 cl, 5 dwg