CONTROL SYSTEM FOR SURFACE-CONTROLLED BOTTOM-HOLE SAFETY VALVE Russian patent published in 2015 - IPC E21B34/10 F16K17/36 

FIELD: mining.

SUBSTANCE: group of inventions relates to mining industry and can be used in a bottom-hole valve system. A valve includes a body, a channel shutoff module, a mechanical lever mechanism, a drive module and a control unit. The body is provided with a channel for fluid medium flowing when the channel shutoff module is in an open position. When the channel shutoff module is in a closed position, the channel shutoff module prevents passage of fluid medium through the channel. The mechanical lever mechanism is functionally connected to the channel shutoff module and to the drive module. The main control unit determines a force applied to the mechanical lever mechanism based on the current operating state of the valve and makes the drive module apply the specified force to the mechanical lever mechanism. As a result, the mechanical lever mechanism brings the channel shutoff module into action.

EFFECT: improvement of efficiency of a bottom-hole valve system.

20 cl, 7 dwg