FIELD: gas and oil production.
SUBSTANCE: system is designed for implementation in borehole of well with several zones and consists of string in well borehole and of multitude of valves connected with string. Also, each of multitudes of valves has at least one orifice for communication between the string and one of multitude of well zones and a bush. The latter is actuated with a device between an open position when the said at least one orifice is opened and a closed position, when the said at least one orifice is closed. The actuating device has a head part and a shank end part. Also, the head part is of disk-shape or partially spherical structure with diametre slightly less, than internal diametre of pipes, while the shank end part has at least one rib or cavity positioned in essence perpendicular to the disk-shape or partially spherical structure.
EFFECT: raised efficiency due to implementation of lowering into well by one trip.
20 cl, 10 dwg
