FIELD: oil production, particularly systems and methods for well section plugging in reservoir operation.
SUBSTANCE: device comprises control valve body provided with anchoring device for selective control valve body seating in packer inside well bore and fluid flow orifice made in valve body. The device also has the first sliding bush installed so that it may move between opened position, in which fluid flow through said orifice is not blocked with said bush, and closed position, in which fluid flow is closed with said bush. The second sliding bush is also provided. The second sliding bush may move between opened position, where said bush does not block fluid flow through said orifice, and closed position, where fluid flow is closed with said bush.
EFFECT: increased well plugging reliability, elimination of fluid flow passage between hole annuity of upper section of well completion equipment and central channel of lower section when fluid flow passage through lower section is closed.
20 cl, 23 dwg
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