FIELD: mining.
SUBSTANCE: group of inventions relates to downhole flow control device, downhole system. Downhole flow control device is designed to control flow of fluid medium from borehole to downhole tubular structure and/or from well tubular structure to borehole, comprises basic tubular element with longitudinal axis and made with possibility of installation as part of well tubular structure. Base tubular element has the first hole, the first coupling located inside the base tubular element. First coupling has the first part of the coupling and the second part of the coupling with the second hole, and the first coupling is made with possibility of sliding along the longitudinal axis for at least partial alignment of the first hole with the second opening. There is a second coupling located at least partially between the second part of the coupling and the base tubular element. Provided is engaging element intended for engagement with recess of second part of coupling in first position and for release from engagement with recess of second part of coupling in second position.
EFFECT: technical result is reduced sediments and debris deposition probability.
20 cl, 7 dwg
