FIELD: soil or rock drilling; mining.
SUBSTANCE: group of inventions relates to mining and can be used for flow control in well. Device for installation in a borehole in an underground section comprises: a substantially tubular wall of the housing, which separates the inner part of the downhole device from its outer part extending radially outward from said inner part and forming an annular space when installing in the wellbore together with the above wellbore; and a jet diode, which is in hydraulic communication between the inner part of the downhole device and the external part of the downhole device through the housing wall. Said jet diode comprises inner surface forming inner chamber and including lateral perimeter surface and opposite end surfaces; a first hole made in one of said end surfaces; and a second opening made in said inner surface at a distance from said first opening. Also disclosed is a second embodiment of a downhole device for installation in a borehole in an underground section, a flow control device and a method for independent direction of fluid flow into an underground wellbore.
EFFECT: technical result consists in improvement of well flow control efficiency.
27 cl, 33 dwg
