DEVICE OF FLUID INFLOW CONTROL Russian patent published in 2019 - IPC E21B43/12 

FIELD: oil industry.

SUBSTANCE: invention relates to the oil industry and can be applied to control fluid production during the operation of oil reservoirs with zones of different permeability. Device is installed on the base pipe in the area of perforation holes between the filter elements and includes concentrically located elements, namely, a central symmetric stepped bushing located between the rows of perforations, fixedly mounted on the base pipe, stepped glasses-stops, located on both sides of the symmetrical stepped bushings on the other side of the rows of perforations, stepped bushes, mounted on a central symmetric stepped bushing and stepped cups-stops with the possibility of rotation. Symmetrically located cavities are formed between the fluid inflow control unit and the base pipe in the area of perforation holes, through holes are made on the end surface of stepped cups-stops along their axis, in the stepped sleeves there are end-through grooves, with the combination of which channels are formed for the passage of filtered fluid in the cavity.

EFFECT: optimal conditions for fluid production are created, labor-intensive manufacturing and assembly of the device is reduced.

8 cl, 8 dwg