AUTONOMOUS INFLOW REGULATOR Russian patent published in 2021 - IPC E21B34/08 E21B43/12 

FIELD: oil production.

SUBSTANCE: invention relates to equipment used for oil production, specifically to systems for regulating the flow of liquid into the casing pipe coming from outside the casing pipe, for example, from a productive formation. An autonomous inflow regulator installed in the well on the side surface of the pipe between the pipe and annular space contains a housing with holes in the bottom located along the edge of the inner cavity of the housing, a cover with one hole in the center and a movable disk that performs the functions of a valve. The movable disk is installed with a gap relative to the cover and the bottom inside the housing on the projections of the disk axial orientation. A threaded hole is made in the center of the bottom of the housing, in which a threaded insert with axial projections is installed with the possibility of axial movement to adjust the gap between the disc and the housing.

EFFECT: increased efficiency of valve closing with decreased viscosity and increased rate of produced passage through it.

7 cl, 6 dwg