FIELD: oil industry.
SUBSTANCE: group of inventions relates to a system and a method for control of a borehole fluid inflow. The system contains a tubing string. In this case, the tubing string is placed in a wellbore, wherein the tubing string contains the main pipe, a set of filter nodes located around the main pipe, and a set of inflow control devices located along the main pipe in interaction with the set of filter nodes for control of a fluid flow flowing into the inner part of the main pipe. In this case, each inflow control device contains a case, an outlet, and at least one inlet channel. The case defines a chamber having the first end, the second end, and a length, along which the cross-sectional area of the chamber decreases. Moreover, the chamber is conical. The outlet is located at the second end of the chamber. In this case, the outlet communicates with the inner part of the main pipe. At least one inlet channel communicates with the chamber. Moreover, at least one inlet channel has a cross-sectional size, which increases, when moving from the inlet of at least one inlet channel to the outlet of at least one inlet channel. In this case, at least one inlet channel is made with the possibility, in response to the fluid flow, of pumping the flow into the chamber near the first end of the chamber in such a way that a fluid flow is created inside the chamber, which is rotated and moved in the direction along the length of the chamber to the outlet.
EFFECT: increase in the efficiency of control of a borehole fluid inflow.
10 cl, 8 dwg
