ADJUSTABLE FLOW LIMITER FOR USE IN UNDERGROUND WELL Russian patent published in 2015 - IPC E21B43/12 E21B34/06 

FIELD: oil and gas industry.

SUBSTANCE: suggested group of inventions relates to mining, and can be used to adjust flow in the well. The system contains through flow chamber, through which the fluid mixture flows, at that this chamber has at least two inputs, actuator and fluid flow switch. At that flow resistance varies depending on proportions of the fluid mixture flowing to the specified chamber as per the appropriate input channels. By the specified actuator the flow of the specified fluid mixture can deviate by direction towards one of the specified input channels. Method of adjustment of the flow resistance in well includes change of orientation of the deviation shutter relatively to the channel through which the fluid mixture flows, as result the flow of the specified fluid mixture deviates towards one of the input channels of the through chamber. At that the specified chamber ensures the flow resistance varying depending on proportions of the fluid mixture flowing to the specified chamber via the appropriate input channels.

EFFECT: increased efficiency of the flow adjustment in the well.

43 cl, 13 dwg