FIELD: oil and gas industry.
SUBSTANCE: group of inventions relates to mining and may be used to control a flow of a fluid medium in an underground well. Control of the fluid medium flow is carried out autonomously under the variation of a parameter of the fluid medium flow, for instance, density or viscosity. In one version of realisation the mechanism of flow divergence may move between the open and closed positions under the action of a variation of density of the fluid medium and perform the function of limitation of the fluid medium passage via an inlet of an assembled valve. This mechanism of flow divergence may rotate on the axis, rotate or otherwise move under the varied density of the fluid medium. In another version of realisation the flow divergence mechanism performs the function of control of the fluid medium flows ratio via two inlets of the valve. This ratio of flows is used to act at the valve control element, which limits the passage of the fluid medium via the valve. In another version of realisation the flow divergence mechanism moves under the action of variation in the fluid medium, thus causing the variation of the fluid medium flow scheme in the pipe section, and such variation of the flow scheme manages the operation of the assembled valve.
EFFECT: increased efficiency of fluid medium flow management.
49 cl, 28 dwg
