FIELD: oil industry.
SUBSTANCE: invention relates to oil industry and is intended for gas flow rate control during gas-lift operation. Device consists of hollow body with internal stepped bore in axial channel, in which core is installed, pressed by adapter. Core with eccentricity has conical channel with nozzle extending into cylindrical bore of hollow body made perpendicular to its axis. In the cylindrical bore there is a spindle with a tip in the form of a cam arranged inside the reflecting semi-ring enveloped on both sides by nuts. Cam can interact with reflecting semi-ring in extreme position. Nozzle is installed in cone channel of core at level of gap between reflecting semi-ring and external surface of cam in initial position. Spindle extends beyond hollow housing and is equipped with sealing and locking rings.
EFFECT: technical result consists in improvement of efficiency of controlled throttle.
1 cl, 3 dwg
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