FIELD: machine building.
SUBSTANCE: invention relates to valve used in simultaneous-separate operation of multi-bed wells. Proposed valve comprises top, mid and bottom bodies. Top body is coupled with coupling via branch pipe. Said top, mid and bottom bodies are locked by lock rings. Piston one part is arranged inside top body. Top body inner part is divided by said piston into cavities. Piston is pressed by spring. Said cavities are communicated with unions via channels. Piston other side is located in sleeve with radial through bores. Mid body has through lengthwise channels. Total area of cross-sections of said through lengthwise channels in mid body is smaller than that of the piston central channel. Besides, mid body has the main channel.
EFFECT: better tightness and reliability, flawless operation at the well with formation fluid containing mechanical impurities.
5 cl, 5 dwg
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