FIELD: oil production, particularly well heads, setting-up thereof.
SUBSTANCE: wellhead equipment comprises multi-unit landing head with a number of casing pipes suspended to the head so that tubing-casing annuluses are created. Each tubing-casing annulus is closed with gate. Wellhead equipment includes production tree with kill, discharge and flare line. Each tubing-casing annulus has branch with pressure measuring device and shutoff gate. The branches are connected with each other through partitions and shutoff gates arranged therein. Upper partition is connected to flare line by means of connection pipe. Connection pipe has shutoff gate and safety valve arranged downstream of shutoff gate of connection pipe.
EFFECT: increased safety of well operation in the case of gas flow in tubing-casing annulus.
3 cl, 3 dwg
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