FIELD: oil and gas industry.
SUBSTANCE: metal works and well-control equipment are demounted in the territory surrounding a flowing wellhead within the flame exposure. The blowout equipment and bypass pipe assembly constructed in the flowing wellhead. A wellhead tackle and rope slings are washed with a coolant fluid. The flame is carried off through the bypass pipe at a safe height, and the well is killed. The well-control equipment is demounted from the flowing wellhead by plasma arc cutting by means of guided and freely movable vertically and horizontally neck having a supported cutting burner with a graphite electrode at the end. The hole is mounted on a screening baffle plate placed on a travelling sledge movable both vertically and horizontally in relation to the flowing wellhead.
EFFECT: higher reliability, higher safety and acceleration of demounting the well-control equipment.
2 cl, 1 dwg
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