FIELD: oil and gas industry.
SUBSTANCE: wellhead equipment for coal-methanol wells includes housing with channel for communication with cavity of tubing string. There are also two channels for communication with tubular annulus, valves and adjustable chokes. The channel contains channel for communication of water line with gas line additionally. The housing is equipped with threaded coupling with casing head and valves are equipped with pressure gages installed on them.
EFFECT: simplifying of operation and maintenance of coal-methanol wells, including low-temperature conditions, reducing specific amount of metal per structure.
1 cl, 1 dwg
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