GAS WELL PIPING Russian patent published in 2009 - IPC E21B43/00 E21B33/00 F17D1/04 

FIELD: mechanics.

SUBSTANCE: invention relates to mechanics and, particularly to service pipelines and may be used in primary production namely, for connecting wellhead equipment with gas or gas condensate gathering pipeline and metered supply of methanol to wellhead valves. Gas well piping consisting of valves, manifolds, flanges, inhibitor supply system, metering device, check valves includes connection unit to common cluster lines. In addition connection unit to common cluster lines, inhibitor supply system, metering devices, pipelines and manifolds are flange connected between each other by means of pins and washers. Connection unit to common cluster lines contains frame with welded manifolds being mounted on it, valves and check valves fixed to the frame by couplers. The inhibitor supply system is implemented with a frame. All instrumentation and supply pipeline are installed on the above frame. Pipelines include shutoff lines, gas extraction lines and methanol supply lines. The construction of gas well piping as disclosed by the invention allows for sequential installing and actuating common cluster gas collecting lines, producing stalk, supplying inhibitor and operating with each piped gas well as soon as it is ready, ensuring common cluster lines integrity.

EFFECT: avoidance of welds allows for facilitating and speeding up gas well piping installation and repair.

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