FIELD: oil and gas industry.
SUBSTANCE: invention refers to gas industry, namely to methods of field processing of hydrocarbon gas for transportation in permafrost conditions, involving gas transfer from wells to separation process, injection of volatile hydrate formation inhibitor to the gas flow, cooling of the gas flow in recovery heat exchanger and gas expansion machine, low-temperature gas separation with further gas cooling in recovery heat exchanger. After low temperature separation, the gas is cooled in recovery heat exchanger of gas-liquid type where the liquid discharged from low temperature separator is used as coolant, and the gas is additionally cooled in evaporation heat exchanger with the help of external cooling cycle before transportation.
EFFECT: improved power efficiency of gas processing system, possible use of compressor aggregates of lower capacity in the system.
2 cl, 1 dwg
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