METHOD OF PREPARING OIL GAS Russian patent published in 2008 - IPC F17D1/02 F25J3/06 

FIELD: oil industry.

SUBSTANCE: method comprises compressing and cooling oil gas, separating cooled oil gas into dried gas and liquefied hydrocarbons, compressing the oil gas without liquid droplets and admixtures by means of a compressor, cooling the compressed gas in air heat exchanger and cooling heat exchanger, supplying the cooled oil gas to the first gas separator for removing the condensate produced during its cooling, supplying oil gas from the first separator to the second heat exchanger for cooling and, then, to the second gas separator after removing condensate, supplying oil gas to the evaporator-separator for further cooling, supplying oil gas from the evaporator-separator to the third gas separator, removing condensate in the third separator, expanding the oil gas in the vortex pipe where it is separated into hot and cold flows, mixing the hot and cold oil gas flows and directing the mixture to the fourth gas separator where the condensate is removed from the gas, directing the dried gas to the second heat exchanger for cooling downstream of the first gas separator and simultaneous heating of the gas, and supplying the oil gas to the main pipeline.

EFFECT: improved oil gas quality and enhanced environmental protection.

9 cl, 5 dwg