FIELD: gas industry.
SUBSTANCE: invention relates to gas treatment methods by low-temperature condensation and can be used in gas industry for ethane-butane fraction extraction under field conditions from gas condensate deposits well products. According to proposed method sour gas is separated at first stage with production of water condensate, which is removed, hydrocarbon condensate and gas, which are dried, dried gas is cooled with partially heated gas of third stage, reduced and separated into second stage under conditions of partial condensation due to cooling by third stage gas with production of condensate and gas, which are reduced and separated at third stage together with demethanization gas with production of gas, which is after heating removed as marketable gas, and condensate, which are demethanized together with first stage reduced dry condensate and second stage condensate with production of gas and C2+ fraction.
EFFECT: technical result is elimination of hydrate formation inhibitor consumption and higher degree of ethane extraction.
1 cl, 1 dwg
