FIELD: technological processes; oil and gas industry.
SUBSTANCE: invention relates to methods of gas preparation by low-temperature condensation and can be used in gas industry for field preparation of well products of gas condensate deposits. Disclosed is an apparatus, the first version of which includes an input separation unit, a dephlegmator, a debutanizer, an ejector and reducing devices. Second version of installation additionally includes separator and reducing device. In operation of the plant according to version 1, by means of the ejector, the debutanisation gas is compressed by means of the ejector, the obtained mixture is separated in the input separation unit into water condensate, hydrocarbon condensate and gas, which is fed into a dephlegmator, where it is cooled in dephlegmation conditions. Reflux gas is removed from the top of the dephlegmator, reduced, heated in a dephlegmator and removed. Condensate is condensed from bottom of dephlegmator, reduced and supplied to debutaniser together with reduced hydrocarbon condensate. Debutanisation gas is discharged from the top of the debutanizer, and a stable condensate is discharged from the bottom. Operation of plant according to version 2 is characterized by that hydrocarbon condensate after reduction is supplied to separator, from top of which separation gas is supplied to input separation gas line, and residue of separation is supplied to debutanizer after reduction.
EFFECT: technical result is waste-free preparation of well products.
5 cl, 2 dwg
