FIELD: oil and gas industry.
SUBSTANCE: invention relates to the methods of processing low-pressure gases and condensates (liquid hydrocarbons) formed during the gas transportation, and can be used in the oil and gas industry. The gas is compressed at the first stage, together with the deethanization gas, the mixture of technical propane and butane, and cooled under the condition of refluxing with obtaining a condensate and the compressed gas, which is dewatered and purified, cooled and at the second stage compressed together with the deethanization gas of the propane fraction, and cooled in the conditions of refluxing by a low temperature separation gas, with obtaining the condensate and the compressed gas. The latter is reduced and separated, with obtaining a low-temperature separation gas which is heated, compressed and extracted as a sales gas, and the condensate which is deethanized with obtaining the deetanization gas and the propane fraction. Liquid hydrocarbons are deethanized together with the condensate of the first stage and the heated condensate of the second stage, with obtaining a deethanization gas and the mixture of technical propane and butane.
EFFECT: invention provides increasing the extraction degree of hydrocarbons C3+, the expansion of production range, co-processing of low-pressure hydrocarbon gases and liquid hydrocarbons.
5 cl, 1 dwg
