METHOD FOR PREPARING NATURAL GAS AT THE FINAL STAGE OF DEVELOPMENT OF A GAS CONDENSATE FIELD Russian patent published in 2022 - IPC B01D53/14 F25J3/00 

FIELD: gas industry.

SUBSTANCE: invention relates to a method for preparing natural gas of gas condensate deposits, including three-stage low-temperature separation of gas from development boreholes, compression and cooling of the gas in a turbo expander unit, cooling of the gas in an air cooling apparatus, "gas-gas" and "gas-liquid" heat exchangers, a throttle valve, an ejector, separation of the separated and absorbed liquid by phases resulting in a water-methanol solution (WMS), gas hydrocarbon condensate, and degassing gases, ejecting of the resulting degassing gases, supply of the hydrocarbon condensate from the liquid separator, separated at the first separation stage, to the mass exchange part of the low-temperature absorber through the "liquid-liquid" heat exchanger, contact of the cooled gas and hydrocarbon condensate in the mass exchange part of the low-temperature absorber. The gas after the first stage of separation is therein compressed and cooled at a booster compressor station, the gas hydrocarbon condensate is supplied to the low-temperature absorber by means of pumps. If high-melting paraffins are deposited in the low-temperature absorber and the normal course of the mass exchange process is violated, the gas hydrocarbon condensate is temporarily supplied to the mass exchange part of the low-temperature absorber past the "liquid-liquid" heat exchanger, output from the first stage separator or by a pump from a buffer container whereto the gas hydrocarbon condensate is supplied from the first stage separator.

EFFECT: stable operation of development wells and pipelines of the in-field gas collection system, ensured high extraction of the gas condensate components from the prepared gas.

1 cl, 1 dwg