METHOD FOR PREPARATION OF GAS FROM OIL AND GAS CONDENSATE DEPOSITS FOR TRANSPORTATION AND PLANT FOR ITS IMPLEMENTATION Russian patent published in 2013 - IPC E21B43/34 

FIELD: oil and gas industry.

SUBSTANCE: method for preparation of gas-condensate mixture for transportation includes delivery of strata mixture to the first separation stage, cooling of separated gas, its delivery to the second separation stage. Cooling and expansion of gas separated at the second stage and its delivery to the third separation stage. Output of gas separated at the third stage to consumers or to further conversion. Splitting of condensate into two parts after the third stage; one part is delivered to further conversion while the second part is delivered to the first separation degree. The second part of condensate is delivered to the first separation stage by means of its mixing with strata mixture delivered to the first separation degree. Before delivery of the second part of condensate to the first separation degree it is heated up to required temperature. The plant for implementation of this method contains line of strata mixture delivery connected to separator of the first stage which gas output is connected through the first heat exchanger to output of separator of the second stage. Gas output of the second separator is connected through expansion device to input of separator of the third stage which condensate output is connected to condensate output line and line of condensate delivery to the first separation stage. According to invention line of condensate delivery to the first separation stage is connected to a mixer installed at the line of strata mixture delivery. The second heat exchanger is installed at the line of condensate delivery.

EFFECT: preventing paraffin crystallisation within whole process starting from separators of the first stage; excluding high capital costs for construction of large-sized equipment.

5 cl, 1 dwg