Experimental Study on the Effect of CO₂ on Phase Behavior Characteristics of Condensate Gas Reservoir

Table 1

Experimental conditions (original reservoir conditions).

Sample no.	Reservoir temperature (°C)	Reservoir pressure (MPa)	Gas-oil ratio (m^3/m^3)	CO2 content (mol%)
1	113.6	31.08	1715	41.554
2	The sample was prepared by adding a certain proportion of pure CO2 to condensate gas with CO2 content of 41.554% in the laboratory, and the CO2 content of the compound sample was 51.611 mol%
3	The sample was prepared by adding a certain proportion of pure CH4 to condensate gas with CO2 content of 41.554% in the laboratory, and the CO2 content of the compound sample was 24.011 mol%