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

Table 5

Matching results of dew point pressure, gas-oil ratio, and condensate oil density between the experimental data and calculated values.

Parameter	Experiment	Calculation	Relative error %
Sample 1 (CO2 content is 41.554 mol%)
Dew point pressure (MPa)	30.85	30.88	0.10
Gas-oil ratio (m^3/m^3)	1720	1764	2.56
Condensate oil density (0.1 MPa and 20°C) (kg/m^3)	0.7796	0.7817	0.27
Sample 2 (CO2 content is 51.611 mol%)
Dew point pressure (MPa)	29.77	29.56	0.71
Gas-oil ratio (m^3/m^3)	2179	2249	3.21
Condensate oil density (0.1 MPa and 20°C) (kg/m^3)	0.7804	0.7971	2.14
Sample 3 (CO2 content is 24.011 mol%)
Dew point pressure (MPa)	31.46	31.55	0.29
Gas-oil ratio (m^3/m^3)	1350	1364	1.04
Condensate oil density (0.1 MPa and 20°C) (kg/m^3)	0.7772	0.7785	0.17