Experiment and Simulation Study on the Special Phase Behavior of Huachang Near-Critical Condensate Gas Reservoir Fluid

Table 10

Calculated composition of the remaining condensate oil under different depletion pressures.

Component/(mol%)	24.48/(MPa)	22.00/(MPa)	20.00/(MPa)	17.00/(MPa)	14.00/(MPa)	11.00/(MPa)	8.00/(MPa)	5.00/(MPa)
CO2	/	0.08	0.08	0.08	0.08	0.08	0.08	0.08
N2	/	0.00	0.00	0.00	0.00	0.00	0.00	0.00
CH4	/	0.38	0.38	0.38	0.37	0.37	0.36	0.35
C2H6	/	0.44	0.44	0.44	0.45	0.46	0.47	0.48
C3H8	/	0.87	0.88	0.90	0.92	0.96	1.02	1.11
iC4H10	/	0.39	0.39	0.40	0.41	0.44	0.48	0.53
nC4H10	/	0.87	0.88	0.91	0.95	1.01	1.10	1.25
iC5H12	/	1.49	1.50	1.54	1.61	1.72	1.87	2.08
nC5H12	/	1.70	1.71	1.76	1.83	1.94	2.09	2.29
C6H14	/	8.41	8.46	8.58	8.79	9.08	9.44	9.73
C7~C8	/	53.52	53.24	52.72	52.11	51.43	50.61	49.54
C9~C10	/	21.20	21.12	20.97	20.81	20.63	20.43	20.31
C11+	/	10.65	10.92	11.32	11.67	11.88	12.05	12.25

/: there is no remaining condensate oil, because the calculated saturation pressure is 24.47 MPa and the measured saturation pressure is 24.48 MPa.