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

Table 9

Calculated composition of the remaining fluid 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	5.23	5.21	5.19	5.12	5.00	4.80	4.46	3.85
N2	0.64	0.64	0.63	0.61	0.59	0.55	0.49	0.41
CH4	57.07	56.77	56.35	55.29	53.54	50.81	46.51	39.27
C2H6	11.73	11.72	11.70	11.64	11.53	11.3	10.82	9.76
C3H8	6.22	6.23	6.25	6.3	6.36	6.43	6.45	6.26
iC4H10	1.07	1.07	1.08	1.10	1.13	1.16	1.21	1.25
nC4H10	1.76	1.77	1.78	1.82	1.88	1.97	2.09	2.22
iC5H12	1.21	1.22	1.23	1.27	1.34	1.44	1.58	1.8
nC5H12	1.09	1.10	1.11	1.15	1.21	1.31	1.46	1.69
C6H14	2.58	2.61	2.66	2.77	2.98	3.30	3.82	4.70
C7~C8	7.74	7.87	8.06	8.57	9.45	10.89	13.33	17.8
C9~C10	2.49	2.54	2.64	2.85	3.23	3.85	4.90	6.88
C11+	1.18	1.25	1.32	1.51	1.76	2.19	2.88	4.11