Optimization of operating conditions of CO2-enhanced gas recovery and carbon sequestration

Table 1 Natural gas composition

Compounds	Compounds formula	mol	%mol	Mr
Methane	CH₄	94.36	0.9436	16.043
Ethane	C₂H₆	2.37	0.0237	30.07
Propane	C₃H₈	0.15	0.0015	44.097
Iso-butane	C₄H₁₀	0.017	0.00017	58.124
N-Butane	C₄H₁₀	0.022	0.00022	58.124
Iso-pentane	C₅H₁₂	0.009	0.00009	72.151
Hexane+	C₆H₁₄	0.015	0.00015	86.178
Helium	He	0.087	0.00087	4.003
Hydrogen	H₂	0.01	0.0001	2.016
Nitrogen	N₂	2.92	0.0292	28.014
Carbon dioxide	CO₂	0.04	0.0004	44.009