(This is the same gas mixture from the previous assignment. You should be able to copy and paste this table directly into Excel).
2) A wet gas has a composition as given in Table 2. Determine the value of the z-factor for this gas at reservoir conditions of 5,709 psig and 293°F.
Table 1 Gas mixture composition.
Component
Mole Fraction yj
Molecular Weight Mj
Methane
C1
0.870
16.04
Ethane
C2
0.049
30.07
Propane
C3
0.036
44.10
n-Butane
n-C4
0.025
58.12
i-Butane
i-C4
0.020
58.12
Total
1.000
Table 2
Component
Mole Fraction
yj
Hydrogen Sulfide
H2S
0.0867
Carbon dioxide
CO2
0.014
Nitrogen
N2
0.0045
Methane
C1
0.7981
Ethane
C2
0.0528
Propane
C3
0.0171
n-Butane
n-C4
0.0055
i-Butane
i-C4
0.0053
n-Pentane
n-C5
0.0024
i-Pentane
i-C5
0.0019
Hexanes
C6
0.0024
Heptane plus
C7
0.0093
Total
1.0000
Properties of Heptanes plus
Specific gravity
0.759
Molecular weight
132
lb/lb mole