The program will ask you to enter the molar composition of the gas, which should not exceed 100% molar obviously, and then using the «Run» get values for a hypothetical gas of that composition molar.
The values you get will be:
2. Molecular weight
4. Critical temperature
5. Critical pressure
6. Viscosity at 1 atm
7. Viscosity at reservoir temperature and pressure (which can tabular)
Moreover, the important thing is that we will dispense with our tables Factor Z (if you have a computer at our side: P)
And finally we get the graph of the Z factor for the gas of those conditions.
I forgot: The Keyword is «FRED»and it is better to run the program in Windows XP than in Vista since the former have reported some bugs in the OS.