it gives you an indetail information about gas formation volume factor formula, derivation, constant information, and a numerical problem for better understanding

1. Properties of Crude Oil

2. Properties
• Density
• Specific Gravity
• API
• Gas Solubility
• Oil formation factor and Total Oil Formation
factor
• Formula derivation, its constant
• Numerical Approach

3. Formula
• Gas
PV=ZnRT

4. • (number of moles does not change for both reservoir and surface and for Z at surface the
compressibility is negligible)
• The condition at surface for temperature is 60 F and the pressure is like 14.7 psi

5. Cubic feet to barrels
• To convert 1 barrel to we have to use 5.615
as a conversion factor since 1 barrel = 5.615

6. Numerical approach
• A gas well is producing at a rate of 15000 cubic feet/
day from a gas reservoir at an average pressure of 2000
psia and a temperature of 120ᵒF. Calculate gas
formation volume factor when z-factor is 0.78?
• Formula used:
• Expansion is 1/0.00639 = 156.49 scf/

7. Reference
• Syed Nawaz (Ex-NDT Inspector and Ex-Student
of PetroGate Academy, Dehradun, student of
Andhra University, India)
• L.P.Dake
• Tarek Ahmed
• A.I.Leverson
• Petrowiki google
• Youtube

8. ?
Any Queries
Mail address: nawaz.delta.au@gmail.com