Saturated Oil Compressibility from FVF and Solution GOR Derivatives Formula
Saturated Oil Compressibility from FVF and Solution GOR Derivatives calculates saturated oil compressibility for pvt properties workflows in phase behavior and thermodynamics.
How engineers use this formula
Use this formula when the listed inputs (B_o, B_g, dB_o_dp, dR_s_dp) are known and the assumptions behind the cited pvt properties relationship match the engineering case being checked.
Assumptions
- Input values are representative for the well, reservoir, fluid, or equipment case being evaluated.
- The declared units match the field-unit constants used in the formula.
- The cited formula applies to the selected petroleum engineering workflow.
Limitations
- The calculation does not replace a full engineering model or operating procedure.
- Accuracy depends on the source correlation, assumptions, input quality, and unit consistency.
Common mistakes
- Mixing unit systems without converting the inputs.
- Using default example values as field recommendations.
- Applying the formula outside the source assumptions.
Default example
Using the default inputs, c_o equals 0.000125 1/psi.
1.2
0.0008
-0.00003
0.15
Inputs
B_o
RB/STBOil Formation Volume Factor
B_g
RB/scfGas Formation Volume Factor
dB_o_dp
RB/STB/psiPressure Derivative of Oil Formation Volume Factor
dR_s_dp
SCF/STB/psiPressure Derivative of Solution Gas-Oil Ratio
Outputs
c_o
Saturated Oil Compressibility
B_o
Oil Formation Volume Factor
B_g
Gas Formation Volume Factor
dB_o_dp
Pressure Derivative of Oil Formation Volume Factor
dR_s_dp
Pressure Derivative of Solution Gas-Oil Ratio
Source and review
reviewedBoltzmann transformation of radial two-phase black oil model for tight oil reservoirs, Prempeh, K.O.K. et al.
Prempeh et al. 2022. Boltzmann transformation of radial two-phase black oil model for tight oil reservoirs, Journal of Petroleum Exploration and Production Technology.
Source