Hydrocarbon Pore Volume Occupied by Remaining Oil Formula
Hydrocarbon Pore Volume Occupied by Remaining Oil calculates hydrocarbon pore volume occupied by remaining oil for material balance and production workflows in reservoir engineering.
How engineers use this formula
Use this formula when the listed inputs (N, N_p, B_o) are known and the assumptions behind the cited material balance and production 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, V_ro equals 1,080,000 bbl.
1000000
100000
1.2
Inputs
N
STBOil in Place
N_p
STBCumulative Oil Production
B_o
bbl/STBOil Formation Volume Factor
Outputs
V_ro
Hydrocarbon Pore Volume Occupied by Remaining Oil
N
Oil in Place
N_p
Cumulative Oil Production
B_o
Oil Formation Volume Factor
Source and review
reviewedAdvanced Reservoir Engineering, Ahmed, T., McKinney, P. D. (2005)
Ahmed, T. and McKinney, P. D. 2005. Advanced Reservoir Engineering. Gulf Publishing of Elsevier, Chapter 4, Page 301.
Source