Reservoir EngineeringReservoir Volumetrics
Hydrocarbon Pore Volume - Volumetric Method Formula
Hydrocarbon Pore Volume - Volumetric Method calculates hydrocarbon pore volume for reservoir volumetrics workflows in reservoir engineering.
How engineers use this formula
Use this formula when the listed inputs (A, h, phi, S_wi) are known and the assumptions behind the cited reservoir volumetrics 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, HCPV equals 8,378,640 bbl.
Aacres
160
hft
50
phifraction
0.18
S_wifraction
0.25
Inputs
A
acresReservoir Area
h
ftNet Pay Thickness
phi
fractionPorosity
S_wi
fractionInitial Water Saturation
Outputs
HCPV
bbl
Hydrocarbon Pore Volume
A
acres
Reservoir Area
h
ft
Net Pay Thickness
phi
fraction
Porosity
S_wi
fraction
Initial Water Saturation
Source and review
reviewedAAPG Wiki. Predicting hydrocarbon recovery. Oil in place and hydrocarbon volume terms.
Source