Buckley-Leverett Breakthrough Pore Volumes Calculator
Enter the required inputs, confirm the units, and run the calculator to solve t_D_bt. Review the formula source and assumptions before using the result in engineering work.
Calculation context and source notes
Buckley-Leverett Breakthrough Pore Volumes calculates dimensionless breakthrough time for permeability and flow workflows in reservoir engineering. The page keeps the declared variables, units, source relationship, and output definition visible for technical review.
Use this formula when the listed inputs (dfw_dSw_shock) are known and the assumptions behind the cited permeability and flow relationship match the engineering case being checked.
Solves for
t_D_bt (pore volumes)
Best next page
Formula, variables, and sourceFormula, variables, and default calculation
Reproducible default result
With the default values shown below, the calculation returns t_D_bt = 0.4 pore volumes. Defaults demonstrate the implementation; they are not recommended field values.
2.5
Input definitions
dfw_dSw_shock
1/fractionFractional Flow Derivative at Shock Front Saturation
Output definitions
t_D_bt
Dimensionless Breakthrough Time
dfw_dSw_shock
Fractional Flow Derivative at Shock Front Saturation
Engineering use, assumptions, and limits
Use this formula when the listed inputs (dfw_dSw_shock) are known and the assumptions behind the cited permeability and flow 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.
Frequently asked questions
What inputs does the Buckley-Leverett Breakthrough Pore Volumes calculator need?
The calculation uses Fractional Flow Derivative at Shock Front Saturation (dfw_dSw_shock). Enter values on the units shown beside each field.
What result does this calculator return?
The primary result is dimensionless breakthrough time in pore volumes. The formula section shows the declared relationship, variables, and a reproducible default calculation.
What should I check before using the result?
Confirm the unit basis, source applicability, and input quality. The calculation does not replace a full engineering model or operating procedure. Mixing unit systems without converting the inputs.
Source and record status
Source metadata identifies the relationship implemented by the calculator. Check the cited edition, unit basis, and scope against the engineering case before operational use.
FVTool. Two-phase flow in porous media: analytical vs numerical solution.
Open source reference