Reservoir EngineeringPermeability and Flow
Buckley-Leverett Breakthrough Pore Volumes Formula
Buckley-Leverett Breakthrough Pore Volumes calculates dimensionless breakthrough time for permeability and flow workflows in reservoir engineering.
How engineers use this formula
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.
Default example
Using the default inputs, t_D_bt equals 0.4 pore volumes.
dfw_dSw_shock1/fraction
2.5
Inputs
dfw_dSw_shock
1/fractionFractional Flow Derivative at Shock Front Saturation
Outputs
t_D_bt
pore volumes
Dimensionless Breakthrough Time
dfw_dSw_shock
1/fraction
Fractional Flow Derivative at Shock Front Saturation
Source and review
reviewedFVTool. Two-phase flow in porous media: analytical vs numerical solution.
Source