Reservoir EngineeringWaterflooding and EOR
Hot-Water Flood Fractional Flow from Mobility Ratio Formula
Hot-Water Flood Fractional Flow from Mobility Ratio calculates water fractional flow at saturation and temperature for waterflooding and eor workflows in reservoir engineering.
How engineers use this formula
Use this formula when the listed inputs (M_ST) are known and the assumptions behind the cited waterflooding and eor 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, f_w_ST equals 0.666667 dimensionless.
M_STdimensionless
2
Inputs
M_ST
dimensionlessMobility Ratio at Saturation and Temperature
Outputs
f_w_ST
dimensionless
Water Fractional Flow at Saturation and Temperature
M_ST
dimensionless
Mobility Ratio at Saturation and Temperature
Source and review
reviewedPrats, M. Thermal Recovery, Society of Petroleum Engineers, Chapter 6, Page 60.
Source