Reservoir EngineeringWaterflooding and EOR
Dykstra-Parsons Coefficient Formula
Dykstra-Parsons Coefficient calculates dykstra-parsons coefficient for waterflooding and eor workflows in reservoir engineering.
How engineers use this formula
Use this formula when the listed inputs (k_50, k_84_1) 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, V equals 0.6 dimensionless.
k_50mD
100
k_84_1mD
40
Inputs
k_50
mDPermeability at 50th percentile
k_84_1
mDPermeability at 84.1st percentile
Outputs
V
dimensionless
Dykstra-Parsons coefficient
k_50
mD
Permeability at 50th percentile
k_84_1
mD
Permeability at 84.1st percentile
Source and review
reviewedWaterflooding, Willhite, G. P. (1986)
Willhite, G. P. 1986. Waterflooding, SPE Textbook Series Vol. 3, Richardson, Texas, Chapter 5, Page 172.
Source