Pore Throat Sorting from Capillary Pressure Quartiles Formula
Pore Throat Sorting from Capillary Pressure Quartiles calculates pore throat sorting for rock properties workflows in reservoir engineering.
How engineers use this formula
Use this formula when the listed inputs (Q_3, Q_1) are known and the assumptions behind the cited rock properties 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, PTS equals 2 dimensionless.
100
25
Inputs
Q_3
psiCapillary Pressure at 75 Percent Saturation
Q_1
psiCapillary Pressure at 25 Percent Saturation
Outputs
PTS
Pore Throat Sorting
Q_3
Capillary Pressure at 75 Percent Saturation
Q_1
Capillary Pressure at 25 Percent Saturation
Source and review
reviewedPetroleum Reservoir Rock and Fluid Properties, Dandekar, A. Y. (2006)
Dandekar, A. Y. 2006. Petroleum Reservoir Rock and Fluid Properties. CRC Press Taylor and Francis Group, Chapter 8, Page 176.
Source