Pseudo-Steady State Horizontal Well Productivity Method 3 Formula
Pseudo-Steady State Horizontal Well Productivity Method 3 calculates pseudo-steady state horizontal well productivity index for well performance workflows in reservoir engineering.
How engineers use this formula
Use this formula when the listed inputs (k_h, k_v, h, mu_o, F, L, s_x) are known and the assumptions behind the cited well performance 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, J_h equals 13.45161 STB/day/psi.
100
10
50
2
2
1000
2
Inputs
k_h
mDHorizontal Permeability
k_v
mDVertical Permeability
h
ftReservoir Thickness
mu_o
cPOil Viscosity
F
dimensionlessShape and Drainage Geometry Factor
L
ftFracture Length
s_x
dimensionlessPseudo-Skin Factor
Outputs
J_h
Pseudo-Steady State Horizontal Well Productivity Index
F
Shape and Drainage Geometry Factor
s_x
Pseudo-Skin Factor
mu_o
Oil Viscosity
L
Fracture Length
Source and review
reviewedJoshi, S.D. 1991. Horizontal Well Technology. Tulsa, Oklahoma: PennWell Publishing Company.
Source