Fracture Fluid Coefficient - Reservoir-Controlled Liquids Formula
Fracture Fluid Coefficient - Reservoir-Controlled Liquids calculates reservoir-controlled fracture fluid coefficient for hydraulic fracturing workflows in production engineering.
How engineers use this formula
Use this formula when the listed inputs (c_conv, DeltaP, k, c_f, phi_pct, mu) are known and the assumptions behind the cited hydraulic fracturing 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, C_r equals 0.007071 dimensionless.
0.001
1000
0.5
0.00001
20
2
Inputs
c_conv
dimensionlessConversion Coefficient
DeltaP
psiPressure Difference at the Fracture Face
k
DarcyEffective Permeability
c_f
psi^-1Isothermal Compressibility of Reservoir Fluid
phi_pct
%Effective Porosity
mu
cPViscosity of Reservoir Fluid
Outputs
C_r
Reservoir-Controlled Fracture Fluid Coefficient
c_conv
Conversion Coefficient
DeltaP
Pressure Difference at the Fracture Face
mu
Viscosity of Reservoir Fluid
Source and review
reviewedSaydam, T. 1967. Principles of Hydraulic Fracturing. ARI Publishing Co., Page 20.
Source