Production EngineeringHydraulic Fracturing
Injection Pressure for Hydraulic Fracturing Formula
Injection Pressure for Hydraulic Fracturing calculates injection pressure for hydraulic fracturing workflows in production engineering.
How engineers use this formula
Use this formula when the listed inputs (P_F, DeltaP_f, DeltaP_p, DeltaP_h) 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, P_inj equals 3,500 psi.
P_Fpsi
6000
DeltaP_fpsi
800
DeltaP_ppsi
200
DeltaP_hpsi
3500
Inputs
P_F
psiDownhole Fracturing Operation Pressure
DeltaP_f
psiFriction Pressure Loss
DeltaP_p
psiPerforation Pressure Loss
DeltaP_h
psiHydrostatic Pressure Change
Outputs
P_inj
psi
Injection Pressure
P_F
psi
Downhole Fracturing Operation Pressure
DeltaP_f
psi
Friction Pressure Loss
DeltaP_p
psi
Perforation Pressure Loss
DeltaP_h
psi
Hydrostatic Pressure Change
Source and review
reviewedSaydam, T. 1967. Principles of Hydraulic Fracturing. ARI Publishing Co., Page 24.
Source