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Water Injection Pressure Calculator
Calculate required surface injection pressure for water injection wells. Account for wellbore friction, hydrostatic head, and reservoir injection pressure.
Inputs
Typical: 0.5–5 bbl/d/psi
Fresh water=1.0, brine=1.05–1.1
2⅞" 6.5# = 2.441"
Results
BH Injection Pressure
--
psi
Surface Injection Pressure
--
psi
Hydrostatic Head
--
psi
Friction Loss
--
psi
Equations
BH Injection Pressure: P_BH = P_reservoir + Q / II
Hydrostatic head: P_hyd = SG × 0.433 × depth
Friction loss: Darcy-Weisbach approximation for turbulent flow in tubing
Surface pressure: P_surf = P_BH - P_hyd + P_friction
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