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Water Injection Bottom-Hole Pressure from Radial Flow Calculator

Piwf=Pe+qwμwBw[ln⁡(re/rw)+s]0.00708krwkhP_{iwf}=P_e+\frac{q_w\mu_wB_w[\ln(r_e/r_w)+s]}{0.00708k_{rw}kh}

Enter the required inputs, confirm the units, and run the calculator to solve P_iwf. Review the formula source and assumptions before using the result in engineering work.

Tabular solver

Inputs

Defaults provide a quick field-unit example for the equation.

10 variables

Calculation runs locally with the shared TypeScript engine.

Formula reference

Water Injection Bottom-Hole Pressure from Radial Flow calculates flowing bottom-hole injection pressure for injection wells workflows in production engineering.

View formula, units, and source

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.

Common mistakes

  • Mixing unit systems without converting the inputs.
  • Using default example values as field recommendations.
  • Applying the formula outside the source assumptions.