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Low-Pressure Non-Circular Gas Flow Rate Calculator

Qg=kh(Pr2−Pwf2)1422μgavgTZavg[0.5ln⁡(4A/(1.781CArw2))+S]Q_g=\frac{kh(P_r^2-P_{wf}^2)}{1422\mu_{gavg}TZ_{avg}[0.5\ln(4A/(1.781C_Ar_w^2))+S]}

Enter the required inputs, confirm the units, and run the calculator to solve Q_g. 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.

11 variables

Calculation runs locally with the shared TypeScript engine.

Formula reference

Low-Pressure Non-Circular Gas Flow Rate calculates gas flow rate for well performance workflows in reservoir 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.