PetroCalcHubFree
Browse
Reservoir EngineeringWaterflooding and EOR

In-Situ Combustion Oil Production - Nelson and McNeil Calculator

Np=7758ϕ[Vr(Si−Sf)+0.4(Vp−Vr)Si]N_p=7758\phi\left[V_r(S_i-S_f)+0.4(V_p-V_r)S_i\right]

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

5 variables

Calculation runs locally with the shared TypeScript engine.

Formula reference

In-Situ Combustion Oil Production - Nelson and McNeil calculates cumulative oil production for waterflooding and eor 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.