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Reservoir EngineeringPVT Properties

Water Two-Phase Formation Volume Factor Calculator

Btw=Bw+Bg(Rs−Ri)B_{tw}=B_w+B_g(R_s-R_i)

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

4 variables

Calculation runs locally with the shared TypeScript engine.

Formula reference

Water Two-Phase Formation Volume Factor calculates water two-phase formation volume factor for pvt properties 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.