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Phase Behavior and ThermodynamicsPVT Properties

Villena-Lanzi Saturated Oil Compressibility Calculator

co=exp⁡[−0.664−1.430ln⁡p−0.395ln⁡pb+0.390ln⁡T+0.455ln⁡Rsb+0.262ln⁡API]c_o=\exp[-0.664-1.430\ln p-0.395\ln p_b+0.390\ln T+0.455\ln R_{sb}+0.262\ln API]

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

Villena-Lanzi Saturated Oil Compressibility calculates saturated oil compressibility for pvt properties workflows in phase behavior and thermodynamics.

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.