Category: PVT

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PVT fluid properties calculator

PVT software

PVT software is the core PVT engine of the pengtools.

PVT software calculates the main properties of oil, gas and water using a set of black-oil correlations and provides the basic input for any Petroleum Engineering calculation.

PVT software is available online at www.pengtools.com.

Typical applications

  • Calculation of fluid properties for oil, gas and water.
  • Generating the PVT model
  • Matching the PVT model to the Lab data
  • Exporting PVT tables to Excel or reservoir simulator

Main features

  • Plots of PVT properties vs pressure at reservoir temperature
  • Results table contains values under standard conditions and at pressures between surface atmospheric and reservoir at reservoir temperature
  • "Default values" button resets input values to the default values
  • Switch between Metric and Field units
  • Save/load models to the files and to the user’s cloud
  • Share models to the public cloud or by using model’s link
  • Export pdf report containing input parameters, calculated values and plots of the PVT properties
  • Continue your work from where you stopped: last saved model will be automatically opened
  • Download the chart as an image or data and print (upper-right corner chart’s button)
  • Export results table to Excel or other application

Demo

What to do when you need a PVT model quick? Watch our demo video on how to create a PVT model in 5 min?

Watch on youtube

In this demo we are solving the PVT exercise 11-2 of William McCain's book "The Properties of Petroleum Fluids".

Correlations

Property Correlation Reference
Bubble point Valko - McCain Valkó, P.P. and McCain, W.D. Jr . 2003. Reservoir oil bubblepoint pressures revisited; solution gas–oil ratios and surface gas specific gravities. J. Pet. Sci. Eng. 37 (3–4): 153-169.
Gas-oil ratio Velarde Velarde, J., Blasingame, T.A., and McCain Jr., W.D. 1997. Correlation of Black Oil Properties At Pressures Below Bubble Point Pressure - A New Approach. Presented at the Annual Technical Meeting of CIM, Calgary, Alberta, 8–11 June. PETSOC-97-93.
Oil compressibility Vasquez and Beggs Vasquez, M.; Beggs, H.D. (1980). "Correlations for Fluid Physical Properties Prediction"Free registration required. Journal of Petroleum Technology. Society of Petroleum Engineers. 32 (SPE-6719-PA).
Oil density McCain W.D. McCain, Jr, N.C. Hill: Correlations for Liquid Densities and Evolved Gas Specific Gravities for Black Oils during Pressure Depletion, SPE, 30773, 1995.
Oil FVF McCain W.D. McCain, Jr: The Properties of Petroleum Fluids, Second edition, Tulsa, Oklahoma, 1990.
Oil viscosity Beggs and Robinson

Beggs, H. D.; Robinson, J. R. (September 1975). "Estimating the Viscosity of Crude Oil Systems"Free registration required. Journal of Petroleum Technology. 27(09) (SPE-5434-PA).

Vasquez, M. and Beggs, H.D. 1980. Correlations for Fluid Physical Property Prediction. J Pet Technol 32 (6): 968-970. SPE-6719-PA.
Gas oil interfacial tension Baker and Swerdloff Baker, O. and Swerdloff, W. 1955. Calculation of Surface Tension 3—Calculating parachor Values. Oil Gas J. (5 December 1955): 141.
Z factor Dranchuk Dranchuk, P.M. and Abou-Kassem, H. 1975. Calculation of Z Factors For Natural Gases Using Equations of State. J Can Pet Technol 14 (3): 34. PETSOC-75-03-03.
Gas FVF Standard equation http://petrowiki.org/Gas_formation_volume_factor_and_density
Gas viscosity Lee Lee, A.L., Gonzalez, M.H., and Eakin, B.E. 1966. The Viscosity of Natural Gases. J Pet Technol 18 (8): 997–1000. SPE-1340-PA.
Gas density Standard equation http://petrowiki.org/Gas_formation_volume_factor_and_density
Gas compressibility Standard equation http://petrowiki.org/Isothermal_compressibility_of_gases
Water salinity McCain McCain Jr., W.D. 1991. Reservoir-Fluid Property Correlations-State of the Art. SPE Res Eng 6 (2): 266-272. SPE-18571-PA.
Water Formation Volume Factor McCain McCain Jr., W.D. 1991. Reservoir-Fluid Property Correlations-State of the Art. SPE Res Eng 6 (2): 266-272. SPE-18571-PA.
Water density McCain McCain Jr., W.D. 1991. Reservoir-Fluid Property Correlations-State of the Art. SPE Res Eng 6 (2): 266-272. SPE-18571-PA.
Water compressibility McCain McCain Jr., W.D. 1991. Reservoir-Fluid Property Correlations-State of the Art. SPE Res Eng 6 (2): 266-272. SPE-18571-PA.
Water viscosity McCain McCain Jr., W.D. 1991. Reservoir-Fluid Property Correlations-State of the Art. SPE Res Eng 6 (2): 266-272. SPE-18571-PA.
Gas water interfacial tension Baker and Swerdloff Baker, O. and Swerdloff, W. 1955. Calculation of Surface Tension 3—Calculating parachor Values. Oil Gas J. (5 December 1955): 141.