VisualPVT is your indispensable aide enabling accurate modeling of reservoir fluids and operating procedures under the compositional data constrains, when use of relevant empirical dependences (correlations) is required. The software includes about 150 correlations for oil, gas and water. Each correlation is open for on-the-fly modifications via the unique embedded VBA-based editor, thus, no programming skills are required. Add new correlations and exchange them freely with other VisualPVT software users in virtue of the permissive license.