Importance of the C 7 + fraction in phase behavior calculations

This report presents some examples that indicate the magnitude of changes in the physical properties obtained by perturbing the molecular weight of the C 7 + and by splitting this fraction. A hypothetical volatile/condensate fluid, A, and a black oil fluid, B, are considered in this analysis. Among the properties analyzed are the effect of the C 7 + fraction molecular weight in the evaluation of formation volume factors (B o) and of solution gas oil ratios (R s) for a black oil. The effect of splitting upon saturation pressures and the prediction of wax deposition is also briefly presented. The Suave-Redlich-Kwong (SRK) equation of state (EOS) is used for all computations.

Importance of the C 7 + fraction in phase behavior calculations Academic Article