ZfactorDAK

Brill and Beggs correlation for gas compressibility factor (Z), [dimensionless]

Dindoruk and Christman (2001) correlation for oil formation volume factor, P <= Pb, [bbl/STB]

Vasquez and Beggs (1980) correlation for oil compressibility, P > Pb, [1/psi]

Villena-Lanzi (1985) correlation for oil compressibility, P <= Pb, [1/psi]

Standing correlation for oil bubble point pressure, [psia]

Vasquez and Beggs correlation for oil bubble point pressure, [psia]

Glaso correlation for oil bubble point pressure, [psia]

Al-Marhoun correlation for oil bubble point pressure, [psia]

Petrosky and Farshad correlation for oil bubble point pressure, [psia]

Dokla and Osman correlation for oil bubble point pressure, [psia]