Brill-Beggs and Dranchuk-Abou-Kassem fits of the Standing-Katz chart.
2 functions
PO.PVT.Z.ByBrillBeggs
Calculates gas compressibility factor (Z) using Brill and Beggs (1974) correlation, {1}.
PO.PVT.Z.ByDAK
Calculates gas compressibility factor (Z) using Dranchuk and Abou-Kassem (1975) equation of state, {1}.
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