Oil Compressibility LAMBDAs
Undersaturated compressibility by Vasquez-Beggs and saturated by Villena-Lanzi.
2 lambdas
PO.PVT.Co.UnSat.ByVasquezBeggs.SI(Rsb, SG_gas, API, T_degC, P)
Calculates undersaturated oil compressibility using Vasquez and Beggs (1980) correlation, [1/kPa] (SI units).
PO.PVT.Co.Sat.ByVillenaLanzi.SI(P, Pb, T_degC, Rsb, API)
Calculates saturated oil compressibility using Villena-Lanzi (1985) correlation, [1/kPa] (SI units).