A new classification of crude oils was developed using gas chromatogra
phy. With the LSER equation of Abraham et al., five parameters (interm
olecular interaction terms) were obtained characterizing physicochemic
ally 47 crude oils. This classification is in good agreement with the
crude oil chemical composition and constitutes a first step in the exp
lanation of their behaviour in the production steps. Copyright (C) 199
6 Elsevier Science Ltd.