a b s t r a c t
Article history: This work consists of a combined experimental and modeling study for oil e MEG e water systems, of
Received 29 July 2015 relevance to petroleum applications. We present new experimental liquideliquid equilibrium data for
Received in revised form the mutual solubility of two North Sea oils ? MEG and North Sea oils ? MEG ? water systems in the
22 November 2015
temperature range 303.15e323.15 K and at atmospheric pressure. These new data are for North Sea oils
Accepted 24 November 2015
Available online 30 November 2015 which are substantially heavier and with higher aromatic/naphthenic content compared to previous
studies. The new data compare favorably with previously reported measurements for other North Sea
oils. The data have been successfully modeled using the Cubic- Plus-Association (CPA) equation of state
(EoS) using a previously developed characterization method and new correlations for estimating binary
interaction parameters between MEG-hydrocarbons and water-hydrocarbons. The results are in satis-
factory agreement to the experimental data, considering especially the complexity of the studied
reservoir fluids, in particular their heavy and aromatic character.