1887

Abstract

Summary

Asphaltene -the cholesterol of crude oil- may negatively affect oil and gas industry in terms of production, processing, transportation, economic, and environmental aspects. Asphaltene precipitation may occur under thermodynamic conditions, such as pressure, temperature, and composition change. To obtain comprehensive understanding of asphaltene and its behaviours, an advanced thermodynamic equation of state -cubic plus EOS-was used to model asphaltene precipitation under wide range of pressure conditions (1100–4100 psia) and different solvents (n-pentane, n-hexane, and n-heptane). The physical and association characteristics were considered in the CPA model. It was shown that the CPA EOS can accurately model asphaltene precipitation, since the association nature of asphaltene was accounted in the model. The results of the model were assessed with our experimental data and the average of mean absolute percentage error (MAPE) of almost 0.13 was obtained that shows the trustworthiness of the CPA EOS.

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/content/papers/10.3997/2214-4609.201901314
2019-06-03
2024-04-16
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