Enhancing Asphaltene Precipitation Modeling by Cubic-PR Solid Model Using Thermodynamic Correlations and Averaging Techniques
Author's Department
Petroleum & Energy Engineering Department
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https://link.springer.com/content/pdf/10.1007/s12182-019-00377-1.pdf
Document Type
Research Article
Publication Title
Petroleum Science
Publication Date
10-1-2019
doi
10.1007/s12182-019-00377-1
Abstract
Cubic equation-of-state solid models are one of the most widely used models to predict asphaltene precipitation behavior. Thermodynamic parameters are needed to model precipitation under different pressures and temperatures and are usually obtained through tuning with multi asphaltene onset experiments. For the purpose of enhancing the cubic Peng–Robinson solid model and reducing its dependency on asphaltene experiments, this paper tests the use of aromatics and waxes correlations to obtain these thermodynamic parameters. In addition, weighted averages between both correlations are introduced. The averaging is based on reported saturates, aromatics, resins, asphaltene (SARA) fractions, and wax content. All the methods are tested on four oil samples, with previously published data, covering precipitation and onset experiments. The proposed wax-asphaltene average showed the best match with experimental data, followed by a SARA-weighted average. This new addition enhances the model predictability and agrees with the general molecular structure of asphaltene molecules.
First Page
232
Last Page
241
Recommended Citation
APA Citation
ElBanbi, A. H.
(2019). Enhancing Asphaltene Precipitation Modeling by Cubic-PR Solid Model Using Thermodynamic Correlations and Averaging Techniques. Petroleum Science, 17(1), 232–241.
10.1007/s12182-019-00377-1
https://fount.aucegypt.edu/faculty_journal_articles/198
MLA Citation
ElBanbi, Ahmed Hamdi
"Enhancing Asphaltene Precipitation Modeling by Cubic-PR Solid Model Using Thermodynamic Correlations and Averaging Techniques." Petroleum Science, vol. 17,no. 1, 2019, pp. 232–241.
https://fount.aucegypt.edu/faculty_journal_articles/198