期刊
JOURNAL OF SUPERCRITICAL FLUIDS
卷 98, 期 -, 页码 44-49出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.supflu.2015.01.001
关键词
Cubic-plus-association equation of state; CO2 solubility; Bitumen; Statistical association fluid theory
资金
- SHARP Research Consortium: BP Canada Energy Group ULC
- SHARP Research Consortium: Brion Energy
- SHARP Research Consortium: Chevron Energy Technology Co.
- SHARP Research Consortium: Computer Modelling Group Ltd.
- SHARP Research Consortium: ConocoPhillips Canada
- SHARP Research Consortium: Devon Canada Co.
- SHARP Research Consortium: Foundation CMG
- SHARP Research Consortium: Husky Energy
- SHARP Research Consortium: Japan Canada Oil Sands Limited
- SHARP Research Consortium: Nexen Energy ULC
- SHARP Research Consortium: Laricina Energy Ltd.
- SHARP Research Consortium: Natural Sciences and Engineering Research Council of Canada (NSERC)
- SHARP Research Consortium: OSUM Oil Sands Co.
- SHARP Research Consortium: PennWest Energy
- SHARP Research Consortium: Statoil Canada Ltd.
- SHARP Research Consortium: Suncor Energy and Total EP Canada
- Department of Chemical and Petroleum Engineering
- Schulich School of Engineering at the University of Calgary
The ability to accurately predict the solubility of CO2 in bitumen is essential to the design of bitumen and heavy oil recovery processes. We applied the cubic-plus-association equation of state (CPA-EoS) to calculate the solubility of CO2 in bitumen and the Soave-Redlich-Kwong (SRK) equation of state was applied to treat the physical molecular interactions. The proposed thermodynamic model was verified against the experimental data for CO2 solubility in bitumen over wide ranges of temperature and pressure for four different bitumens from Alberta reservoirs. The CPA-EoS was able to predict the solubility with less deviation from the experimental data than the regular cubic equations of state and the statistical association fluid theory (SAFT). Our results suggest that the CPA-EoS is an effective method of conducting solubility calculations for solvent assisted bitumen recovery processes. (C) 2015 Elsevier B.V. All rights reserved.
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