New Correlations for Predicting the Density and Viscosity of Supercritical Carbon Dioxide Under Conditions Expected in Carbon Capture and Sequestration Operations

Liang-Biao Ouyang*
Chevron Corporation, P. O. Box 5095, Bellaire, TX 77402-5095, USA.

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© Ouyang et al.;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Correspondence: * Address correspondence to this author at the Chevron Corporation, P. O. Box 5095, Bellaire, TX 77402-5095, USA; Tel: +61 8 9485 5587); E-mail:


Two new simple and explicit correlations have been proposed in the present paper to calculate the density and the viscosity of carbon dioxide under operational conditions anticipated for a carbon capture and sequestration (CCS) project - pressure = 1100 - 9000 psia (7 - 62 MPa) and temperature = 40 – 100 °C. The new correlations can predict carbon dioxide density and viscosity well matched to the high accuracy carbon dioxide property data available through the National Institute of Standards and Technology (NIST) web database [1]. Substantial improvement over existing correlations has also been achieved with the new correlations.