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Chemcial Industry and Engineering 2024, Vol. 41 Issue (1) :90-102    DOI: 10.13353/j.issn.1004.9533.20220108
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A review of the viscosity of carbon dioxide expanded liquids in enhanced oil recovery
FANG Yuan1,2, GAO Yahui1,2, GONG Yanling3, XIA Shuqian1,2
1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
2. Key Laboratory for Green Chemical Technology of Ministry of Education, Tianjin University, Tianjin 300072, China;
3. The Chemical Industry and Engineering Society of China, Beijing 100020, China

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Abstract The global warming issue caused by the greenhouse effect has attracted much attention over the past few years. Carbon dioxide (CO2) is considered the most important greenhouse gas. China has committed to the international community to reach carbon peaking and carbon neutrality goals. The CO2-EOR (CO2 enhanced oil recovery) technology can not only reduce CO2 emissions, but also expand the crude oil, reduce the viscosity of the crude oil, and enhance the fluidity of the crude oil to improve the oil recovery efficiency. Therefore, a full understanding of the transfer characteristics of CO2-expanded liquids (CXLs) is very important for the utilization of CO2-EOR technology. This paper provides a literature review of the research on the viscosity of carbon dioxide expanded liquids systems, including the experiment equipment, experimental data, and calculation models. The non-contact viscosity measurement methods such as surface light scattering have recently attracted more attention. And, there were many available experimental data for the CO2-n-decane and CO2-n-tetradecane binary systems while few data for CO2-n-alkane multi-system, CO2-cycloalkane, CO2-aromatic hydrocarbon, and CO2-cosolvent systems. This paper also describes the use of Eyring’s absolute reaction theory for calculating the viscosity of CXLs.
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FANG Yuan
GAO Yahui
GONG Yanling
XIA Shuqian
KeywordsCO2-expanded liquids   CO2 enhanced oil recovery   viscosity     
Received 2022-01-18;
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FANG Yuan, GAO Yahui, GONG Yanling, XIA Shuqian.A review of the viscosity of carbon dioxide expanded liquids in enhanced oil recovery[J]  Chemcial Industry and Engineering, 2024,V41(1): 90-102
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