Studies on Nigerian Crudes. I. Characterization of Crude Oil Mixtures

Nigerian crude oil samples produced from various locations have been tested under laboratory conditions using ASTM methods. Experimental analyses were performed on fifteen light and medium pure samples and their binary mixtures. Observations showed that oils characterized by the same specific gravit...

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Bibliographic Details
Published in:Petroleum science and technology 2004-05, Vol.22 (5-6), p.665-675
Main Authors: Oyekunle, L. O., Famakin, O. A.
Format: Article
Language:English
Subjects:
Applied sciences
Binary mixtures
Correlation of properties
Crude oil, natural gas and petroleum products
Energy
Exact sciences and technology
Fuels
Light and medium samples
Nigerian crudes
Petroleum products, gas and fuels. Motor fuels, lubricants and asphalts
Physical characteristics
Processing of crude oil and oils from shales and tar sands. Processes. Equipment. Refinery and treatment units
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Summary:Nigerian crude oil samples produced from various locations have been tested under laboratory conditions using ASTM methods. Experimental analyses were performed on fifteen light and medium pure samples and their binary mixtures. Observations showed that oils characterized by the same specific gravity do not exhibit the same viscosity. Both gravity and viscosity increased with volume concentration in a nonlinear manner. Only binary blends of light crude oils produce linear viscosity-composition relationship. The viscosity-composition data for other blends were correlated using double logarithmic plots. These plots indicate that medium/medium crude oil blends demonstrated very clear linearity over the entire composition range while light/medium mixture plots were linear in the 0-50 vol.% composition range. Viscosity has been found to be a very useful parameter for correlating the properties of crude oil mixtures.
ISSN:1091-6466
1532-2459
DOI:10.1081/LFT-120034207