Abstract
Six Pakistani crude oils are characterized and their rheological behavior is studied in a standard rotational rheometer. TBP distillation data and density of whole crude oil are used to perform the basic characterization and to obtain the product distribution of the crudes. All the crude oils studied exhibit non-Newtonian behavior under the conditions of experimentation. Various non-Newtonian models such as the power law model, Bingham plastic model, and Herschel-Bulkley model are used to fit the experimental rheological data. The power law model exhibiting pseudoplastic behavior is found extremely satisfactory for the majority of the crude oils.
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