Can Interfacial rheology between crude oil and brine be measured with cup and bob type rheometer?

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Sidharth Gautam

No, Bob and cup type rheometer measures the rheology from the viscous drag of the whole sample (Vertical) not the horizontal (at interface).

Interfacial characteristics (rheology) are generally dependent on the behavior of both phases. Therefore, these characteristics exhibit even greater dependency on the behavior of the molecules positioned at the interface, particularly on their chemical composition, concentration and interactions. Therefore, rheology analysis can be done by simple bob and cup rheometer.

Kindly go through the paper. For better insight in this topic.