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High pressure rheology of gas hydrate formed from multiphase systems using modified Couette rheometer by Gaurav Pandey; Praveen Linga; Jitendra S. Sangwai is a Physics and Astronomy article available to read on EtoBox.

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Conventional rheometers with concentric cylinder geometries do not enhance mixing in situ and thus are not suitable for rheological studies of multiphase systems under high pressure such as gas hydrates. In this study, we demonstrate the use of modified Couette concentric cylinder geometries for high pressure rheological studies during the formation and dissociation of methane hydrate formed from pure water and water-decane systems. Conventional concentric cylinder Couette geometry did not produce any hydrates in situ and thus failed to measure rheological properties during hydrate formation. The modified Couette geometries proposed in this work observed to provide enhanced mixing in situ, thus forming gas hydrate from the gas-water-decane system. This study also nullifies the use of separate external high pressure cell for such measurements. The modified geometry was observed to measure gas hydrate viscosity from an initial condition of 0.001 Pa s to about 25 Pa s. The proposed geometries also possess the capability to measure dynamic viscoelastic properties of hydrate slurries at the end of experiments. The modified geometries could also capture and mimic the viscosity profile du

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Author

Gaurav Pandey; Praveen Linga; Jitendra S. Sangwai

Publisher

AIP Publishing

Published

2017

Language

EN

Field

Physics and Astronomy (Physical Sciences)