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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
RHEOLOGICAL MEASUREMENTS OF TETRAHYDROFURAN HYDRATE SLURRIES
Submission Author:
Roney Thompson , RJ
Co-Authors:
Ícaro Coelho, Wesley Ferrari, Edson Soares, Roney Thompson, Adriana Teixeira
Presenter: Wesley Ferrari
doi://10.26678/ABCM.ENCIT2020.CIT20-0569
Abstract
Blockage of pipelines due to hydrate formation are one of the main concerns in flow assurance of the oil industry. The re-start problem is intrinsically dependent on the rheology of these slurries. In the present work we measure material functions of hydrate slurries formed from a mixture of Tetrahydrofuran (THF) in water. Rigid protocols are needed for hydrate formation and rheological measurements. We perform different tests in a Taylor--Couette geometry and measured the viscosity as a function of time for different conditions. Our results demonstrated the low level of time dependency for the volume fractions tested in the present work, namely 30\%, 35\%, and 40\%. The higher the THF content, the lower is the final level of viscosity. The effects of pre-shearing level, rest waiting time, and total test time lead to small discrepancies in the flow curve, mainly concentrated in the lower range of shear rate values, for the parameters tested in the present work
Keywords
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