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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
EFFECTS OF SHEAR RATE, SUBCOOLING AND DISSOLUTION TIME ON METHANE HYDRATES FORMATION IN PURE WATER
Submission Author:
Guilherme Rainho Melhorim , ES
Co-Authors:
Guilherme Rainho Melhorim, Will Anderson Grippa, Edson Soares, Renato Siqueira, Adriana Teixeira, Leandro Valim
Presenter: Guilherme Rainho Melhorim
doi://10.26678/ABCM.ENCIT2020.CIT20-0775
Abstract
Gas hydrates are solids compounds formed by water and low molecular weight gases in appropriate conditions of temperature and pressure. The hydrates formation can plug the pipeline, causing production losses and restart problems, being an important issue in flow assurance by oil companies. In the present work, we use methane and deionized water to study the effect of shear rates (75, 100 and 125 s-1), subcooling (5 and 8 °C) and dissolution time (0 and 2 h) on hydrates formation, using a high-pressure rheometer system with a pressure cell and a vane rotor. The results indicate strong dependence of induction time on shear rates and subcooling, indicating that an increase in these parameters reduce the hydrates formation time.
Keywords
Hydrates, methane, pure water, Rheology, Flow assurance
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