The plateau effects and crystal transition study in Tetrahydrofuran (THF)/CO2/H2 hydrate formation processes

Summary Offshore natural-gas production from methane-hydrate (MH) reservoirs has received considerable attention. In this study, the offshore production method is briefly described, followed by the flow loop experiments performed to investigate the formation processes of MH in methane-in-water bubbly flows. Transient processes of phase transformation are characterized by phase paths, flow morphologies, pump heads, and in-situ particle-size measurements. It is realized that an MH slurry is generated by MH shells covering unconverted bubbles, whereas it can be transformed into a colloidal flow with fine crystalline particles under an intense turbulent shear. This study suggests that, in practice, the flow pattern under MH formation would be determined by the phase path and the flow velocity in the pipeline, which is one of the important factors considered in the evaluation of flow-assurance risks.

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Comparison of CO2/H2/H2O Hydrate Formation Processes with Different Promoters

Energy Procedia ◽

10.1016/j.egypro.2019.01.541 ◽

2019 ◽

Vol 158 ◽

pp. 5850-5855 ◽

Cited By ~ 3

Author(s):

Zhiming Xia ◽

Zeyu Li ◽

Xiaosen Li ◽

Zhaoyang Chen ◽

Gang Li ◽

...

Keyword(s):

Hydrate Formation ◽

Formation Processes

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Dissolution and hydrate-formation processes behind the shock wave in a gas-liquid mixture

Doklady Physics ◽

10.1134/s1028335809040144 ◽

2009 ◽

Vol 54 (4) ◽

pp. 215-219 ◽

Cited By ~ 8

Author(s):

V. E. Dontsov ◽

A. A. Chernov

Keyword(s):

Shock Wave ◽

Liquid Mixture ◽

Hydrate Formation ◽

Formation Processes

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Intermolecular Forces in Clathrate Hydrate Related Processes

Volume 5B: Pipeline and Riser Technology ◽

10.1115/omae2015-41774 ◽

2015 ◽

Author(s):

Remi-Erempagamo T. Meindinyo ◽

Thor Martin Svartås

Keyword(s):

Petroleum Industry ◽

Hydrate Formation ◽

Intermolecular Forces ◽

Clathrate Hydrate ◽

Formation Processes ◽

Scientific Interest ◽

Thermodynamics And Kinetics ◽

Gas Hydrate Formation ◽

Underlying Processes ◽

Kinetics Of

The thermodynamics and kinetics of clathrate hydrate formation processes are topics of high scientific interest, especially in the petroleum industry. Researchers have made efforts at understanding the underlying processes that explicate the macroscopic observations from experiments and other research methods of gas hydrate formation. To achieve this, they have employed theories founded upon force related intermolecular interactions. Some of the theories and concepts employed include hydrogen bonding, the Leonard Jones force principle, and steric interactions. This paper gives a brief review of how these intermolecular interaction principles have been understood, and used as tools, in explaining the inaccessible microscopic processes, that characterize clathrate hydrate formation. It touches upon nucleation, growth, and inhibition processes.

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