Dual Function Gas Hydrate Inhibitors
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United States of America Patent
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Issued Date -
Jun 23, 2011
app pub date -
Mar 12, 2009
filing date -
Mar 12, 2008
priority date (Note) -
Abandoned
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Abstract
The present invention involves inhibiting clathrate hydrate formation by adding ionic liquids that are soluble in water. Properly tailored ionic liquids shift the hydrate-aqueous liquid-vapor equilibrium curve to a lower temperature and, at the same time, retard the hydrate formation by slowing down the hydrate nucleation rate. This dual function makes this type of inhibitors perform more effectively. The present invention is useful for the production, processing, and transportation in oil and gas industry, especially for deep-sea exploration and production where the operating temperature and pressure become in favor of hydrate formation.
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