The Development of a New Empirical Correlation for Predicting Hydrate Formation Conditions

Hydrates are known to occur in a variety of natural-gas handling facilities and processing equipment in oil fields, refineries, and chemical plants when natural gas and water coexist at elevated pressure and reduced temperature. Prevention of hydrate formation costs large amounts of capital and resu...

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Bibliographic Details
Published in:Petroleum science and technology 2012-06, Vol.30 (17), p.1755-1767
Main Authors: Hosseini-Nasab, S. M., Sefti, M. Vafaie, Mohammadi, A.
Format: Article
Language:English
Subjects:
Applied sciences
Correlation
Crude oil
Crude oil, natural gas and petroleum products
Empirical analysis
empirical correlation
Energy
Exact sciences and technology
Expenses
Fuels
gravity method
hydrate formation pressure
Hydrates
Mathematical models
Natural gas
natural gas hydrate
Petroleum products, gas and fuels. Motor fuels, lubricants and asphalts
prediction
Processing of crude oil and oils from shales and tar sands. Processes. Equipment. Refinery and treatment units
SAS
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Summary:Hydrates are known to occur in a variety of natural-gas handling facilities and processing equipment in oil fields, refineries, and chemical plants when natural gas and water coexist at elevated pressure and reduced temperature. Prevention of hydrate formation costs large amounts of capital and results in large operating expenses. In order to avoid costly losses due to the formation of these hydrates, several methods, which include thermodynamic modeling and empirical correlations, can be employed to predict the conditions for hydrate formation. The authors employed SAS (SAS Institute, Cary, North Carolina) to develop a new correlation for predicting the hydrate-formation temperatures for both pure and mixture of hydrocarbon systems using the gravity method. The method correlates the hydrate-formation pressure against specific gravity, pressure, and water-vapor pressure.
ISSN:1091-6466
1532-2459
DOI:10.1080/10916466.2010.542425