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Prevent system hydrate formation during sudden depressurization

01 November 2016
Author :   FARSA Energy Jonoob

B. Asadizeydabadi a,*, M. Haghshenas b , S. Roshani c,

M. Moshfeghian d

a Shell Global Solutions International B.V., Shell Development Iran B.V., Tehran – Iran

b Chemical and Process Engineering Department, Namvaran Management and Engineering, Tehran – Iran

c Process Engineering Department, Petrochemical Industries Design & Engineering Co., PIDEC, Shiraz – Iran

d John M Campbell & Company, Norman, Oklahoma USA


A concise and accurate methodology has been developed using well known software packages to predict the type and amount of inhibitor required during sudden depressurization of a system to prevent hydrate formation. The outlined procedure exhibits the P-T history of the system and hence the hydrate formation temperature profile. A practical example of using such procedure clearly indicates the ease and accuracy of designing a hydrate inhibition package for any units in the gas, oil and petrochemical industries. © 2006 Hydrocarbon Processing®