We present a theoretical model describing the agglomeration process between hydrate particles in systems composed of water in crude oil emulsions. This model allows prediction of the evolution of physical properties of the liquid phase during hydrate formation as the apparent viscosity, the density and the fraction of water converted into hydrate. Results from this model are compared with experimental results obtained with an acidic crude oil in a 2'' x 140 m multiphase pilot loop under steady state flow conditions. The kinetics of gas dissolution in the oil phase depends on flow conditions. Under liquid flow conditions, contact between the liquid phase and the gas phase takes place, in the pilot loop, only in the separator. In real pipelines, this mechanism can be encountered during shutdown and at the beginning of start-up. Under steady state multiphase flow conditions, kinetics of gas dissolution can be neglected. We can notice that the lower the temperature of formation, the smaller the characteristic time of hydrate formation.
Model of hydrates agglomeration - application to hydrates formation in an acidic crude oil
Multiphase Production Technology '05, 12 ; 525-540
2005
16 Seiten, 5 Bilder, 2 Tabellen, 15 Quellen
Aufsatz (Konferenz)
Englisch
Making more of methane hydrates
British Library Online Contents | 1999
Gas Storage and Transport Using Hydrates
British Library Conference Proceedings | 1997
|Le microscope accepte les echantillons hydrates
British Library Online Contents | 1996
Experimental Investigation on Formation and Blockage of HCFC-141b Hydrates in Pipeline
British Library Online Contents | 2008
|Surface chemistry and gas hydrates in flow assurance
Tema Archiv | 2011
|