Extension of a simple hydrodynamic slug flow model for transient hydrate kinetics

The formation and accumulation of natural gas hydrates in deep subsea pipelines is one of the most challenging flow assurance problems. Typical high-pressure/low-temperature operation conditions in deep subsea facilities promote rapid formation of gas hydrates. Recent observations in flow loop experiments in gas/water systems suggested a relationship between hydrate volume and flow regime on pressure drop. In the current work, a simple hydrodynamic slug flow model, based on fundamental multiphase flow concepts, is coupled with a transient hydrate kinetics model and a pressure drop model to study the effect of hydrate formation on slug flow in gas/water systems.