supported by the China National 863 Program (Grant No.2006AA09A106);the Doctoral Program of Higher Education of China (Grant No.20060425502);the National Natural Science Foundation of China (Grant No.50874116);Shandong Province Natural Science Foundation(Grant No.Z2007A01)
It is very important to understand the annular multiphase flow behavior and the effect of hydrate phase transition during deep water drilling. The basic hydrodynamic models, including mass, momentum, and energy conser...