A major contribution to the stateoftheart for those interested in multiphase flow in wellbore drilling cutting hydrate andor acid gas involvements The author is a leading researcher on the topics presented and his development of gasliquid flow pattern transition mechanism and multiphase flow models are major contributions to the multiphase flow in wellbore Focuses on acid gas and hydrate involvements offering the latest results from drilling engineering computation research Presents an eme