A method and apparatus for determining a level of stratification of a multiphase fluid flow passing through a pipe is provided. The method includes, and the apparatus is operable to perform, the steps of: 1) determining a flow velocity of the multiphase fluid flow passing through a first radial region...http://www.google.com.au/patents/US7962293?utm_source=gb-gplus-sharePatent US7962293 - Apparatus and method for providing a stratification metric of a multiphase fluid flowing within a pipe
