... to the transition between annular flow and wavy annular/churn flow. Using this criterion as the basis, the film reversal point was well correlated by use of a modified Froude number, which was shown to give good results for pipes between 4 and 200 mm (1.5 and 8 in). Using this approach, a film reversal point...

... logging reservoir surveillance test section pipe bhr group 2018 pressure drop froude number fraction equation upstream oil & gas flow regime experiment slug flow production control production monitoring pressure drop prediction ledaflow 2 viscous oil system pseudo slug flow Pseudo...

... orifice orifice liquid viscosity transition production control equation viscosity froude number Is it possible to reduce the cost (and increase the accuracy) of multiphase flow meters? P Andreussi University of Pisa, Italy M Bonizzi, P Ciandri TEA Sistemi, Italy ABSTRACT In the present paper...

... the predictions of liquid wetted wall fraction, film gravity center and flow pattern transition between stratified and annular flows. production control film holdup gravity center stratified flow prediction reservoir surveillance froude number upstream oil & gas film gravity center production...