... film. This wall film can have a profound effect on the hydraulic roughness experienced by the gas, and subsequently the frictional pressure drop. Furthermore, the data showed that this effect was particularly important for high liquid viscosities and in three-phase flows, and simulations showed...

... ABSTRACT We consider the apparent roughness and increased pressure drop associated with the presence of a thin liquid film between the gas and the pipe wall in two- and three-phase stratified-annular gas-liquid flow. The main objective is to improve the pressure drop predictions for near...

... fraction production logging frictional pressure drop bhr group 18 test section wall roughness normalized pressure drop three-phase effect production control normalized frictional pressure drop pressure drop production monitoring droplet graph usl pipe roughness reservoir surveillance...

...Pressure drop in low liquid loading flows the effect of a thin liquid film on the pipe wall D Biberg, C Lawrence, G Staff Schlumberger Norway Technology Center, Norway H Holm Statoil ASA, Norway ABSTRACT We consider the apparent roughness and increased pressure drop associated with the presence...

... 2011 uncertainty analysis condensate uncertainty parameter offshore pipeline roughness systematic approach base case flow assurance trunkline pressure drop functional requirement risk item hydraulic roughness heat transfer coefficient survey data Shtokman flow assurance challenges...

... diameter tubes. (2) Liquid film transport by secondary flow. In this mechanism, a secondary flow in the gas phase is created as a result of the variation of wave height on the liquid film around the periphery. The differences in wave height give differences in the apparent roughness of the interface...