... Annular flow is one of the most observed flow patterns in oil and gas production systems, thus understanding annular flow characteristics is of great importance. When gas flow velocity is low, depending on the rate of liquid, annular flow transitions to slug flow and an annular/pseudo-slug flow...

... ABSTRACT Experiments were performed with propose of mapping the flow patterns in two-phase flow in an upward inclinable 60 mm ID and 6 m long Plexiglas pipe. Air and viscous oil were used as working fluids and degree of inclination changed from 10 ? to 78 ?. Measurements includes pressure drop...

... rarely considers a key multiphase flow characteristic – the flow pattern of the system. Incorporating this key variable would improve the confidence in the performance of LDHI for gas dominated systems and allow safer operations. The Additive and Hydrate at the Top of Line (AHToL) joint industry project...

... ABSTRACT This study investigates experimentally and theoretically the existence slugs for vertical co-current two-phase flow in large diameter vertical tubing and risers. The slug flow pattern implies the presence of Taylor bubbles separated by hydraulically sealed liquid slugs. Previous...

...-viscosity two-phase flow pattern transitions in horizontal and slightly inclined pipes. The objective of this study is to improve the modeling of stratified-smooth/ stratified-wavy flow pattern transition in horizontal and slightly inclined pipes for high-liquid-viscosity two-phase flow application...

... Abstract This paper discusses a transient solid-liquid two-phase flow modelling approach that was applied for real-time drilling hydraulic and cuttings transport calculation. The flow patterns are categorized into seven scenarios, and the flow pattern transition criteria are presented...

... 122 to 560 mPa s. The superficial gas and liquid velocities varied from 0.3 to 7 m/s and 0.05 to 0.7 m/s, respectively. Flow pattern, pressure gradient and liquid holdup data were acquired and compared with previous air-water experiments. Three different flow patterns have been identified based...

... production logging production monitoring reservoir surveillance formulation data correlation begg multiphase 10 implementation flow pattern production control holdup bhr group 2016 mathematical formulation point model calculation A comparison of 35 gas-liquid point models in a low-liquid...

... Perspex venturi tube. The results show that the mixing capacity of the blind-t is dependent on the inlet flow pattern and oil viscosity which consequently influences the phase dispersion and slip characteristics through the venturi section. Introduction The oil and gas industry is becoming increasingly...

... Abstract A probabilistic approach to oil-water flow patterns in horizontal pipelines is presented. An experimental dataset was compiled, and validated by means of OLGA Multiphase Toolkit 2014.3; moreover, an associated error was calculated comparing the reported hold up with its corresponding...

... the superficial liquid velocities varied from 0.005 m/s to 0.1 m/s. Flow visualization at high-pressure was also conducted to verify the flow pattern at high-pressure. Introduction In gas-liquid streams in pipes, the two phases adopt various geometrical distributions known as flow patterns. The flow pattern...

... production logging interface height flowline corrosion fluctuation water phase polymer drag reduction drag-reducing polymer multiph flow production control flow pattern oil-water flow riser corrosion pressure drop bhr group 2014 production monitoring horizontal pipe velocity profile...

... Abstract This paper shows that most steady state gas-liquid pipe flow pattern representations can be visualized as two directed graphs, one for the macroscopic mass balance and another for the momentum balance. These directed graphs overlap around nodes where hydrodynamic slip is generated...

... production chemistry production monitoring phase inversion pipe production control mixture velocity enhanced recovery inversion process chemical treatment fraction viscosity reservoir surveillance multiple emulsion emulsion fluid compatibility water-in-oil emulsion droplet size flow pattern...

... hydraulic jet pump multiphase pump flow pattern carbon dioxide co 2 variation flow fraction rotational frequency Investigation of sorption phenomena in multiphase conveying processes F Hatesuer1, T Groth1, M Reichwage3, D Mewes2, A Luke1 1 Institute of Thermodynamics, Leibniz University of Hanover...

... ABSTRACT The present work is aimed at the experimental measurement of the two-phase heat transfer coefficient in the intermittent horizontal gas-liquid flow pattern, as well as its comparison with some existing correlations. The intermittent flow pattern is very common in oil production flow...