... fractions are plotted against pipe volume; while the hydrate volume fractions are plotted against the liquid slurry volume. 2.1 Different insulation effects at 19% and 52% water cuts Two water cuts (19% and 52%) and two overall heat transfer coefficients (U = 5.5 W/(m2·K) and U = 386 W/(m2·K)) are studied...

... near-horizontal sections to measure the time-averaged liquid distribution and volume fractions. In this campaign, it was found that at high pressure, the slug flow region was very narrow. In particular, at low gas-liquid ratios, the prevailing flow regime was determined to be a kind of "pseudo slug...

.... Mass conservation is given by + = 0, i=g,h,w (1) where are the gas/oil/water densities, are the gas/oil/water bulk velocities and , are the gas/oil/water volume fractions. Momentum conservation is given by + = sin (2...

.../(m2.K)] Hh Hydrate enthalpy of formation [J/kg] j Phase superficial velocity [m/s] J Mixture superficial velocity [m/s] k Thermal conductivity [W/(m.K)] L Length [m] m Mass flow rate [kg/s] M Molar mass [kg/kmol] P Pressure [Pa] R Phase volumetric fraction S Wetted perimeter [m] T Temperature [K] eq...

... (2), especially for subsea applications. flow rate fraction void fraction production control multiphase 10 viscosity test point effectiveness ect system phase slip multiphase flow loop oil flow bhr group 2016 flow metering flow pattern test point viscous oil electrical...

... flow loop. Erosion in the range of 0.04 to 0.14 mils/lb of sand was observed. upstream oil & gas entrainment bhr group 2014 reservoir surveillance orifice plate liquid fraction droplet production control fraction liquid film inlet circumferential angle inch upstream production...

.... intermittency force balance production monitoring slip node separated flow production logging upstream oil & gas representation bhr group 2014 mass balance flow pattern gas core pipe segment area fraction artificial intelligence node 2 equation slug flow fraction reservoir surveillance...

... pipe diameter drilling fluids and materials continuous phase pipe flow inversion water cut upstream oil & gas production chemistry production monitoring phase inversion pipe production control mixture velocity enhanced recovery inversion process chemical treatment fraction...

... extent of liquid-gas separation. The geometry of those systems has a downward annular flow that can contribute not only for instabilities such as severe slugs, but also to an excessive gas fraction at pump intake, causing the phenomenon known as gas-lock. This study intends to characterize the fluid...

...Pseudo component model to calculate retrograde behaviour of gas mass fraction E Smith, E Dudley, D Erickson MSi Kenny, USA A fast pseudo-composition model is put forth to accurately predict the gas mass fraction (GMF) of production fluid. This model accurately predicts retrograde behaviour...

... drop is predicted with acceptable accuracy. The key closure relations for a unit cell slug flow model include: Gas volume fraction and velocity in slugs Taylor bubble front velocity (slug tail velocity) Extra wall friction behind the slug front Wall friction factor in the slug zone Wall...

... (1-4 m/s) did not give large entrained droplet fractions. The effect of water is to reduce the entrainment and pressure drop. OLGA predicts the pressure drop quite well. 1. INTRODUCTION In order to design multiphase transport lines it is important to predict the transport of each phase...

... (Hewitt, 2005). In both horizontal and vertical pipe flows, the phases can assume various geometric patterns or topologies (e.g. bubbly, slug, annular, mist) depending on the phasic volumetric flow rates, pipe diameter and inclination. In addition, the relative phasic volumetric fraction can change along...

... characteristic and isothermal efficiency of the MPP are determined according to thermodynamics. efficiency upstream oil & gas fraction sorption phenomenon loss flow solubility gas fraction mpp pressure difference multiphase 7 bhr group 2010 artificial lift system gap flow experiment...

.... This concentration range can be regarded to be from a concentration of about 0.5 x the maximum packing fraction to a concentration close to the maximum packing fraction. We assume that a certain average dispersion concentration is prepared and tested in the rheometer. A certain bottom concentration is selected...