..., intermittent flow is observed for flow in pipes with liquid velocities lower than the velocities for flow in annulus. downward flow production monitoring liquid velocity intermittent flow regime production control superficial velocity transition production logging flow regime pipe downward two...

... friction, and liquid-liquid dispersal. gas superficial velocity prediction slug superficial velocity upstream oil & gas flow regime field data holdup reservoir surveillance agreement interfacial friction liquid content bhr group 2018 multiphase 11 simulator inclination angle...

.../(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...

... to figure 2, which represents a typical flow pattern map relative to an upward vertical geometry [3]. Since the operating range of the flow meter is such that the gas superficial velocity is less than 3.5 and the liquid superficial velocity less than 1.5 , from figure 2, one can see that slug flow would...

... mechanistic models for better prediction of pressure gradient and liquid holdup. Also, present flow regime transition model can be applied to all inclination angles. international journal production monitoring inclination angle superficial velocity flow regime transition model taitel barnea...

... flow simulator OLGA. superficial velocity displacement bhr group 2014 production control upstream oil & gas experiment scenario hw water fraction production logging local water fraction measurement displacement experiment local water fraction scenario front propagation velocity...

... oscillations at riser base and slugging frequencies. The experimental results are compared with simulations with a multiphase flow simulator. upstream oil & gas production monitoring viscous liquid experiment superficial velocity amplitude si 0 production logging standard deviation liquid...

... source/sink term (J/kg/s) Sw Water phase source/sink term (kg/m/s) t Time (seconds) T Temperature (K) U Velocity (m/s) US Superficial velocity of phase (m/s) v Volume average velocity (m/s) x Horizontal coordinate Wetted angle (degrees) Joule-Thomson coefficient multiplied by Cp (Pa J/Kg) Tsub...

... are solved for each phase. In the oil and gas industry this model is reduced to 1D, and is commonly referred to as the "Mechanistic Model". slug production control interface slug flow slug frequency superficial velocity experiment lakehal production logging void fraction holdup production...

... cell, in a pipeline. This pipeline segment must then be joined with other pipeline segments upstream and downstream of it to form a ‘steady-state’ model for the pipeline. objective function simple model drift-flux model small perturbation equation reference frame superficial velocity...

... production control multiphase 7 slug holdup reservoir surveillance slug region bubble flow slug catcher transition nitrogen gas slug flow positive slope pipeline transient behavior danielson flow pattern map superficial velocity holdup drift-flux model bhr group 2010 slug body...

... that a ± 50% slug length uncertainty can result up to 40% uncertainty in pressure drop predictions for some operating conditions, and almost no uncertainty for others. bhr group 2010 sensitivity upstream oil & gas flow model multiphase flow superficial velocity production monitoring holdup...