... and better computational efficiency, as it applies the CH equation for the liquid-gas interface and as it applies the Discontinuous Galerkin (DG) discretization method. The model predictions have been validated against the spinodal decomposition and the rising bubble test case. The model was also evaluated...

... costs to the project and minimizing them can be of utmost importance to a safe and profitable operation. nucleation droplet hydrate cut hydrate formation relation emulsion hydrate particle pbm framework equation viscosity slurry viscosity expression upstream oil & gas flow...

... control experimental data correlation production logging multiphase flow production monitoring entrainment fraction droplet entrainment two-fluid model equation prediction wave celerity pressure drop superficial gas velocity reservoir surveillance upstream oil & gas entrainment rate...

... & simulation upstream oil & gas boundary point pig velocity equation boundary condition bypass pig pig-generated slug bypass time step pig motion two-fluid model liquid slug holdup bhr group mpt2019 discretization eigenvalue pipeline pigging Simulation of slug propagation for by-pass...

... upstream oil & gas low liquid loading water fraction liquid film annular stratified flow pipe wall pressure drop annular flow equation multiphase production technology experiment international conference production logging production control liquid layer stratified layer viscosity...

... porosity deposition simulation remediation of hydrates fluid flow production logging scale remediation flow model deposit wax remediation olga upstream oil & gas coutinho equation production control Impact of Fluid Flow and Thermodynamic Wax Models on Multiphase Wax Deposition...

... the development of a mechanistic model which adopts thermal hydraulic calculations and the aging model for wax deposition predictions. A numerical finite element approach is used to solve systematic equations for mass, momentum and energy transfer in the pipeline. The effects of wax deposit parameters used...

... time. The algorithm primarily solves coupled mass, momentum and energy balances, shown in equation (1), to provide a transient framework for fluid-flow calculations. As such, the algorithm requires specification of a fixed inlet fluid composition, flowline bathymetry, and ambient seafloor conditions...

... been fixed in all cases. To our knowledge, this is the first 3D Direct Numerical Simulation on the present issue and serves as a proof of concept. 2 METHODOLOGY Using a Phase Field Model approach the equations that govern the behavior of the system are the incompressible Navier-Stokes (NS) equation...

..., a numerical interface sharpening algorithm is implemented within the Eulerian framework. The advantage is that the same governing equations are solved in the full domain. In order to derive the conservation equations of this hybrid model, the individual phases are distinguished. This is achieved...

... distribution. Figure 2: Liquid distribution in bubbly flow in stagnant liquid. The 3D picture on the right is generated from the WMS data. Figure 3 shows the slip velocity (calculated using equation (1)) plotted against the gas fraction for the 4" experiments at 45 and 70 bara. We notice that the slip velocity...

... in a vertical section of the pipe. Liquid and gas flow rates have been determined by means of semi-empirical equations developed for the specific set of flow parameters (geometry, flow rates, physical properties) adopted in a series of laboratory tests conducted in the Multiphase Flow Laboratory of TEA Sistemi...

... the corresponding generic friction law 1 = 2 log (7) which also constitutes the basis of the Colebrook equation (9). The modelling now focuses on determining the generic roughness length for various, flows, starting with single phase gas flow. Figure 2. Variation of the difference between the local...

... experiment reservoir surveillance production control bhr group 2015 upstream oil & gas supercritical flow biberg critical point equation holdup critical holdup flow rate simulation production logging liquid superficial velocity inclination international conference production...

... the liquid holdup in transport pipes is important so an accurate droplet model should be considered. droplet concentration profile bhr group 2015 production monitoring experimental data equation multiphase flow international journal concentration profile upstream oil & gas diameter...

... equation upstream oil & gas phase distribution bhr group 2015 multiphase flow simulation multiphase 17 liquid structure particle experimental data void fraction slug time series frequency reservoir surveillance artificial intelligence production monitoring Computational fluid...

... Navier-Stokes equations The flow modeling relies on a Level Set formulation (Dervieux & Thomasset, 1981, Osher &Sethian, 1988) of a two-fluid incompressible flow as introduced in Lesage et al, 2007. Let us consider the model problem of two turbulent incompressible immiscible fluids moving in a pipe under...

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... simulation reservoir surveillance simulation pressure profile equation taylor bubble bhr group 2013 production monitoring production control interface upstream oil & gas multiphase 16 pressure distribution mean velocity pressure variation spool Behaviour of slug flow and pressure force...

... modelling has been based directly on bulk conservation equations, supplemented with empirical closures for frictions and dispersions. Biberg (1) and Biberg et al (2) demonstrated how a parameterized cross sectional flow description can be integrated, yielding a so called pre-integrated 1D model...