..., and in subsequent operations, to instrument and monitor flow and fluid behaviour both for the benefit of the operation and for validation and improvement of models used in design. diameter pipe production logging instrumentation multiphase 11 flow metering bhr group 2018 upstream oil & gas...

... 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...

... was found for angles from near-horizontal to vertical. The model was compared with published wellbore load-up data and was found to give as good or better predictions than the Turner model. The new model also properly accounts for pipe inclination, diameter, and surface tension effects. pressure drop...

... along the annulus. The study is limited to drilling with water-based muds. diameter well control mud circulation rate annular pressure drilling society of petroleum engineers bhr group 2018 fluctuation weight method psia bottomhole pressure upstream oil & gas circulation rate...

.... solid concentration upstream oil & gas karabela model slurry particle size distribution bhr group 2018 flow loop spatial particle size distribution deposition velocity prediction concentration concentration profile pipe invert application sample concentration particle size diameter...

... equilibrium finite element model friction force diameter oversize experimental result bhr group 2016 bypass pig pipeline pigging normal force upstream oil & gas geometry frictional force analytical model coefficient experiment Frictional forces during pigging of multiphase pipelines M H...

... to these models include fluid properties such as density, viscosity and surface tension, flow geometry such as diameter and inclination of the pipeline, and operating conditions such as superficial gas and liquid velocities. The outputs may be flow patterns, pressure gradients, liquid hold-up, etc...

... logging pipe solid transport slurry flow production monitoring multiphase flow solid particle oroskar prediction length scale particle bhr group 2014 us government upstream oil & gas fluid dynamics turian equation critical velocity diameter A new model for solids transport...

... with experimental observations. The models' predictions are most accurate when the liquid film height is used as input. upstream oil & gas particle single-phase model characteristic length scale production control stratified flow prediction input characteristic length scale diameter production...

.... A design example is given to illustrate the advantages of slug flow superposition. slug catcher diameter upstream oil & gas pressure drop slug length pipeline transient behavior bhr group 2014 pipeline system flowrate fluctuation index frequency liquid flow rate probability slug...

... terrain prediction upstream oil & gas riser pressure difference flow rate bhr conference slug modeling & simulation diameter grid size slug catcher liquid height unit cell model experiment experimental series amplitude pipeline transient behavior ledaflow Terrain slugging...

... to demonstrate, and quantify, diameter effects in single-phase flow. Further, the effects of DRA in two- and three-phase flow have been studied in a D=100mm pipe. The overall conclusion is that the drag reduction increases with the inlet fraction of the liquid that carries the DRA. INTRODUCTION This paper...

... a good agreement (max error 20%). upstream oil & gas pressure drop water cut probe entrainment multiphase 8 diameter liquid velocity gas liquid flow bhr group 2012 experiment production control flow metering production monitoring gas velocity droplet entrainment constant usl 0...

... projects (with longer pipeline lengths and with larger pipe diameters) can require even larger slugcatchers (e.g. 8000 to 10000 m3). The presence of a large slugcatcher will guarantee the continuous supply of gas to the downstream gas plant. The available literature on by-pass pigging is limited. Out [1...

... ABSTRACT Long liquid slugs reaching several hundreds pipe diameter may appear when transporting gas and liquid in horizontal and near horizontal pipes. The long slugs cause system vibration and separation difficulties that may lead to operational problems. Although mainly short hydrodynamic...