... Greek Letters = Water surface elevation Viscosity Inclination angle Density = Surface tension Subscripts a = Air Fr = Froude number g = Gas L = Liquid Re = Reynolds Sg = Superficial gas SL = Superficial liquid TD = Taitel and Dukler V = Viscous © BHR Group 2016 Multiphase 10 3 1. INTRODUCTION Two...

... the model may be completely wrong if the flow pattern is not correct. equation fluid flow two-phase flow application bhr group 2016 solid bed transient solid-liquid two-phase flow mixture layer drilling operation conservation equation directional drilling simulation solid concentration...

... is the predominant flow regime in a gas condensate pipeline. In this paper we will assess the predictions of the OLGA HD 2015.1 flow model by comparison with two- and three-phase transient and pseudo-transient experiments. © BHR Group 2016 Multiphase 10 33 2 RAMP-UP AND THE CONNECTION TO MULTIPLE SOLUTIONS...

.... Inclination angle in the lateral section was varied 1 from the © BHR Group 2016 Multiphase 10 53 horizontal to simulate three well configurations, namely, toe-down, one-undulation with a sump, and one-undulation with a hump. Slug lengths and frequencies along the well were measured using fourteen...

... ( ; ;L G H ) Slug region ( ;B S ) Indexes L Dispersion B Bubble region eq Equilibrium ext External medium in Pipe inlet G Gas © BHR Group 2016 Multiphase 10 71 H Hydrate L Liquid m Mixture n Node index ov. Overall S Slug region sub Subcooling T Unit cell translation U Unit cell W Wall 2...

... viscosity of the film f,tot Total visocity of the film l Bulk viscosity of the liquid g Bulk viscosity of the gas Apparent turbulent viscosity f Mean density of film g Density of gas © BHR Group 2016 Multiphase 10 87 l Density of liquid Shear stress Char. shear stress (eqn. (14)) Interfacial...

... 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...

... upstream oil & gas reservoir surveillance pipe wall pipeline heating power installation sensor temperature differential production monitoring stationary bed production control hot spot production logging delta temperature artificial intelligence bhr group 2016 spool piece machine...

... multiphase mixture bhr group 2016 upstream oil & gas displacement signal production control measurement and control equation vdm Design and development of a novel, non-invasive instrument for measuring the density of multiphase mixtures O Obie, G P Lucas University of Huddersfield, School...

... salinity. However, the identification of this transition and the knowledge of the water salinity may represent additional problems in this type of measurements [1]. © BHR Group 2016 Multiphase 10 149 In a period of low oil price, the objective of the present work is to examine the main features of a very...

... to measure the effective viscosity. © BHR Group 2016 Multiphase 10 165 These methodologies for measuring emulsion viscosity generally fall into three categories; 1) bench-top viscometry, 2) bench-top flow through systems, 3) flow loop or pipeline systems. Each of the methodologies has their strengths...

... zakarian production control conductivity production logging bhr group 2016 equation film coefficient resistance ground biot number upstream oil & gas production monitoring burial depth pipeline liquid holdup holdup correlation biot number coefficient reservoir surveillance...

... production and transportation of hydrocarbons. bhr group 2016 liquid film reservoir surveillance pressure gradient upstream oil & gas superficial gas velocity vertical pipe pipe diameter annular flow regime production logging gas core production monitoring transition flow regime...

... a sufficient understanding to produce new models of this regime. © BHR Group 2016 Multiphase 10 207 2 THE EXPERIMENTAL APPARATUS 2.1 Construction The flow loop has been modified after being used for studies with small tubes (3, 4.) It now consists of a 3.7m long, nominal 25.4mm i.d. acrylic vertical test...

... (Maintenance): "The operator shall ensure that a pipeline is maintained in an efficient state, in efficient working order and in good repair." riser corrosion bhr group 2016 sensitivity study corrosion shear stress water holdup assessment wall shear stress inspection corrosion rate flowline...

... and the pressure management under these conditions was tested. differential pressure dissociation depressurization plug flow assurance prototype multiphase 10 characterization bhr group 2016 heating injection pressure communication hydrate stability curve electrically trace heating pipe...

..., periodic liquid structures of different time and length scales can lead to momentum fluctuation. In annular flow, disturbance waves at the interface and liquid droplet deposition/entrainment are © BHR Group 2016 Multiphase 10 245 responsible for the momentum flux fluctuation (3). In their experiments...

... holdup over these lengths becomes significantly important. production monitoring bhr group 2016 liquid holdup production logging upstream oil & gas downward flow vertical downward flow liquid velocity pressure gradient production control annular flow oil 586 flow rate flow...

... upstream oil & gas holdup variation single bend holdup bhr group 2016 production control configuration setup measurement bend fluid force multiphase 10 spectrum production logging Multiphase forces on bend structures- influence of upstream disturbance S P C Belfroid, E Nennie TNO...

... 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...