1-20 of 20
Keywords: holdup
Close
Sort by
Proceedings Papers

Publisher: BHR Group
Paper presented at the 11th North American Conference on Multiphase Production Technology, June 6–8, 2018
Paper Number: BHR-2018-203
... & gas pipe diameter translational velocity pressure drop existence two-phase flow production control production logging flow pattern production monitoring slug flow bhr group 2018 energy density taylor bubble holdup university of tulsa mixture velocity transition probability density...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 11th North American Conference on Multiphase Production Technology, June 6–8, 2018
Paper Number: BHR-2018-281
... calculation of even steady-state holdups under conditions of large pipe inclination and three-phase flow. Other comparisons across simulators, and against experimental or field data, suggest that divergences in prediction are attributable to a few aspects of modelling, such as regime transitions, interfacial...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 10th North American Conference on Multiphase Technology, June 8–10, 2016
Paper Number: BHR-2016-033
... as the neglected dynamic and hydraulic gradient terms in (24) are small compared to the gravity and friction terms. Eliminating the pressure gradient among (57) gives the corresponding holdup equations: + g sin = + + + (8) g sin = + (9) where = + is the liquid volume fraction. 2.2...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 10th North American Conference on Multiphase Technology, June 8–10, 2016
Paper Number: BHR-2016-179
... 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...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 10th North American Conference on Multiphase Technology, June 8–10, 2016
Paper Number: BHR-2016-271
... 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...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 10th North American Conference on Multiphase Technology, June 8–10, 2016
Paper Number: BHR-2016-285
... clusters of common modelling technology. The experimental pressure drops and liquid holdup were published by Lagiere et al. in 1984 on a total of 19 runs on a 361-km long subsea pipeline joining the, now decommissioned, North Sea offshore production platform of Frigg to the terminal at St Fergus...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 10th North American Conference on Multiphase Technology, June 8–10, 2016
Paper Number: BHR-2016-385
... Abstract In this paper we perform a comprehensive analysis of two- and three-phase large scale experimental data from the SINTEF Multiphase Laboratory on low liquid loading flows. The experimental work was financed by Statoil (" Experiments for low liquid loading with liquid holdup...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 10th North American Conference on Multiphase Technology, June 8–10, 2016
Paper Number: BHR-2016-403
... regimes can coexist in the pipe for extended time periods: one with a high holdup and one with a very low holdup. This is a critical matter for gas wells, because the discontinuous jump from low to high holdup marks the beginning of the end of the well's life (this phenomenon is sometimes referred...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 9th North American Conference on Multiphase Technology, June 11–13, 2014
Paper Number: BHR-2014-B3
... tomography (CT) system was utilised to measure holdups and phase distributions. The measurements from the X-ray CT system have been systematically analysed to illustrate how the oil viscosity impacts the flow characteristics, including axial and cross-sectional - particularly vertical- phase distribution...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 8th North American Conference on Multiphase Technology, June 20–22, 2012
Paper Number: BHR-2012-A005
.... For the DRA- study the test section was in all cases in a near horizontal position (-1o, 0o and +1o). Liquid holdups were measured using 2-energy, broad beam gamma densitometers, giving the time averaged water and oil holdups (cross-sectional phase fractions). 76 © BHR Group 2012 Multiphase 8 Figure 2...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 8th North American Conference on Multiphase Technology, June 20–22, 2012
Paper Number: BHR-2012-A006
..., commercial codes have been tested extensively for oil viscosities from 0.2 cP up to 20-50 cP, that is, condensate and light to medium oils. Large scale, high pressure data are not available for heavy oils. This means that there is a considerable uncertainty related to predictions of holdup, pressure drop...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 8th North American Conference on Multiphase Technology, June 20–22, 2012
Paper Number: BHR-2012-A011
... assumption for both pressure drop and liquid holdup in slugging systems, in favor of transient pressure drop and liquid holdup. Using fluid properties and flow parameters, we introduce an energy balance equation to update the temperature profile of the pipeline, accounting for the exothermic nature...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 8th North American Conference on Multiphase Technology, June 20–22, 2012
Paper Number: BHR-2012-A016
... reynolds number mixture velocity bypass pig pig velocity idelchik correlation bypass area holdup wall function liquid holdup production control pressure drop coefficient production monitoring simulation upstream oil & gas pipeline pigging bypass reservoir surveillance...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 8th North American Conference on Multiphase Technology, June 20–22, 2012
Paper Number: BHR-2012-A017
... 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...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 8th North American Conference on Multiphase Technology, June 20–22, 2012
Paper Number: BHR-2012-A020
... In this study, the occurrence of multiple solutions in stratified flows was investigated. The model equations give multiple holdup solutions for certain flow regimes – in small angle upflows with low liquid velocity (low liquid loading) and with low to moderate gas velocity. We applied a steady...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 8th North American Conference on Multiphase Technology, June 20–22, 2012
Paper Number: BHR-2012-A022
... liquid velocity production monitoring holdup holdup solution slug flow hydrodynamic slug flow point model bhr group 2012 production control stratified region transition production logging pipeline transient behavior upstream oil & gas slip velocity slug catcher reservoir surveillance...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 7th North American Conference on Multiphase Technology, June 2–4, 2010
Paper Number: BHR-2010-F2
... geometry flow rate liquid flow rate bhr group 2010 artificial intelligence slug frequency equation holdup gas flow rate terrain upstream oil & gas riser momentum balance inlet pressure sl 0 experiment Dynamic multiphase flow models for control C Martins da Silva 1,3, F Dessen 2, O J...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 7th North American Conference on Multiphase Technology, June 2–4, 2010
Paper Number: BHR-2010-G3
... experiments. Experimental flow regimes were determined using time series from a traversable gamma densitometer. Phase holdups were determined using either the traversable gamma densitometer or the stationary gamma densitometer. Pressure drops were measured using pressure transducers. regime...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 7th North American Conference on Multiphase Technology, June 2–4, 2010
Paper Number: BHR-2010-I1
... 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...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 7th North American Conference on Multiphase Technology, June 2–4, 2010
Paper Number: BHR-2010-J1
... of closure relationship uncertainties on multiphase flow model predictions. As a case study, we examined the impact of slug length uncertainty on pressure drop and liquid holdup predictions of Tulsa University Fluid Flow Projects (TUFFP) Unified Model(1) for two-phase vertical flows. The results suggest...

Product(s) added to cart

Close Modal