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Keywords: void fraction
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Proceedings Papers

Publisher: BHR Group
Paper presented at the 18th International Conference on Multiphase Production Technology, June 7–9, 2017
Paper Number: BHR-2017-309
... functions. The flow rates were prescribed at the inlet through the superficial velocities and by means of the liquid hold-up. To specify the liquid holdup a value for the void fraction of 1 was defined for the annular film and 0 in the gas core. At the wall the no slip condition was applied for the velocity...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 18th International Conference on Multiphase Production Technology, June 7–9, 2017
Paper Number: BHR-2017-345
... (l/sec) qw = water flow rate (l/sec) usg = gas superficial velocity (m/s) usl = liquid superficial velocity (m/s) = pressure change due to friction (bar) pGLV = pressure change through the GLV (bar) = void fraction 1 INTRODUCTION Gas-lift is one of the most common artificial lift techniques...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 17th International Conference on Multiphase Production Technology, June 10–12, 2015
Paper Number: BHR-2015-B2
... and the existence of the two phases with significantly different densities. As the fluid passes through curved pipes or bends, a considerable centrifugal force is applied to the mixture forcing it to separate. Separation is affected by the orientation of the bend giving rise to complications such as void fraction...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 17th International Conference on Multiphase Production Technology, June 10–12, 2015
Paper Number: BHR-2015-D4
... Sensor (WMS) to validate CFD results for multiphase flow in larger diameter pipes including slug and churn flows in horizontal and vertical pipes. WMS is a state-of-the-art device which yields instantaneous void fraction distributions at pipe cross-sections. Several case studies in slug and churn flow...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 16th International Conference on Multiphase Production Technology, June 12–14, 2013
Paper Number: BHR-2013-J3
... catenary riser void fraction separator pressure riser bhr group 2013 upstream oil & gas flexible pipe pipeline international journal china university experiment hybrid riser simulation cranfield university Modelling and validation of severe slugging in laboratory pipeline-riser systems...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 15th International Conference on Multiphase Production Technology, June 15–17, 2011
Paper Number: BHR-2011-D1
... of the mixer (Figure 3). The first two meters can measure any of the two-measurement combinations listed above so as to provide the mixture void fraction and flow rate; the third meter is needed for additional information about one of the phase fractions. In order to determine the individual phases flow rates...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 14th International Conference on Multiphase Production Technology, June 17–19, 2009
Paper Number: BHR-2009-E4
... at the top to create a transient response. The resulting transient pressure data were analysed using well test interpretation methods. The steady state pressure and void fraction, measured along the tube, were used to validate GRAMP-2, a steady state wellbore modelling code based on flow regime prediction...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 13th International Conference on Multiphase Production Technology, June 13–15, 2007
Paper Number: BHR-2007-A1
... in comparison to typical requirements for oil and gas production and the effect that an upstream pipeline would have on flow in the riser section was not examined. 1.3 Objectives of the present work In this paper, time varying void fraction data and flow pattern information for nitrogen/naphtha flow...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 12th International Conference on Multiphase Production Technology, May 25–27, 2005
Paper Number: BHR-2005-A4
... production technology 12 void fraction production monitoring regime map validation experimental data annular liquid superficial velocity upriser flow regime map superficial velocity gas superficial velocity An experimental method for the prediction of slug-churn transition in two-phase flow...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 12th International Conference on Multiphase Production Technology, May 25–27, 2005
Paper Number: BHR-2005-B1
... production technology 12 entrance artificial lift system production logging correlation centrifugal pump pump performance impeller production control reservoir surveillance flow rate upstream oil & gas diameter elongated bubble gas-liquid mixture bhr group 2005 void fraction pump...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 12th International Conference on Multiphase Production Technology, May 25–27, 2005
Paper Number: BHR-2005-F1
... the void fraction downstream of it. It can be applied in gas lifted wells or naturally producing wells with associated gas. In an 18 m high, 72 mm diameter test facility at Shell E&P Technology in Rijswijk several bubble breaker designs have been tested under a wide range of flow conditions...

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