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Keywords: annular flow
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Proceedings Papers

Publisher: BHR Group
Paper presented at the 11th North American Conference on Multiphase Production Technology, June 6–8, 2018
Paper Number: BHR-2018-039
... Annular flow is one of the most observed flow patterns in oil and gas production systems, thus understanding annular flow characteristics is of great importance. When gas flow velocity is low, depending on the rate of liquid, annular flow transitions to slug flow and an annular/pseudo-slug flow...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 11th North American Conference on Multiphase Production Technology, June 6–8, 2018
Paper Number: BHR-2018-219
... liquid flow pipe onset velocity string production logging pressure gradient gas flow rate flow metering flow rate graph production control annular flow production monitoring bhr group 2018 upstream oil & gas eccentricity two-phase flow reservoir surveillance usl 10mm pressure...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 11th North American Conference on Multiphase Production Technology, June 6–8, 2018
Paper Number: BHR-2018-245
... to the transition between annular flow and wavy annular/churn flow. Using this criterion as the basis, the film reversal point was well correlated by use of a modified Froude number, which was shown to give good results for pipes between 4 and 200 mm (1.5 and 8 in). Using this approach, a film reversal point...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 10th North American Conference on Multiphase Technology, June 8–10, 2016
Paper Number: BHR-2016-207
... Abstract Pressure gradients of concurrent upward air-water flow have been measured in a 25.4mm internal diameter vertical test section over a range of superficial air and liquid velocities. Several sub-regimes of annular flow (pulse/disturbance wave, ripple wave, partial wetting, and rivulet...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 10th North American Conference on Multiphase Technology, June 8–10, 2016
Paper Number: BHR-2016-259
... 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...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 10th North American Conference on Multiphase Technology, June 8–10, 2016
Paper Number: BHR-2016-433
... Abstract In oil and gas production, annular flow is a common flow regime found in wells and pipelines. Predicting erosion in multiphase flow is a challenging task as so many factors and phase interactions are involved. Computational Fluid Dynamics (CFD) offers a way to predict multiphase flow...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 9th North American Conference on Multiphase Technology, June 11–13, 2014
Paper Number: BHR-2014-A3
... quite well by commercial flow simulators but the flushing time showed discrepancies. annular flow production control bhr group 2014 pressure drop valve production logging test section olga 7 liquid holdup simulator experimental condition water case pressure gradient reservoir...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 8th North American Conference on Multiphase Technology, June 20–22, 2012
Paper Number: BHR-2012-A025
... Experiments for air-water flow with and without added foamers were performed in a 50 mm diameter 12 m long vertical pipe at ambient pressure. It was observed that adding foamers to water will lead to a lower pressure drop at superficial gas velocities below the transition limit from annular flow...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 7th North American Conference on Multiphase Technology, June 2–4, 2010
Paper Number: BHR-2010-B2
... ABSTRACT Forces on bends and T-joints have been measured in a one inch diameter horizontal air-water setup for all flow regimes. The highest force levels are observed in the slug flow regime, whereas annular flow gives the lowest force levels. The amplitude was measured to be between 1 and 10...
Proceedings Papers

Publisher: BHR Group
Paper presented at the 7th North American Conference on Multiphase Technology, June 2–4, 2010
Paper Number: BHR-2010-G2
... the predictions of liquid wetted wall fraction, film gravity center and flow pattern transition between stratified and annular flows. production control film holdup gravity center stratified flow prediction reservoir surveillance froude number upstream oil & gas film gravity center production...

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