Effect of liquid viscosity on flow patterns of gas–liquid two-phase flow in a horizontal pipe

Matsubara, Hiroaki; Naito, Kazuki

doi:10.1016/j.ijmultiphaseflow.2011.08.001

Cited by 48 publications

(21 citation statements)

References 9 publications

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“…Previous experimental studies on high viscosity liquid-gas horizontal flows have identified hydrodynamic slug flow as the commonest flow regime encountered over a wide range of different flow conditions [1][2][3]. Unfortunately, mechanistic models currently used for designing and analysing the performance of oil production pipelines and their support systems are not suitable for simulating the characteristics of high viscosity oil-gas systems.…”

Section: Introductionmentioning

confidence: 99%

Application of the gamma radiation method in analysing the effect of liquid viscosity and flow variables on slug frequency in high viscosity oil-gas horizontal flow

Okezue¹

2013

Computational Methods in Multiphase Flow VII

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Published experimental observations of high viscosity liquid-gas horizontal flows have indicated that hydrodynamic slug flow is the commonest flow regime encountered over a wide range of flow conditions. Since hydrodynamic slugging generates high pressure fluctuations capable of damaging production pipelines, it is necessary to understand the complex characteristics of high viscosity slug flow regime through the analysis of one of its key parameters namely, slug frequency.Investigating slug parameters is crucial, especially when existing slug flow models used in the Petroleum Industry are not suitable for predicting the behaviour of high viscosity oil-gas flow. This is because most existing empirical correlations for predicting slug parameters are based on low viscosity liquid-gas flows which have different hydrodynamic features compared to high viscosity liquid-gas flows.In Cranfield University, an experimental investigation of high viscosity oil-air flow was performed to study the effect of liquid viscosity and flow variables on hydrodynamic slug flow. Experiments were conducted at liquid superficial velocities (V so ) and gas superficial velocities (V sg ) ranging from 0.06 m/s to 2.0 m/s and 0.0 m/s to 4.0 m/s respectively. For each experimental run, a singlebeam gamma densitometer was used to measure slug frequency. The effect of liquid viscosity (μ) on the measured slug frequency was investigated for the range of 1100 cP to 4000 cP. When compared against measured high viscosity slug frequency data, none of the existing empirical correlations used were able to produce accurate predictions. The predicted results tend to diverge from experimental data by several orders of magnitude. Given this context, a new Computational Methods in Multiphase Flow VII 447 empirical correlation for slug frequency was proposed. The new empirical slug frequency correlation was compared against an independent experimental dataset. The comparison indicated that the new empirical correlation performed better than existing correlations in predicting slug frequency of high viscosity liquid-gas flows.

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Section: Introductionmentioning

confidence: 99%

Application of the gamma radiation method in analysing the effect of liquid viscosity and flow variables on slug frequency in high viscosity oil-gas horizontal flow

Okezue¹

2013

Computational Methods in Multiphase Flow VII

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“…Matsubara & Naito (2011) investigated the influence of the liquid viscosity on flow pattern maps, in order to verify the findings of Weisman et al (1979), which, as previously mentioned, stated that such maps do not change much with the increase in the referred property. They performed experiments in a 19m long 22mm internal diameter pipe using air as the gas phase.…”

Section: Influence Of the Liquid Viscosity On Gas-liquid Horizontal Fmentioning

confidence: 80%

“…For the liquid, they considered water and some aqueous solution of polysaccharide thickener, whose viscosity had values of 100cp, 250cp, 2500cp, 7500cp and 11000cp. Matsubara & Naito (2011) found out that increasing the liquid viscosity makes the flow pattern maps differ significantly from those produced through the Taitel & Dukler (1976) method.…”

Section: Influence Of the Liquid Viscosity On Gas-liquid Horizontal Fmentioning

confidence: 99%

“…For viscous oil-gas flows, an added difficulty is related to the high oil viscosity, which induces several effects on the interfacial dynamics that directly impacts the interfacial shear stress (Andritsos & Hanratty, 1987b;Newton et al, 1999;Matsubara & Naito, 2011). Furthermore, most of the literature correlations for such variable were empirically created based on air-water flows experimental data.…”

Section: Worldmentioning

confidence: 99%

“…This is seen mainly through the displacement in the maps, for increasing liquid viscosities, of the stratified and roll wave regions for intermittent and annular flows, respectively. In addition, Matsubara & Naito (2011) observed that the predictions of the Taitel & Dukler (1976) flow map for high-viscosity oils improve if one considers that the interfacial friction factor is various orders of magnitude higher than the gas friction factor.…”

Section: Influence Of the Liquid Viscosity On Gas-liquid Horizontal Fmentioning

confidence: 99%

See 2 more Smart Citations

Optimization of the Interfacial Shear Stress and Assessment of Closure Relations for Horizontal Viscous Oil-Gas Flows in the Stratified and Slug Regimes

PASQUALETTE¹

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Marcelo de Alencastro PasqualetteThe author graduated in Mechanical Engineering from the Federal University of Rio de Janeiro in 2015 with the cum laude honor. In the former, the author received a PIBIC-CNPq scholarship for two years and an ANP PRH-37 scholarship for other two years. He has been working at the SINTEF Institute of Brazil for four years in the areas of multiphase flow, thermodynamics and flow assurance. He has eight complete papers published at conferences and two peer-reviewed articles published at journals.

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Flow Pattern, Liquid Holdup and Pressure Drop of Gas-Liquid Two-Phase Flow with Different Liquid Viscosities

Liu

Liao

Zhang

et al. 2019

Computational and Experimental Simulations in Engineering

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Effect of liquid viscosity on flow patterns of gas–liquid two-phase flow in a horizontal pipe

Cited by 48 publications

References 9 publications

Application of the gamma radiation method in analysing the effect of liquid viscosity and flow variables on slug frequency in high viscosity oil-gas horizontal flow

Application of the gamma radiation method in analysing the effect of liquid viscosity and flow variables on slug frequency in high viscosity oil-gas horizontal flow

Optimization of the Interfacial Shear Stress and Assessment of Closure Relations for Horizontal Viscous Oil-Gas Flows in the Stratified and Slug Regimes

Flow Pattern, Liquid Holdup and Pressure Drop of Gas-Liquid Two-Phase Flow with Different Liquid Viscosities

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