Slug Translational Velocity for Highly Viscous Oil and Gas Flows in Horizontal Pipes

Yahaya D. Baba, Archibong Archibong-Eso, Aliyu M. Aliyu, Olawale T. Fajemidupe, Joseph X.F. Ribeiro, Liyun Lao, Hoi Yeung

Research output: Contribution to journalArticle

Abstract

Slug translational velocity, described as the velocity of slug units, is the summation of the maximum mixture velocity in the slug body and the drift velocity. Existing prediction models in literature were developed based on observation from low viscosity liquids, neglecting the effects of fluid properties (i.e., viscosity). However, slug translational velocity is expected to be affected by the fluid viscosity. Here, we investigate the influence of high liquid viscosity on slug translational velocity in a horizontal pipeline of 76.2-mm internal diameter. Air and mineral oil with viscosities within the range of 1.0–5.5 Pa·s were used in this investigation. Measurement was by means of a pair of gamma densitometer with fast sampling frequencies (up to 250 Hz). The results obtained show that slug translational velocity increases with increase in liquid viscosity. Existing slug translational velocity prediction models in literature were assessed based on the present high viscosity data for which statistical analysis revealed discrepancies. In view of this, a new empirical correlation for the calculation of slug translational velocity in highly viscous two-phase flow is proposed. A comparison study and validation of the new correlation showed an improved prediction performance.

Original languageEnglish
Article number170
Number of pages20
JournalFluids
Volume4
Issue number3
DOIs
Publication statusPublished - 12 Sep 2019
Externally publishedYes

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gas flow
Flow of gases
Oils
oils
Pipe
viscosity
Viscosity
Viscosity of liquids
liquids
densitometers
Densitometers
mineral oils
Mineral Oil
performance prediction
Fluids
fluids
Mineral oils
two phase flow
predictions
Two phase flow

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Baba, Y. D., Archibong-Eso, A., Aliyu, A. M., Fajemidupe, O. T., Ribeiro, J. X. F., Lao, L., & Yeung, H. (2019). Slug Translational Velocity for Highly Viscous Oil and Gas Flows in Horizontal Pipes. Fluids, 4(3), [170]. https://doi.org/10.3390/fluids4030170
Baba, Yahaya D. ; Archibong-Eso, Archibong ; Aliyu, Aliyu M. ; Fajemidupe, Olawale T. ; Ribeiro, Joseph X.F. ; Lao, Liyun ; Yeung, Hoi. / Slug Translational Velocity for Highly Viscous Oil and Gas Flows in Horizontal Pipes. In: Fluids. 2019 ; Vol. 4, No. 3.
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Baba, YD, Archibong-Eso, A, Aliyu, AM, Fajemidupe, OT, Ribeiro, JXF, Lao, L & Yeung, H 2019, 'Slug Translational Velocity for Highly Viscous Oil and Gas Flows in Horizontal Pipes', Fluids, vol. 4, no. 3, 170. https://doi.org/10.3390/fluids4030170

Slug Translational Velocity for Highly Viscous Oil and Gas Flows in Horizontal Pipes. / Baba, Yahaya D.; Archibong-Eso, Archibong; Aliyu, Aliyu M.; Fajemidupe, Olawale T.; Ribeiro, Joseph X.F.; Lao, Liyun; Yeung, Hoi.

In: Fluids, Vol. 4, No. 3, 170, 12.09.2019.

Research output: Contribution to journalArticle

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T1 - Slug Translational Velocity for Highly Viscous Oil and Gas Flows in Horizontal Pipes

AU - Baba, Yahaya D.

AU - Archibong-Eso, Archibong

AU - Aliyu, Aliyu M.

AU - Fajemidupe, Olawale T.

AU - Ribeiro, Joseph X.F.

AU - Lao, Liyun

AU - Yeung, Hoi

PY - 2019/9/12

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N2 - Slug translational velocity, described as the velocity of slug units, is the summation of the maximum mixture velocity in the slug body and the drift velocity. Existing prediction models in literature were developed based on observation from low viscosity liquids, neglecting the effects of fluid properties (i.e., viscosity). However, slug translational velocity is expected to be affected by the fluid viscosity. Here, we investigate the influence of high liquid viscosity on slug translational velocity in a horizontal pipeline of 76.2-mm internal diameter. Air and mineral oil with viscosities within the range of 1.0–5.5 Pa·s were used in this investigation. Measurement was by means of a pair of gamma densitometer with fast sampling frequencies (up to 250 Hz). The results obtained show that slug translational velocity increases with increase in liquid viscosity. Existing slug translational velocity prediction models in literature were assessed based on the present high viscosity data for which statistical analysis revealed discrepancies. In view of this, a new empirical correlation for the calculation of slug translational velocity in highly viscous two-phase flow is proposed. A comparison study and validation of the new correlation showed an improved prediction performance.

AB - Slug translational velocity, described as the velocity of slug units, is the summation of the maximum mixture velocity in the slug body and the drift velocity. Existing prediction models in literature were developed based on observation from low viscosity liquids, neglecting the effects of fluid properties (i.e., viscosity). However, slug translational velocity is expected to be affected by the fluid viscosity. Here, we investigate the influence of high liquid viscosity on slug translational velocity in a horizontal pipeline of 76.2-mm internal diameter. Air and mineral oil with viscosities within the range of 1.0–5.5 Pa·s were used in this investigation. Measurement was by means of a pair of gamma densitometer with fast sampling frequencies (up to 250 Hz). The results obtained show that slug translational velocity increases with increase in liquid viscosity. Existing slug translational velocity prediction models in literature were assessed based on the present high viscosity data for which statistical analysis revealed discrepancies. In view of this, a new empirical correlation for the calculation of slug translational velocity in highly viscous two-phase flow is proposed. A comparison study and validation of the new correlation showed an improved prediction performance.

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Baba YD, Archibong-Eso A, Aliyu AM, Fajemidupe OT, Ribeiro JXF, Lao L et al. Slug Translational Velocity for Highly Viscous Oil and Gas Flows in Horizontal Pipes. Fluids. 2019 Sep 12;4(3). 170. https://doi.org/10.3390/fluids4030170