Low concentration sand transport in multiphase viscous horizontal pipes: An experimental study and modeling guideline

Najmi, Kamyar; McLaury, Brenton S.; Shirazi, Siamack A.

doi:10.1002/aic.15131

Cited by 13 publications

(8 citation statements)

References 25 publications

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“…This analysis supports the selection of outlet that is 2m apart from the inlet which is a perfect location for obtaining the results for various flow-related parameters. The similar trends of pressure loss have also been presented by many investigators (Dabirian et al, 2018, Kamyar Najmi et al, 2012, Leporini et al, 2019.…”

Section: Pressure Loss In Numerical Simulation and Validationsupporting

confidence: 85%

Experimental and Numerical analysis of Flow characteristics of sand water slurry in a horizontal pipe

Singh

Kumar

Ratha

2021

JER is an international, peer-reviewed journal that publishes f

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The transportation of the solid material using hydraulic transportation method is economically the best method. The head loss occurs during transportation of slurry through horizontal pipelines usually depends on the rheological behavior of slurry, slurry concentration, particle size, and influx velocity. An experimental investigation has been performed using sand-water slurry flowing through the horizontal pipe section of a pilot plant test loop. The head loss obtained from the experimental results was validated through CFD simulation using FLUENT. The solid concentration of sand-water slurry and influx velocity used during both experiments and numerical simulation were in the range of 10-40% (by weight) and 1 to 4 m/s respectively. The numerical simulations were performed using five different turbulence models and the results obtained using SST k-omega model was in close agreement with experimental results. It is observed from both the experiment and numerical analysis that the pressure loss, granular pressure, volume fraction and skin fraction coefficient during transportation of slurry through a horizontal pipe is a function of solid concentration and influx velocity. The present study observed that as the flow velocity increases four times, the pressure loss is increasing more than 10 times. Uniform volume fraction at middle zone of outlet of the pipe is observed as both the slurry concentration and velocity of flow increases.

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Section: Pressure Loss In Numerical Simulation and Validationsupporting

confidence: 85%

Experimental and Numerical analysis of Flow characteristics of sand water slurry in a horizontal pipe

Singh

Kumar

Ratha

2021

JER is an international, peer-reviewed journal that publishes f

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“…Dabirian et al 2016 [30] 45-600 0.025-1% 97 Najmi et al 2016 [31] 20-300 0-1% 50 Najmi et al 2016 [32] 150-300 0.01-0.1% 50-100 Dabirian et al 2018 [33] 150-600 0-1% 50 Dabirian et al 2018 [34] 45-600 0.025-1% 97 Tebowei et al 2018 [35] 255 0.04% 100 Fajemidupe et al 2019 [36] 212-800 0-0.006% 50.4 Leporini et al 2019 [37] 100-1100 0.0065-0.056% 63 Leporini et al 2019 [38] 45-600 0.00161-0.0538 50-100…”

Section: References Sand Size (µM) Sand Concentration (%) Pipe Diametmentioning

confidence: 99%

“…Effect of Reynolds number on the hydraulic gradient in sand-slurry flows (a) Set-up for experiments[32] and (b) comparison between experiments[32] and simulations.…”

mentioning

confidence: 99%

Sand Transport and Deposition Behaviour in Subsea Pipelines for Flow Assurance

2019

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Sand transport through tubing and pipeline could cause a series of problems to flow assurance, if not properly managed or controlled. The most serious problem is the accumulation and erosion in multiphase flow pipelines and the surface equipment. Therefore, the importance of understanding the transport and deposition behaviour of sands through multiphase flow pipelines cannot be overemphasized. This study presents the sand transport and deposition characteristics in the complicated multiphase flow pipeline. The numerical result shows that the slurry velocity presents a uniform distribution in the multiphase flow pipeline at the sand concentration of 5% and the sand diameter of 50 µm. However, the slurry velocity at the bottom of the pipeline is significantly smaller than that at the top when the sand concentration and diameter reach 30% and 300 µm, respectively. It indicates that the sand deposition at the bottom of the pipe declines the slurry velocity and transport capacity. The deposition thickness is approximately 10% of the pipe diameter even at the low concentration of 5% sand with a small sand diameter of 50 µm and a high slurry velocity of 1.8 m/s. The sand deposition reaches about 30% of the pipe diameter at the same low concentration and high slurry velocity when the sand diameter increases to 300 μm.

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“…In their experiment, however, the effect of viscosity was not studied. (Najmi et al, 2016) conducted experiments by using two pipe diameters of 0.05m and 0.1m. The irregular and regular particles used in the investigation ranged from 20 to 350 with volume concentrations of 0.01% and 0.1%.…”

Section: Literature Reviewmentioning

confidence: 99%

Sand minimum transport conditions in gas–solid–liquid three-phase stratified flow in a horizontal pipe at low particle concentrations

Fajemidupe

Aliyu

Baba

et al. 2019

Chemical Engineering Research and Design

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Sand production in the life of oil and gas reservoirs is inevitable, as it is co-produced with oil and gas from the reservoirs. Its deposition in petroleum pipelines poses considerable risk to production and can lead to pipe corrosion and flow assurance challenges. Therefore, it is important that pipe flow conditions are maintained to ensure sand particles are not deposited but in continuous motion with the flow. The combination of minimum gas and liquid velocities that ensure continuous sand motion is known as the minimum transport condition (MTC). This study investigates the effect both of sand particle diameter and concentration on MTC in gas/liquid stratified flow in a horizontal pipeline. We used non-intrusive conductivity sensors for sand detection. These sensors, used for film thickness measurement in gas/liquid flows, was used here for sand detection. We found that MTC increases with increase in particle diameter for the same concentration and also increases as the concentration increases for the same particle diameter. A correlation is proposed for the prediction of sand transport at MTC in air-water flows in horizontal pipes, by including the effect of sand concentration in Thomas's lower model. The correlation accounts for low sand concentrations and gave excellent predictions when compared with the experimental results at MTC.

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Low concentration sand transport in multiphase viscous horizontal pipes: An experimental study and modeling guideline

Cited by 13 publications

References 25 publications

Experimental and Numerical analysis of Flow characteristics of sand water slurry in a horizontal pipe

Experimental and Numerical analysis of Flow characteristics of sand water slurry in a horizontal pipe

Sand Transport and Deposition Behaviour in Subsea Pipelines for Flow Assurance

Sand minimum transport conditions in gas–solid–liquid three-phase stratified flow in a horizontal pipe at low particle concentrations

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