Numerical Study of Heavy Oil Flow on Horizontal Pipe Lubricated by Water

Andrade, Tony Herbert Freire de; Crivelaro, Kelen Cristina Oliveira; Neto, Severino Rodrigues de Farias; Lima, Antônio Gilson Barbosa de

doi:10.1007/978-3-642-22700-4_6

Cited by 11 publications

(14 citation statements)

References 23 publications

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“…It is more economical when compared with other technologies, such as heating, solvent dilution, emulsification, and partial upgrading (Nunez et al 1998;Saniere et al 2004). In LPF, a thin water annulus prevents continuous contact between the pipe wall and the viscous oil core, resulting in much lower energy requirements than would be needed to transport the viscous oil alone in the pipeline (Arney et al 1993;Joseph et al 1999;McKibben et al 2000;Rodriguez et al 2009;de Andrade et al 2012). The water could be naturally present in the oil or could be injected for the purpose of producing LPF.…”

Section: Introductionmentioning

confidence: 99%

A parametric study of the hydrodynamic roughness produced by a wall coating layer of heavy oil

Rushd

Sanders

2017

Pet. Sci.

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In water-lubricated pipeline transportation of heavy oil and bitumen, a thin oil film typically coats the pipe wall. A detailed study of the hydrodynamic effects of this fouling layer is critical to the design and operation of oil-water pipelines, as it can increase the pipeline pressure loss (and pumping power requirements) by 15 times or more. In this study, a parametric investigation of the hydrodynamic effects caused by the wall coating of viscous oil was conducted. A custom-built rectangular flow cell was used. A validated CFD-based procedure was used to determine the hydrodynamic roughness from the measured pressure losses. A similar procedure was followed for a set of pipe loop tests. The effects of the thickness of the oil coating layer, the oil viscosity, and water flow rate on the hydrodynamic roughness were evaluated. Oil viscosities from 3 to 21300 Pa s were tested. The results show that the equivalent hydrodynamic roughness produced by a wall coating layer of viscous oil is dependent on the coating thickness but essentially independent of oil viscosity. A new correlation was developed using these data to predict the hydrodynamic roughness for flow conditions in which a viscous oil coating is produced on the pipe wall.Keywords Pipeline transportation Á Heavy oil Á Wall fouling Á Lubricated pipe flow Á CFD simulation List of symbols

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Section: Introductionmentioning

confidence: 99%

A parametric study of the hydrodynamic roughness produced by a wall coating layer of heavy oil

Rushd

Sanders

2017

Pet. Sci.

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“…However, the influence of the gas phase in the core-flow on pipelines and connections is still not well defined, and further studies are needed to ensure the efficiency of the technique in this physical situation. The tests of the related phenomena that emerged in connections were evaluated by Wang et al [9], Andrade et al [10], Andrade et al [11], Andrade et al [12], Andrade et al [13] and Crivelaro et al [14]. Particularly with reference to reduction of pressure drop in flow, Brauner et al [15] has reported a correlation applied to heavy-oil/water two-phase flow in an annular flow pattern.…”

Section: Heavy-oil Transport Techniquesmentioning

confidence: 99%

Applying CFD in the Analysis of Heavy-Oil Transportation in Curved Pipes Using Core-Flow Technique

Conceição¹,

Lima

Andrade³

et al. 2017

IJM

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“…There are three numerical models which are used to solve two‐phase flow problems: the volume of fluid model (VOF), the Mixture model, and the Eulerian model. The VOF model is selected for this case of the hydrodynamics of core annular flow and it has been widely used for two‐phase modelling . The following governing transport equations including VOF and turbulence model equations need to be solved.…”

Section: Model Developmentmentioning

confidence: 99%

“…An extensive study of mathematical modelling has been used with an empirical input interface structure assuming a shape of the wave such as: sawtooth wave, snake waves, and smooth interface with a concentric solid core. Computational fluid dynamics have been applied to calculate the turbulent annular flow using the k‐ϵ model with laminar viscous oil, and for two‐phase modelling . In all the studies, the effects of inlet disturbance and interfacial deformation from the nozzle have not been considered.…”

Section: Introductionmentioning

confidence: 99%

CFD simulation of interfacial instability from the nozzle in the formation of viscous core‐annular flow

et al. 2016

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The interfacial instability in the development of core‐annular flow by the influence of the inlet nozzle in a horizontal pipe was investigated by computational fluid dynamics (CFD). The two‐phase flow has been simulated using Volume‐Of‐Fluid model (VOF) and k‐ϵ turbulence model for the core (viscous oil) and the annular phase (water). The simulation results showed that by increasing the water input fraction, the interfacial instability appeared when the eccentricity of the core with an upward position and an oscillating position were generated by the input pressure, turbulent kinetic, and buoyancy force. In the development of the perfect core‐annular flow an input concentric core changes to eccentric position with negligible turbulence. The onset of entrainment is formed by a reverse flow at the junction of the two‐phase at the nozzle exit. The interfacial formation was analyzed using a proposed two‐phase Froude number and modified Eötvos number involving the water input fraction.

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Numerical Study of Heavy Oil Flow on Horizontal Pipe Lubricated by Water

Cited by 11 publications

References 23 publications

A parametric study of the hydrodynamic roughness produced by a wall coating layer of heavy oil

A parametric study of the hydrodynamic roughness produced by a wall coating layer of heavy oil

Applying CFD in the Analysis of Heavy-Oil Transportation in Curved Pipes Using Core-Flow Technique

CFD simulation of interfacial instability from the nozzle in the formation of viscous core‐annular flow

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