Operation control of fluids pumping in curved pipes during annular flow: a numerical evaluation


  • T Andrade
  • S Neto
  • A Lima
  • C Silva
  • W Lima




To generate projects which provide significant volume recovery from heavy oils reservoirs and improve existing projects, is important to develop new production and transport technologies, especially in the scenario of offshore fields. The core-flow technique is one of new technologies used in heavy oil transportation. This core-flow pattern is characterized by a water pellicle that is formed close or adjacent to the inner wall of the pipe, functioning as a lubricant. The oil flows in the center of the pipe causing a reduction in longitudinal pressure drop. In this sense, this work presents a numerical study of heavy oil annular flow (core-flow) assisted by computational tool ANSYS CFX® Release 12.0. It was used a three-dimensional, transient and isothermal mathematical model considered by the mixture and turbulence - models to address the water-heavy oil two-phase flow, assuming laminar flow for oil phase and turbulent flow for water phase. Results of the pressure, velocity and volume fraction distributions of the phases and the pressure drop for different operation conditions are presented and evaluated. It was observed that the oil core flowing eccentrically in the pipe and stops of the water flux considerably increases the pressure drop in the pipe after the restart of the pump.


Andrade, T. H. F., Crivelaro, K. C. O., Farias Neto, Severino R., Lima, A. G. B. Numerical study of heavy oil flow on horizontal pipe lubricated by water, In: Andreas Ochsner; Lucas F. M. da Silva; Holm Altenbach. (Org.). Materials with Complex Behaviour II: Properties, Non-Classical Materials and New Technologies. Series: Advanced Structured Materials. Heidelberg (Germany): Springer-Verlag, v. 16, p. 99-118, 2012. https://doi.org/10.1007/978-3-642-22700-4_6

ANSYS, CFX-Theory Manual, 2009.

Bai, R., Traveling waves in a high viscosity ratio and axisymmetric core annular flow. These (Doctorate), Faculty of Graduate School of the University of Minnesota, Minnesota-USA, 1995.

Bannwart, A. C., Modeling Aspects of oil-water core-annular flows, Journal of Petroleum Science and Engineering, 2001, vol. 32, (2-4), p. 127-143. https://doi.org/10.1016/s0920-4105(01)00155-3

Bensakhria, A., Peysson, Y., Antonini, G., Experimental study of the pipeline lubrication for heavy oil transport, Oil & Gas Science and Technology, 2004-Rev. IFP, vol. 59, (5), p. 523-533. https://doi.org/10.2516/ogst:2004037

Bordalo, S. N. and Oliveira, R. C., Two-Phase Flow Oil-Water With Precipitation Paraffins Submarine Pipelines In Oil Production, 4 PDPETRO Campinas, SP 21-24 October 2007 N° 2.3.0477, p. 1-11.

Brauner, N., Two-phase liquid-liquid annular flow, International Journal of Multiphase Flow, 1991, vol. 17, 59-76. https://doi.org/10.1016/0301-9322(91)90070-j

Joseph, D. D. and Renardy, Y. Y., Fundamentals of Two-Fluids Dynamics. Part II: Lubricated transport, drops and miscible liquids, 1993, Ed. New York Springer-Verlag.

Ko, T., Choi, H. G., Bai, R., Joseph, D. D., Finite element method simulation of turbulent wavy core-annular flows Using a k-ω Turbulence Model Method. International Journal of Multiphase Flow, 2002, vol. 28, (7), p. 1205-1222. https://doi.org/10.1016/s0301-9322(02)00024-1

Muniz, A. R.; Argimiro, R. S; Nilo, S. M. C., A New Method for the simulation of viscoelastic fluid flows, 2005. Technical Report, Department of Chemical Engineering, Federal University of Rio Grande do Sul. (in Portuguese).

Oliemans, R. V. A., Ooms, G., Wu, H. L., Duijvestijn. A., The core-annular oil/water flow turbulent-lubricating-film model and measurements in a 5 cm Pipe Loop. International Jounal Multiphase Flow, 1987, vol. 13, (1), p. 23-31. https://doi.org/10.1016/0301-9322(87)90004-8

Ooms, G., Poesio, P., Stationary core-annular flow through a horizontal pipe. Physical Review, 2003, vol. 68. https://doi.org/10.1103/physreve.68.066301

Prada, J., W., V.; Bannwart, A., C., Modeling of vertical core annular flows and application to heavy oil production. Energy for the New Millenium, p. 14-17, New Orleans, 2000, LA. Proceedings of ETCE/OMAE.

Rodriguez, O. M. H. and Bannwart, A. C., Analytical Model for Interfacial Waves in Vertical Core-flow. Journal of Petroleum Science and Engineering, 2006a, vol. 54, (3-4), p. 173-182. https://doi.org/10.1016/j.petrol.2006.07.004

Andrade, T. H. F.; Silva, F. N.; Neto, S. R. F. and Lima, A. G. B. Applying CFD in the analysis of heavy oil - water two-phase flow in joints by using core annular flow technique. International Journal of Multiphysics, 2013, vol. 7, (2), p. 137-151. https://doi.org/10.1260/1750-9548.7.2.137



How to Cite

Andrade, T., Neto, S., Lima, A., Silva, C. and Lima, W. (2014) “Operation control of fluids pumping in curved pipes during annular flow: a numerical evaluation”, The International Journal of Multiphysics, 8(3), pp. 271-284. doi: 10.1260/1750-9548.8.3.271.




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