Study of fluid flow in pre drilled liners in producing horizontal wells




Viscous fluids; Oil production; Radial inflow; Turbulent flow; Ansys Fluent.


Horizontal oil wells, when compared to vertical wells, have the main advantage of a larger area open to flow. The oil flowing from the porous medium enters the interior of the horizontal duct by means of several holes of small diameter, made in the metallic wall of the duct. The radial flow in the bore becomes axial along the duct, causing increased pressure drop. Therefore, this undesirable effect must be minimized, such that the flow is not impaired. That is the purpose of this work. The influence of the radial inflow on the pressure profile and axial flow velocity was investigated when the viscosity values of the fluid and the number of holes per plane were varied. The flow under analysis is characterized by a monophasic, incompressible, turbulent and permanent regime, occurring in a horizontal pipe 3 meters long and 10 cm in diameter. The 1 cm diameter holes in the tubing allow the ingress of fluid radially. Numerical modeling was performed using the ANSYS FLUENT 15.0 software, with post-processing and data collection through CFD-Post. Preliminary results show that the presence of radial fluid inlet generates an increase in pressure differential along the pipe due to the restriction to axial flow. Such a restriction is generated by the appearance of a hydrodynamic barrier from radial inflow. It has also been observed that more viscous fluids require higher pressure gradients to flow, however, they suffer smaller pressure drops when exposed to radial inflows. As for the velocity profiles, increasing the viscosity of the flowing fluid resulted in the intensification of the axial velocity after the radial inflow to a certain extent, so that for very viscous fluids this behavior is not conserved. Finally, the increase in axial flow velocity also occurs, the greater the number of holes per plane in the tube.


Ansys Fluent – Solver Theory Guide. (2013) Ansys FLUENT Release 15.0. [Software].

Dikken, B. J. (1990, Novembro). Pressure drop in horizontal wells and its effect on production performance 8. Journal of Petroleum Technology. 42(11) 1426-1433.

Fernandes, P. D., Silva, M. G. F., & Bedrikovetsky, P. A. (2006, abril). A new IOR technology to homogenized horizontal well injectivity/productivity profile. 8 SPE/DOE Symposium of Improved Oil Recovery, SPE 99343-SPE 99353. Tulsa, Oklahoma, USA. DOI:

Fox, R. W., Pritchard, P. J., & McDonald, A. T. (2011). Introdução à mecânica dos fluidos (7ª ed.) Rio de Janeiro: editora LTC.

Hansen, J. H., & Nederveen, N. (2002, outubro). Controlled acid jet (CAJ) technique for effective single operation simulation of 14000+ ft long reservoir section. 11 SPE European Petrleum Conference, Aberdeen, United Kingdon. DOI:

Joshi, S. D. (1991). Horizontal well technology. PennWell Books, Tulsa, Oklahoma, U.S.A., pp 535.

Junior, U. S. (2015). Simulação do escoamento em poços horizontais com completação não convencional (Tese doutorado). Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Mecânica, Florianópolis.

Landman, M. J., & Goldthorpe, W. H. (1991, novembro). Optimization of perforation distribution for horizontal wells. SPE Asia-Pacific Conference. SPE-23005-MS, 567 - 576. Perth. Australia. DOI: 10.2118/23005-MS.

Mantegazini, I. S., & Romero, O. J. (2019). Análise do escoamento em poços horizontais injetores completados com a técnica de furação diversiva. Research, Society and Development, v. 8. DOI: 10.33448/rsd-v8i9.1327.

Ouyang, L. B., Arbabi, S., & Aziz, K. (1998, junho) A single-phase wellbore-flow model for horizontal, vertical, and slanted wells. SPE Journal. 3 (2), 124-133.

Ozkan, E., Sarica, C., & Haci, M. (1999, setembro). Influence of pressure drop along the wellbore on horizontal-well productivity. SPE Journal. 4 (3) 288-301.

Penmatcha, V. R., Arbabi, S., & Aziz, K. (1999, setembro). Effects of pressure drop in horizontal weels and optimum well lenght. SPE Journal. 4 (3), 215-223

Resende, A. L. T. (2009). Análise numérica da bolha de separação do escoamento turbulento sobre placa plana fina inclinada. (Tese de doutorado). PUC – Rio. Rio de Janeiro, Brasil. DOI:

Rosa, A. J., Carvalho, R. S. & Xavier, A. J. D.(2006), Engenharia de reservatório de petróleo, Brasil: editora Interciência.

Santos, L. A. (2014). Investigação das perdas de carga na técnica de furação diversiva em poços. (Trabalho de conclusão de curso). Engenharia de Petróleo, Universidade Federal do Espírito Santo, São Mateus, Espírito Santo, Brasil.

Schulkes, M. S., & Utvik, O. H. (1997, dezembro). Pressure drop in a perforated pipe with radial inflow: single-phase flow. SPE Journal. 3 (1), 77-84. DOI:

Tecvix Planejamento e Serviços. Tecvix International, (2019). Produtos: filtros para controle de areia: tubos perfurado. Recuperado em 05 de jun. de 2019 de <>.



How to Cite

RIBEIRO, H. L. de S.; ROMERO, O. J. Study of fluid flow in pre drilled liners in producing horizontal wells. Research, Society and Development, [S. l.], v. 8, n. 10, p. e248101362, 2019. DOI: 10.33448/rsd-v8i10.1362. Disponível em: Acesso em: 27 sep. 2021.