VERIFYING THE INFLUENCE OF MODIFYING THE GEOMETRY PARAMETERS IN A TYPICAL PUMP S IMPELLER FROM AN ESP SYSTEM Authors: Ana Carla Costa Andrade André Laurindo Maitelli Carla Wilza Souza de Paula Maitelli
Summary Company Overview Problem Description Introduction Objectives Methodology Development Results and Discussion Conclusion and Next Steps References Thanks
Company Overview The Laboratory of Automation Applied in Petroleum - (LAUT) locating in the Universidade Federal do Rio Grande do Norte - UFRN, which has excellent infrastructure facilities and quality in research that resulted in national awards.
Company Overview LAUT has as main goal to develop researches with partner companies. The team is composed by professors, graduate and posgraduate (MS and Ph.D) students in Electrical, Computer and Petroleum Engineering areas.
Problem Description - Introduction Oil and Gas Lift Natural Lift; Artificial Lift Methods of Artificial Lift Electrical Submersible Pumping (ESP) Electrical Submersible Pumping (ESP) High flows High water content Low RGO High viscosity High temperatures (ESP)
Problem Description - Introduction Performance ESP Centrifugal Pump Impeller Supplying energy to the fluid to be transported to the surface; Centrifugal Pump Rotor or Impeller: drive fluid. Diffuser or stator: fixed part that guides the flow for discharge.. Diffuser Multiple Stages
Problem Description - Objective Investigate the influence of modifying the inlet and outlet angles within the impeller channels of a centrifugal pump stage in ESP systems, operating with a single-phase fluid. Simulations were performed using the ANSYS CFX 11.0, considering authentic dimensions of a 3D geometry.
Methodology - Development PUMP PROFILE - STATOR Screenshot of BladeGen, stator profile.
Methodology - Development PUMP PROFILE - IMPELLER Screenshot of BladeGen, impeller profile.
Results and Discussion Water Head for the manufacturer and for the simulator Nomenclature Volumetric Flow Calculation (m 3 /d) MassFlow Rate Calculation (Kg/s) Head Manufacturer (m) Simulation Head with Greater Angle (m) Simulation Head with Smaller Angle (m) q 0 200 2,31 14,9 9,08278 8,98345 q 1 900 10,41 11,3 6,26563 6,7126 q 2 1000 11,57 10,8 5,86401 6,2201 q 3 1112,91 12,88 10,3 5,41694 5,77402
Head (m) Representative curves of head versus flowrate 16 14 12 10 8 6 4 2 0 Simulation (Water) 200 900 1000 1112,91 Flowrate (m 3 /d) Head Manufacturer Head Without Modification Head With Greater Angle Head With Smaller Angle
Conclusion An important step in the development of the project was the creation of three-dimensional geometry of the pump resulting in computational meshes suitable for the development of the problem; Analyses were performed to obtain the characteristic Head curve of water and compare it with the manufacturer's data.
Next Step Exercise ANSYS CFX communication with another distinct software (MATLAB) in real time, aiming at the application of optimization technique, obtaining the maximum benefit from a preestablished performance criterion.
References AMARAL, G. D. L. do Modelagem do escoamento monofásico em bomba centrífuga submersa operando com fluidos viscosos. 2007, 260f. Dissertação (Mestrado), Faculdade de Engenharia Mecânica, Universidade Estadual de Campinas, Campinas, São Paulo. AMARAL, G.; ESTEVAM, V.; FRANÇA, F. A. On the influence of viscosity on ESP performance. SPE Production & Operations, SPE 110661, p.303-310, maio, 2009. ASUAJE, M.; BAKIR, F.; KOUIDRI, S.; KENYERY, F.; REY, R. Numerical modelization of the flow in centriugal pump: volute influence in velocity and pressure fields. International Jounal of Rotating Machinery, 2005:3, p.244-255, 2005. BIRD, R. B.; LIGHTFOOT, E. N.; STEWART, W. E. Fenômenos de transporte. Segunda edição. Rio de Janeiro: Livros Técnicos e Científicos - LTC, 2004. ESTEVAM V. Uma análise fenomenológica da operação de bomba centrífuga com escoamento bifásico. 2002, 297f. Tese (Doutorado), Faculdade de Engenharia Mecânica, Universidade Estadual de Campinas, Campinas, São Paulo. MAITELLI, A. L.; CARVALHO, F. C. A.. Programa computacional interativo para simulação e otimização de controladores PID. Artigo de Congresso. [s.d.], [s.l.]. MAITELLI, C. W. S. de P. Simulação do escoamento monofásico em um estágio de uma bomba centrífuga utilizando técnicas de fluidodinâmica computacional, 2010, 182 f. Tese (Doutorado), Programa de Pós-Graduação em Ciência e Engenharia de Petróleo, UFRN, Natal, RN. NASCIMENTO Jr, C. L.; YONEYAMA, T. Inteligência artificial em controle de automação. São Paulo: Blucher, 2000. KALID, R. Otimização de processos e sistemas. Programa de Pós-Graduação em Engenharia Industrial. Universidade Federal da Bahia, [s.d.]. 353: color. Disponível:<http://www.moodle.ufba.br/mod/resource/view.php?r=46285 >. Acesso em 09 set. 2013. TAKACS, G. Electrical submersible pumps manual: design, operations and maitenance. Gulf Professional Publishing, 2009. THOMAS, J. E.; TRIGGIA, A.; CORREIA, C. A.; FILHO, C. V.; XAVIER, J. A. D.; MACHADO, J. C. V.; FILHO, J. E. de S.; PAULA, J. L. de; ROSSI, N. C. M. de; PITOMBO, N. E. S.; GOUVEIA, P. C. V. de M.; CARVALHO, R. de S.; BARAGAN, R. V. Fundamentos da engenharia de petróleo. Segunda edição. Rio de Janeiro: Editora Interciência, 2001.
Thanks This work is being developed in the Laboratory of Automation in Oil (LAUT/UFRN), with the support of Petrobras Programme Human Resources Development (PRH-220 PB).