Simulação computacional do escoamento em bombas de cavidades progressivas
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFRN |
Texto Completo: | https://repositorio.ufrn.br/jspui/handle/123456789/15602 |
Resumo: | The use of Progressing Cavity Pumps (PCPs) in artificial lift applications in low deep wells is becoming more common in the oil industry, mainly, due to its ability to pump heavy oils, produce oil with large concentrations of sand, besides present high efficiency when compared to other artificial lift methods. Although this system has been widely used as an oil lift method, few investigations about its hydrodynamic behavior are presented, either experimental or numeric. Therefore, in order to increase the knowledge about the BCP operational behavior, this work presents a novel computational model for the 3-D transient flow in progressing cavity pumps, which includes the relative motion between rotor and stator, using an element based finite volume method. The model developed is able to accurately predict the volumetric efficiency and viscous looses as well as to provide detailed information of pressure and velocity fields inside the pump. In order to predict PCP performance for low viscosity fluids, advanced turbulence models were used to treat, accurately, the turbulent effects on the flow, which allowed for obtaining results consistent with experimental values encountered in literature. In addition to the 3D computational model, a simplified model was developed, based on mass balance within cavities and on simplification on the momentum equations for fully developed flow along the seal region between cavities. This simplified model, based on previous approaches encountered in literature, has the ability to predict flow rate for a given differential pressure, presenting exactness and low CPU requirements, becoming an engineering tool for quick calculations and providing adequate results, almost real-time time. The results presented in this work consider a rigid stator PCP and the models developed were validated against experimental results from open literature. The results for the 3-D model showed to be sensitive to the mesh size, such that a numerical mesh refinement study is also presented. Regarding to the simplified model, some improvements were introduced in the calculation of the friction factor, allowing the application fo the model for low viscosity fluids, which was unsuccessful in models using similar approaches, presented in previous works |
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Pessoa, Paulo Alison Sousahttp://lattes.cnpq.br/3666134036419893http://lattes.cnpq.br/2699729486137957Paladino, Emílio Ernestohttp://lattes.cnpq.br/1379773445574323Assmann, Benno WaldemarMarcondes, Franciscohttp://lattes.cnpq.br/2663181961083657Lima, João Alves de2014-12-17T14:57:56Z2010-04-282014-12-17T14:57:56Z2009-12-15PESSOA, Paulo Alison Sousa. Simulação computacional do escoamento em bombas de cavidades progressivas. 2009. 105 f. Dissertação (Mestrado em Tecnologia de Materiais; Projetos Mecânicos; Termociências) - Universidade Federal do Rio Grande do Norte, Natal, 2009.https://repositorio.ufrn.br/jspui/handle/123456789/15602The use of Progressing Cavity Pumps (PCPs) in artificial lift applications in low deep wells is becoming more common in the oil industry, mainly, due to its ability to pump heavy oils, produce oil with large concentrations of sand, besides present high efficiency when compared to other artificial lift methods. Although this system has been widely used as an oil lift method, few investigations about its hydrodynamic behavior are presented, either experimental or numeric. Therefore, in order to increase the knowledge about the BCP operational behavior, this work presents a novel computational model for the 3-D transient flow in progressing cavity pumps, which includes the relative motion between rotor and stator, using an element based finite volume method. The model developed is able to accurately predict the volumetric efficiency and viscous looses as well as to provide detailed information of pressure and velocity fields inside the pump. In order to predict PCP performance for low viscosity fluids, advanced turbulence models were used to treat, accurately, the turbulent effects on the flow, which allowed for obtaining results consistent with experimental values encountered in literature. In addition to the 3D computational model, a simplified model was developed, based on mass balance within cavities and on simplification on the momentum equations for fully developed flow along the seal region between cavities. This simplified model, based on previous approaches encountered in literature, has the ability to predict flow rate for a given differential pressure, presenting exactness and low CPU requirements, becoming an engineering tool for quick calculations and providing adequate results, almost real-time time. The results presented in this work consider a rigid stator PCP and the models developed were validated against experimental results from open literature. The results for the 3-D model showed to be sensitive to the mesh size, such that a numerical mesh refinement study is also presented. Regarding to the simplified model, some improvements were introduced in the calculation of the friction factor, allowing the application fo the model for low viscosity fluids, which was unsuccessful in models using similar approaches, presented in previous worksO uso de bombas de cavidades progressivas (BCP) para elevação artificial de petróleo em poços de baixa a média profundidade está se tornando mais comum na indústria do petróleo devido, dentre outras características, à sua habilidade de bombear óleos pesados, produzir óleo com grandes concentrações de partículas sólidas, e tolerar grandes frações de gás livre. Além disso, apresenta alta eficiência, quando comparado a outros sistemas de elevação artificial. Apesar de este sistema ser bastante utilizado na elevação de óleo, poucas investigações acerca do seu comportamento hidrodinâmico podem ser encontradas na literatura. Desta forma, devido à necessidade de obter um maior domínio do comportamento operacional da BCP, este trabalho apresenta um novo modelo computacional para escoamento 3-D transiente em bombas de cavidades progressivas, utilizando o método dos volumes finitos baseado em elementos, no qual se inclui o movimento relativo entre o rotor e o estator. O modelo desenvolvido é capaz de predizer com exatidão parâmetros operacionais, como eficiência volumétrica e perdas viscosas, assim como fornecer informações detalhadas dos campos de pressão e velocidade no interior da bomba. Para tornar possível o estudo com BCP s bombeando fluidos de baixa viscosidade, foram utilizados modelos de turbulência avançados para tratar adequadamente os efeitos turbulentos no escoamento, os quais permitiram obter informações coerentes com a literatura do comportamento da BCP em resultados experimentais. Além do modelo tridimensional, este trabalho apresenta um modelo simplificado baseado em um balanço de massa entre as cavidades e na simplificação das equações do movimento para escoamento completamente desenvolvido ao longo das linhas de selo entre as cavidades. O modelo simplificado, baseado em abordagens já utilizadas para este tipo de bomba, tem capacidade de predizer valores de vazão para um dado diferencial de pressão, apresentando exatidão e requerendo pouco trabalho de CPU, tornando-se uma ferramenta de engenharia de uso fácil, permitindo respostas numéricas aproximadas em tempo-real. Os resultados apresentados neste trabalho consideraram uma BCP de estator rígido e os modelos apresentados foram validados com resultados experimentais da literatura. Os resultados para o modelo tridimensional mostraram-se sensíveis ao tamanho da malha, de maneira que um estudo de refinamento de malha é apresentado. Já no modelo simplificado foram introduzidos alguns melhoramentos no cálculo do fator de atrito permitindo a aplicação para fluidos de baixa viscosidade, o que não era possível em modelos similares apresentados em trabalhos anterioresCoordenação de Aperfeiçoamento de Pessoal de Nível Superiorapplication/pdfporUniversidade Federal do Rio Grande do NortePrograma de Pós-Graduação em Engenharia MecânicaUFRNBRTecnologia de Materiais; Projetos Mecânicos; TermociênciasEbfvmSimulação ComputacionalEscoamento 3D-tBCPEbfvmComputational simulation3D-t flowPCPCNPQ::ENGENHARIAS::ENGENHARIA MECANICASimulação computacional do escoamento em bombas de cavidades progressivasinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNORIGINALPauloASP.pdfapplication/pdf2445269https://repositorio.ufrn.br/bitstream/123456789/15602/1/PauloASP.pdf158c07b839a3cc9c6803734bb383eed0MD51TEXTPauloASP.pdf.txtPauloASP.pdf.txtExtracted texttext/plain148297https://repositorio.ufrn.br/bitstream/123456789/15602/6/PauloASP.pdf.txt39a850410e7cc9e4aefc2fc1b146e884MD56THUMBNAILPauloASP.pdf.jpgPauloASP.pdf.jpgIM Thumbnailimage/jpeg2997https://repositorio.ufrn.br/bitstream/123456789/15602/7/PauloASP.pdf.jpgb48ec27ee6f43ed3ac4c26169859952dMD57123456789/156022017-11-01 12:16:25.062oai:https://repositorio.ufrn.br:123456789/15602Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2017-11-01T15:16:25Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false |
dc.title.por.fl_str_mv |
Simulação computacional do escoamento em bombas de cavidades progressivas |
title |
Simulação computacional do escoamento em bombas de cavidades progressivas |
spellingShingle |
Simulação computacional do escoamento em bombas de cavidades progressivas Pessoa, Paulo Alison Sousa Ebfvm Simulação Computacional Escoamento 3D-t BCP Ebfvm Computational simulation 3D-t flow PCP CNPQ::ENGENHARIAS::ENGENHARIA MECANICA |
title_short |
Simulação computacional do escoamento em bombas de cavidades progressivas |
title_full |
Simulação computacional do escoamento em bombas de cavidades progressivas |
title_fullStr |
Simulação computacional do escoamento em bombas de cavidades progressivas |
title_full_unstemmed |
Simulação computacional do escoamento em bombas de cavidades progressivas |
title_sort |
Simulação computacional do escoamento em bombas de cavidades progressivas |
author |
Pessoa, Paulo Alison Sousa |
author_facet |
Pessoa, Paulo Alison Sousa |
author_role |
author |
dc.contributor.authorID.por.fl_str_mv |
|
dc.contributor.authorLattes.por.fl_str_mv |
http://lattes.cnpq.br/3666134036419893 |
dc.contributor.advisorID.por.fl_str_mv |
|
dc.contributor.advisorLattes.por.fl_str_mv |
http://lattes.cnpq.br/2699729486137957 |
dc.contributor.advisor-co1ID.por.fl_str_mv |
|
dc.contributor.referees1.pt_BR.fl_str_mv |
Assmann, Benno Waldemar |
dc.contributor.referees1ID.por.fl_str_mv |
|
dc.contributor.referees2.pt_BR.fl_str_mv |
Marcondes, Francisco |
dc.contributor.referees2ID.por.fl_str_mv |
|
dc.contributor.referees2Lattes.por.fl_str_mv |
http://lattes.cnpq.br/2663181961083657 |
dc.contributor.author.fl_str_mv |
Pessoa, Paulo Alison Sousa |
dc.contributor.advisor-co1.fl_str_mv |
Paladino, Emílio Ernesto |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://lattes.cnpq.br/1379773445574323 |
dc.contributor.advisor1.fl_str_mv |
Lima, João Alves de |
contributor_str_mv |
Paladino, Emílio Ernesto Lima, João Alves de |
dc.subject.por.fl_str_mv |
Ebfvm Simulação Computacional Escoamento 3D-t BCP |
topic |
Ebfvm Simulação Computacional Escoamento 3D-t BCP Ebfvm Computational simulation 3D-t flow PCP CNPQ::ENGENHARIAS::ENGENHARIA MECANICA |
dc.subject.eng.fl_str_mv |
Ebfvm Computational simulation 3D-t flow PCP |
dc.subject.cnpq.fl_str_mv |
CNPQ::ENGENHARIAS::ENGENHARIA MECANICA |
description |
The use of Progressing Cavity Pumps (PCPs) in artificial lift applications in low deep wells is becoming more common in the oil industry, mainly, due to its ability to pump heavy oils, produce oil with large concentrations of sand, besides present high efficiency when compared to other artificial lift methods. Although this system has been widely used as an oil lift method, few investigations about its hydrodynamic behavior are presented, either experimental or numeric. Therefore, in order to increase the knowledge about the BCP operational behavior, this work presents a novel computational model for the 3-D transient flow in progressing cavity pumps, which includes the relative motion between rotor and stator, using an element based finite volume method. The model developed is able to accurately predict the volumetric efficiency and viscous looses as well as to provide detailed information of pressure and velocity fields inside the pump. In order to predict PCP performance for low viscosity fluids, advanced turbulence models were used to treat, accurately, the turbulent effects on the flow, which allowed for obtaining results consistent with experimental values encountered in literature. In addition to the 3D computational model, a simplified model was developed, based on mass balance within cavities and on simplification on the momentum equations for fully developed flow along the seal region between cavities. This simplified model, based on previous approaches encountered in literature, has the ability to predict flow rate for a given differential pressure, presenting exactness and low CPU requirements, becoming an engineering tool for quick calculations and providing adequate results, almost real-time time. The results presented in this work consider a rigid stator PCP and the models developed were validated against experimental results from open literature. The results for the 3-D model showed to be sensitive to the mesh size, such that a numerical mesh refinement study is also presented. Regarding to the simplified model, some improvements were introduced in the calculation of the friction factor, allowing the application fo the model for low viscosity fluids, which was unsuccessful in models using similar approaches, presented in previous works |
publishDate |
2009 |
dc.date.issued.fl_str_mv |
2009-12-15 |
dc.date.available.fl_str_mv |
2010-04-28 2014-12-17T14:57:56Z |
dc.date.accessioned.fl_str_mv |
2014-12-17T14:57:56Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
PESSOA, Paulo Alison Sousa. Simulação computacional do escoamento em bombas de cavidades progressivas. 2009. 105 f. Dissertação (Mestrado em Tecnologia de Materiais; Projetos Mecânicos; Termociências) - Universidade Federal do Rio Grande do Norte, Natal, 2009. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufrn.br/jspui/handle/123456789/15602 |
identifier_str_mv |
PESSOA, Paulo Alison Sousa. Simulação computacional do escoamento em bombas de cavidades progressivas. 2009. 105 f. Dissertação (Mestrado em Tecnologia de Materiais; Projetos Mecânicos; Termociências) - Universidade Federal do Rio Grande do Norte, Natal, 2009. |
url |
https://repositorio.ufrn.br/jspui/handle/123456789/15602 |
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por |
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por |
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openAccess |
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Universidade Federal do Rio Grande do Norte |
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UFRN |
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BR |
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Tecnologia de Materiais; Projetos Mecânicos; Termociências |
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Universidade Federal do Rio Grande do Norte |
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