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Estatística
Título: ESTIMATE OF THE INFLUENCE OF ROCK-DRILLING FLUID INTERACTION ON WELLBORE STABILITY
Autor: OLGA CECILIA CARVAJAL GARCIA
Colaborador(es): SERGIO AUGUSTO BARRETO DA FONTOURA - Orientador
Catalogação: 18/NOV/2003 Língua(s): PORTUGUESE - BRAZIL
Tipo: TEXT Subtipo: THESIS
Notas: [pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio.
[en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio.
Referência(s): [pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=4141&idi=1
[en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=4141&idi=2
DOI: https://doi.org/10.17771/PUCRio.acad.4141
Resumo:
Drilling problems associated with wellbore instability are aggravated when shale beddings are drilled, which constitute a high percentage of drilled rocks in the world. Shale in contact with water base mud (WBM), when submitted to the in situ stresses, could have a semipermeable membrane system behavior. This behavior and the osmotic pressure developed around the wellbore have a fundamental role in the force equilibrium that makes the formation unstable. On this document, a computer model based in the poroelastoplasticity with numerical formulation based on finite element code is applied to estimate the influence of rock-drilling fluid interaction on the stability of borehole drilled through shale. Modeling conditions explains how the model couples and deals with driving forces involved (hydraulic diffusion, chemical osmosis, chemical diffusion, advection). Unfavorable consequences about the pore-pressure and rock strength are showed with the time rock exposure. Wellbore instability is discussed according to pore-pressure, effective stress, plastic zone and radial displacement results obtained in this document.
Descrição: Arquivo:   
COVER, ACKNOWLEDGEMENTS, RESUMO, ABSTRACT, SUMMARY AND LISTS PDF    
CHAPTER 1 PDF    
CHAPTER 2 PDF    
CHAPTER 3 PDF    
CHAPTER 4 PDF    
CHAPTER 5 PDF    
CHAPTER 6 PDF    
CHAPTER 7 PDF    
REFERENCES PDF