Título: | NUMERICAL ANALYSIS OF THE MECHANICAL BEHAVIOR OF CEMENT SHEATHS IN WELLS THROUGH SALT FORMATIONS | |||||||
Autor: |
PHILLIP AFONSO DE MELO GRAINGER |
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Colaborador(es): |
EURIPEDES DO AMARAL VARGAS JUNIOR - Orientador RAQUEL QUADROS VELLOSO - Coorientador |
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Catalogação: | 31/OUT/2024 | Língua(s): | ENGLISH - UNITED STATES |
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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. |
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Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=68514&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=68514&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.68514 | |||||||
Resumo: | ||||||||
There exist several salt rock formations in the world today which store a
substantial amount of oil, being a great asset to the petroleum industry. The pre-salt basins off the coast of Brazil have been a primary focus due to the challenges
they provide in oil drilling. Unlike most formations, salt rock exhibits creep behavior where, once the drilling has been performed, the rock begins to relieve
itself from the applied stress by closing gradually with time. This may lead to
cases of well collapse and well abandonment, creating an economical issue to oil
drillers. Well cementing is always seeked to be performed with excellence, caution and thoroughness. Nevertheless, an unevenly distributed cement job complicates the analysis for engineers to model and predict its behavior. A well-cemented casing is not always achieved in deepwater wells. Geometry and size
greatly influence the stresses on the defected area. Hence, it is important that the
cement and salt formation be fully understood in order to make rational engineering decisions. The focus of this research study is to attain a deeper understanding
of poorly-cemented offshore wells subjected to non-uniform salt loading. A finite
element model was generated by the commercial software program Abaqus to
implement simulations and analyses of various failure scenarios.
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