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Previous issue date: 2013-04-01 / The construction of wells is one of the most important activities of the oil industry.
The drilling process is the set of activities and operations to design, program and perform the
opening thereof. During this process, the cuttings are removed by the drilling fluid, or mud,
and carted to the surface. This fluid is injected into the drill string and returns to the surface
through the annular space between the well walls and the drill string. After the descent of the
column casing, the annular space between the casing string and the walls of the borehole is
filled with cement so as to secure the spine and prevent any migration of fluids between the
various permeable zones traversed by the well behind of the coating. To ensure the good
quality of the cementation scrubbers are used mattresses which are pumped ahead of the
cement slurry so as to avoid contamination of the drilling fluid paste, or vice versa, and assist
in the removal of plaster, formed by drilling fluid of the borehole walls, thus enabling a better
cement bond to the well. Within this context, this work aims to evaluate the efficiency of
mattresses scrubbers, the basis of ionic and nonionic surfactants, on the removal of nonaqueous
drilling fluid, based on n-paraffin in oil wells, and the compatibility between the
Mattress relations washer / drilling fluid bed scrubber / cement paste mattress washer / cement
slurry / drilling fluid and the drilling fluid / cement slurry using laboratory tests rheology,
thickening time and compressive strength. Also technique was performed X-ray diffraction
(XRD) for a more detailed analysis of these mixtures with hydrated cement paste. In
compatibility tests the conditions of temperature and pressure used in the same laboratory
procedure simulating the conditions of oil wells, the well is considered the depth of 800 m.
The results showed that the compositions of the mattress washer nonionic, KMS obtained a
100% efficient in removing the non-aqueous drilling fluid, and the best formulation showed
good results with respect to compliance testing / A constru??o de po?os ? uma das atividades mais importantes da ind?stria do petr?leo.
O processo de perfura??o de po?os ? o conjunto de atividades e opera??es destinadas a
projetar, programar e realizar a abertura dos mesmos. Durante este processo, os cascalhos s?o
removidos pelo fluido de perfura??o, ou lama, e carreados at? a superf?cie. Este fluido ?
injetado no interior da coluna de perfura??o e retorna ? superf?cie atrav?s do espa?o anular
entre as paredes do po?o e a coluna de perfura??o. Ap?s a descida da coluna de revestimento,
o espa?o anular entre a coluna de revestimento e as paredes do po?o ? preenchido com
cimento, de modo a fixar a coluna e evitar que haja migra??o de fluidos entre as diversas
zonas perme?veis atravessadas pelo po?o, por tr?s do revestimento. Para garantir a boa
qualidade da cimenta??o, s?o utilizados os colch?es lavadores, que s?o bombeados ? frente da
pasta de cimento, de modo a evitar a contamina??o da pasta pelo fluido de perfura??o, ou
vice-versa, al?m de auxiliar na remo??o do reboco, formado pelo fluido de perfura??o, das
paredes do po?o, possibilitando assim uma melhor ader?ncia do cimento ao po?o. Dentro
deste contexto, este trabalho tem como objetivo avaliar a efici?ncia de colch?es lavadores, a
base de tensoativos i?nico e n?o i?nico, na remo??o do fluido de perfura??o n?o aquoso, ?
base de n-parafina, em po?os de petr?leo, e a compatibilidade entre as rela??es colch?o
lavador/fluido de perfura??o, colch?o lavador /pasta de cimento, colch?o lavador /pasta de
cimento/fluido de perfura??o e fluido de perfura??o/pasta de cimento utilizando os ensaios
laboratoriais de reologia, tempo de espessamento e resist?ncia ? compress?o. Tamb?m foi
realizada a t?cnica difra??o de raios X (DRX) para uma an?lise mais detalhada dessas
misturas com a pasta hidratada de cimento. Nos ensaios de compatibilidade as condi??es de
temperatura e press?o utilizadas nos procedimentos laboratoriais simularam as mesmas
condi??es dos po?os de petr?leo, sendo a profundidade do po?o considerada de 800 m. Os
resultados mostraram que as composi??es do colch?o lavador n?o i?nico, o KMS, obtiveram
uma efici?ncia de 100% na remo??o do fluido de perfura??o n?o aquoso e a sua melhor
formula??o apresentou resultados satisfat?rios em rela??o aos testes de compatibilidade
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/17772 |
| Date | 01 April 2013 |
| Creators | Pinheiro, Francisca Sheldakelle Holanda Torres |
| Contributors | CPF:06117988320, http://lattes.cnpq.br/3318871716111536, Freitas, J?lio Cezar de Oliveira, CPF:00957245408, http://lattes.cnpq.br/2357217530716519, Garnica, Alfredo Ismael Curbelo, CPF:05227790779, http://lattes.cnpq.br/0257037690238235, Curbelo, Fab?ola Dias da Silva, CPF:87599651420, http://lattes.cnpq.br/6991333478380004, Braga, Renata Martins, CPF:05165674460, http://lattes.cnpq.br/4603529162393328, Melo, Dulce Maria de Ara?jo |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Qu?mica, UFRN, BR, F?sico-Qu?mica; Qu?mica |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Format | application/pdf |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/embargoedAccess |
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