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Previous issue date: 2010-11-10 / The objective of this study was to evaluate the displacement of
petroleum/diesel solutions, at different concentrations, observing the effect of
ultrasonic vibrations in fluids present in porous media to obtain an increase in oil
production. The bubbles produced by ultrasound implode asymmetrically in the rock,
generating liquid jets with high speed, displacing the oil present in porous media. The
oil/diesel solutions were prepared with concentrations ranging from 20 g/L to 720 g/L
in oil in relation to diesel and its viscosities were obtained in a Brookfield Rheometer
RS2000, with temperature ranging from 25 to 55 ?C. After, calculations were
performed to obtain the activation energy data for oil/diesel solutions. For oil recovery
experiments, cylindrical samples of porous rock (core samples), with resin around the
perimeter and its two circular bases free to allow the passage of fluids, were first
saturated with 2% KCl solution and after with oil solutions. The results of oil
extraction were satisfactory for all studied solutions, being obtained up to 68% partial
displacement with saline solution injection. The ultrasound system was used after
saline injection, increasing oil displacement, with oil extractions ranging from 63% to
79%. During the experiments, it was observed the warming of core samples, helping to
reduce the viscosity of more concentrated systems, and consequently enhancing the
percentage of advanced recovery for all studied solutions / O objetivo desse trabalho foi avaliar o deslocamento de solu??es de
petr?leo/diesel, em diferentes concentra??es, observando o efeito das vibra??es
ultrass?nicas no deslocamento dos fluidos presentes em meio poroso para obter um
aumento na produ??o de petr?leo. As bolhas formadas pelo ultrassom implodem na
rocha de forma assim?trica, gerando jatos de l?quido em alta velocidade, deslocando o
?leo do meio poroso. As solu??es foram preparadas em concentra??es variadas de 20
g/L a 720 g/L em ?leo com rela??o ao solvente diesel e suas viscosidades analisadas
em um Re?metro Brookfield RS2000, com intervalos de temperaturas de 25 a 55 ?C.
Em seguida, foram realizados c?lculos para obten??o dos dados de energia de ativa??o
das solu??es ?leo/diesel. Para a realiza??o dos experimentos de recupera??o de
petr?leo foram utilizadas amostras de rochas porosas cil?ndricas (plugs) resinadas na
lateral deixando as extremidades livres para a transposi??o dos fluidos at? a satura??o,
inicialmente com solu??o de KCl (2%) e posteriormente com as solu??es de petr?leo.
Foram obtidos resultados satisfat?rios da extra??o para todas as solu??es estudadas,
obtendo-se um deslocamento parcial por meio de inje??o salina de at? 68%. Ap?s este
estudo foi utilizado o sistema de ultrassom, que ajudou ainda mais no deslocamento
final, obtendo-se extra??es que variaram entre 63% e 79% de petr?leo. Durante os
experimentos ocorreu um aquecimento nos plugs, que auxiliou na diminui??o da
viscosidade dos sistemas mais concentrados, e consequentemente aumentou os
percentuais de recupera??o avan?ada para todas as solu??es estudadas
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/15805 |
| Date | 10 November 2010 |
| Creators | Santos, Joselisse Soares de Carvalho |
| Contributors | CPF:05641284491, http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783215D9, Barros Neto, Eduardo Lins de, CPF:59545844434, http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4798645D3, Gomes, Erika Adriana de Santana, CPF:02995464466, http://lattes.cnpq.br/2762469805823547, Santos, Francisco Klebson Gomes dos, CPF:00779263405, http://lattes.cnpq.br/0273000754120553, Leite, Ricardo Henrique de Lima, Dantas Neto, Afonso Avelino |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Engenharia Qu?mica, UFRN, BR, Pesquisa e Desenvolvimento de Tecnologias Regionais |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| 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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