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Previous issue date: 2016-05-24 / Ag?ncia Nacional do Petr?leo - ANP / Buscando otimizar as t?cnicas de produ??o de petr?leo, tanto em efici?ncia,
quanto em custo operacional, a molhabilidade do reservat?rio, propriedade que afeta
diretamente a produ??o de ?leo, desempenha um papel importante nos v?rios processos
de recupera??o de petr?leo utilizados. Baseado neste contexto, este trabalho estudou a
influ?ncia da invers?o na molhabilidade da rocha na produ??o e recupera??o de petr?leo
de reservat?rios carbon?ticos, utilizando solu??o de tensoativo, sistemas
microemulsionados e sistemas microemulsionados com adi??o de pol?mero. Foram
utilizados diferentes sistemas rocha-fluidos, escolhidos de forma a permitir diferenciar
entre os efeitos relativos ? redu??o na tens?o interfacial e altera??o na molhabilidade
?leo-?gua. Foi escolhido um tensoativo cati?nico, o brometo de cetiltrimetilam?nio
(C16TAB) e avaliadas duas das principais propriedades do tensoativo, concentra??o
micelar cr?tica e ponto de Krafft, e todos os sistemas obtidos foram caracterizados
atrav?s de medidas de tamanho de got?cula, tens?o superficial e interfacial e
viscosidade. A modifica??o da molhabilidade da rocha foi avaliada principalmente por
medidas de ?ngulo de contato, por?m para alguns sistemas foram realizados tamb?m os
testes de embebi??o espont?nea. Os sistemas com o maior potencial, de acordo com os
resultados das caracteriza??es e mudan?a na molhabilidade da rocha de molh?vel ao
?leo para molh?vel a ?gua, foram aplicados no simulador de reservat?rios para que
fosse poss?vel quantificar os efeitos da utiliza??o desses sistemas nas propriedades da
rocha e dos fluidos nela contidos. Os melhores resultados de recupera??o foram
alcan?ados quando se utilizou a microemuls?o polim?rica, conseguindo recuperar at?
95% do petr?leo. / In order to optimize the oil production techniques, both in efficiency and in operating
costs, the wettability of the reservoir, a property that directly affects the oil production,
plays an important role in various advanced oil recovery processes. In this context, this
thesis studied the influence of the inversion of the wettability of the rock in the
production and recovery of carbonate reservoirs using surfactant solution,
microemulsion systems and microemulsion systems with added polymers. Different
systems were used (rock-fluid), which were chosen to elucidate the relative effects of
the reduction in interfacial tension and changes in oil-water wettability. A cationic
surfactant has been chosen, cetyltrimethylammonium bromide (C16TAB), and two
important surfactant properties were evaluated, critical micelle concentration and the
Krafft point, and all systems were characterized by droplet size measurements, surface
and interfacial tension, and viscosity. The modification of rock wettability was
primarily evaluated by contact angle measurements, however for some systems tests of
spontaneous imbibition were also carried out. Systems with the highest potential, in
accordance with the results of the characterizations and change in wettability of wet-oil
to wet-water, were applied to the reservoir simulator to make it possible to quantify the
effects of the use of such systems in the rock properties and the fluid contained therein.
The best recovery results were achieved when using the polymeric microemulsion,
obtaining recovery up to 95% of the oil.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/21609 |
| Date | 24 May 2016 |
| Creators | Soares, Ana Paula Justino |
| Contributors | 05641284491, http://lattes.cnpq.br/2174051551046465, Wanderley Neto, Alcides de Oliveira, 00738841463, http://lattes.cnpq.br/4789528535524269, Gurgel, Alexandre, 59721421472, http://lattes.cnpq.br/5266735277153768, Leite, Ricardo Henrique de Lima, 52264343400, http://lattes.cnpq.br/3801476460958779, Santanna, Vanessa Cristina, 77938780430, http://lattes.cnpq.br/9445575768909084, Dantas, Tereza Neuma de Castro, Dantas Neto, Afonso Avelino |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM ENGENHARIA QU?MICA, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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