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Previous issue date: 2010-09-18 / In Brazilian Northeast there are reservoirs with heavy oil, which use steam flooding as a
recovery method. This process allows to reduce oil viscosity, increasing its mobility and
consequently its oil recovery. Steam injection is a thermal method and can occurs in
continues or cyclic form. Cyclic steam stimulation (CSS) can be repeated several times.
Each cycle consisting of three stages: steam injection, soaking time and production
phase. CSS becomes less efficient with an increase of number of cycles. Thus, this work
aims to study the influence of compositional models in cyclic steam injection and the
effects of some parameters, such like: flow injection, steam quality and temperature of
steam injected, analyzing the influence of pseudocomponents numbers on oil rate,
cumulative oil, oil recovery and simulation time. In the situations analyzed was
compared the model of fluid of three phases and three components known as Blackoil .
Simulations were done using commercial software (CMG), it was analyzed a
homogeneous reservoir with characteristics similar to those found in Brazilian
Northeast. It was observed that an increase of components number, increase the time
spent in simulation. As for analyzed parameters, it appears that the steam rate, and
steam quality has influence on cumulative oil and oil recovery. The number of
components did not a lot influenced on oil recovery, however it has influenced on gas
production / No Nordeste brasileiro existem reservat?rios de ?leos pesados, nos quais se utiliza a inje??o
de vapor como m?todo de recupera??o. Este processo permite diminuir a viscosidade do ?leo,
aumentando a sua mobilidade e melhorando o volume de ?leo a ser recuperado. A inje??o de
vapor ? um m?todo t?rmico e ocorre na forma cont?nua ou c?clica. A inje??o c?clica de vapor
pode ser repetida diversas vezes. Cada ciclo consiste de tr?s etapas distintas: a fase de inje??o,
fase de fechamento (soaking) e fase de produ??o. A inje??o c?clica se torna menos eficiente ?
medida que o n?mero de ciclos aumenta. Neste sentido, este trabalho visa estudar a influ?ncia
de modelos composicionais na inje??o c?clica de vapor e os efeitos de alguns par?metros, tais
como: vaz?o de inje??o, qualidade do vapor e temperatura do vapor injetado; analisando a
influ?ncia do n?mero de pseudocomponentes, no que diz respeito ? vaz?o de ?leo, produ??o
acumulada de ?leo, fator de recupera??o e tempo de simula??o. Nas situa??es analisadas foi
comparado o modelo de fluido de tr?s fases e tr?s componentes conhecido como Black-oil .
Foram realizadas simula??es, utilizando um simulador comercial a partir de um modelo de
reservat?rio homog?neo com caracter?sticas similares ?s encontradas no Nordeste brasileiro.
Observou-se que quanto maior o n?mero de componentes, maior ? o tempo gasto na
simula??o. J? para os par?metros analisados, verifica-se que a vaz?o de inje??o de vapor e a
qualidade do vapor influenciam na produ??o acumulada de ?leo e no fator de recupera??o. O
n?mero de componentes n?o exerceu muita influ?ncia na produ??o acumulada, nem no fator
de recupera??o de ?leo, por?m foi significativa na produ??o de g?s do sistema
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/12936 |
| Date | 18 September 2010 |
| Creators | Carvalho, Tiago Pinheiro de |
| Contributors | CPF:09453210404, http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4781404Z6, Barillas, Jennys Lourdes Meneses, CPF:00946709947, http://lattes.cnpq.br/4637897380055777, Santanna, Vanessa Cristina, CPF:77938780430, http://lattes.cnpq.br/9445575768909084, Lima, Ant?nio Gilson Barbosa de, CPF:43667660430, http://lattes.cnpq.br/4527387699298544, Mata, Wilson da |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Ci?ncia e Engenharia do Petr?leo, UFRN, BR, Pesquisa e Desenvolvimento em Ci?ncia e Engenharia de Petr?leo |
| 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/openAccess |
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