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Previous issue date: 2014-03-06 / The occurrence of heavy oil reservoirs have increased substantially and, due to the high viscosity characteristic of this type of oil, conventional recovery methods can not be applied. Thermal methods have been studied for the recovery of this type of oil, with a main objective to reduce its viscosity, by increasing the reservoir temperature, favoring the mobility of the oil and allowing an increasing in the productivity rate of the fields. In situ combustion (ISC) is a thermal recovery method in which heat is produced inside the reservoir by the combustion of part of the oil with injected oxygen, contrasting with the injection of fluid that is heated in the surface for subsequent injection, which leads to loss heat during the trajectory to the reservoir. The ISC is a favorable method for recovery of heavy oil, but it is still difficult to be field implemented. This work had as an objective the parametric analysis of ISC process applied to a semi-synthetic reservoir with characteristics of the Brazilian Northeast reservoirs using vertical production and vertical injection wells, as the air flow injection and the wells completions. For the analysis, was used a commercial program for simulation of oil reservoirs using thermal processes, called Steam, Thermal and Advanced Processes Reservoir Simulator (STARS) from Computer Modelling Group (CMG). From the results it was possible to analyze the efficiency of the ISC process in heavy oil reservoirs by increasing the reservoir temperature, providing a large decrease in oil viscosity, increasing its mobility inside the reservoir, as well as the improvement in the quality of this oil and therefore increasing significantly its recovered fraction. Among the analyzed parameters, the flow rate of air injection was the one which had greater influence in ISC, obtaining higher recovery factor the higher is the flow rate of injection, due to the greater amount of oxygen while ensuring the maintenance of the combustion front / A ocorr?ncia de ?leos pesados e ultrapesados v?m aumentando sensivelmente e, devido ? alta viscosidade caracter?stica deste tipo de ?leo, n?o podem ser aplicados os m?todos convencionais de recupera??o. M?todos t?rmicos v?m sendo estudados para recupera??o deste tipo de ?leo, tendo como principal objetivo reduzir a sua viscosidade atrav?s do aumento da temperatura do reservat?rio, favorecendo a mobilidade do ?leo e permitindo um aumento no ?ndice de produtividade dos campos. A Combust?o in situ (CIS) ? um m?todo t?rmico de recupera??o em que o calor ? produzido dentro do reservat?rio pela combust?o de parte do ?leo com oxig?nio injetado, contrastando com a inje??o de fluido aquecido ainda na superf?cie para posterior inje??o, o que acarreta perda de calor durante o trajeto ao reservat?rio. A CIS ? um m?todo prop?cio para recupera??o de ?leo pesado, por?m ainda ? complexo de ser implementado. Este trabalho teve como objetivo a an?lise param?trica do processo CIS aplicado a um reservat?rio semissint?tico com caracter?sticas do Nordeste Brasileiro utilizando po?os verticais de produ??o e inje??o, assim como a vaz?o de inje??o de ar e as completa??es dos po?os. Para an?lise do m?todo foi utilizado um programa comercial de simula??o de reservat?rios de petr?leo usando processos t?rmicos, denominado Steam, Thermal and Advanced Processes Reservoir Simulator (STARS) do Computer Modelling Group (CMG). A partir dos resultados obtidos foi poss?vel comprovar a efici?ncia do processo CIS em reservat?rios de ?leo pesado atrav?s do aumento da temperatura do reservat?rio, promovendo uma grande diminui??o na viscosidade do ?leo, aumentando sua mobilidade no interior do reservat?rio, assim como a melhora na qualidade desse ?leo e aumentando assim, significativamente a sua fra??o recuperada. Dentre os par?metros analisados, a vaz?o de inje??o de ar foi a que apresentou maior influ?ncia no processo CIS, obtendo maior fator de recupera??o quanto maior a vaz?o de inje??o, sendo devido a maior quantidade de oxig?nio garantindo a manuten??o da frente de combust?o
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/12997 |
| Date | 06 March 2014 |
| Creators | Pereira, Heloize dos Santos |
| Contributors | CPF:09453210404, http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4781404Z6, Barillas, Jennys Lourdes Meneses, CPF:00946709947, http://lattes.cnpq.br/4637897380055777, Medeiros, Ana Catarina Rocha, CPF:67215793400, http://lattes.cnpq.br/8013591667991638, 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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