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Previous issue date: 2009-12-18 / Electrical resistive heating (ERH) is a thermal method used to improve oil recovery. It can increase oil rate and oil recovery due to temperature increase caused by electrical current
passage through oil zone. ERH has some advantage compared with well-known thermal methods such as continuous steam flood, presenting low-water production. This method can
be applied to reservoirs with different characteristics and initial reservoir conditions. Commercial software was used to test several cases using a semi-synthetic homogeneous reservoir with some characteristics as found in northeast Brazilian basins. It was realized a sensitivity analysis of some reservoir parameters, such as: oil zone, aquifer presence, gas cap
presence and oil saturation on oil recovery and energy consumption. Then it was tested several cases studying the electrical variables considered more important in the process, such as: voltage, electrical configurations and electrodes positions. Energy optimization by electrodes voltage levels changes and electrical settings modify the intensity and the electrical current distribution in oil zone and, consequently, their influences in reservoir temperature reached at some regions. Results show which reservoir parameters were significant in order to improve oil recovery and energy requirement in for each reservoir. Most significant parameters on oil recovery and electrical energy delivered were oil thickness, presence of aquifer, presence of gas cap, voltage, electrical configuration and electrodes positions. Factors such as: connate water, water salinity and relative permeability to water at irreducible oil saturation had low influence on oil recovery but had some influence in energy requirements. It was possible to optimize energy consumption and oil recovery by electrical variables. Energy requirements can decrease by changing electrodes voltages during the process. This application can be extended to heavy oil reservoirs of high depth, such as offshore fields, where nowadays it is not applicable any conventional thermal process such as steam flooding / O Aquecimento El?trico Resistivo (AER) ? um m?todo t?rmico usado para aumentar a recupera??o de petr?leo. Este aumenta a vaz?o de ?leo e conseq?entemente a recupera??o de
petr?leo devido ao aumento de temperatura promovida pela passagem de corrente el?trica na zona de interesse. O AER tem algumas vantagens sobre m?todos t?rmicos conhecidos, como
inje??o cont?nua de vapor, por apresentar baixa produ??o de ?gua, podendo ser aplicado a reservat?rios com diversas caracter?sticas e diversas condi??es iniciais. Um software
comercial foi usado para testar v?rios casos usando um reservat?rio homog?neo semi-sint?tico com algumas caracter?sticas encontradas em reservat?rio da bacia sedimentar do Nordeste Brasileiro. Foi realizada uma an?lise de sensibilidade dos par?metros de reservat?rio, tais como: espessura da zona de ?leo, presen?as de capa de g?s e de aq??fero e satura??o de ?leo, na recupera??o de ?leo e consumo de energia el?trica. V?rios casos foram testados usando vari?veis el?tricas consideradas mais importantes no processo, tais como: tens?o, configura??es el?tricas e posi??es dos eletrodos. Os resultados mostram que os par?metros de
reservat?rio foram significativos no sentido de aumentar a recupera??o de ?leo e a demanda de energia em cada reservat?rio. Os par?metros mais significativos na recupera??o de ?leo e no consumo de energia foram: a espessura da zona de ?leo, presen?as de capa de g?s e de aq??fero, as configura??es el?tricas e a posi??o dos eletrodos. Fatores como: satura??o irredut?vel de ?gua, salinidade da ?gua e a permeabilidade relativa da ?gua na satura??o residual de ?leo tiveram pouca influ?ncia na recupera??o de ?leo, mas tiveram uma influ?ncia maior na demanda de energia. Foi poss?vel otimizar o consumo de energia com a recupera??o de ?leo usando as vari?veis el?tricas. Estas aplica??es podem ser estendidas para reservat?rios de ?leo pesado e de grande profundidade, como em campos mar?timos (offshore), onde
atualmente n?o ? poss?vel o uso de m?todos t?rmicos convencionais de recupera??o, como a inje??o de vapor
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/12912 |
| Date | 18 December 2009 |
| Creators | Oliveira, Henrique Jos? Mendes de |
| Contributors | CPF:09453210404, http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4781404Z6, Barillas, Jennys Lourdes Meneses, CPF:00946709947, http://lattes.cnpq.br/4637897380055777, D?ria Neto, Adri?o Duarte, CPF:10749896434, http://lattes.cnpq.br/1987295209521433, Trevisan, Osvair Vidal, CPF:77824547868, http://lattes.cnpq.br/1114182866233774, 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 | Unknown |
| 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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