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Previous issue date: 2016-04-19 / A descoberta do pr?-sal em 2006 trouxe novas expectativas para o futuro do setor petrol?fero no Brasil. Por?m, muitos desafios est?o relacionados ? atividade de explora??o e produ??o daquela regi?o, como por exemplo a perfura??o de uma extensa camada de sal, quest?es de log?stica e a alta concentra??o de CO2 (entre 8% e 12%). Esse g?s associado ao g?s natural n?o pode apenas ser lan?ado para atmosfera por quest?es ambientais e, portanto, a reinje??o desse g?s pode ser uma alternativa vi?vel. O CO2 causa inchamento do ?leo, reduzindo sua viscosidade e, portanto, facilita o fluxo de ?leo para o po?o produtor. Foi modelado um reservat?rio com caracter?sticas do pr?-sal no simulador comercial da CMG (Computer Modelling Group). Foram analisados par?metros como vaz?o de inje??o, dist?ncia vertical entre os po?os produtor e injetor, comprimento dos po?os e dist?ncia do po?o produtor ? base do reservat?rio e como esses par?metros influenciam no processo. O tempo total de projeto foi de 35 anos e as an?lise ocorreram para o primeiro ano de projeto, 2 anos 5, 15. 20 e 35 anos. O melhor caso conferiu um fator de recupera??o de 60% e em todos os anos, a vaz?o de inje??o foi o par?metro que mais influenciou no projeto. Em seguida procedeu-se uma an?lise econ?mica para dois cen?rios: comprando CO2 e transportando atrav?s de um carboduto e reinjetando o mesmo no po?o a partir da separa??o do g?s da corrente de g?s natural. A partir da viabilidade econ?mica dos dois projetos, foi analisado os impactos no VPL de oscicla??es dos componentes do fluxo de caixa . / The Discovery of Pr?-Sal (huge oil field located in a pre-salt layer undersea) in 2006 increased the persperctive of petroleum production to Brazil. Characterized as an light oil (28? - 30? API) comparing to the national average, many challenges were overcome to make the exploration economically viable. One of the problems found to produce oil from that region was the high percentage of carbon dioxide (between 8% and 12%), reaching 75% molar in some regions like J?piter field. The alternative found was to reinject the carbon dioxide from the separation of the natural g?s made on own production platform (an FPSO). The reinjection study was realized from the modeling of an light oil, with 8% of carbon dioxide, and an homogeneous oil reservoir, semi-synthetic, with similar characteristics to that region. It was implemented a Project with a time of 35 years and studied the following paramethers: Carbon dioxide flow rate, vertical distance between horizontal rigs used, distance from the rig to the base of the reservoir and the length of the producer rig to the injector rig. After choosing the best scenario, it was realized an analysis of the sensibility related to the injection flow rate reaching a fraction of recovered oil of 64%. In sequence, was realized an economic analysis from two cases: for the first one was admitted the purchase of carbon dioxide from an anthropogenic source and its transport to the platform made by a carboduct. The second case was considered the reinjection of produced gas by the rig from the process of membrane permeation with posterior reinjection. The first one obtained a maximum NPV (Net Present Value) of US$129.885.806,68 and the second one a maximum NPV of US$325.329.657,00. At last, was realized an uncertainty analysis towards the components values of the cash flow for both cases, verifying wich components is more sensitive to the NPV.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/21334 |
| Date | 19 April 2016 |
| Creators | Oliveira, Ant?nio Italo Alves de |
| Contributors | 00946709947, http://lattes.cnpq.br/4637897380055777, Diniz, Anthony Andrey Ramalho, 02275400427, http://lattes.cnpq.br/1045979459961821, Galv?o, Edney Rafael Viana Pinheiro, 04860249461, http://lattes.cnpq.br/3142315953748654, Barillas, Jennys Lourdes Meneses |
| Publisher | Universidade Federal do Rio Grande do Norte, PROGRAMA DE P?S-GRADUA??O EM CI?NCIA E ENGENHARIA DE PETR?LEO, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| 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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