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Previous issue date: 2014-08-29 / The world's dependence on fossil fuels for power generation is causing an increase in the atmosphere CO2 concentration and leading to global warming. Alternatives are being developed to stabilize or even to reduce the CO2 levels in the atmosphere. Among them stands out the Carbon Geological Storage, which consists of storing permanently CO2 in suitable geological reservoirs and thus mitigate climate change. In this sense, the study of CO2 - rock - fluid interactions is essential for the understanding of the processes involved during the storage phase and safety of storage. This work aims to study caprocks and reservoir rocks from the Furnas and Ponta Grossa Formations of the Paran? Basin for carbon geological storage. The interaction between CO2-rock-fluid was studied simulating the geological conditions in laboratory experiments with high pressure (150 bar) reactors. Rock characterization pre-and postexperiments analyzes in Scanning Electron Microscope (SEM) and X-ray Diffractometer (XRD) were performed. Analysis of saline solution before and after the experiment was performed by Optical Emission Spectroscopy Inductively Coupled Plasma (ICP - OES) to identify ions present in solution. The results of this work demonstrated that the tested reservoirs and caprocks have limited interactions with CO2 resulting in limited mineral trapping mechanisms and high mineralogy integrity. / A depend?ncia mundial no uso de combust?veis f?sseis para gera??o de energia est? causando um aumento na concentra??o de CO2 na atmosfera e gerando mudan?as no clima. Alternativas est?o sendo desenvolvidas para estabilizar ou mesmo reduzir os n?veis de CO2 na atmosfera. Entre eles destaca-se o Armazenamento Geol?gico de Carbono, que consiste em armazenar permanentemente o CO2 em reservat?rios geol?gicos adequados e, assim, mitigar as emiss?es de CO2. Neste sentido, o estudo das intera??es que ocorrem entre o CO2 - rocha - fluido ? essencial para a compreens?o dos processos envolvidos durante a fase de armazenamento e para a seguran?a envolvida no processo. Este trabalho tem como objetivo estudar amostras de rocha selo (Forma??o Ponta Grossa) e rochas reservat?rio (Forma??o Furnas) da Bacia do Paran? simulando o processo de armazenamento geol?gico de carbono. A intera??o entre a ?gua CO2- rocha- fluido foi estudada atrav?s de experimentos em escala de laborat?rio, simulando as condi??es geol?gicas em reatores. Para a caracteriza??o das rochas pr? e p?s experimentos foram realizadas analises em Microsc?pio Eletr?nico de Varredura (MEV) e Difrat?metro de raios-X (DRX). An?lise da solu??o salina antes e ap?s os experimentos foram realizados por Espectroscopia de Emiss?o ?tica plasma indutivamente acoplado (ICP - OES) para identificar os ?ons presentes na solu??o. Os resultados destes estudos demonstraram que os reservat?rios e selos testados possuem limitada intera??o com CO2 resultando em baixo aprisionamento mineral evidenciado e alta integridade mineral?gica.
| Identifer | oai:union.ndltd.org:IBICT/oai:tede2.pucrs.br:tede/3269 |
| Date | 29 August 2014 |
| Creators | Bressan, Lia Weigert |
| Contributors | Ketzer, Jo?o Marcelo Medina |
| Publisher | Pontif?cia Universidade Cat?lica do Rio Grande do Sul, Programa de P?s-Gradua??o em Engenharia e Tecnologia de Materiais, PUCRS, BR, Faculdade de Engenharia |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da PUC_RS, instname:Pontifícia Universidade Católica do Rio Grande do Sul, instacron:PUC_RS |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | -7432719344215120122, 500, 600, -655770572761439785 |
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