Bench X-ray microtomography of water-salt solution/oil injected into samples of the Botucatu formation

Leonardo Carmezini Marques; Carlos Roberto Appoloni

doi:10.5433/1679-0375.2022v43n2p199

Microcomografia de raios X de bancada aplicada a solução água-sal/óleo em amostras da formação Botucatu

Autores

Leonardo Carmezini Marques Instituto Federal do Paraná - IFPR https://orcid.org/0000-0003-3772-0856
Carlos Roberto Appoloni Universidade Estadual de Londrina - UEL https://orcid.org/0000-0002-0694-5596

DOI:

https://doi.org/10.5433/1679-0375.2022v43n2p199

Palavras-chave:

microtomografia de raios x, fluidos, microestrutura, arenito

Resumo

Este trabalho contém os detalhes da utilização da microtomografia de raios X para obtenção de imagens da microestrutura interna de amostras de arenito da Formação Botucatu. O principal objetivo foi identificar diferentes fases de fluidos quando injetadas na amostra para avaliar as diferentes fases através de histogramas de tons de cinza obtidos das imagens 2D, quantificar fases de fluidos e gerar imagens 3D da região escaneada. Os fluidos utilizados nos experimentos foram: um óleo comercial, um óleo industrial e solução água-sal. Resultados quantitativos das análises 2D e 3D são apresentados e comparados com o volume de solução injetado. As distribuições de tamanho de fase indicaram quais raios de poro foram mais relevantes para a percolação de fluidos através da amostra. A análise das projeções e das imagens 2D, juntamente os perfis de porcentagem média de ar nos poros indicaram a ocorrência de caminhos preferenciais de percolação. As imagens 2D permitiram a medida do ângulo de contato entre as fases presentes na amostra contendo óleo industrial. Perfis de porcentagem média de ar nos poros, obtidos com as imagens 2D de diferentes medidas da amostra contendo óleo comercial, mostraram efeitos de capilaridade ocorrendo temporalmente.

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Biografia do Autor

Leonardo Carmezini Marques, Instituto Federal do Paraná - IFPR

Prof. Dr., IFPR, Londrina, Paraná.

Carlos Roberto Appoloni, Universidade Estadual de Londrina - UEL

Prof. Dr., Dept. Física, Grupo de Física Nuclear Aplicada

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