Evaluation of microporosity and density of carbonate rocks using gamma-ray and X-ray computed tomography techniques

Autores

  • Wellington da Silva Carvalho Departamento de Energia Nuclear, Universidade Federal de Pernambuco (UFPE), Cidade Universitária, Av. Professor Luiz Freire 1000, Recife, PE, Brasil. CEP: 50.740-545. https://orcid.org/0000-0003-4438-4424
  • Daniel Milian Pérez Departamento de Energia Nuclear, Universidade Federal de Pernambuco (UFPE), Cidade Universitária, Av. Professor Luiz Freire 1000, Recife, PE, Brasil. CEP: 50.740-545. https://orcid.org/0000-0002-3172-0508
  • Abel Gámez Rodríguez Departamento de Energia Nuclear, Universidade Federal de Pernambuco (UFPE), Cidade Universitária, Av. Professor Luiz Freire 1000, Recife, PE, Brasil. CEP: 50.740-545. https://orcid.org/0000-0002-1584-6768
  • Yaicel Ge Proenza Departamento de Energia Nuclear, Universidade Federal de Pernambuco (UFPE), Cidade Universitária, Av. Professor Luiz Freire 1000, Recife, PE, Brasil. CEP: 50.740-545. https://orcid.org/0000-0003-3894-8326
  • Patrício Luiz de Andrade Departamento de Energia Nuclear, Universidade Federal de Pernambuco (UFPE), Cidade Universitária, Av. Professor Luiz Freire 1000, Recife, PE, Brasil. CEP: 50.740-545. https://orcid.org/0000-0002-8245-4123
  • Daniel Amancio Duarte Departamento de Energia Nuclear, Universidade Federal de Pernambuco (UFPE), Cidade Universitária, Av. Professor Luiz Freire 1000, Recife, PE, Brasil. CEP: 50.740-545. https://orcid.org/0000-0003-3368-910X
  • Márcio Fernando Paixão de Brito Departamento de Energia Nuclear, Universidade Federal de Pernambuco (UFPE), Cidade Universitária, Av. Professor Luiz Freire 1000, Recife, PE, Brasil. CEP: 50.740-545. https://orcid.org/0000-0002-7644-1035
  • Cássia Bezerra Machado Departamento de Energia Nuclear, Universidade Federal de Pernambuco (UFPE), Cidade Universitária, Av. Professor Luiz Freire 1000, Recife, PE, Brasil. CEP: 50.740-545. https://orcid.org/0000-0001-9993-0678
  • Raquel Milani Departamento de Energia Nuclear, Universidade Federal de Pernambuco (UFPE), Cidade Universitária, Av. Professor Luiz Freire 1000, Recife, PE, Brasil. CEP: 50.740-545. https://orcid.org/0000-0001-8076-6118
  • Antonio Celso Dantas Antonino Departamento de Energia Nuclear, Universidade Federal de Pernambuco (UFPE), Cidade Universitária, Av. Professor Luiz Freire 1000, Recife, PE, Brasil. CEP: 50.740-545. https://orcid.org/0000-0002-4120-9404

DOI:

https://doi.org/10.24221/jeap.10.4.2025.7451.250-262

Palavras-chave:

Computed Tomography, gamma transmission, X-ray microtomography, carbonate rocks, porosity, density

Resumo

Computed Tomography (CT) techniques have emerged as a promising non-destructive method to analyze the physical properties of rocks and porous media. CT techniques provide quantitative and qualitative information without disturbing the internal structure of the samples, which is a significant advantage for studies focused on understanding subsurface characteristics. This study investigated the potential and application of gamma-ray computed tomography (y-CT) and X-ray microtomography (XR-uCT) for characterizing the microporosity and density of rocks, specifically carbonate rocks. Accurate characterization of these properties is crucial for evaluating water reservoir potentials, understanding geological formations, and assessing environmental impacts. The research aimed to validate the accuracy of both techniques and assess the feasibility of using a single XR-?CT projection to determine physical properties, potentially reducing computational demands. Validation involved samples with homogeneous, known composition, determining density and mass attenuation coefficients with both techniques, and comparing results to literature values. ?-CT achieved accuracy within 1.86%, while single-projection XR-?CT showed relative differences up to 10.65%. Subsequently, three carbonate rock samples were analyzed using XR-?CT with an average of four projections, improving accuracy over the single-projection method. Results from both CT techniques and literature values were compared, with ?-CT measuring parameters showing a relative difference of up to 4.58%, and the four-projection XR-?CT demonstrating strong accuracy. Relative differences in ?-CT were generally higher than XR-?CT, confirming the four-projection approach's significant improvements.

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Publicado

2025-12-27

Como Citar

Carvalho, W. da S., Pérez, D. M., Rodríguez, A. G., Proenza, Y. G., Andrade, P. L. de, Duarte, D. A., … Antonino, A. C. D. (2025). Evaluation of microporosity and density of carbonate rocks using gamma-ray and X-ray computed tomography techniques. Journal of Environmental Analysis and Progress, 10(4), 250–262. https://doi.org/10.24221/jeap.10.4.2025.7451.250-262

Edição

v. 10 n. 4 (2025): Journal of Environmental Analysis and Progress

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Articles - Artigos

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Copyright (c) 2025 Wellington da Silva Carvalho, Daniel Milian Pérez, Abel Gámez Rodríguez, Yaicel Ge Proenza, Patrício Luiz de Andrade, Daniel Amancio Duarte, Márcio Fernando Paixão de Brito, Cássia Bezerra Machado, Raquel Milani, Antonio Celso Dantas Antonino

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