Petrophysical characterization of coquinas from Morro do Chaves Formation (Sergipe-Alagoas Basin) by x-ray computed tomography

Authors

  • Aline Maria Poças Belila Universidade Estadual de Campinas http://orcid.org/0000-0001-8333-3529
  • Michelle Chaves Kuroda Universidade Estadual de Campinas. Faculdade de Engenharia Mecânica
  • João Paulo da Ponte Souza Universidade Estadual de Campinas. Instituto de Geociências
  • Alexandre Campane Vidal Universidade Estadual de Campinas. Instituto de Geociências
  • Osvair Vidal Trevisan Universidade Estadual de Campinas. Faculdade de Engenharia Mecânica

DOI:

https://doi.org/10.11606/issn.2316-9095.v18-124101

Keywords:

Coquinas, X-ray computed tomography, Petrophysics, Representative elementary volume

Abstract

Carbonate rocks constitute a large number of petroleum reservoirs worldwide. Notwithstanding, the characterization of these rocks is still a challenge due to their high complexity and pore space variability, indicating the importance of further studies to reduce uncertainty in reservoir interpretation and characterization. This work was performed for coquina samples from Morro do Chaves Formation (Sergipe-Alagoas Basin), analogous to important Brazilian reservoirs. Computed tomography (CT) was used for three-dimensional characterization of rock structure. The neural network named Self-Organizing Maps (SOM) was used for CT images segmentation. According to our tests, CT demonstrated to be a consistent tool for quantitative and qualitative analysis of heterogeneous pore space, by the evaluation of porosity, connectivity and the representative elementary volume.

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Author Biography

  • Aline Maria Poças Belila, Universidade Estadual de Campinas

    Géologa (Unicamp), Mestre em Geociências (Departamento de Geologia e Recursos Naturais - Instituto de Geociências - Unicamp), e doutoranda em Ciências e Engenharia do Petróleo (Departamente de Engenharia do Petróleo - Faculdade de Engenharia Mecânica - Unicamp).

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Published

2018-09-10

Issue

Vol. 18 No. 3 (2018)

Section

Articles

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How to Cite

Belila, A. M. P., Kuroda, M. C., Souza, J. P. da P., Vidal, A. C., & Trevisan, O. V. (2018). Petrophysical characterization of coquinas from Morro do Chaves Formation (Sergipe-Alagoas Basin) by x-ray computed tomography. Geologia USP. Série Científica, 18(3), 3-13. https://doi.org/10.11606/issn.2316-9095.v18-124101