Boletín de Geología

Vol. 44 No. 2 (2022): Boletín de Geología
Artículos científicos

Determination of turning angle for extraction of plugs from preserved cores using X-ray images tomography

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  • Edwar Herrera-Otero,
  • Juan Badillo-Requena,
  • Zaida Carolina Pereira-Santana
Edwar Herrera-Otero
Universidad Industrial de Santander
Juan Badillo-Requena
Universidad Industrial de Santander
Zaida Carolina Pereira-Santana
Universidad Industrial de Santander
DOI: https://doi.org/10.18273/revbol.v44n2-2022010

Published 2022-07-07

Keywords

  • Plugs,
  • X-ray tomography,
  • Nomogram,
  • Drilling core,
  • Turning angle

How to Cite

Herrera-Otero, E., Badillo-Requena, J., & Pereira-Santana, Z. C. (2022). Determination of turning angle for extraction of plugs from preserved cores using X-ray images tomography. Boletín De Geología, 44(2), 199–210. https://doi.org/10.18273/revbol.v44n2-2022010

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Abstract

The plugs are subsamples extracted from drilling cores, which are used to measure directly the properties associated with the rock and its interactions with the fluid. Any petrophysics model must have laboratory data from the samples to be calibrated. Due to this, it is important that samples are representative and in a good condition. This research proposes a methodology to determine exactly the location of interest points, including the turning angle of the core for its further extraction. This guarantees the integrity and representativeness when the interest zone is selected through well logging. The methodology uses X-ray tomography images on axial, radial, and vertical cuts. It was possible to create equations to measure in scaled images the real dip angle in the cylindric images and vertical cuts. It was also possible to create two nomograms that allow calculating the turning angle of the drilling core, once the dip data of the interest structure is calculated.

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