Evaluation of shape parameters for rock fragments by 3D X-ray computed tomography and image processing

H. Suh, S. Han, T. Yun, K. Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Geothermal exploration and energy recovery involves drilling of rock formation which produces rock fragments. As the fragmented rock pieces and their assembly are uniquely correlated with the petrophysical properties of rock, the preliminary examination of shape parameters for rock fragments collected during drilling performance is attempted using high-resolution 3D x-ray computed tomographic imaging and a series of image processing techniques. The 3D stack of x-ray images is binarized to extract solid objects and individual rock fragments are independently separated by grouping connected voxels. The automated algorithms are developed to perform a series of shape parameters such as sphericity, roughness, flatness and elongation factor for each rock fragment and fragment size distribution. The distributions of gathered parameters are then subjected to the statistical evaluation to assess nonlinear fitting parameters. The feasibility of image-based estimation for rock properties based on rock fragments as a drilling by-product is discussed.

Original languageEnglish
Title of host publicationISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014
Editors Kaneko, Kodama, Shimizu
PublisherInternational Society for Rock Mechanics
Pages379-384
Number of pages6
ISBN (Electronic)9784907430030
Publication statusPublished - 2014
Event8th Asian Rock Mechanics Symposium, ARMS 2014 - Sapporo, Japan
Duration: 2014 Oct 142014 Oct 16

Publication series

NameISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014

Other

Other8th Asian Rock Mechanics Symposium, ARMS 2014
CountryJapan
CitySapporo
Period14/10/1414/10/16

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

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  • Cite this

    Suh, H., Han, S., Yun, T., & Kim, K. (2014). Evaluation of shape parameters for rock fragments by 3D X-ray computed tomography and image processing. In Kaneko, Kodama, & Shimizu (Eds.), ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014 (pp. 379-384). (ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014). International Society for Rock Mechanics.