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J. Imaging 2018, 4(11), 134; https://doi.org/10.3390/jimaging4110134

Algorithms for 3D Particles Characterization Using X-Ray Microtomography in Proppant Crush Test

Schlumberger Moscow Research Center, Pudovkina str. 13, Moscow 119285, Russia
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Received: 4 October 2018 / Revised: 4 November 2018 / Accepted: 9 November 2018 / Published: 12 November 2018
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Abstract

We present image processing algorithms for a new technique of ceramic proppant crush resistance characterization. To obtain the images of the proppant material before and after the test we used X-ray microtomography. We propose a watershed-based unsupervised algorithm for segmentation of proppant particles, as well as a set of parameters for the characterization of 3D particle size, shape, and porosity. An effective approach based on central geometric moments is described. The approach is used for calculation of particles’ form factor, compactness, equivalent ellipsoid axes lengths, and lengths of projections to these axes. Obtained grain size distribution and crush resistance fit the results of conventional test measured by sieves. However, our technique has a remarkable advantage over traditional laboratory method since it allows to trace the destruction at the level of individual particles and their fragments; it grants to analyze morphological features of fines. We also provide an example describing how the approach can be used for verification of statistical hypotheses about the correlation between particles’ parameters and their crushing under load. View Full-Text
Keywords: unsupervised segmentation; watershed; shape factor; compactness; axes of equivalent ellipsoid; geometric moments; invariants; porosity; matching of particles unsupervised segmentation; watershed; shape factor; compactness; axes of equivalent ellipsoid; geometric moments; invariants; porosity; matching of particles
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Safonov, I.; Yakimchuk, I.; Abashkin, V. Algorithms for 3D Particles Characterization Using X-Ray Microtomography in Proppant Crush Test. J. Imaging 2018, 4, 134.

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