Comparative Experimental Study of Rock Cutting under High Confining Pressure and Atmospheric Conditions Using PDC Cutter

Kian Sheikhrezaei, Arash Dahi Taleghani

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

Abstract

While cutting metals is a well-studied problem, rock cutting due to its inherent complexity and more complicated physics due to its granular structure is less-known. The substantial role of the pore fluid pressure and confining pressure in the cutting process is one of these differences that may surface in practical engineering problems especially in deep subsurface drilling. Two sets of experiments were conducted in this research using single polycrystalline diamond compact (PDC) cutters. Regular scratch tests conducted in atmospheric pressure on Carthage Marble were compared with scratch/cutting tests performed under pressure. Finite element analysis (FEA) is then carried out to determine failure parameters by match lab measurement to investigate any potential changes in rock failure properties. It has been observed that pressurized conditions as low as 250 psi may convert the cutting process from intuitive fracture initiation and coalescence phenomenon to rock scooping. More ductile failure, formation of cutting ribbons and the size of cracks are some of these characteristics which are not observed in low confining pressures.

Original languageEnglish (US)
Title of host publicationPoromechanics 2017 - Proceedings of the 6th Biot Conference on Poromechanics
EditorsPatrick Dangla, Jean-Michel Pereira, Siavash Ghabezloo, Matthieu Vandamme
PublisherAmerican Society of Civil Engineers (ASCE)
Pages1900-1908
Number of pages9
ISBN (Electronic)9780784480779
DOIs
StatePublished - Jan 1 2017
Event6th Biot Conference on Poromechanics, Poromechanics 2017 - Paris, France
Duration: Jul 9 2017Jul 13 2017

Publication series

NamePoromechanics 2017 - Proceedings of the 6th Biot Conference on Poromechanics

Other

Other6th Biot Conference on Poromechanics, Poromechanics 2017
CountryFrance
CityParis
Period7/9/177/13/17

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Acoustics and Ultrasonics

Cite this

Sheikhrezaei, K., & Taleghani, A. D. (2017). Comparative Experimental Study of Rock Cutting under High Confining Pressure and Atmospheric Conditions Using PDC Cutter. In P. Dangla, J-M. Pereira, S. Ghabezloo, & M. Vandamme (Eds.), Poromechanics 2017 - Proceedings of the 6th Biot Conference on Poromechanics (pp. 1900-1908). (Poromechanics 2017 - Proceedings of the 6th Biot Conference on Poromechanics). American Society of Civil Engineers (ASCE). https://doi.org/10.1061/9780784480779.235