This paper deals with the drilling of rocks by fixed polycrystalline diamond cutters. Single-cutter experiments were carried out on evaporites and results are presented in terms of forces acting upon the cutter and mechanical specific energy spent during cutting action. The discrete element numerical method was used to simulate the single-cutter experiments based on rock properties obtained from high strain rate compression triaxial tests carried out on evaporites. The effects of depth of cut, cutter friction and geometry on drilling efficiency were studied. Drilling efficiency increases with DOC up to a certain level where it stabilizes. The decrease of drilling efficiency with increase of cutter friction and use of blunt cutters also indicates that the methodology is satisfactorily robust and accurate.
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ISRM Conference on Rock Mechanics for Natural Resources and Infrastructure - SBMR 2014
September 9–13, 2014
Goiania, Brazil
New Developments for Single-Cutter Modeling of Evaporites Using Discrete Element Method Available to Purchase
Carla Carrapatoso;
Carla Carrapatoso
Computational Geomechanics Group / GTE
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Sergio Augusto Barreto da Fontoura;
Sergio Augusto Barreto da Fontoura
Computational Geomechanics Group / GTE
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Nelson Inoue;
Nelson Inoue
Computational Geomechanics Group / GTE
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Paper presented at the ISRM Conference on Rock Mechanics for Natural Resources and Infrastructure - SBMR 2014, Goiania, Brazil, September 2014.
Paper Number:
ISRM-SBMR-2014-031
Published:
September 09 2014
Citation
Carrapatoso, Carla, da Fontoura, Sergio Augusto Barreto, Inoue, Nelson, Lourenço, Affonso, and David Curry. "New Developments for Single-Cutter Modeling of Evaporites Using Discrete Element Method." Paper presented at the ISRM Conference on Rock Mechanics for Natural Resources and Infrastructure - SBMR 2014, Goiania, Brazil, September 2014.
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