Analytical and Experimental Investigations of Rock Cutting Using Polycrystalline Diamond Compact Drag Cutters

Swenson, Daniel; Wesenberg, D. L.; Jones, A. K.

doi:10.2118/10150-ms

Cited by 11 publications

(2 citation statements)

References 2 publications

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“…Zeuch. D. H. et al [12], D. V. Swenson et al [13], and J. T. Finger et al [14], respectively, studied the fragmentation of rock through single-cutter cutting experiments. Rojek et al [15] used DEM to conduct two-dimensional and three-dimensional modeling of the rock fracture process.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigations for Rock-Breaking Process and Cutter Layout Optimization of a PDC Drill Bit with Dual-Cutter

Huang,

Li,

Xie

et al. 2024

Buildings

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PDC (polycrystalline diamond compact) drill bits are widely employed for rock-breaking in many industries like underground engineering and building constructions. The cutter layout would directly affect the overall performance of the drill bits. Field applications show that the staggered cutter layout strategy of dual-cutter can increase the drilling efficiency of the PDC bit. In order to explore the rock breaking mechanism of this type of drill bit, a numerical model of a dual-cutter and rock breaking with damage evolution based on a hybrid finite and cohesive element method (FCEM) has been established in this work. The model is verified through Brazilian disk tests. The rock breaking processes of this type of bit have been analyzed, including crack initiation, propagation, and the formation of rock debris. Moreover, the effects of horizontal and vertical offset of the back cutter on the MSE (mechanical special energy) have been investigated. Results demonstrate that the dual-cutter can prominently reduce the MSE compared to a single-cutter. The vertical offset of the back cutter has a minor effect on the MSE, while the horizontal offset is of great significance on the MSE. On this basis, the relationships between the MSE and both the vertical and horizontal offset coefficients have been built based on the response surface methodology (RSM). Finally, an optimized layout solution, with optimal vertical and horizontal offset coefficients of 0.641 and 0.497, is determined via the Gray Wolf algorithm.

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Section: Introductionmentioning

confidence: 99%

Numerical Investigations for Rock-Breaking Process and Cutter Layout Optimization of a PDC Drill Bit with Dual-Cutter

Huang,

Li,

Xie

et al. 2024

Buildings

View full text Add to dashboard Cite

show abstract

“…Swenson et al (4) described a constitutive model for rock in which fracturing occurs due to both tensile and shear stresses. Their model was incorporated into the finite element code (HONDO) and the analytical results were compared with both material model verification tests and single cutter tests (5) .…”

Section: Chapter 2 Literature Reviewmentioning

confidence: 99%

Parametric study of a single PDC cutter with a numerical model

Sunal¹

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Single cutter models constitute a cornerstone to understand the cutting process while drilling. There are various experimental and numerical studies on simulating cutting behavior of a single cutter in order to optimize drilling performance. In this study, the numerical model developed to analyze single PDC cutter performance was verified with the experimental data. Numerous runs with different model properties and rock post failure properties were conducted for the purpose of creating a model that works accurately in different conditions. The data used in this study for model verification was obtained from an experimental study reported in the literature. The study focuses on a single cutter-rock model to understand how axial and rotational loads change under different cutting conditions. The model is composed of a single cutter interacting with the rock specimen and was developed using FLAC 3D , an explicit finite difference program. Back analysis was performed with the reported laboratory experiments and various formation parameters in the model were varied to match the experimental results. iii DEDICATION This thesis is dedicated to my mom, Halide and my dad, Nuri for their unconditional love and spiritual help and for making me who I am today, my brother, Kamil whose help and support were always with me and his dear wife, Esra, and my lovely nephew, Nuri Alp, my source of motivation.

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Anisotropy on the ductile-to-brittle transition for rock in process of drilling

Wang

Yuan

et al. 2023

Acta Geophys.

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Analytical and Experimental Investigations of Rock Cutting Using Polycrystalline Diamond Compact Drag Cutters

Cited by 11 publications

References 2 publications

Numerical Investigations for Rock-Breaking Process and Cutter Layout Optimization of a PDC Drill Bit with Dual-Cutter

Numerical Investigations for Rock-Breaking Process and Cutter Layout Optimization of a PDC Drill Bit with Dual-Cutter

Parametric study of a single PDC cutter with a numerical model

Anisotropy on the ductile-to-brittle transition for rock in process of drilling

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