Effect of Cutting Tool Properties and Depth of Cut in Rock Cutting: An Experimental Study

Rostamsowlat, Iman

doi:10.1007/s00603-018-1440-2

Cited by 37 publications

(11 citation statements)

References 27 publications

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“…At shallow penetration depths, the friction force between the diamond particle and rock bottom sides is negligible and any increase in cutting force is due to the increase of penetration depth per rotation before it reaches the critical penetration depth (Detournay et al, 2008;Zhou and Detournay, 2014). Beyond the critical value of the penetration depth, the normal component of frictional force reaches a stable value and a limited value of the effective contact stress has also occurred (Rostamsowlat, 2018). In this stage, the incremental cutting response is governed by the pure cutting of the diamond particle.…”

Section: Discussionmentioning

confidence: 99%

Estimation of mechanics parameters of rock in consideration of confining pressure using monitoring while drilling data

Zhang¹,

Zhao²,

Xiao³

et al. 2023

Front. Earth Sci.

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During the drilling process, high-strength rock can lead to various issues such as drilling suppression, bit wear, and increased operational costs. To ensure safe and efficient drilling operations, it is crucial to accurately predict the strength parameters of the rock and recommend modifications to operational procedures. This paper proposes a low-cost and fast measurement method for predicting the strength parameters of rock in the field. To evaluate the effectiveness of this method, a drilling process monitoring experiment was conducted on sandstone, limestone, and granite. The experiment studied the effect of confining pressure on the response of cutting with an impregnated diamond bit. By analyzing the relationship between the thrust force, torque force, and penetration depth under different confining pressures, the researchers developed an analytical model for drilling that considers confining pressure, compressed crushed zone, and bit geometry. The results show that the confining pressure has a significant effect on the cutting response. As the confining pressure increases, the thrust force, torque force, and penetration depth at the cutting point also increase. Furthermore, a new measurement method was proposed to determine the strength parameters, such as cohesion, internal friction angle, and unconfined compressive strength. The estimated strength parameters for the three rock types using the drilling method were in good agreement with those of the standard laboratory test, with an error range of 10%. This method of estimating rock strength parameters is a practical tool for engineers. It can continuously and quickly obtain the drilling parameters of in-situ rocks.

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Section: Discussionmentioning

confidence: 99%

Estimation of mechanics parameters of rock in consideration of confining pressure using monitoring while drilling data

Zhang¹,

Zhao²,

Xiao³

et al. 2023

Front. Earth Sci.

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“…Results also show that the friction angle (φ) mobilized at the wear flat-rock interface is comparable with the internal friction angle (ϕ) of the rock under certain conditions (wear flat roughness, dry sample) [6,1,31,24,17,2,42]. Dagrain [15] and Rostamsowlat [44] have also shown that reducing the wear flat roughness can lead to a reduction in the friction coefficient which in turn leads to an increase in the contact stress (σ 3q−5q).…”

Section: Rock Cuttingmentioning

confidence: 92%

“…The onset of the plastic regime is located at about η p 30 which compares well with the results of numerical simulation [51], the limit scaled stress ( p ) is found equal to about 3.2 and 4.5 for Tuffeau and Mountain Gold, respectively, against about 2 for numerical simulation. However, numerical simulation assumes a friction coefficient at the interface quite high (µ = 0.557) while experimental results indicate a much lower value (for this particular cutter [43,44]), as presented in Fig. 18.…”

Section: Three Regimes Of Frictional Contactmentioning

confidence: 99%

Experimental investigation on the effect of wear flat inclination on the cutting response of a blunt tool in rock cutting

2018

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A vast majority of experimental research focuses on the cutting action of a sharp cutter while there has been limited experimental work devoted to the study of the contact process at the wear flat-rock interface. The specific objective of this study is to determine the effect of the wear flat inclination angle (β) with respect to the cutter velocity vector (v) on both the contact stress (σ) and friction coefficient (µ) mobilized at the wear flat-rock interface. An extensive and comprehensive set of cutting experiments was carried out on thirteen different sedimentary quarry rock samples using a state-of-the-art rock cutting equipment. A unique cutter holder was purposely designed and manufactured along with a precise experimental protocol implemented in order to change the back rake angle and therefore the inclination β by steps of 0.10 • . The experimental observations confirm the existence of three regimes of frictional contact (identified as elastic, elasto-plastic and plastic) for all rock samples. Further, the results suggest that the scaled contact stress is predominantly controlled by a dimensionless number η = E * tan β q with E * the plane strain elastic modulus and q the rock strength.

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“…This parameter has been successfully used to characterise the efficiency of a cutting tool in metal cutting (Khan et al, 2014(Khan et al, , 2012Sarwar, 1998;Sarwar et al, 2009Sarwar et al, , 2007 and it has been used in the drilling industry as a measure of cost per unit volume of rock removed (Atici and Ersoy, 2009) and correlated with other rock properties (Ersoy and Waller, 1995;Mohammadi et al, 2020;Rostamsowlat, 2018;Wang et al, 2018;Yurdakul and Akdasç, 2012).…”

Section: Figure 1 Chip Formation Model In Rock Cutting (Adapted From ...mentioning

confidence: 99%

Experimental investigation and numerical simulation of chip formation mechanisms in cutting rock-like materials

Aresh

Khan

Haider

2022

Journal of Petroleum Science and Engineering

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Effect of Cutting Tool Properties and Depth of Cut in Rock Cutting: An Experimental Study

Cited by 37 publications

References 27 publications

Estimation of mechanics parameters of rock in consideration of confining pressure using monitoring while drilling data

Estimation of mechanics parameters of rock in consideration of confining pressure using monitoring while drilling data

Experimental investigation on the effect of wear flat inclination on the cutting response of a blunt tool in rock cutting

Experimental investigation and numerical simulation of chip formation mechanisms in cutting rock-like materials

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