Optimum design of the internal flushing channel of a drill bit using RSM and CFD simulation

Song, Chang-Heon; Kwon, Ki-Beom; Park, Jin‐Young; Oh, Joo-Young; Lee, Shinok; Shin, Dae-Young; Cho, Jung-Woo

doi:10.1007/s12541-014-0434-6

Cited by 29 publications

(18 citation statements)

References 21 publications

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“…e response characteristics of a drill bit (i.e., the damped characteristics) can be under, critical, or overdamped given its motion equation, that is, (1). e movement of the drill bit under loading and unloading conditions was examined.…”

Section: Bit Motion and Stress Wave Propagationmentioning

confidence: 99%

“…In general, THD is used mostly for mining and civil blasting works, where the rig drills into the earth usually to a depth of 1-20 m and at most 40 m; DTH is used mainly for groundwater development and can create holes to a maximum depth of 4000 m; and RD bores the deepest holes, most commonly for petroleum gas extraction and geothermal development, being propelled by its own weight to reach depths of up to 10,000 m [1].…”

Section: Introductionmentioning

confidence: 99%

“…e energy generated from the interactions between the drill bit and rock, and the rock penetration process, which are important in the research and evaluation of drill equipment. Song et al [1] proposed optimal design factors and range for top-hammer drill bit based on multiphase ow simulation and response surface methodology (RSM). Also, Song et al [8] designed a labscale testing system to test drilling performance of a drill bit and investigated the e ect of bit design factors on the performance of drilling.…”

Section: Introductionmentioning

confidence: 99%

“…e response characteristics resulting from the rock and the movement of the drill bit were also analyzed to investigate the e ciency or the transfer rate of the percussive energy from the piston to rock. e rock powder is discharged to the outside by compressed air supplied through a ushing duct located inside the drill bit, thus enabling the drill to proceed further [1]. Figure 2 illustrates the principles of impact and rock penetration by a percussive drilling system.…”

Section: Introductionmentioning

confidence: 99%

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Optimal Design Parameters of a Percussive Drilling System for Efficiency Improvement

Song

Chung

Cho

et al. 2018

Advances in Materials Science and Engineering

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is paper aims to determine the optimal design parameters for percussive drilling systems considering the bit-rock interaction. First, the motion dynamics of a bit impacted by a dropped piston are modeled by impact stress propagation and a rock-breaking mechanism representing the penetration resistance coefficient and unloading constant. Next, the damping vibration behavior of the bit is investigated considering the impact duration and the rock loading/unloading condition. In addition, the proposed dynamics are simplified by adopting two dimensionless parameters representing the bit-piston mass ratio and the rock-piston stiffness ratio. Finally, the drilling efficiency, defined by the energy transmitted from the piston to the rock, is presented in terms of the proposed parameters. e use of optimal design parameters for percussive drilling systems improved the drilling efficiency.ese results are applicable to the design and performance estimation of down-the-hole and top-hammer systems.

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Section: Bit Motion and Stress Wave Propagationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optimal Design Parameters of a Percussive Drilling System for Efficiency Improvement

Song

Chung

Cho

et al. 2018

Advances in Materials Science and Engineering

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show abstract

“…The response surface methodology (RSM) is a statistical and mathematical method which is used in engineering modeling (Han et al 2012;Saravanakumar et al 2014;Chen et al 2015;Li et al 2015;Poompipatpong and Kengpol 2015;Zhang et al 2015). Song et al (2014) conducted an optimal design of the internal flushing channel of a drill bit using the response surface methodology (RSM) and CFD simulation and obtained very good results.…”

Section: Introductionmentioning

confidence: 99%

Interactions between the fluid and an isolation tool in a pipe: laboratory experiments and numerical simulation

Hong

Zhao

2016

Pet. Sci.

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A remote-control tether-less isolation tool is a mechanical device that is normally used in pipelines to block the flow at a given position by transforming a blocking module. In this study, the interactions between the fluid and the plug module of the isolation tool were investigated. Simulations of the plug process and particle image velocimetry measurements were performed to study the flow characteristics. Numerical solutions for the continuity, momentum, and energy equations were obtained by using commercial software based on finite-volume techniques. Box-Behnken design was applied, and response surface methodology (RSM)-based CFD simulation analysis was conducted. The dynamic model in the plug process was built by RSM and used to evaluate the influences of the main mechanical parameters on the pressure during the plug process. The diameter of the isolation tool and the diameter of the plug module have strong influences on the process, and the length of the isolation tool has only a little influence on the plug process.

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Bionic surface design of cemented carbide drill bit

Yang

Xia

Zhou

et al. 2015

Sci. China Technol. Sci.

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Optimum design of the internal flushing channel of a drill bit using RSM and CFD simulation

Cited by 29 publications

References 21 publications

Optimal Design Parameters of a Percussive Drilling System for Efficiency Improvement

Optimal Design Parameters of a Percussive Drilling System for Efficiency Improvement

Interactions between the fluid and an isolation tool in a pipe: laboratory experiments and numerical simulation

Bionic surface design of cemented carbide drill bit

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