Application of an innovative ridge-ladder-shaped polycrystalline diamond compact cutter to reduce vibration and improve drilling speed

Xie, Dou; Huang, Zhiqiang; Yan, Yuqi; Ma, Yachao; Yuan, Yuan

doi:10.1177/0036850420930971

Cited by 9 publications

(4 citation statements)

References 21 publications

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“…After ensuring the steady-state temperature of the bit, the temperature of the PDC bit cutting teeth at any distance from the interface at any time can be expressed as: 36 where p is the distance to the PDC bit cutting teeth, t is the cutting time, ρ2 is the density of cutting teeth, and T0normal″ is the environmental temperature.…”

Section: Temperature Model Of Pdc Bit Cutting Teethmentioning

confidence: 99%

“…Polycrystalline diamond compact (PDC) is a special super-hard material synthesized by artificial diamond and cemented carbide in one-time synthesis under high-temperature conditions, 1 which not only has the advantages of high hardness and wear resistance of diamond, but also has the characteristics of strong impact resistance and large blade emergence. Using it as the bit cutting teeth can improve the drilling efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Influence mechanism of polycrystalline diamond compact bit temperature rise based on thermo-fluid–solid coupling

Han,

Xue,

2023

Science Progress

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In order to improve the drilling performance of polycrystalline diamond compact bit and prolong its service life during drilling in coal rock under the action of wind cycle, the theoretical calculation model of polycrystalline diamond compact bit cutting teeth temperature was derived based on the theory of tribology and heat transfer. The theoretical temperature field of polycrystalline diamond compact bit-cutting teeth was analyzed. Using the joint simulation of EDEM–FLUENT, the temperature variation law of polycrystalline diamond compact bit cutting teeth under the thermo-fluid–solid coupling was analyzed to verify the validity of the theoretical calculation model of polycrystalline diamond compact bit cutting teeth temperature. By building a rotary drilling test platform and conducting drilling experiments on polycrystalline diamond compact bit under different drilling parameters respectively, the correctness of the theoretical model and the simulation data were verified. In addition, a response surface analysis model was established to study the influence of different drilling parameters on the polycrystalline diamond compact bit cutting teeth temperature during drilling in coal rock. The analysis results show that the influence degree of various drilling parameters on the polycrystalline diamond compact bit cutting teeth temperature from large to small is drilling pressure, drilling speed, coal rock properties, and wind speed. Compared with the working condition without wind cycle, the drilling efficiency of polycrystalline diamond compact bit can be increased by 14.38% and the temperature is reduced by 8% when it drills in coal. The drilling efficiency of polycrystalline diamond compact bit can be increased by 17.79% and the temperature is reduced by 10.5% when it drills in coal gangue.

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Section: Temperature Model Of Pdc Bit Cutting Teethmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence mechanism of polycrystalline diamond compact bit temperature rise based on thermo-fluid–solid coupling

Han,

Xue,

2023

Science Progress

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“…Thus, the PCD can be widely used in the processing field of non-ferrous metals alloys, ceramics, difficult-to-machine composite materials, etc. [1][2][3][4]. In the sintering process of PCD under high pressure, Co is often used as the metal binder [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

The Inﬂuence of Site of Co and Holes in PCD Substrate on Adhesive Strength of Diamond Coating with PCD Substrate

Hao,

Liu

2023

Coatings

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Polycrystalline diamond (PCD) prepared by the high temperature and pressure method often uses Co as a binder, which had a detrimental effect on the cutting performance of PCD, thus Co needed to be removed. However, the removal of Co would cause residual holes and also make the cutting performance of PCD poorer. To address this issue, hot filament chemical vapor deposition (HFCVD) was used. During deposition, the residual holes cannot be filled fully, and Co would diffuse to the interface between CVD diamond coatings and the PCD substrate, which influenced the adhesive strength of the diamond coating with the PCD substrate. In order to investigate the influencing mechanism, both experiments and the density functional theory (DFT) calculations have been employed. The experimental results demonstrate that Co and the holes in the interface would reduce the interfacial binding strength. Further, we built interfacial structures consisting of diamond (100), (110), (111) surfaces and PCD to calculate the corresponding interfacial binding energy, charge density and charge density difference. After contrast, for Co and the holes located on the (110) surface, the corresponding interfacial binding energy was bigger than the others. This means that the corresponding C-C covalent bond was stronger, and the interfacial binding strength was higher. Based on this, conducting cobalt removal pretreatment, optimizing the PCD synthetic process and designing the site of Co can improve the performance of the PCD substrate CVD diamond coating tools.

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“…Their indoor experimental findings indicated that, in comparison to axe and conventional cutters, the spine-step cutter manifested a reduction in lateral force, longitudinal force, and overall cutting force during the rock-fracturing process. Utilizing numerical simulations, a comprehensive drilling process comparison was executed among these cutter designs, which unveiled that the spine-step tooth configuration effectively precludes stick-slip vibrations in drilling operations while simultaneously enhancing rock-fracturing efficiency [12]. Yang et al engineered a hard alloy drill bit with a non-smooth surface, drawing inspiration from the drag reduction and wear-resistant properties evident in beetle surfaces.…”

Section: Introductionmentioning

confidence: 99%

Structure Design of Bionic PDC Cutter and the Characteristics of Rock Breaking Processes

Wu,

Yuan,

Zhang

et al. 2023

Processes

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The rational structural design of polycrystalline diamond compact (PDC) cutters effectively enhances the performance of drill bits in rock fragmentation and extends their service life. Inspired by bionics, a bionic PDC cutter was designed, taking the mole claw toe, shark tooth, and microscopic biomaterial structures as the bionic prototypes. To verify its rock-breaking effectiveness, the finite element method was employed to compare the rock-breaking processes of the bionic cutter, triangular prism cutter, and axe cutter. The study also investigated the influence of different back rake angles, cutting depths, arc radii, and hydrostatic pressures on rock breaking using the bionic cutter. Prior to this, the accuracy of the finite element model was validated through laboratory tests. Subsequently, a drill bit incorporating all three types of cutters was constructed, and simulations of rock breaking were conducted on a full-sized drill bit. The results demonstrate that the bionic cutter exhibits superior load concentration on the rock compared to the triangular prism cutter and the axe cutter. Additionally, its arc structure facilitates the “shoveling” of the rock, making it more susceptible to breakage under tensile stress. As a result, the efficiency of the bionic cutter surpasses that of the triangular prism and axe cutters. Similarly, it exhibits minimal fluctuations and values in cutting force. As the back rake angle and cutting depth increase, the MSE and cutting force of all three cutters also increase. However, the bionic cutter consistently maintains the lowest MSE and cutting force, confirming the superiority of its bionic structural design. The MSE and cutting force of the bionic cutter fluctuate with the increase of the arc radius, and the optimal arc radius falls within the simulation range, between 21 mm and 23 mm. Compared to the other two types of cutters, bionic cutters possess a unique structure that allows for better release of internal stress within the rock, thereby ensuring higher efficiency in rock-breaking, particularly in deep geological formations. The rock breaking simulation results of full-sized drill bits show that the use of a bionic cutter can improve the drill bit’s ability to penetrate the formation, reduce the possibility of drill bit bounce during the rock breaking process, prevent the occurrence of stick-slip, improve the drilling stability, effectively improve the efficiency and service life of the drill bit during the rock breaking process, and reduce the drilling cost. It is concluded that the research results of bionic PDC cutters are helpful to the development of high-performance drill bits and the reduction of drilling costs.

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Application of an innovative ridge-ladder-shaped polycrystalline diamond compact cutter to reduce vibration and improve drilling speed

Cited by 9 publications

References 21 publications

Influence mechanism of polycrystalline diamond compact bit temperature rise based on thermo-fluid–solid coupling

Influence mechanism of polycrystalline diamond compact bit temperature rise based on thermo-fluid–solid coupling

The Inﬂuence of Site of Co and Holes in PCD Substrate on Adhesive Strength of Diamond Coating with PCD Substrate

Structure Design of Bionic PDC Cutter and the Characteristics of Rock Breaking Processes

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