Results 41 to 50 of about 203 (110)
New Progress and Future Development of PDC Bit
Shiyou jixie, 2016 A series of new PDC bits have been developed in foreign countries in order to raise rock breaking efficiency, extend bit service life and reduce trips, drilling cycle and drilling cost.
Pan Jun, Wang Minsheng, Guang Xinjun
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Mesoscopic Damage Simulation of Sandstone during PDC-Cutter Cutting
Shiyou jixie, 2023 In the process of rock cutting,the cutting parameters of the tool have important influences on the failure mode and rock-breaking efficiency.In order to investigate the mesoscopic damage of sandstone cut by PDC cutter under different cutting parameters ...
Yang Hongyu +4 more
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Cutting Efficiency of a Single PDC Cutter on Hard Rock
Canadian International Petroleum Conference, 2007 Abstract Polycrystalline diamond compact (PDC) bits have gained wide popularity in the petroleum industry for drilling soft and moderate-strength formations. However, in hard-formation applications the PDC bit still has limitations even though continuing developments in PDC cutter designs and materials have steadily
G. Hareland +3 more
openaire +2 more sources
Research on rock breaking mechanism of PDC cutter under the action of ultrasonic vibration.
PLoS ONEUltrasonic vibration technology has significant potential for breaking hard rocks. Understanding the optimal frequency for rock breaking under ultrasonic vibration can significantly reduce the cost of rock breaking and extend the service life of ...
Ruocheng Zhang +6 more
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Optimization of Hydraulic Structure of Rotary Cutting PDC Bit
Shiyou jixie, 2020 Few researches have been conducted on the hydraulic structure optimization design of rotary cutting PDC bit. Standard k-ε model and discrete phase model (DPM) are used to simulate the bottom hole flow field of rotary cutting PDC bit and optimize the ...
Cao Yang, Zhang Boyu
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Study on geometry and kinematics of spherical single-roller PDC bit
Advances in Mechanical Engineering, 2016 A spherical single-roller bit based on polycrystalline diamond compact (PDC) cutters is designed for the purposes of improving the adaptability of single-roller bit to the stratum with high hardness and abrasiveness.
Chunyan Kong +3 more
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Study on Flow Field Characteristics of Rotary Cutting PDC Bit Based on DPM Model
Shiyou jixie, 2021 In order to solve the problems of rotary cutting PDC bit such as uneven distribution of hydraulic energy, easy deposition of cuttings, chaotic flow traces and eddy current in returning area, the discrete phase particle model in numerical simulation was ...
Li Jin +3 more
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Evaluation on cutting performance of novel PDC cutter for pipe jacking machine
Underground SpaceIt is inevitable to cut reinforced concrete (RC) appeared in cross passage of city metro by cutting tools when constructing in densely populated area. The previous cutters employed to cut RC are insufficient and easily damaged, so a new polycrystalline ...
Long-Chuan Deng +5 more
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Experimental Study on High-Pressure Water Jet Assisted Conical PDC Cutter Breaking of Granite
Shiyou jixieDeep rocks are hard to abrade and drill,with complex geological conditions for operations.High-pressure water jet assisted drilling technology can effectively extend the service life of drill bits and improve the drilling efficiency in such deep ...
Wang Dayong +6 more
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Simulation Study on the Drilling of PDC Bit at Compound Drilling Condition
Shiyou jixie, 2016 The forces on the PDC bit at the bottomhole could impact the PDC bit drilling efficiency and cutter wear.The cutter-rock interactions could be more complex in compound drilling mode.A new PDC bit drilling simulation method for compound drilling based on ...
Zheng Jiawei +5 more
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