Results 11 to 20 of about 47,748 (185)
Meitian dizhi yu kantanObjectiveTo improve the rock-breaking efficiency and durability of drill bits in the theoretical research on the optimal design of drill bits, the key is to systematically reveal both the rock-breaking mechanisms of polycrystalline diamond compact (PDC ...
Jiusen WEI, Xin HAN, Wei LIU, Deli GAO
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Grading Method for PDC Cutter Wear Based on Improved HRNet and Ellipse Fitting
Shiyou jixieThe current PDC cutter wear grading has problems of low efficiency， poor standardization and insufficient accuracy. This paper presents a wear grading method based on improved HRNet and ellipse fitting. First， the contour of the PDC cutter was extracted.
Cheng Zhanbo +5 more
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Applied Sciences, 2019 The low rock breaking efficiency of conventional polycrystalline diamond compact (PDC) bits in hard abrasive formations prompts the development of PDC cutting elements from the planar structure to the non-planar structure.
Jianxun Liu +4 more
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EFFECT OF CUTTING PARAMETERS ON TEMPERATURE OF A SINGLE POLYCRYSTALLINE DIAMOND COMPACT (PDC) CUTTER [PDF]
Platform, a Journal of Engineering, 2020 The usage of polycrystalline diamond compact (PDC) drill bit has significantly increased in the petroleum industry due to its high rate of penetration and long life.
Abdul Hazim Abdullah +1 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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A study on PDC drill bits quality [PDF]
, 2013 The quality of innovating PDC (Polycrystalline Diamond Compact) bits materials needs to be determined with accuracy by measuring cutting efficiency and wear rate, both related to the overall mechanical properties.
Gerbaud, Laurent +4 more
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Experimental Study on Force of PDC Cutter Breaking Rock [PDF]
, 2014 Because the anisotropy of shale formation should result in that wellbore deviations is unpredictable, the bit-rock interaction should be fully lucubrated in order to eliminate this problem.
Jiajun, Wang, Renqing, He, Deyong, Zou
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Shiyou jixieWhen the PDC bit is used to drill conglomerate formations， the frequent impact loads reduce the expected life of PDC cutter， leading to frequent bit changes and ultimately affecting drilling efficiency.
Shi Jiangang +5 more
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Study on rock breaking law of ring groove PDC bit mixed PDC cutter and field test
Results in EngineeringIn order to solve the problems of low rock-breaking efficiency and poor bit stability of existing PDC bits in hard formation, a kind of annular PDC bit is proposed.
Kuilin Huang +4 more
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Numerical Simulation Study on Characteristics of Tight Hard Sand Broken by Axe-shaped PDC Cutter
Shiyou jixie, 2021 The study on the specific rock breaking mechanism of axe-shaped PDC cutter in the existing literatures is relatively less, the rock breaking characteristic test data are mostly for field application data, and there is short of theoretical basis of tooth ...
Zhao Runqi +5 more
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