Results 21 to 30 of about 203 (110)
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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Results in Materials, 2021 An attempt was made to identify the sources of residual stress in polycrystalline diamond compact (PDC) cutters by X-ray diffraction (XRD) technique. PDC retains residual stress after sintering and this residual stress plays an important role for cutter ...
Debkumar Mukhopadhyay
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An Experimental and Numerical Simulation Study on Rock Cutting Based on Pre-Breaking
Shiyou jixie, 2019 The design of the mixed-cutter placement can only rely on the engineering experience. The combination of experiment and numerical simulation is used to study the rock breaking force and rock breaking efficiency of the PDC cutter under different pre ...
Liu Zhong, Hou Huihui, Hu Wei
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ABAQUS-Based Parameterized Cutter Layout and Rock Breaking Simulation of PDC Bits
Shiyou jixie, 2020 In recent years, structures and types of PDC bits undergone significant changes, which puts forward higher requirements on cutter layout design. As reasonable cutter layout is the key to ensure the drilling life of PDC bits, a parameterized cutter layout
吴泽兵 +4 more
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Journal of Petroleum Exploration and Production Technology, 2019 The unconventional reservoir geological complexity will reduce the drilling bit performance. The drill bit poor performance was the reduction in rate of penetration (ROP) due to bit balling and worn cutter and downhole vibrations that led to ...
Ahmad Zhafran Ayop +10 more
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FRACTOGRAPHIC ANALYSIS OF PDC CUTTER FAILURE MECHANISMS
IZVESTIA VOLGOGRAD STATE TECHNICAL UNIVERSITYThe paper presents the results of a study of the physical mechanisms of operational damage and failure of polycrystalline diamond layers in PDC cutters (Polycrystalline Diamond Compact), which are the cutting elements of diamond and matrix drill bits. For this purpose, fractographic analysis of the fracture surfaces of the diamond layer in PDC cutters ...
V.A. KOLIBASOV +5 more
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Cutting Test Device for PDC Bit with Mixed Cutter Arrangement
Shiyou jixie, 2019 The existing PDC bit single-cutter test device is very inconvenient to adjust the parameters such as single-cutter rake angle. It is necessary to carry out frequent replacement of multiple sets of tools, which is not suitable for the mixed cutting ...
Liu Zhong +3 more
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Failure analysis and optimum structure design of PDC cutter
Mechanics, 2017 The PDC (Polycrystalline Diamond Compact) cutter is widely prevailed in the markets of measuring and cutting tools, down-hole tools of oil and gas drilling, mining and geothermal drilling industries. However, PDC cutters failure results in reduced bit life and low efficiency rock breaking thereby limiting the popularity and application of drilling ...
Chunyan Kong, Zheng Liang, Derong Zhang
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New Bit with Rolling PDC Cutter
Shiyou jixie, 2016 The new rolling PDC cutter drill bit technology could effectively address the fixed cutter eccentric wear issue,prolong durability,improve ROP,resulting in improved drilling efficiency and reduced drilling costs,which is a great step of drill bit ...
Shi Jiangang +4 more
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Cutting of Siliceous Dolomite by Special-Shaped PDC Cutter under Confining Pressure
Shiyou jixieThe dolomite formation is an important field for oil and gas exploration in the future. However， due to the high confining pressure environment in wellbore and the hard-to-drill characteristics of dolomite， traditional planar cutter PDC bit is prone to ...
Tian Wanqing +5 more
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