A Method for Evaluating the Rock Breaking Efficiency of Cutters and Optimizing the PDC Cutter Profile—A Study of Igneous Rock Formations in Shunbei Oilfield [PDF]
Energies, 2022 The Permian igneous rock in Shunbei Oilfield exhibits high rock strength, which results in a low rate of penetration (ROP) and shortens the cutter’s service life. It is necessary to analyze and evaluate the rock breaking effect of cutters.
Zhuoxin Dong +6 more
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Research on Rock-Breaking Characteristics of Cutters and Matching of Cutter Spacing and Penetration for Tunnel Boring Machine [PDF]
BuildingsTunnel boring machine (TBM) tunnel construction in composite strata relies heavily on understanding the rock-breaking characteristics of TBM cutters and optimizing cutter spacing and penetration.
Huipeng Zhang +3 more
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Progress and trends in non-tool rock breaking theory and technology [PDF]
Meitan xuebaoWith the gradual implementation of China’s deep-earth engineering strategy, deep resource extraction and underground space construction have brought in some new opportunities, but they also face many challenges, with extreme geological conditions such as
Jianping WEI +6 more
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Flow Field Simulation of Swirling Abrasive Jet Nozzle for Hard Rock Breaking [PDF]
Geofluids, 2022 Radial jet drilling (RJD) technology has been proved to be an economical and efficient stimulation technology for oil and gas, geothermal, hydrate, etc. but conventional RJD technology adopts pure water jet to break rock and form laterals, which has low rock breaking efficiency and is unable to effectively break hard rock such as shale.
Zhang Dongqing +4 more
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Experimental Study on Rock Breaking Effect of Axe-Shaped and Triangular-Ridged Cutters Under Impact Load [PDF]
Shiyou jixieIn drilling engineering， optimized cutter selection for specific formations is critical to enhance rock breaking efficiency. To this end， a Split Hopkinson Pressure Bar （SHPB） apparatus was used to conduct impact-induced rock breaking tests of triangular-
Li Yunzhu +6 more
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Experimental Investigation on Hard Rock Breaking with Fiber Laser: Surface Failure Characteristics and Perforating Mechanism [PDF]
Advances in Civil Engineering, 2020 The rock‐breaking characteristics and the influence factors of laser perforation are investigated in this study. A series of fiber laser perforation experiments on basalt, sandstone, and granite were conducted. Experimental measurements of rock failure morphologies and composition tests showed that the main surface features are thermal cracks and ...
Xiaofeng Yang +4 more
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Investigation of the Rock-Breaking Mechanism of Drilling under Different Conditions Using Numerical Simulation [PDF]
Applied Sciences, 2023 The interaction between the drill bit and rock is a complex dynamic problem in the process of drilling and breaking rock. In this paper, the dynamic process of drilling and breaking rock is analyzed using ABAQUS software.
Xinxing Liu +3 more
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Breaking and Instability Movement Characteristics of High-Position Double-Layer Hard Thick Strata due to Longwall Mining [PDF]
Shock and Vibration, 2020 With multilayer hard roof occurring above the mining area, the strata behaviors will be significantly affected by their special characteristics and interaction.
Pu Wang, Jinquan Jiang, Bin Xu
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Wear Prediction and Mechanism Study of Tunnel Boring Machine Disc Cutter Breaking in Hard–Soft Rock Considering Thermal Effect [PDF]
Applied SciencesThe TBM disc cutter cuts soft–hard composite strata during shield construction, and the cutter–rock cutting process generates high temperatures and severe wear.
Xiongfei Lyu +3 more
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Rock Breaking by Conical Pick Assisted with High Pressure Water Jet [PDF]
Advances in Mechanical Engineering, 2014 In the process of hard rock breaking, the conical pick bears great cutting force and wear, and the cutting efficiency is lower. Thus different combination ways of water jet and conical pick were proposed to solve this issue; for instance, water jet ...
Liu Songyong, Chen Junfeng, Liu Xiaohui
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