Results 61 to 70 of about 489 (102)
Yantu gongcheng xuebaoThis study addresses the issues of severe wear and low rock-breaking efficiency of shaft sinking by drilling methods in the Jurassic strata of Western China, focusing on milled-tooth roller cutter commonly used in this drilling method.
CHENG Hua 1, 2, WANG Xiaoyun 1, YAO Zhishu 1, ZHU Jian 3, RONG Chuanxin 1, FU Xinpeng 4
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Characterization of Dolomite Stone Broken Under Axial Impact
Applied SciencesAs the extraction of oil and gas progresses into deeper and ultra-deep geological formations, the enhancement of rock-breaking efficiency in drill bits has emerged as a critical factor in ensuring energy security.
Ran Ji +5 more
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Natural Gas Industry BTo master changes in rock mechanical properties and the impact of high temperature on rock-breaking efficiency, the rock mechanical properties of granite, limestone, and sandstone under different temperatures and single-tooth static-pressure experiments were studied.
Dongdong Song +9 more
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AtmosphereStoring CO2 in oil and gas reservoirs offers a dual benefit: it reduces atmospheric CO2 concentration while simultaneously enhancing oil displacement efficiency and increasing crude oil production. This is achieved by injecting CO2 into producing oil and gas wells.
Wang, Yi, Zhao, Jian
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Parameter Optimization and Experimental Study of Particle Jet Impact Rock Breaking Nozzle
Shiyou jixie, 2018 As a core accelerating device of particles and water jet during particle jet impact rock breaking process, the nozzle’s accelerating ability determines the effect of rock breaking. On account of the straight-taper nozzle, the constant-acceleration nozzle
Ren Fushen, Fang Tiancheng, Cheng Xiaoze
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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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Bit-rock interface influence on the rock percussive breaking efficiency
The influence of representative BRI conditions (including rock chips/damage layer, confinement) on the rock breaking efficiency, under impact and in presence of WoB, will be ...
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Simulation on Microscopic Damage of PDC Cutter During Conglomerate Cutting
Shiyou jixieConglomerate generally has complex pore structures and severe heterogeneity.Drilling by PDC bit in conglomerate usually exhibits low rock-breaking efficiency, and the rock-breaking process of PDC cutter can hardly be investigated through laboratory ...
Yang Hongyu +4 more
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Study on Main Factors of Rock Breakage with High-pressure Cavitating Water Jets
工程科学与技术, 2009 :To reveal the effects of the hydraulic parameters and rock properties on the characters of the high-pressure cavitating water jets and to research the mechanism of the rock-breaking ability of the water jets affected by these characters, experiments of ...
Lu Yi-yu +4 more
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Highly efficient hard rock-breaking tool for mining machines
IOP Conference Series: Earth and Environmental Science, 2019 BL Gerike, VI Klishin, PB Gerike
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