Results 171 to 180 of about 142,974 (226)

Energy evolution mechanism of hard roof of working face adjacent to goaf after hydraulic fracturing and application. [PDF]

Sci Rep
Liu X, Liu H, Dong J, Sun W.
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Thermal characteristics and removal mechanism of high energy plasma jet rock-breaking

Petroleum Science
Yan-Cong Han, Chao Zheng, Yong-Hong Liu, Xin-Lei Wu, Ren-Peng Bian, Peng Liu   +5 more
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Insights from What Kids Can Do. [PDF]

CBE Life Sci Educ
Svoboda J.
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Deformation law of overlying rock strata during the initial mining period of a coal mining face: mechanical analysis. [PDF]

Sci Rep
Chuantian L, Zeyu L, Liting L, Yongliang H, Yuping F, Xiaoyuan S.   +5 more
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In Situ Heavy Crude Oil Upgrading via Catalytic Aquathermolysis with a Nickel-Based Catalyst Deposited Over a Rock Matrix. [PDF]

ACS Omega
Schacht-Hernández P, García-Gutiérrez JL, Quintana-Solórzano R, Jiménez-Cruz F, Miranda-Olvera AD.   +4 more
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Study on rock-breaking mechanism of axe-shaped PDC cutter

Journal of Petroleum Science and Engineering, 2021
Abstract Polycrystalline diamond compact (PDC) cutter is the key component of a drill bit. Recently the shaped PDC cutters, especially the axe-shaped cutter (ASC), have been warmly welcomed by the drilling engineers. However, the rock-breaking mechanism of ASC is rarely studied.
Fangyuan Shao, Wei Liu, Deli Gao, Yuchen Ye   +3 more
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On the rock-breaking mechanism of plasma channel drilling technology

Journal of Petroleum Science and Engineering, 2020
Abstract Plasma channel drilling (PCD), which is also known as high-voltage electric pulse drilling, is a highly efficient rock-breaking drilling technology with great development potential. This paper presents a method to study the rock-breaking mechanism of PCD technology.
Xiaohua Zhu, Yunxu Luo, Weiji Liu
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The three-dimension model for the rock-breaking mechanism of disc cutter and analysis of rock-breaking forces

Acta Mechanica Sinica, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhang, Zhao-Huang, Sun, Fei
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New Method for Studying Rock-Breaking Mechanism by Disc Cutters

Transactions of Tianjin University, 2017
Gaining a thorough understanding of the theoretical principles of rock breaking with a disc cutter is a critical issue in tunnel boring machine (TBM) technology. To fully consider the complexity and importance of the basic principles of rock breaking during tunnel excavation, in this paper we use a new method, the smooth particle hydrodynamics (SPH ...
Jianqin Liu, Huaicheng Bin, Wei Guo, Mengmeng Liu, Xuanbin Jia   +4 more
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Numerical Study on Rock-Breaking Mechanisms of Triangular-Shaped PDC Cutter

57th U.S. Rock Mechanics/Geomechanics Symposium, 2023
ABSTRACT Conventional PDC cutter usually gets broken when drilling into deep formations due to high hardness and strong abrasion. To help solve such a problem, triangular-shaped PDC cutters have been developed and utilized in the design of hybrid-cutters PDC bit, which have achieved enhanced rate of penetration and ...
He Wenhao, Li Xue, Zhang Runqing, Chen Zhenliang, Shi Huaizhong, Huang Zhongwei, Xiong Chao, Sun Jinming, Hu Chengtao   +8 more
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