Results 1 to 10 of about 40,923 (148)

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.
Xiaofeng Yang, Xin Zhou, Hongliang Zhu, Jiaheng Zhou, Yanhong Li   +4 more
doaj   +2 more sources

Automated experimental platform and mechanics testing of rock breaking using different lasers

Journal of Intelligent Construction
Addressing the challenge of breaking rocks deep within the earth requires innovative solutions, and the pulsed laser technology has emerged as a promising noncontact alternative for rock breaking.
Gaofeng Zhao, Zhe Li, Yao Du, Fuxin Rui, Liang Wu, Kai Liu, Xiaobao Zhao, Ping Che   +7 more
doaj   +2 more sources

Laser Irradiation on Limestone and Cracking: An Experimental Approach

Applied Sciences, 2023
Using mechanical drilling to obtain energy resources stored in deep and hard rock layers is becoming increasingly challenging. Therefore, laser irradiation has emerged as a new and promising drilling method.
Jiawei Liu, Yongan Xin, Weiping Lv, Ye Zhu, Bin Ren, Haizeng Pan, Yi Hu   +6 more
doaj   +1 more source

Research progress of 3D printing PDC and PDC bit

Jin'gangshi yu moliao moju gongcheng, 2023
PDC bit has become the preferred type of drill bits in the field of oil and gas exploration. The ever-increasing performance requirements of PDC bits, especially the drilling efficiency, have brought great challenges to the drill bits. The improvement of
Jingjing WU, Shaohe ZHANG, Feilong QU, Zhou SU, Xiangwang KONG, Tao HE   +5 more
doaj   +1 more source

The status and development strategy of coalbed methane industry in China

Petroleum Exploration and Development, 2023
To achieve the goals of carbon peaking and carbon neutrality under the backgrounds of poor resource endowments, weak theoretical basis and other factors, the development of the coalbed methane industry of China faces many bottlenecks and challenges. This
Fengyin XU, Wei HOU, Xianyue XIONG, Borui XU, Peng WU, Hongya WANG, Kun FENG, Jian YUN, Shuguang LI, Lei ZHANG, Xia YAN, Huijun FANG, Qian LU, Delei MAO   +13 more
doaj   +1 more source

Accuracy Assessment of “Step-by-Step” Simulation Modeling Method for Rock Breaking by TBM Disc Cutters Assisted with Laser

Periodica Polytechnica Civil Engineering, 2023
Rock breaking by laser-assisted disc cutters is a novel high-efficiency rock breaking mode that combines mechanical stress induced by the disc cutters with thermal cracking by laser. This paper presented a “step-by-step” simulation modeling concept, and conducted an in-depth study on potential influencing factors of simulation accuracy at each key step.
Kui Zhang, Minghai Kuang, Jingang Liu, Xuejun Zheng, Shuo Qiao   +4 more
openaire   +1 more source

Tetragonal CuO: A new end member of the 3d transition metal monoxides [PDF]

, 2008
Monoclinic CuO is anomalous both structurally as well as electronically in the 3$d$ transition metal oxide series. All the others have the cubic rock salt structure.
Beasley, Malcolm R., Blank, D.H.A., Geballe, Theodore H., Grant, Paul, Hammond, Robert H., Koster, Gertjan, Siemons, Wolter   +6 more
core   +5 more sources

Comparison of Material Properties and Microstructure of Specimens Built Using the 3D Systems Vanguard HS and Vanguard HiQ+HSSLS Systems [PDF]

, 2007
The HiQ upgrade to the 3D Systems Vanguard selective laser sintering (SLS) machine incorporates a revised thermal calibration system and new control software.
Hall, A., Koo, J. H., Silverman, T. J., South, B., Yong, W.   +4 more
core   +2 more sources

Transformation of a Large Ancient Oil Reservoir to a Dry Gas Reservoir: A Case Study of the Kela-2 Gas Field in the Kuqa Foreland Basin, NW China

Geofluids, 2022
Various lines of evidence, including the occurrence of bitumen and fluid inclusions, show that oil charge once took place in the Kela-2 gas field, Kuqa foreland basin, Northwest China.
Xuesong Lu, Zhichao Yu, Keyu Liu, Mengjun Zhao, Junjia Fan, Xiaowen Guo, Qingong Zhuo, Lili Gui   +7 more
doaj   +1 more source

Improving rock classification in terms of explosivity [PDF]

, 2019
Purpose. To improve rock classification in terms of explosivity relying upon the detailed analysis of characteristics of rating classifications available in the Russian Federation and in the world. Methods.
Kirsanov, A, Kurchin, G, Lobatsevich, M, Trebush, Yu, Vokhmin, S, Zaitseva, E   +5 more
core   +1 more source