Results 1 to 10 of about 6,031 (262)

Experimental analysis and optimization of abrasive waterjet deep hole drilling process parameters for SS AISI 316L

Journal of Materials Research and Technology, 2023
Recent breakthroughs in component downsizing and miniaturization emphasise the requirement for deep-hole drilling with an increased aspect ratio, especially in the automobile sector for fuel injectors and the medical sector for manufacturing bone screws ...
Bharani Chandar J, N. Lenin, Siva Kumar, Naveen Kumar Gupta, Alagar Karthick, Rathina Suriyan, Hitesh Panchal, Abhinav Kumar, Anand Patel, Kishor Kumar Sadasivuni   +9 more
doaj   +3 more sources

Multiobjective Optimization of Cutting Parameters for TA10 Alloy Deep-Hole Drilling. [PDF]

Materials (Basel), 2022
Feng Y, Zheng H, Han X, Liu Z.
europepmc   +2 more sources

Mechanical Properties of a Typical Jurassic Shaximiao Sandstone Under Subzero and Deep in situ Temperature Conditions

Frontiers in Earth Science, 2021
Insight into the difference between the mechanical properties of rocks at low and in situ deep reservoir temperatures is vital for achieving a better understanding of fracking technologies with supercritical CO2 and liquid nitrogen. To address this issue,
R. He, R. He, L. He, B. Guan, C. M. Yuan, J. Xie, L. Ren, L. Ren   +7 more
doaj   +1 more source

Study on straightness deviation control in the BTA deep hole drilling based on thermal-mechanical coupling simulation method

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2021
Nickel-based superalloys also have super high strength at high temperatures, which are typically difficult to be processed. As the material of hydraulic parts, aircraft engines, and downhole intelligent tools, it has the characteristics of large cutting ...
Xiaohua ZHU, Rui ZHANG, Tian LI, Liangliang DONG, Yuan TANG   +4 more
doaj   +1 more source

Deep ice-core drilling to 800 m at Dome A in East Antarctica

Annals of Glaciology, 2021
A deep ice core was drilled at Dome A, Antarctic Plateau, East Antarctica, which started with the installation of a casing in January 2012 and reached 800.8 m in January 2017. To date, a total of 337 successful ice-core drilling runs have been conducted,
Zhengyi Hu, Guitao Shi, Pavel Talalay, Yuansheng Li, Xiaopeng Fan, Chunlei An, Nan Zhang, Chuanjin Li, Ke Liu, Jinhai Yu, Cheng Yang, Bing Li, Bowen Liu, Tianming Ma   +13 more
doaj   +1 more source

Torsional Pendulum Drag Reduction Technology for Directional Drilling of Ultra Deep Hole in Underground Coal Mine

Meikuang Anquan, 2020
Aiming at the problems such as low efficiency and depth limit of directional drilling caused by the support pressure of drilling tools in the directional drilling of ultra-deep hole in underground coal mine, learning from the twist drilling technology ...
JIANG Lei, XU Chao, LI Quanxin, WANG Xian
doaj   +1 more source

Key technology and application of surface life support hole demonstration project in Meihuajing Mine

Meikuang Anquan, 2022
In order to solve the problems of low drilling efficiency and poor target-hitting accuracy of ground life support hole, Meihua Mine was selected as the test site of rapid and accurate drilling technology project, through the analysis of geological ...
KANG Yuguo, ZHANG Biao, ZHANG Ming
doaj   +1 more source

Study on dynamic characteristics of drill string in deep-water riserless drilling

Advances in Mechanical Engineering, 2023
The cost and security of ocean drilling are directly related to the efficient exploration and development of ocean resources. The riserless drilling system is usually adopted in the ocean drilling.
Fangfei Huang, Jin Yang, Bin Li, Lunke Gan, Qizeng Feng   +4 more
doaj   +1 more source

Migration Characteristics of Boring Mud in Roadway Floor Anchor Wire Hole and Test in Coal Mine

Advances in Civil Engineering, 2021
Given the difficulty in drilling the anchor holes in the roadway floor of the coal mine, the characteristics of slag movement in the process of positive and negative circulation drilling are analyzed.
Hui Zhang, Weihai Han, Youlin Xu, Mengzhi Zhu, Zhanyang Liu, Zhenfeng Wang   +5 more
doaj   +1 more source

The Review and Development of Devices with an Increasing Rate of Penetration (ROP) in Deep Formation Drilling Based on Drill String Vibration

Energies, 2022
The oil and gas resources stored in deep strata are an important replacement field of the petroleum industry. Accelerating the exploration and development of deep oil and gas is of great significance to the security of energy strategy.
Yongwang Liu, Yixiang Niu, Zhichuan Guan, Shuquan Lyu   +3 more
doaj   +1 more source