Results 261 to 270 of about 1,123,828 (350)

Research on the failure law and actual measurement of floor in extremely close distance thick coal seam mining. [PDF]

Sci Rep
Deng Y, Pan W, Ma C, Liu S, Zhao Z, Deng C, Li M.   +6 more
europepmc   +1 more source

Formation damage assessment in carbonate reservoirs after removing hematite-water-based filter cake using HCl. [PDF]

Sci Rep
Shokry A, Elkatatny S, Bageri B.
europepmc   +1 more source

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Evaluating the Anisotropy of Drilling Mechanical Characteristics of Rock in the Process of Digital Drilling

Rock Mechanics and Rock Engineering, 2023
He Mingming, Chun-chi, Ning Li
exaly   +2 more sources

Experimental study on identification of layered rock mass interface along the borehole while drilling

Bulletin of Engineering Geology and the Environment, 2022
Z. Yue, Xiaolei Yue, X. Wang, Yang Li, W. Li, Shiqing Dai, Li-Hua Gan   +6 more
exaly   +2 more sources

Real-time rock strength determination based on rock drillability index and drilling specific energy: an experimental study

Bulletin of Engineering Geology and the Environment, 2021
Kai Zhang
exaly   +2 more sources

Review of theoretical, experimental, and numerical studies on rotary percussive rock drilling

International Journal of Mining, Reclamation and Environment, 2023
Rotary percussion rock drills have been widely used in mining and civil engineering fields, and their performance needs to be further improved. To deeply understand the mechanisms of the rock drills, this article reviews the previous studies from ...
K. Hashiba, K. Fukui
semanticscholar   +1 more source

A novel bionic jellyfish robot for seabed rock drilling and sampling exploration

Other Conferences, 2021
Sampling of seabed rock is an important technical measure for deep-sea resource exploration. Combining underwater bionic technology with ultrasonic drilling technology, a novel robot for submarine rock drilling and sampling is proposed in this paper. The
He Li, Wei Sun, Yijing Shen, Yuanbo Li, Q. Zeng   +4 more
semanticscholar   +1 more source

Study of the effect of drill bits hardness, drilling machine operating parameters and rock mechanical parameters on noise level in hard rock drilling process

, 2021
Rock drilling systems have extensive use in many industries including mining, construction, and oil and water extraction. The process of drilling inevitably creates some noise at the drill-rock collision surface.
Mostafa Piri, R. Mikaeil, H. Hashemolhosseini, A. Baghbanan, M. Ataei   +4 more
semanticscholar   +1 more source

Theoretical and Experimental Studies of Impact Energy and Rock-Drilling Efficiency in Vibro-Impact Drilling

, 2021
Vibro-impact drilling has been proven to be a viable technique for enhancing the rate of penetration (ROP) in deep and ultra-deep well drilling. It is essential to study the effects of impact parameters on impact energy and rock-drilling efficiency for
Quanbin Cao, Huaizhong Shi, Weiqiang Xu, Chao Xiong, Zhaoliang Yang, Ran Ji   +5 more
semanticscholar   +1 more source

Frequency analysis of multi-sources acoustic emission from high-velocity waterjet rock drilling and its indicator to drilling efficiency

International Journal of Rock Mechanics And Mining Sciences, 2019
Acoustic emission has been recognized as a potentially advanced technique to monitor the efficiency of high-velocity waterjet rock drilling. Identification of AE multi-sources signals becomes fundamental to correlate AE singles and rock drilling ...
M. Sheng, S. Tian, Bo Zhang, H. Ge
semanticscholar   +1 more source