Results 61 to 70 of about 1,418 (251)
Deep Underground Science and Engineering, EarlyView.The flowchart illustrates rock specimen testing, vibration signal acquisition, and feature extraction with Gaborlet and sparse filtering for classification. Abstract Traditional lithology identification methods mainly rely on core sampling and well‐logging data.
Jian Hao +5 more
wiley +1 more source
Geophysical Monograph Series, Page 263-304., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jessica H. Whiteside +3 more
wiley +1 more source
Development of a rapid field testing method for metals in horizontal directional drilling residuals with XRF sensor. [PDF]
Sci Rep, 2021 Zhang H, Antonangelo J, Penn C.
europepmc +1 more source
Deep Underground Science and Engineering, EarlyView.In response to the problem of strong mining pressure manifestation along the goaf roadway in a thick coal seam mining area, this study uses a new type of combined blasting roof cutting technology to effectively control the manifestation and deformation of mining pressure along the goaf roadway.
Xiaoding Xu +6 more
wiley +1 more source
Seismic analysis and design of tunnels within fault ground: A review
Deep Underground Science and Engineering, EarlyView.The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang +6 more
wiley +1 more source
Problems of Directional Drilling in OKD, DPB, a.s. [PDF]
Acta Montanistica Slovaca, 2004 Application of directional drilling in underground coal mines is well known from Australia or USA, this method is used especially for gas drainage and coal seam exploration.
Jankù Miroslav, Kunz Antonín
doaj
Deep Underground Science and Engineering, EarlyView.This study establishes a multi‐factor coupling framework for predicting breakdown pressure in laminated shale by integrating experimental hydraulic fracturing tests, physics‐informed neural networks (PINNs), and Sobol sensitivity analysis. It reveals how differential stress, the bedding dip angle, and the injection rate interact to influence fracture ...
Tao Wang +6 more
wiley +1 more source
DESIGN OF TECHNOLOGY FOR DRILLING DIRECTIONAL AND HORIZONTAL WELLS
Herald of the Kazakh-British technical universityThe design of technology for drilling directional and horizontal wells is an important stage in the development of oil and gas fields, especially in conditions of complex geological structure. This topic involves the study of methods and tools used to create wells with varying angles and directions.
F. Y. Rakhmanov, A. S. Yskak
openaire +1 more source
Deep Underground Science and Engineering, EarlyView.Well XA‐1, completed at a true vertical depth of 11 156 m in the Shawan Sag of the Junggar Basin, is the deepest predominantly near‐vertical well drilled in a sedimentary basin. The figure shows the basin's tectonic framework and well location (a), a structural cross‐section spanning the Shawan Sag and adjacent uplifts (b), and the stratigraphic column
Fangkai Liu +3 more
wiley +1 more source
Torque Transmission Law in Slide Steering for Extra-Deep Directional Wells
Shiyou jixie, 2020 Speed and accuracy regulation at the tool face during conventional slide steering are crucial to improve the drilling efficiency of extra-deep directional/horizontal wells.
Sun Mingguang +3 more
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