Results 91 to 100 of about 18,349 (264)

Real‐time lithology identification while drilling based on drill cuttings image analysis with ensemble learning

Deep Underground Science and Engineering, EarlyView.
A lithology identification while drilling method was developed, integrating an automated cuttings sampling system, a smart drilling rig, and an ensemble learning model. Underground trials achieved 97.42% accuracy in real‐time identification of cuttings lithology and composition, enhancing hazard management and supporting unmanned drilling technology in
Kun Li, Ting Ren, Ningping Yao, Jon Roberts, Haitao Song, Zhongbei Li, Xueqiu He, Liang Zhao   +7 more
wiley   +1 more source

Progress for carbon dioxide geological storage in West Macedonia: A field and laboratory-based survey. [PDF]

Open Res Eur, 2023
Tyrologou P, Vamvaka A, Koukouzas N, Pedro J, Fleury M, Carneiro J, Ribeiro C, Ghikas D, Mpatsi A, Barradas JP, Faria P, De Mesquita Lobo Veloso F.   +11 more
europepmc   +1 more source

The damage and failure mechanism of prestatically loaded rock during medium‐strain rate cyclic impact loading

Deep Underground Science and Engineering, EarlyView.
Based on experimental results and theoretical analysis, an established rock damage accumulation model that comprehensively considers the preapplied static load, impact peak value, impact frequency, and impact times. Abstract To study the rock damage mechanism under high static loading and superimposed medium strain rate cyclic impact loading, a series ...
Wei Wang, Hanpeng Wang, Zicheng Wang, Xinyuan Xie, Yunhao Wu, Jinhou Zhang, Dekang Sun   +6 more
wiley   +1 more source

Seismic investigations of eight geological structures for potential storage of CO2 in Denmark: an introduction

GEUS Bulletin
In June 2021, a novel Danish national carbon capture and storage strategy was ratified by the Danish Parliament, and this was followed by the initiation of the project ‘CCS2022–2024’, led by the Geological Survey of Denmark and Greenland.
Ulrik Gregersen, Michael B.W. Fyhn, Marie Keiding, Tanni Abramovitz, Morten Bjerager, Henrik Vosgerau, Florian W.H. Smit, Thomas Funck, Anders Mathiesen, Finn Mørk, Niels H. Schovsbo, Henrik I. Petersen, Lars Henrik Nielsen, Karen Dybkjær, Bodil W. Lauridsen, Emma Sheldon, Maiken L. Olsen, Gunver K. Pedersen, Carsten M. Nielsen, Erik S. Rasmussen, Alireza Malehmir, Myrto Papadopoulou, Samuel Zappalá, Magdalena Markovic, Michael Westgate, Jolanta Putnaite, Emmanouil Konstantinidis, Kristina Kucinskaite, Axel Ehrhardt, Egon Nørmark   +29 more
doaj   +1 more source

Semi‐analytical solution for the stability of deep vertical shaft considering time‐dependent rock‐structure interaction

Deep Underground Science and Engineering, EarlyView.
A novel cavity contraction solution and multilayer shaft wall model were developed to analyze deep shaft stability, considering rock viscosity, support structures, and water pressure, with successful validation through a Hulusu Coal Mine case study.
Bin Chen, Pinqiang Mo, Zhao Lu, Lianfei Kuang, Qiang Zhang, Abolfazl Eslami   +5 more
wiley   +1 more source

Monitoring geological storage of CO₂: a new approach. [PDF]

Sci Rep, 2021
Fawad M, Mondol NH.
europepmc   +1 more source

Caving‐enhanced geothermal system overwhelms fracturing‐ and pipe‐enhanced geothermal system in heat extraction

Deep Underground Science and Engineering, EarlyView.
Our study reveals that caving‐enhanced geothermal systems (C‐EGS) with adequately fractured reservoirs achieve optimal heat extraction by minimizing preferential flow paths, while conventional fracturing (F‐EGS) and pipe‐based (P‐EGS) systems suffer accelerated thermal drawdown.
Fangchao Kang, Tianjiao Li, Yingchun Li, Jinlong Men, Chun'an Tang   +4 more
wiley   +1 more source

Criteria for CO2 storage in geological formations [PDF]

Podzemni Radovi, 2018
CO2 storage in geological formations represents today one of the main new technological solutions for CO2 emission mitigation. Carbon capture and storage technology (CCS) includes capture of anthropogenic CO2 from various emitters, its transportation and
Tomić Lola, Karović-Maričić Vesna, Danilović Dušan, Crnogorac Miroslav   +3 more
doaj  

Monitoring geological storage of CO₂ using a new rock physics model. [PDF]

Sci Rep, 2022
Fawad M, Mondol NH.
europepmc   +1 more source

A rock brittleness index based on the postpeak energy release rate and damage surface characteristics for brittle hard rock

Deep Underground Science and Engineering, EarlyView.
This study examines energy evolution in rock rupture via triaxial direct shear tests, exploring the impact of confining pressure and temperature on fracture surface randomness. A novel energy‐based brittleness index is proposed, validated experimentally, and compared with existing methods for reliability and accuracy.
Biao Wang, Zaobao Liu, Jing Xue, Bo Lu, Wei Zeng, Dengke Zhang   +5 more
wiley   +1 more source