Results 81 to 90 of about 1,933 (209)

New research progress on the ultrastructure of tectonically deformed coals

Progress in Natural Science, 2009
Abstract The structure of tectonically deformed coals shows some characteristics and regulations on the ultra-scale when influenced by different factors such as temperature, pressure and directional stress. Deformations of the macromolecular structure may induce changes in the nano-scale pore structure, which are very important for gas adsorption and
Ju, Yiwen, Li, Xiaoshi
openaire   +1 more source

Combination of CO 2 ${\text{CO}}_{2}$ storage and geothermal energy production in porous and fractured superhot geothermal systems

Deep Underground Science and Engineering, EarlyView.
The graphical abstract depicts the workflow for porous‐ and fractured‐media simulations, where stochastically generated discrete natural fractures are required for the fracture‐media simulation. Abstract CO 2 ${\text{CO}}_{2}$ leakage is one of the main risks and barriers to geologic carbon storage. However, under the high‐temperature and high‐pressure
Christoph Scherounigg, Rotman Criollo, Victor Vilarrasa, Keita Yoshioka   +3 more
wiley   +1 more source

Multi‐factor coupling effects in hydraulic fracturing of laminated shale: Experimental insights and physics‐informed neural network‐driven optimization

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, Guoyao Xu, Liyuan Liu, Yao Zhang, Sitao Zhu, Hongyang Chu, Kaikai Zhao   +6 more
wiley   +1 more source

Discussion on Reservoir Characteristics and Hydraulic Fracturing Transformation Mechanism of Tectonic Coal

Energies
To investigate the mechanisms of coal seam reservoir modification and the efficient development of surface coalbed methane (CBM), the coal with different structural formations in the 13-1 coal seam of Huainan Mining Area was selected as the research ...
Wenping Jiang, Siqing Sun
doaj   +1 more source

Genesis of peruvian coal in the global tectonic framework

Revista del Instituto de Investigación de la Facultad de Ingeniería Geológica, Minera, Metalúrgica y Geográfica, 2007
Los depósitos de carbón en el Perú se han formado a lo largo del borde continental en tres periodos cortos cruciales para la historia geológica del país, Su génesis es un claro indicador para el clima, geomorfología y latitud geográfi ca local e indirectamente para la deriva continental, tectónica regional y variaciones eustáticas del nivel del mar ...
Dunin-Borkowski, Estanislao, Jacay Huarache, Javier, Sánchez-Izquierdo, José   +2 more
openaire   +1 more source

Integrated numerical simulation and source‐sink matching methodology for Basin‐Wide CO2 storage assessment in depleted reservoirs: A Cambay Basin case study

Deep Underground Science and Engineering, EarlyView.
This study presents an integrated workflow to evaluate secure and large‐scale CO2 storage in depleted oil reservoirs of the Cambay Basin, India. Industrial CO2 sources are systematically matched with mature oil fields using a quantitative source–sink framework to minimize transport distance and cost.
Bhaskarjyoti Khanikar
wiley   +1 more source

Tectonic control law and zoning division of coalmine gas occurrence in Shanxi Province

Energy Exploration & Exploitation
The frequent occurrence of gas disasters in coal mines is primarily attributed to an unclear understanding of gas occurrence laws. Tectonic control law of coalmine gas occurrence in Shanxi Province was analyzed by utilizing massive gas-geology data of ...
Zhigang Song, Degang Shi, Caifang Wu, Tianrang Jia, Xiaolei Liu, Jiangwei Yan, Weiwei Li, Munan Wu   +7 more
doaj   +1 more source

Research on energy instability of composite coal based on unsteady diffusion to cause disaster

Meitan kexue jishu
In China, due to the influence of geological tectonics, the phenomenon of primary structural coal and tectonic coal stratification exists in many coal seams.
Yujin QIN, Weiwei SU, Shouqing LU, Mingjie LI   +3 more
doaj   +1 more source

Structural Characteristics and Physical Properties of Tectonically Deformed Coals

Journal of Geological Research, 2012
Different mechanisms of deformation could make different influence on inner structure and physical properties of tectonically deformed coal (TDC) reservoirs. This paper discusses the relationship between macromolecular structure and physical properties of the Huaibei-Huainan coal mine areas in southern North China. The macromolecular structure and pore
Yiwen Ju, Zhifeng Yan, Xiaoshi Li, Quanlin Hou, Wenjing Zhang, Lizhi Fang, Liye Yu, Mingming Wei   +7 more
openaire   +1 more source

Mechanism of “seesaw‐type” rock burst in coal seam mining beneath mountainous areas

Deep Underground Science and Engineering, EarlyView.
This study reveals the mechanism of “seesaw‐type” rock bursts during coal mining beneath mountainous areas. The advancing working face induces nonuniform fracturing of the overburden. The detached mountain mass then undergoes a seesaw‐type rotational movement around a shifting pivot, driving the primary fracture through a characteristic “open‐close ...
Chao Zhou, Xueqiu He, Zhenlei Li, Ping Wang, Dazhao Song, Fuxing Jiang, Shan Yin, Anliang Lü, Menghan Wei, Taoping Zhong   +9 more
wiley   +1 more source