Results 31 to 40 of about 25,625 (255)

Coalfield structure and structural controls on coal in China

International Journal of Coal Science & Technology, 2020
The occurrence of coal-bearing strata in a variety of coal-bearing basins of China is characterized by late tectonic deformation and remarkable spatial and geochronologic differences.
Daiyong Cao, Anmin Wang, Shuzheng Ning, Huantong Li, Aijun Guo, Limin Chen, Kang Liu, Jieqing Tan, Zhihong Zheng   +8 more
doaj   +1 more source

Tectonic control law and zoning division of coal seam gas occurrence in Sichuan Province

Energy Exploration & Exploitation, 2023
Understanding the coal seam gas occurrence law is the premise and foundation of gas disaster prevention and production planning. The tectonic control law and zoning division of gas occurrence in Sichuan Province have been discussed, based on the gradual ...
Tianrang Jia, Jianlong Xiong, Jiangwei Yan   +2 more
doaj   +1 more source

Neogene stratigraphic architecture and tectonic evolution of Wanganui, King Country, and eastern Taranaki Basins, New Zealand [PDF]

, 2004
Analysis of the stratigraphic architecture of the fills of Wanganui, King Country, and eastern Taranaki Basins reveals the occurrence of five 2nd order Late Paleocene and Neogene sequences of tectonic origin.
Bland, Kyle J., Cartwright, Stuart J., Hansen, Rochelle J., Hayton, Shaun, Hendy, Austin J.W., Kamp, Peter J.J., McIntyre, Avon P., Nelson, Campbell S., Ngatai, Melodie, Vonk, Adam J.   +9 more
core   +2 more sources

Effects of Borehole Arrangement on Methane Migration and Implications for High Efficiency Extraction in Intact and Tectonic Combined Coal Seams

Geofluids, 2022
Gas extraction by bedding boreholes is a key means to realize safe mining of coal mine and protect the environment. The traditional bedding boreholes are usually constructed in the center of the coal seam, which may not obtain a high methane extraction ...
Chenxu Chang, Jun Dong, Wenqiang Ju
doaj   +1 more source

Coalbed Methane Reservoir Parameter Prediction and Sweet-Spot Comprehensive Evaluation Based on 3D Seismic Exploration: A Case Study in Western Guizhou Province, China

Energies, 2022
As a kind of clean energy, the exploration and development of coalbed methane (CBM) are of great importance and significance. In this paper, the CBM reservoir parameters of a working area in Western Guizhou Province, China, were predicted by using 3D ...
Yuanlong Wei, Lingyun Zhao, Wei Liu, Xiong Zhang, Zhijun Guo, Zhangli Wu, Shenghui Yuan   +6 more
doaj   +1 more source

Laboratory Study on Changes in the Pore Structures and Gas Desorption Properties of Intact and Tectonic Coals after Supercritical CO₂ Treatment: Implications for Coalbed Methane Recovery

Energies, 2018
Tectonic coals in coal seams may affect the process of enhanced coalbed methane recovery with CO2 sequestration (CO2-ECBM). The main objective of this study was to investigate the differences between supercritical CO2 (ScCO2) and intact and tectonic ...
Erlei Su, Yunpei Liang, Lei Li, Quanle Zou, Fanfan Niu   +4 more
doaj   +1 more source

An Experimental Study on Preparation of Reconstituted Tectonic Coal Samples: Optimization of Preparation Conditions

Energies, 2021
The uniquely soft and fragile nature of tectonic coal makes it difficult to obtain core samples suitable for laboratory experimentation. Preparation of reconstituted tectonic coal (RTC) samples generally adopts the secondary forming method. Reliable coal
Jishi Geng, Liwen Cao, Congyu Zhong, Shuai Zhang   +3 more
doaj   +1 more source

Complex examination of the Upper Paleozoic siliciclastic rocks from southern Transdanubia, SW Hungary—Mineralogical, petrographic, and geochemical study [PDF]

, 2007
A vertical section of Upper Paleozoic sandstones from southern Transdanubia (Mecsek-Villány area, Tisza mega-unit, Hungary) has been analyzed for major and trace elements, including rare earth elements (REEs).
Á, Arribas, Awdankiewicz, Balogh, Bauluz, Bhatia, Bhatia, Biscaye, Brü, Cox, Csontos, Csontos, Csontos, Cullers, Cullers, Fazekas, Fedo, Gaillardet, Garver, Golonka, Haas, Huang, Kü, Lee, Nagy, Nesbitt, Noda, Pearce, Preston, Varga, Varga, Varga, Varga, Watanabe, Willan, Zimmermann   +35 more
core   +1 more source

Analysis of outburst instability tendency of coal containing methane based on energy theory

Meikuang Anquan, 2022
In order to analyze the influence of unsteady diffusion characteristics of tectonic coal on energy instability, the steady and unsteady gas diffusion models were used to establish the functional relationship between the initial gas diffusion coefficient ...
LU Shouqing, LI Mingjie, SI Shufang, SA Zhanyou, LIU Jie, WANG Chengfeng, BEI Taibiao, SHI Jiang   +7 more
doaj   +1 more source

Permeability Variation of Tectonic Coal under Microwave Radiation

Taiyuan Ligong Daxue xuebao, 2022
On a microwave radiation triaxial loading experimental system with independent intellectual property rights, seepage experiments of coal samples were condected under the action of different microwave radiation power, radiation time, and effective force, the key factors affecting the permeability of coal samples were analysed, and the actual structural ...
Yongli ZHANG, Yuying TU, Yubin DONG, Yulin MA   +3 more
openaire   +1 more source