Results 31 to 40 of about 442 (134)

Quantitative Identification and Distribution Pattern of Macrolithotype of Coal in Deep Coal Seams of the Daji Block

Energy Science &Engineering, Volume 13, Issue 10, Page 4839-4852, October 2025.
ABSTRACT The construction of a logging response model for macrolithotypes in coal has been successfully completed. This model has enabled delineation of vertical and planar distribution patterns of coal macrolithotypes within the #5 and #8 coal seams of the Daji block, as well as to forecast the distribution of favorable reservoir conditions.
Wei Zhang, Liheng Bian, Mingqing Hu, Peng Wu, Tim A. Moore, Jian Shen   +5 more
wiley   +1 more source

In situ loading of a pore network model for quantitative characterization and visualization of gas seepage in coal rocks

Deep Underground Science and Engineering, Volume 4, Issue 3, Page 437-451, September 2025.
Fine modeling of a three‐dimensional fracture structure under dynamic loading of coal is carried out. The streamline distribution law of pressure and velocity field in the loading process of the coal specimen is analyzed, the absolute permeability of the coal specimen is calculated, and the feasibility of the pore network model algorithm and finite ...
Huazhe Jiao, Xi Chen, Tiegang Zhang, Quilligan Michael, Yixuan Yang, Xiaolin Yang, Tongyi Yang   +6 more
wiley   +1 more source

Experimental Study on Prevention of Coal and Gas Outburst by Hydraulic Fracturing in High Gas Coal Mine in Yangquan Mining Area

Energy Science &Engineering, Volume 13, Issue 7, Page 3631-3643, July 2025.
ABSTRACT To investigate the hydraulic fracturing mechanism of high‐fluid wells in the Yangquan mining area, coal seams from the Xinyuan and Xinjing mines were selected as research subjects. Experiments were conducted using the TCQT‐III low‐permeability coalbed gas‐phase displacement and production enhancement apparatus, along with the FINESORB‐3120 ...
Zhou Zhang, Pengxiang Wang, Wanying Yu, Lifang Zhao, Yunxing Cao, Baoan Xian, Yibing Wang, Fei Zhang   +7 more
wiley   +1 more source

Desorption-diffusion specificity of deep coalbed methane under high-temperature effects: Implications for development

International Journal of Mining Science and Technology
China’s deep coalbed methane (CBM) resources demonstrate immense potential with extensive developmental prospects. However, the coupling relationship between the negative adsorption effect and the positive desorption-promotion effect under high ...
Benju Lu, Zhaobiao Yang, Yuting Hou, Cunlei Li, Jianan Wang, Changqing Liu, Yuhao Yao   +6 more
doaj   +1 more source

Numerical Simulation of Deep Coalbed Methane Development Based on Embedded Discrete Fracture Model: A Triple Medium Flow Approach

Energy Science &Engineering, Volume 13, Issue 6, Page 3045-3062, June 2025.
ABSTRACT China is rich in coalbed methane resources, especially with significant potential for deep coalbed methane development. As shallow coalbed methane resources gradually deplete, the development of deep coalbed methane has become a research focus.
Yongsheng An, Zhongwen Sun, Jin Wang, Xiaoyu Zhang, Yangfeng Sun   +4 more
wiley   +1 more source

Experimental Study on the Mechanical Damage and Permeability Evolution of Coal With Different Moisture Contents Under Supercritical Carbon Dioxide Conditions

Energy Science &Engineering, Volume 13, Issue 5, Page 2375-2388, May 2025.
ABSTRACT Using a self‐developed supercritical carbon dioxide (CO2) soaking system, the damage mechanisms and cracking characteristics of coal due to supercritical CO2 under the coupling of high‐temperature, high‐pressure, water, and the seepage evolution law and failure mode of coal bodies were revealed.
Xiaoqiang Zhang, Kai Wang, Yulong Jiang, Yuedong Liu, Pengqi Qiu, Shiyu Zhang, Tingting Cai, Jian Hou   +7 more
wiley   +1 more source

Evolution law of pulsating seepage and thermal deformation by injecting high‐temperature steam into coal for thermal coalbed methane recovery

Deep Underground Science and Engineering, Volume 4, Issue 1, Page 119-131, March 2025.
A new phenomenon of pulsation of steam permeability is discovered. The permeability of high‐temperature steam in coal shows a periodic pulsation pattern with an increase in the injection time. A two‐phase flow theory of gas–liquid is adopted to elucidate the mechanism of pulsating seepage of steam.
Zhiqiang Li, Junliang Li, Jinsheng Chen, Ali Karrech, Ningchao Zhang, Ju Chang, Kaiqi Jin, Yangyang Yu, Hongbin Wang, Aijie Wang   +9 more
wiley   +1 more source

Research on the Construction of Coal Powder Settling Final Velocity Model for Coalbed Methane Wells in Panhe Block

Energy Science &Engineering, Volume 13, Issue 1, Page 227-239, January 2025.
ABSTRACT In response to the severe problem of coal powder production in the Panhe block coalbed methane wells in the southern Qinshui Basin, the characteristics of coal powder production in the study area were identified through sample testing, indoor experiments, and theoretical calculations.
Zhou Zhang, Wanying Yu, Min Zhou, Pengxiang Wang, Jintao Zhang, Yunxing Cao, Baoan Xian, Yibing Wang, Fei Zhang   +8 more
wiley   +1 more source

Gas Content and Gas Occurrence Mechanism of Deep Coal Seams in the Shenfu-Linxing Block

Energies
The Shenfu-Linxing block in the Ordos Basin holds abundant deep coalbed methane (CBM) resources, which can alleviate gas shortages and aid dual carbon target achievement. Considering isothermal adsorption traits and parameters like vitrinite reflectance,
Litao Ma, Fan Yang, Jianghao Yang, Yi Cui, Wei Wang, Cheng Liu, Bo Zhang, Jiang Yang, Shu Tao   +8 more
doaj   +1 more source

Quantitative Analysis of Gas Occurrence States and Its Controlling Factors in Deep CBM Reservoirs: An Integrated Model With Application in Linxing Block

Geofluids, Volume 2025, Issue 1, 2025.
Deep coalbed methane (CBM) is a crucial resource for ensuring energy security. Despite some successful localized deep CBM developments, the unclear understanding of gas content and gas occurrence state remains a key obstacle to the comprehensive development of deep CBM.
Jian Wu, Songhang Zhang, Weiwei Chao, Tengfei Jia, Wenchun Peng, Zizhen Liu, Shilong Li, Wensong Wang   +7 more
wiley   +1 more source