Results 61 to 70 of about 1,623 (179)

Geological control of differential enrichment of deep coalbed methane in the Ordos Basin

Meitan kexue jishu
The deep coalbed methane (CBM) resources in the Ordos Basin are abundant and have great development potential, making it the main battlefield for exploration and development of deep CBM in China.
Liyong FAN, Guoxiao ZHOU, Zhaobiao YANG, Huaichang WANG, Benju LU, Baoxin ZHANG, Yuhang CHEN, Cunlei LI, Yanqing WANG, Junyu GU   +9 more
doaj   +1 more source

Probing the Behaviour of Fluids Confined in Porous Materials by Neutron Scattering: Applications to CO2 Sequestration and Enhanced Oil and Gas Recovery

ChemPlusChem, Volume 89, Issue 12, December 2024.
Understanding the properties of confined fluids is a challenging research area and a key feature for many applications. The review summarises the utility of neutron scattering for the structural investigation of fluids confined in porous materials.
Konstantinos L. Stefanopoulos
wiley   +1 more source

Structural control on productivity of deep coalbed methane wells

Youqicang pingjia yu kaifa, 2021
The southern Yanchuan Block is a deep, high-rank coal-bed methane reservoir with large buried depth at 800~1 500 m, meagre coal or anthracite, and good gas content at 12 m3/t.
LI Xin
doaj  

Damage evolution and fracture characteristics of coal rock impacted by self‐excited pulse water jet under different stress loading conditions

Energy Science &Engineering, Volume 12, Issue 9, Page 3743-3763, September 2024.
Numerical simulation model of SEPWJ impacting coal rock under stress loading conditions (H and W are the length and width of coal rock specimen used in the numerical simulation, respectively; σx and σy are the horizontal and vertical stresses applying on coal rock specimen, respectively; dp and dn are the plunger diameter and nozzle outlet diameter ...
Hongyu Ma, Wen Wan, Dongfang Xu, Pengtao Zhao, Jiaokun Wu, Yong Chen, Yao Wang   +6 more
wiley   +1 more source

The primary controlling factors of the occurrence state of deep high-rank coalbed methane in eastern Ordos Basin

Frontiers in Earth Science
Introduction: This study investigates the key controlling factors of the occurrence state of deep coalbed methane (CBM). CBM is an abundant energy resource in China, particularly in deep coal seams.
Yujiang Shi, Yufei He, Jinbin Wan, Jianmeng Sun, Jingbo Zeng, Ruikang Cui   +5 more
doaj   +1 more source

CONSTRAINING THE MEAN RESIDENCE TIME AND FLOWPATH OF GROUNDWATER THROUGH COAL SEAMS USING NOBLE GASES [PDF]

, 2018
Noble gases, specifically 4He concentrations, can be a useful tool for determining the rates of groundwater recharge, subsurface residence times, and groundwater flowpaths, especially in difficult to model complex formations such as fractured aquifers ...
Darland, Samuel
core  

Effects of microstructure on hydraulic fracturing and gas–water production in coal reservoirs: A case study of the Dahebian coalbed methane block in Western Guizhou, China

Energy Science &Engineering, Volume 12, Issue 7, Page 3110-3125, July 2024.
On the basis of the coalbed methane (CBM) development demonstration project within the well DC1 group situated in the Dahebian block of the Liupanshui Coalfield, Guizhou Province. It leverages three‐dimensional seismic interpretation to analyze the structural features within the well area.
Shiliang Zhu, Xiaozhi Zhou, Fuping Zhao, Jiaxin Wu, Sijie Han, Lingyun Zhao, Peiming Zhou, Jun Wang, Zigang Yang   +8 more
wiley   +1 more source

Occurrence and Potential for Coalbed Methane Extraction in the Depocenter Area of the Upper Silesian Coal Basin (Poland) in the Context of Selected Geological Factors

Energies
Coalbed methane (CBM) is the only unconventional gas in Poland with estimated recoverable resources. The prospects for developing deep CBM have been explored in recent years by drilling deep exploration wells within the depocenter of the Upper Silesian ...
Sławomir Kędzior, Lesław Teper
doaj   +1 more source

Damage characteristics of gas extraction boreholes under different crustal stresses and their effects on gas extraction

Energy Science &Engineering, Volume 12, Issue 6, Page 2591-2615, June 2024.
Dual pore medium model. Abstract To investigate the effects of different crustal stresses on the stability of gas extraction boreholes, several equations were deduced. Additionally, the coupled flow‐solid model of gas extraction was constructed, given the elasticity−plasticity deformation of the coal body.
Yang Guang, Zhao Hongbao
wiley   +1 more source

Selenium and tellurium concentrations of Carboniferous British coals [PDF]

, 2019
The authors wish to thank Kier Group, the British Coal Utilisation Research Association (BCURA) and Uniper (E.On) for kindly providing coal samples.
Armstrong, Joseph, Bullock, Liam A., Feldmann, Joerg, Flores, Erico M. M., Henn, Alessandra S., Mello, Paola A., Mesko, Marcia F., Parnell, John   +7 more
core   +1 more source