Results 91 to 100 of about 218,589 (182)

Degasification of the Mary Lee Coalbed, Brookwood, Ala. [PDF]

"The Bureau of Mines has developed several techniques for draining methane from coalbeds in advance of mining. Drilling long horizontal holes from an underground location is one such technique, which was successfully demonstrated in the Pittsburgh and ...

core  

The Optimization of Well Spacing in a Coalbed Methane Reservoir [PDF]

, 2010
Numerical reservoir simulation has been used to describe mechanism of methane gas desorption process, diffusion process, and fluid flow in a coalbed methane reservoir.
Sinurat, Pahala Dominicus
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Pressure monitoring and observed effects of mining at the Oak Grove, AL, coalbed degasification pattern [PDF]

"The U.S. Bureau of Mines and the United States steel corporation evaluated the progress of methane drainage at the Oak Grove, Alabama, degasification pattern. Coalbed pressures were monitored between December 1981 and November 1985. Formation pressures,

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Research on coalbed methane extraction technology based on in-situ microwave heating

Meitan kexue jishu
Microwave heating, as a fast and controllable heating method, can quickly increase the temperature and permeability of coal seams, and thus enhance the recovery rate of coalbed methane.
Feng WANG, Chuangye WANG, Meng LIU, Xiaogai TAN, Ersi GAO, Tengze GE, Danlu LIU, Xiaohu XU   +7 more
doaj   +1 more source

Development mechanism and practical significance of deep coalbed methane (coal rock gas) infiltration and displacement

Meitan xuebao
A pilot test on the horizontal well JS6-7P01 in the eastern margin of Ordos Basin achieved a significant breakthrough in the first large-scale hydraulic fracturing of deep coalbed methane (CBM, or coal-measure gas), promoting nationwide exploration and ...
Lihong ZHOU, Xia YAN, Hongtao LIU, Xianyue XIONG, Feng WANG, Shuguang LI, Jiyuan ZHANG, Chuanqing LIU, Xiong HU, Pu YUAN, Qianli MA, Xueguang ZHU   +11 more
doaj   +1 more source

Evaluation of development effectiveness of deep coalbed methane based on flowback characteristics-a case study of the Daning-Jixian block

Frontiers in Earth Science
The efficient development of deep coal-rock gas resources, exemplified by the pioneering No. 8 coal seam (buried >2000 m) in the Daning-Jixian Block, Ordos Basin, is of strategic importance.
Wei Sun, Wei Sun, Yanqing Feng, Yanqing Feng, Yuan Wang, Yuan Wang, Xiaofeng Chen, Quan Zhang, Junpeng Zou   +8 more
doaj   +1 more source

Comparative metagenomics of coalbed methane microbial communities reveals biogenic methane potential in the Appalachian Basin

, 2018
Natural gas is a major source of global energy, and a large fraction is generated in subsurface coalbed deposits. Microbial communities within coalbed deposits impact methane production, and as a result contribute to global carbon cycling. The process of
Kelvin B. Gregory, Daniel E. Ross, Daniel Lipus, Djuna Gulliver   +3 more
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History and development direction of iterative upgrading of deep coalbed methane reservoir reconstruction technology：Taking the Daji Block in the eastern margin of the Ordos Basin as an example

Meitan kexue jishu
In 2019, PetroChina’s Coalbed Methane (CBM) Company achieved a groundbreaking breakthrough in the profitable development of deep coalbed methane reservoirs.
Fengyin XU, Huaibin ZHEN, Shuguang LI, Feng WANG, Lei ZHANG, Yubin WANG, Weichu YU, Weiping ZHU, Borui XU, Yun YANG, Haifeng ZHAO, Kunsen BAI   +11 more
doaj   +1 more source

Optimization Design Method and Application of Nitrogen Horizontal Well Drilling Technology in Coalbed Methane Reservoirs

Energy Science & Engineering
Due to characteristics such as low permeability, low pressure, low gas saturation, low water content, and high structural stress, Yuwang coalbed methane (CBM) is prone to issues such as well leakage, coal sensitivity to water, and coal fines blockage ...
Hu Jiachen, Tan Zhanglong, Yang Fan, Hao Zhaobing, Yang Qi, Feng Lei, Wang Peng   +6 more
doaj   +1 more source

Primary geological characteristics, advances in exploration and production, and strategies of coalbed methane in South China

Meitian dizhi yu kantan
Objective and Methods South China contains abundant coalbed methane (CBM) resources from numerous, superimposed, thin coal seams, serving as a significant replacement for China’s CBM exploration and production in the future.
Tao GUO, Yatong ZHOU, Xiaobo JIN, Xiaokang GAO, Xingping PENG   +4 more
doaj   +1 more source