Results 71 to 80 of about 246,283 (173)

Research on Lifting and Supporting Technologies of Diaphragm Pump in CBM L-type Well

Shiyou jixie, 2022
In view of the status that diaphragm pump has not been tested in coalbed methane field at home and abroad, the research on diaphragm pump lifting and supporting technology of CBM well was conducted, the design of surface lifting technology was analyzed ...
Qin Shaofeng, Cao Aijuan, Fu Xin, Gu Gentang, Tan Zhanglong   +4 more
doaj  

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

Geological factors affecting methane in the Beckley coalbed [PDF]

"This Bureau of Mines study reviews the geological factors that affect methane in the Beckley coalbed in southern West Virginia, including overburden, coalbed structure, type of and changes in lithology above and below the Beckley coalbed, and presence ...

core  

Productivity characteristics and main controlling factors of coalbed methane wells in Gujiao Block

Meikuang Anquan
Coalbed methane (CBM) resources are abundant in Gujiao Block at the central part of Xishan Coalfield, where the production capacity of the regional single well varies greatly due to multiple factors, and the large-scale development of CBM faces severe ...
Zhiyu DENG, Guosen GAO, Taotao YAN, You ZHOU, Yuxin LIU, Yu TAO   +5 more
doaj   +1 more source

Study on the Influence of Complicated Geological Condition Permeability in Coal Reservoirs on Horizontal Well Drainage and Production

Energy Science &Engineering, Volume 13, Issue 3, Page 1414-1424, March 2025.
The mathematical model of double porosity and double permeability of gas and water two‐phase, matrix system, and fracture system in coal reservoir and the complex geological model of Liujia District are established, and the influence of coal reservoir permeability on horizontal well drainage is analyzed.
Bing Qin, Qifu Wei, Wenjing Duan, Zhanshan Shi, Jianfeng Hao, Bing Liang, Weiji Sun   +6 more
wiley   +1 more source

Mathematical Modeling and Simulation on the Stimulation Interactions in Coalbed Methane Thermal Recovery

, 2019
Heat stimulation of coalbed methane (CBM) reservoirs has remarkable promotion to gas desorption that enhances gas recovery. However, coalbed deformation, methane delivery and heat transport interplay each other during the stimulation process.
Pengfei Chen, Teng Teng, Xiang He, Yingheng Wang   +3 more
core   +1 more source

Challenges and development direction of deep fragmented soft coalbed methane in China

Earth Energy Science
Developing deep fragmented soft coalbed methane (CBM) can significantly enhance domestic natural gas supplies, reduce reliance on imported energy, and bolster national energy security.
Yiyu Lu, Guilin Zhao, Zhaolong Ge, Yunzhong Jia, Jiren Tang, Tianyi Gong, Shan Huang, Zhongtan Li, Wenyu Fu, Jianyu Mi   +9 more
doaj   +1 more source

Ecological Marks for Coalbed Methane Gas (CBM) Reservoir at Damodar River Basin

, 2017
Coalbed methane is formed by geological or biological process in coal seams, which offers significant environmental benefits over other fossil fuel. Ecosystem/biological study is more susceptible to exploration for CBM/Natural gases reservoir but there ...
Selvi, V.A., Masto, R.E.
core   +1 more source

Sensitivity analysis of modeling parameters that affect the dual peaking behaviour in coalbed methane reservoirs [PDF]

, 2006
Coalbed methane reservoir (CBM) performance is controlled by a complex set of reservoir, geologic, completion and operational parameters and the inter-relationships between those parameters.
Okeke, Amarachukwu Ngozi
core   +2 more sources