Results 91 to 100 of about 6,533 (232)
Meitan kexue jishuZhijin Block has drilled over 50 wells, conducting research and tests on various well types, commingled horizons, and fracturing methods. The proven geological reserves of coalbed methane (CBM) in the Zhucang Sub-syncline are 113×108 m3, making it one of
Xipeng HE +7 more
doaj +1 more source
Removing methane (degasification) from the Pocahontas No. 4 coalbed in southern West Virginia [PDF]
"Tests were conducted in the Pocahontas No. 4 coalbed in southern West Virginia to determine if successful degasification techniques, developed during an earlier study in the Pittsburgh coalbed, would be effective in removing methane from those usually ...
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Shiyou shiyan dizhiA significant strategic breakthrough has been achieved in the exploration of deep coalbed methane (CBM) in the Upper Permian Longtan Formation in the Nanchuan area, southeastern Sichuan Basin, showing promising exploration potential for CBM in this area.
Xipeng HE +7 more
doaj +1 more source
Removing methane (degasification) from the Pittsburgh coalbed in northern West Virginia [PDF]
"Tests were conducted in the Pocahontas No. 4 coalbed in southern West Virginia to determine if successful degasification techniques, developed during an earlier study in the Pittsburgh coalbed, would be effective in removing methane from those usually ...
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EnergiesInjecting CO2 into coal seams to enhance coal bed methane (ECBM) recovery has been identified as a viable method for increasing methane extraction. This process also has significant potential for sequestering large volumes of CO2, thereby reducing the ...
Xiongwei Sun +8 more
doaj +1 more source
Methane and dust controls for longwalls : Pocahontas no.3 coalbed, Grundy, Virginia [PDF]
"The periphery of longwall panels in the Pocahontas No. 3 Coalbed is characterized by a zone of reduced permeability that inhibits the natural drainage of methane. A residual gas pressure of 105 psig was measured after 1 year in an isolated block of coal
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Measurement: SensorsIn the eastern edge of the Ordos Basin in China, coalbed methane geological resources are very abundant, and efficient extraction of coalbed methane has become an important demand for energy development strategies and coal safety production.
Shuguang Li +3 more
doaj +1 more source
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 ...
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Frontiers in Earth ScienceThe 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 +8 more
doaj +1 more source
The direct method of determining methane content of coalbeds for ventilation design [PDF]
"The applicability of the "direct method" for determining the methane content of virgin coalbeds was tested. Preliminary results indicate that the direct method, when applied to exploration cores, can be successfully used to estimate coalbed gas content ...
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