Results 71 to 80 of about 16,144,632 (222)

Methane emission rate study in a deep Pocahontas No. 3 coalbed mine in conjunction with drilling degasification holes in the coalbed [PDF]

open access: yes
"A degasification experiment was conducted in a Pocahontas No. 3 Coalbed mine in Virginia. It involved (1) drilling holes in the coalbed in the outside headings of a set of five being developed in virgin area and (2) conducting a methane emission rate ...

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COALBED METHANE COMPREHENSIVE CHARACTERIZATION AND MODELING – BIG GEORGE COAL, POWDER RIVER BASIN, WYOMING [PDF]

open access: yes, 2019
Over the past two decades, coalbed methane (CBM) has become one of the major unconventional gas resources in the US, Canada, Australia, and other countries.
Mohamed, Tarek
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Prediction method of coalbed methane enrichment area based on multi parameter fusion

open access: yesMeitan kexue jishu
Coalbed methane (CBM) is a kind of gas reservoir which mainly exists in coal reservoirs in adsorption state. The prediction of coalbed methane enrichment area by seismic exploration is an important method to reduce the exploration risk and improve the ...
Tao WANG   +4 more
doaj   +1 more source

PRELIMINARY RESULTS OF THE COALBED METHANE EXPLORATION IN THE CZECH REPUBLIC [PDF]

open access: yesActa Montanistica Slovaca, 1997
According to the preliminary estimates, there are hitherto unused resources of coalbed methane in the Czech Republic and real possibilities of their exploitation exist.
Němec Jaroslav, Ďurica Dušan
doaj  

Legal Considerations in the Development of Coalbed Methane [PDF]

open access: yes, 2001
This article is premised on the fact that the development of coalbed methane has only recently become commercially viable. The author defines coalbed methane and then considers various legal definition issues pertaining to its development.
Laffin, Michael J., Michael J. Laffin
core   +1 more source

Numerical Simulation and Experimental Analysis of Dynamic Continuous Operation of Low-Concentration Coalbed-Methane-Mixing Device

open access: yes, 2022
The concentration of low-concentration coalbed methane extracted from underground coal mine fluctuates greatly, which does not meet the requirements of intake concentration of coalbed-methane utilization devices.
Lu Xiao
core   +1 more source

Multi-phase coalbed methane content model in deep strata of eastern margin of Ordos Basin

open access: yesMeitan kexue jishu
The deep coalbed methane resources in the Ordos Basin are abundant. Accurately understanding the laws and underlying mechanisms of coalbed methane content phase change is of great significance for achieving large-scale and efficient development of deep ...
Sandong ZHOU   +7 more
doaj   +1 more source

Guidelines for the prediction and control of methane emissions on longwalls [PDF]

open access: yes
"Although longwall mining productivity can far exceed that of room-and-pillar mining, the total methane emissions per extracted volume associated with longwall sections are generally higher than those for continuous miner or pillar removal sections ...

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Occurrence phase and gas-bearing evolution of deep coalbed methane

open access: yesMeitan kexue jishu
Deep coalbed methane has achieved a significant breakthrough in daily production of a single well and large-scale commercial development, demonstrating the enormous resource potential.
Shuheng TANG   +6 more
doaj   +1 more source

Methane emission from U.S. coal mines in 1975 : a survey : a supplement to Information circulars 8558 and 8659 [PDF]

open access: yes
This Bureau of Mines report tabulates methane emissions from U.S. bituminous coal mines with daily emission rates of at least 100,000 cfd according to States, counties, and coalbeds.

core  

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