Results 111 to 120 of about 588,838 (198)

Drainage of Methane From the Overlying Pocahontas No. 4 Coalbed From Workings in the Pocahontas No. 3 Coalbed [PDF]

The Bureau of Mines conducted an experimental degasification project in Island Creek Coal Company Virginia Pocahontas No. 5 Mine. Methane from the overlying Pocahontas No. 4 Coalbed was entering mine workings in the Pocahontas No. 3 Coalbed through frac..

core  

In Situ Gas Content Prediction of Deep Coal Seams Based on Logging in the Central Linxing-Shenfu Block. [PDF]

ACS Omega
Che Y, Zou G, Peng S, She J, Wang X, Zeng H, Ren K.   +6 more
europepmc   +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 ...

core  

A Comprehensive Semi-Analytical Model for Predicting Gas-Water Two-Phase Productivity of Fractured Horizontal Wells in Deep Coalbed Methane Reservoirs. [PDF]

ACS Omega
Jia P, Dong H, Zhang G, Peng C, Niu L.
europepmc   +1 more source

The composition of coalbed gas [PDF]

"Samples of gas were obtained directly from the coalbed during drilling of horizontal and vertical boreholes in six different formations. The samples were analyzed by gas chromatography for C1 to C5 hydrocarbons and for 02, N2, H2, He, and CO2.

core  

Pilot tests of continuous gas extraction with improved L-shaped wells from mining and goaf areas. [PDF]

Sci Rep
Zhang J, Qin Y, Li G, Ma H, Li G, Li G, Liu T, Li J, Ji C, Guo M.   +9 more
europepmc   +1 more source

Application validation and high-yield mechanism analysis of the desorption superposition effect method in Fukang block 8 based on well FS-24. [PDF]

Sci Rep
Wenjie L, Fengnian W, Chenglong Q, Nan Z, Xiaofei S, Hangyu S.   +5 more
europepmc   +1 more source

Methane emissions from an advancing coal mine section in the Pittsburgh coalbed [PDF]

"The methane emissions from an advancing coal mine section were continuously monitored for 120 days. During this time, the section advanced 2,000 feet into virgin Pittsburgh coalbed producing 54,565 tons of coal with a total methane emission of 91 ...

core  

Field-Scale Modeling of Deep Coalbed Methane Productivity of the No. 8 Coal Seam in the Ordos Basin. [PDF]

ACS Omega
Guo Y, Wang G, Sun J, Feng N, Deng Y, Qian A, Li Z, Lei X, Li Y, Chen F.   +9 more
europepmc   +1 more source

Hydraulic-Mechanical-Damage Multifield Coupling Control Mechanism and Gas Production Prediction of Fracturing in Tectonically Deformed Coal Seam. [PDF]

ACS Omega
Yan Z, Xie H, Sang S, Zhou X, Liu S, Han S, Huang F, Wang W, Chen J, Jiang B.   +9 more
europepmc   +1 more source