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Mining Publication: Removing Methane (Degasification) from the Pocahontas No. 4 Coalbed in Southern West Virginia
Keywords: Boreholes Coal Methane West Virginia
Original creation date: January 1963
Authors: WM Merritts, CR Waine, LP Mokwa, MJ Ackerman
Report of Investigations - January 1963
Download PDF Document (2.34 MB)
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 6326, 1963 Jan; :1-39
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 more gaseous coals. Specially designed long-hole dri1ling equipment and Bureau of Mines continuous recording devices were used to measure the quantity and methane content of the ventilating air during the investigation. Infusions were made with water at normal waterline pressures ranging from 200 to 220 psi or at pump pressures ranging from 400 to 650 psi, Results of the tests showed that methane emissions from free-flow bleeder holes were as much as 131 cfm. Infusions of some of the holes increased the methane emission from other holes and from the exposed coal surfaces near the working areas as much as 1,540 cfm. The methane content in the main return air currents after infusion was reduced more than 86 percent of the amount recorded before tests were made.
Image of publication Removing Methane (Degasification) from the Pocahontas No. 4 Coalbed in Southern West VirginiaReport of Investigations - January 1963
Download PDF Document (2.34 MB)
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 6326, 1963 Jan; :1-39
See Also
Coal Mine Methane: A Review of Capture and Utilization Practices with Benefits to Mining Safety and to Greenhouse Gas Reduction
Comparisons Between Cross-Measure Boreholes and Surface Gob Holes
Low-Temperature Evolution of Hydrocarbon Gases From Coal
Measuring the Gas Content of Coal: A Review
Methane and Dust Control by Water Infusion: Pittsburgh Coalbed (Fairview, W. Va.)
Methane Diffusion Parameters for Sized Coal Particles: A Measuring Apparatus and Some Preliminary Results
Methane Emissions from Gassy Coals in Storage Silos
Reservoir Engineering Considerations for Coal Seam Degasification and Methane Control in Underground Mines
A Review of the Mechanisms of Gas Outbursts in Coal
Rotary Drilling Techniques Used in the Beckley Coalbed
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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