Mining Publication: Hydraulic Stimulation Increases Degasification Rate of Coalbeds
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Original creation date: January 1975
Coal degasification boreholes drilled from the surface have been successfully hydraulically stimulated to increase the flow of gas from the coal. This Bureau of Mines report describes the hydraulic stimulation procedure for a coalbed, the equipment required, and design criteria for the treatment. Three examples of stimulation treatment show from fivefold to twentyfold increases in gas production. The tests were conducted in the Pocahontas No. 3 Coalbed, Buchanan County, Virginia, the Pittsburgh coalbed, Washington County, Pennsylvania, and the Mary Lee coalbed, Jefferson County, Alabama. Two sites where the coal was hydraulically stimulated and exposed by subsequent mining show no adverse effect on mining operations through the treated zones. The induced vertical partings were confined to the coalbed and did not in any way affect either roof or floor rock.
Authors: CH Elder, M Deul
Report of Investigations - January 1975
NIOSHTIC2 Number: 10000668
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 8047, 1975 Jan; :1-17
See Also
- A CART Technique to Adjust Production from Longwall Coal Operations under Ventilation Constraints
- Coal Mine Methane: A Review of Capture and Utilization Practices with Benefits to Mining Safety and to Greenhouse Gas Reduction
- Degasification and Production of Natural Gas From an Air Shaft in the Pittsburgh Coalbed
- Effects of Stimulation Treatments on Coalbeds and Surrounding Strata: Evidence from Underground Observations
- Methane Control by Isolation of a Major Coal Panel - Pittsburgh Coalbed
- Rotary Drilling Holes in Coalbeds for Degasification
- Rotary Drilling Techniques Used in the Beckley Coalbed
- Three Coal Mine Gob Degasification Studies Using Surface Boreholes and a Bleeder System
- Two-Phase Flow in Coalbeds
- Use of Vertical Boreholes for Assisting Ventilation of Longwall Gob Areas
- Content source: National Institute for Occupational Safety and Health, Mining Program