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Mining Publication: Reservoir Rock Properties of Coal Measure Strata of the Lower Monongahela Group, Greene County (Southwestern Pennsylvania), from Methane Control and Production Perspectives
Keywords: Coal mining Gas emissions Methane Methane control Pennsylvania 
 Rock mechanics
Original creation date: March 2009
Authors: C� Karacan
Peer Reviewed Journal Article - March 2009
Download PDF Document (1.86 MB)
NIOSHTIC2 Number: 20035007
Int J Coal Geol 2009 Mar; 78(1):47-64
The methane emission rate into an underground mine environment from overburden strata during longwall mining is impacted by reservoir and geomechanical characteristics of the coal measure rocks in the overlying strata, as well as the presence of any coal seam. The reservoir characteristics and how they change during mining potentially affect the performance of gob gas ventholes, which consequently impacts the efficiency of methane control in the mining environment. This study presents reservoir and elastic properties of coal measure rocks in the Lower Monongahela Group in Greene County, southwestern Pennsylvania, of the Northern Appalachian Basin. Since the source of methane in this region from underground mining is located between the Sewickley coal and the Pittsburgh coal, a specific emphasis was given to this interval. Core analyses were performed in the laboratory to determine rock porosity and permeability. Geophysical logging data (gamma, density, sonic) obtained from two exploration boreholes were used for evaluating formation boundaries, shale contents, log porosities, and geomechanical properties of formations. Permeability was also calculated using density-log data and empirical equations and compared with laboratory measurements and slug tests performed in isolated intervals of boreholes. The results presented in this study can be used as data sources for reservoir studies related to the production and control of methane.
Image of publication Reservoir Rock Properties of Coal Measure Strata of the Lower Monongahela Group, Greene County (Southwestern Pennsylvania), from Methane Control and Production PerspectivesPeer Reviewed Journal Article - March 2009
Download PDF Document (1.86 MB)
NIOSHTIC2 Number: 20035007
Int J Coal Geol 2009 Mar; 78(1):47-64
See Also
Development and Application of Reservoir Models and Artificial Neural Networks for Optimizing Ventilation Air Requirements in Development Mining of Coal Seams
Guidelines for the Control and Monitoring of Methane Gas on Continuous Mining Operations
Influence of Overlying Strata on Methane Emissions in a Northern West Virginia Coal Mine
Managing Excess Gas Emissions Associated with Coal Mine Geologic Features
Methane Content of Gulf Coast Domal Rock Salt
Methane Control by Isolation of a Major Coal Panel - Pittsburgh Coalbed
Methane Emission from U.S. Coal Mines, A Survey
Methane Emission Rate Studies in a Northern West Virginia Mine
Modeling and Prediction of Ventilation Methane Emissions of U.S. Longwall Mines Using Supervised Artificial Neural Networks
Remote Methane Sensors
Page last reviewed: September 20, 2012
Page last updated: September 20, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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