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Mining Publication: Evaluation of Alternative Placement of Longwall Gob Gas Ventholes for Optimum Performance
Keywords: Gases Pennsylvania
Original creation date: January 1994
Authors: WP Diamond, PW Jeran, MA Trevits
Report of Investigations - January 1994
Download PDF Document (1.00 MB)
NIOSHTIC2 Number: 10005159
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9500, 1994 Jan; :1-14
In this U.S. Bureau of Mines study, production trends have been analyzed for 82 gob gas ventholes on 7 longwall panels in the Lower Kittanning Coalbed, Pennsylvania. The variability of gas production from individual holes can be attributed to several factors, including completion practices and problems, the extent of fracture development in the strata above the extracted panel, water production, and location on the panel. Of particular significance is hole location. Holes on the ends of the panels, where overburden strata are in tension because of the support of the surrounding pillars, were generally the highest and longest producers.
Image of publication Evaluation of Alternative Placement of Longwall Gob Gas Ventholes for Optimum PerformanceReport of Investigations - January 1994
Download PDF Document (1.00 MB)
NIOSHTIC2 Number: 10005159
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9500, 1994 Jan; :1-14
See Also
Advances in Grid-Based Numerical Modeling Techniques for Improving Gas Management in Coal Mines
Commercial-Quality Gas From a Multipurpose Borehole Located in the Pittsburgh Coalbed
Gas Sorption and Transport in Coals: A Poroelastic Medium Approach
Geology and Gas Content of Coalbeds in Vicinity of Bureau of Mines, Bruceton, Pa.
Improved Methods for Monitoring Production From Vertical Degasification Wells
The Limiting Oxygen Concentration and Flammability Limits of Gases and Gas Mixtures
Prediction of Longwall Methane Emissions: An Evaluation of the Influence of Mining Practices on Gas Emissions and Methane Control Systems
Reconciling Longwall Gob Gas Reservoirs and Venthole Production Performances Using Multiple Rate Drawdown Well Test Analysis
Reservoir Rock Properties of Coal Measure Strata of the Lower Monongahela Group, Greene County (Southwestern Pennsylvania), from Methane Control and Production Perspectives
A Technique for Measuring Toxic Gases Produced by Blasting Agents
Page last reviewed: November 18, 2015
Page last updated: November 18, 2015
Content source: National Institute for Occupational Safety and Health, Mining Program
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