News
CoalGAS awarded an ACARP Project
CoalGAS has been awarded an ACARP Project (C28007) to investigate the impact of core sample recovery time on accuracy of gas content measurement It is generally accepted in core sample gas content testing in Australian underground coal mines that a “correction factor” is added to the measured gas content [...]
Coal Seam Gas Drainage
Coal Seam Gas Drainage – Improving performance Gas drainage systems in underground coal mines often fail to deliver the planned / expected gas production rates and subsequently fail to reduce the gas content of the coal seam within the scheduled timeframe. Underperforming and ineffective gas drainage can result in delays [...]
Presenting at the Coal Operators Conference 2018
The 2018 Coal Operators Conference is being held on 7-8 February 2018 in Wollongong. The conference, has been held by the Mining and Engineering Group of the Faculty of Engineering and Information Sciences, University of Wollongong, since 1998. The conference is supported by the Illawarra Branch of The Australasian Institute of Mining and Metallurgy (AusIMM) and the Mine Managers Association of Australia (MMAA).
How to Reduce Gas-Related Production Delays
The process of excavating and mining coal causes fractures in the overlying and underlying strata. The fractures provide pathways for gas released from coal seams and other gas-bearing strata to flow into the mine workings. Coal seam gas typically contains high concentrations of methane with lesser concentrations of carbon dioxide. Low concentrations of other gases such as nitrogen, hydrogen sulphide and ethane may also be present in some coal seams. In certain geological settings, particularly in close proximity to geological structures, such as faults and dykes, the concentration of gases contained in a coal seam can vary significantly between methane-rich to carbon dioxide-rich.