Mudstones as methane sources: gas production from coal seam interburden (2015–2017)
Carbonaceous mudstones associated with coal measures already exploited for gas present an attractive but
used reservoir of methane. This project seeks to provide methods for accessing this gas. Mudstone
associated with coal seam gas developments are very extensive and gas quantities may exceed even that in
the coal itself. Further infrastructure and access permits are already in place for coal seam gas recovery.
Unlike shale, which is fissile, mudstone is much softer, more malleable and plastic, and consequently will
respond abnormally to hydraulic fracturing and propping, so new methods, to be developed in this project are
needed for stimulation.