Using a comprehensive data set (dissolved CH4, δ(13)C-CH4, δ(2)H-CH4, δ(13)C-DIC, δ(37)Cl, δ(2)H-H2O, δ(18)O-H2O, Na, K, Ca, Mg, HCO3, Cl, Br, SO4, NO3 and DO), in combination with a novel application of isometric log ratios, this study describes hydrochemical and thermodynamic controls on dissolved CH4 from a coal seam gas reservoir and an alluvial aquifer in the Condamine catchment, eastern S...

Coalbed Methane (CBM) is an unconventional form of natural gas which self-generated and self-stored in coal seams. In order to realize the effective exploitation CBM Zhengzhuang block, microstructure, wettability, permeability, rock mechanics in-situ stress were studied this research. It found that high rank anthracite characterized by vitrinite content low inorganic mineral content, abundant C...

two roadways in adjacent working face of Baode Mine may have the risk water inrush at same time, so it is necessary to construct long borehole cover roadway excavation. On basis hydrogeological conditions mine, safe insulation thickness and coefficient coal seam No .8 are calculated. The results show that 0.035-0.037 MPa/m, which less than critical value 0.06 MPa/m bottom plate has no sudden ha...