Coal Properties and Coalbed Methane Potential in the Southern Part of the Upper Silesian Coal Basin, Poland

The area studied covers unmined Pennsylvanian Ćwiklice and Dankowice coal deposits located in the southern part of Upper Silesian Coal Basin, Poland. geological structure clearly affects current distribution methane. content methane is lower seams lying within porous permeable sandstones (Łaziska sandstones), whereas it higher that occur sequences (Mudstone Series) where impermeable shales mudstones occur. Due to previous attempts extract from boreholes, this area, characterized by a dense network exploratory prospecting drillings, worth analyzing with regard conditions occurrence terms extraction possibilities. Using contour maps, cross-sections profiles, variability resources, as well moisture ash seams, were analyzed. Methane isolines are parallel boundary between Cracow Sandstone Series Mudstone main faults. contents reduce contents. A high >8 m3/t coaldaf typical for which do not exceed 5%. High- medium-volatile bituminous low saturation, though saturation increases depth. permeability variable (from 0.2 more than 100 mD), but, below depth 1200 m, clear trend decreasing evident. From point view coalbed (CBM) recovery, relatively permeabilities levels could make CBM output problematic area. production will be probable result demethanation 1 deposit, mining planned. This emission into atmosphere ventilation shafts drainage stations. Therefore, effective use gas captured station highly desirable environmental economic reasons.