Characterization of Indiana coals for potential underground coal gasification, including subsidence risk and hydrology (2013)
Abstract: This study is a compilation of the available data on coal properties, hydrology, and lithologic characteristics in nine areas selected as the most promising for underground coal gasification in southwest Indiana. This report includes tables of coal properties important to underground coal gasification and summaries of individual parameters for the Springfield Coal and the Seelyville Coal, as well as maps of the distributions of selected coal properties. This study indicates that, while much information exists about some of the properties of coal (for example, heating value or ash content), more data are needed on the swelling characteristics of coal, the presence and thickness of clastic partings, and the coal’s geomechanical properties to adequately evaluate the potential for underground coal gasification. Newly obtained analyses of geomechanical properties provide valuable data, but more detailed observations and interpretations of the mechanical behavior of the rock column are necessary to better serve numerical simulations of the gasification process. Indiana Geological Survey Report of Progress 45 is published as a digital PDF on a flash drive.
Mastalerz, M., Drobniak, A., Parke, M., and Rupp, J. A., 2013, Characterization of Indiana coals for potential underground coal gasification, including subsidence risk and hydrology: Indiana Geological Survey Report of Progress 45, 37 p.
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