Item Number: OFS98-07

ANNOTATION: This report summarizes a coal-bed methane study in Daviess County, Indiana. Coal samples were collected from three boreholes in order to determine if the coals of the Brazil and Staunton Formations contain significant coal-bed methane resources. Our study suggests that the gas content in the studied part of Daviess County is primarily a function of the depth. Coals that occur at the depths shalower than 160 ft have a very low gas content likely due to gas migration to the surface. Gas contents of the Staunton and Brazil Formation coals occurring deeper than 160 ft range from 41.6 scf/ton to 102.2 scf/ton. The Lower Block coal has the highest gas-in-place content and has the highest coal-bed resource potential.

Mastalerz, M. , Kvale, E. 1998, Coal-bed gas potential in Daviess County, Indiana: Indiana Geological Survey Open-File Study 98-07, 56 p., 6 fig.

Notes: Publications in the Indiana Geological Survey Open-File series have been inconsistently named using a variety of series titles including "Open-File Report," "Open-File Map," and "Open-File Study." Prior to 1994, a publication in this series was generally referred to as an "Open-File Report" (but not always). To help reduce confusion created by these inconsistencies, the IGS now refers to every publication in the Open-File series as an "Open-File Study." To be entirely correct in writing a bibliographic reference for a publication, one should use the series name and number that appears on the publication itself.

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Keywords: coal, gas, methane, cbm, coalbed methane, Brazil Formation, Staunton Formation, Lower Block Coal Member, Raccoon Creek Group, Pennsylvanian

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