Provides comprehensive information about the key exploration, development and optimization concepts required for gas shale reservoirs * Includes statistics about gas shale resources and countries that have shale gas potential * Addresses the challenges that oil and gas industries may confront for gas shale reservoir exploration and development * Introduces petrophysical analysis, rock physics, geomechanics and passive seismic methods for gas shale plays * Details shale gas environmental issues and challenges, economic consideration for gas shale reservoirs * Includes case studies of major producing gas shale formations