Shale Gas: An Undepletable Energy Resource

World Energy market is growing day by day in abundance as much as 50 % growth by 2050 as compared to 2010. But the resources are continuously depleting and lowering the energy content. Thus renewable energy resources are not feasible and capable enough to fulfill the increasing demands. Increase in production of nonrenewable energy source, i.e., the fossil fuels may help to fulfill the energy requirement of future generations. Shale gas is one of the optional unconventional sources of energy. Shale gas deposits are scattered all over the planet in low-permeability and low porosity reservoirs. India has overall reserves of shale gas between 600 and 2000 TCF, of which 63 TCF is of recoverable shale gas. Shale exploration techniques are discussed. Light is provided on shale oil and gas global and national data. Challenges faced practically are described.