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- Unlike conventional hydrocarbons that are extracted from permeable rocks easily, Shale gas is trapped in low permeable rocks.
- A 'mixture of pressurized water, chemicals, and sand'(shale fluid) is required to fracture low permeable rocks. Hence the process is heavily water consuming.
- Its extraction in countries like India where freshwater resources are fast depleting will be an environmental disaster unless water-intensive methods are used for fracking.
- Shale rocks are usually located adjacent to the rocks containing usable drinking water known as Aquifiers. So while fracking of Shale rock the methane can penetrate into aquifers and pollute the drinking water.
- On 1 August 2018 GOI approved the policy allowing the private and government players to explore the shale gas reserves in India.