Although it does burn much cleaner than coal and oil, the process of extraction of shale gas in Pakistan, or anywhere else, is not without risks, particularly risks to the environment. In the United States, there have been many reports of ground water contamination from chemicals used to fracture rocks, as well as high levels of methane in water wells. In the absence of tight regulations and close monitoring, such pollution of ground water could spell disaster for humans and agriculture.
Given Pakistan's heavy dependence on natural gas for energy and as feedstock for industries such as fertilizer, fiber and plastics, it's important to pursue shale gas fields development under reasonably tight environmental regulations to minimize risks to the ground water resources.
Haq's Musings: Pakistan's Vast Shale Gas Deposits