Hydraulic fracturing

Hydraulic fracturing is a broad prospect for oil and gas well stimulation,  maide hydraulic fracturing method is the main form of exploitation of natural gas, requiring the incorporation of chemical substances with plenty of water poured into the hydraulically fracture shale to release natural gas. The technology in 10 years in the United States to promote a wide range, but the Americans are worried that the technology will pollute the water, thus threatening the local ecological environment and the health of residents. And that the technology to bring great harm to the environment, including water so spontaneous combustion, causing a small earthquake. Opponents point out the potential environmental impacts, including contamination of groundwater, freshwater depletion, air quality risks, gases and hydraulic fracturing chemicals to migrate to the surface, the surface leakage and backflow contamination, as well as the impact of these issues on health