Hydraulic fracturing recipe for disaster ?

"Now all the fractured gas reservoirs are water power , but I'm here to make an appeal , do not water fracturing , although that can save costs, but will bring endless troubles ." Professor, China University of Petroleum , China Academy of Engineering in 2012 Shen honest outcry International Petroleum industry Forum held recently .   With the rise of shale gas in the world , the development process is also used in the maide hydraulic fracturing method of rapid promotion , but the potential groundwater contamination and other environmental threats can not be underestimated . Previously, hydraulic fracturing has caused controversy in many countries , the French government issued a ban on its even .   For such a " recipe for disaster " technology , there is no proven technology can replace . However, according to the reporter , the world has begun to study the relevant alternative technologies , including some of China's research institutes.   It is reported that China University of Petroleum ( Beijing ) and China University of Petroleum ( East China ) After four years of research and experimentation , initially explore a supercritical carbon dioxide to develop unconventional oil and gas programs . Although the study is still in the laboratory stage, but for the alternative technology of maide hydraulic fracture stimulation ,the project leader Shen honest and told the " China Science News" reporter : "The future had to go this way ." Hydraulic fracturing controversy and more   The so-called hydraulic fracturing method refers to the chemical substance mixed with sand and high pressure water injection wells in parallel to break the shale and release shale gas. Every hydraulic breakers require millions of tons of water , and a large number of chemicals added to the fracturing fluid is injected though deep strata , without causing direct contamination of groundwater, but in the long run, there will still be a potential hazard.   In fact , hydraulic fracturing is not a new technology, already put forward in the 1940s , was mainly used in the transformation of old wells , enhanced oil recovery . According to Dean of China Langfang Development Research Institute of Petroleum Exploration Dingyun Hong , China's in the 1950s would hit the first saliva fracturing wells across the country each year there are 30,000 new wells.   For hypotonic ultra-low permeability oil , unconventional oil and gas reservoirs to increase production, the effect of hydraulic fracturing technology is obvious . But for such a shortage of large country , its fracturing process consumes a lot of water is quite amazing .   2011 China's first shale gas exploration in the Sichuan Weiyuan recovery , the British "Guardian" whether the region had adequate water resources has questioned , and that this will be the biggest challenge of shale gas development .   In addition, if shale gas development will lead to earthquakes and other issues , the U.S. Geological Survey is also under investigation , is not yet known .