2013年8月21日星期三

Shale gas development environmental factors can not be ignored

Shale gas as an unconventional natural gas, global reserves of 456 trillion cubic meters, more than conventional gas reserves more than 78 trillion cubic meters. Compared to coal, oil,Fracturing proppant the shale gas cleaner combustion process and fewer emissions, so it has good economic and social environmental benefits. The United States is the world's most successful shale gas development in the country. If seriously, U.S. shale gas development can be traced back to 1821, but over the past decade, and hydraulic fracturing of horizontal wells core technologies such as the use of the popularity that makes the U.S. shale gas development has been a real speed, and get benefits. Thanks to the development of technology breakthroughs, to the 2010 U.S. shale gas production reached 137.9 billion cubic meters, total U.S. natural gas production was 23 percent, more than the annual output of natural gas;frac sand 2011, U.S. shale gas production over 1800 billion cubic meters, accounting for 34 per cent is reached. Shale gas development significantly reduce U.S. natural gas prices, improving energy self-sufficiency rate, improving the energy supply situation. U.S. shale gas development success, led to the world shale gas exploitation attention. However, it is concerned about the U.S. success, often overlooked U.S. shale gas problems, especially the negative impact to the environment. 2011, America's most popular environmental problem is about the exploitation of shale gas fracking damage to the environment.ceramic proppant Shale gas wells in some areas have been temporarily closed due to environmental issues. American community in the investigation of Marseille Las (Marcellus) shale gas development process found that shale gas development is not only consume a lot of water, but also on the local water, air and other ecological environment caused by the new threats.

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