Hydraulic fracking strengths and weaknesses

We have long been considered a non- gelled water is one of the most cleanest, most economical fracturing fluid . If the filtration problems in the formation  maide fracturing fluid compatibility issues and minimal case , the non- thickened water as a base fracturing fluid will be of great significance . These stimulation usually refers to  maide hydraulic fracturing benefits ,reducing water resistance or branches fracturing fracturing ( occasionally ) , they usually require a large number of high-speed pumped water containing a small amount of reducing agent and proppant . In the application, compared with the traditional thickening fluid , this method can reduce the capital investment on the one hand , on the other hand so that hydraulic fracturing is more economically viable than other uses thickening fluid fracturing methods. Like other technical measures to increase production and hydraulic fracturing has its advantages , but also has its drawbacks . This particular method is the key to its screening principles will be applied to fit the unique advantages of this region or strata .

1 maide fracturing proppants potential advantages include:

2 simple operation, the use of a single chemical agents ;
3 can produce a considerable length of hydraulic ;
4 initial production can be compared with the normal stimulation intended ;
5 . Costs lower than normal stimulation .
As expected, the hydraulic fracturing also has shortcomings, such as :
1 confined to the low amount of sand strata ;
2 rapid sand filtration rate ;
(3) the effective fracture length is shorter ;
4 Compared with ordinary fracturing operations of similar size , the larger the decrease in final yield ;
5 The following fracturing aquifer has certain risks.
In essence , the hydraulic fracturing of various unfavorable factors show poor ability to carry proppant fracturing fluid . If the proppant can be effectively carried in place of water , the potential adverse consequences will be significantly reduced or even disappear completely .

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 .