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Par   •  19 Novembre 2015  •  Cours  •  299 Mots (2 Pages)  •  576 Vues

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Fracking

What is the fracking ?

Fracking mean hydraulic fracturing. It is « the process of drilling and injecting fluid into the ground at a high pressure in order to fracture shale rocks to release natural gas inside. »

It had been invented in 1947 as an experiment and found his commercial application in 1950

But this hydraulic fracture is really controversial. It had been report some undesirable impact around many well drilling for fracking. In fact expert said fracking has consequence on groundwater table. When the high pressure water mixture is inject down into rock fissures he release shale gas inside. People worried about this extraction because pollution incident and earthquake happened. For exemple the water of resident living nearby this extraction point being inflammable. That really a tragedy for household when they can’t anymore have access to running water. There is also a environment issus: Con frightened because fracking uses a huge amount of clean water.

On the Air quality pro said that natural gas produce less harmful particles in the air than coal. So it creating public health benefit naturally. But cons said that benefit is not relevant and should be relative. We cannot clean the aire up with only this solution. There is also the Greenhouse gas leak and methane issus. Pros support the reduction of greenhouse gas emission compared with coal emission. natural gas produce around 45% of the green house gas emission. Shale gas and methane are not so harmful than we can think. And in the same time it can lead us to abandon overtime the dependency on foreign oil. An other positive impact can be the lowering of taxes. Because it will wean the dependency of nation for oil. An other positive aspect is the increase return on investment.

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