Types of fracking chemicals that are used for hydro fracking is derrick- which is a form of natural gas process involves drilling 5,000 feet or more down and a comparabl distance horizontally. The majority of the drilling liquid remains in the ground and is not biodegradable. Well casing- if the well casing that penetrates through the aquifer is not well sealed, chemicals can leak into the aquifer. Fractured shale- which is to release gas from underground, millions of gallons of water, sand and propreitary chemicals are injected under high pressure into the well.
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