At hyperbaric bomb-like pressures, this technology propels five to seven million gallons of sand-and-chemical-laced water a mile or so down a well bore into the shale.
The process involves drilling a well then pumping in millions of gallons of water, sand and chemicals under high pressure.
Fracking works by injecting millions of gallons of water, sand and chemicals into horizontal wells at high pressure, fracturing the shale and releasing gas.
Extracting fuel from shale formations requires pumping hundreds of thousands of gallons of water, sand and chemicals into the ground to break apart rock and free the gas.
" Hydraulic fracturing, or fracking, involves blasting millions of gallons of water, sand and chemicals into shale formations, in order to allow oil and gas to flow out.
They both say that fracking, which involves injecting millions of gallons of water, sand and treated chemicals deep into the gas bed, could lead to water pollution and fish kills.
Then they shoot thousands of gallons of water, sand and chemicals into the shale formation, creating hairline fractures in the rock hence the procedure's proper name, "hydraulic fracturing".
It can take up to 6m gallons of water, sand and chemicals pumped into the ground at high pressure to flush out oil and gas from the rock formations for a single well.
For those still vague on the details of what fracking actually means, it is a process of natural gas drilling in which millions of gallons of water, sand and chemicals, some of them toxic, are pumped below ground to break up rock and release bubbles of gas stored inside.
Drillers use millions of gallons of water, sand and some chemicals to fracture the shale and release the gas trapped inside.
