Hydraulic fracturing or “Fracking”. Truth about Fracking , Chris Mooney, Scientific American, November 2011. Information from: . Fact-Based Regulation for Environmental Protection in Shale Gas Development: A report by the Energy Institute, UT, Austin
Truth about Fracking, Chris Mooney, Scientific American, November 2011
Natural gas power plants produce:
Compared to the average air emissions from coal-fired power plants
However, natural gas (methane) is about 70 times more powerful than CO2 as a greenhouse gas
Current estimate of shale gas resource: 862 trillion cubit feet (TCF) in continental US
One TCF of natural gas is enough to heat 15 million homes for 1 year, generate 100 billion kilowatt-hours of electricity, or fuel 12 million natural-gas-fired vehicles for 1 year. (Source: EIA)
Mid-Continent: Fayetteville, Woodford (8%)
Rocky Mountain: primarily Mancos and Lewis (6%)
Gulf Coast: Haynesville, Eagle Ford (13%)
Southwest: Barnett and Barnett-Woodford (10%)
However, this study found no evidence for contamination of the shallow wells near active drilling sites from deep brines and/or fracturing fluids.
PNAS, May 2011
Leakage from wells seem to be the most likely cause for groundwater contamination by thermogenic methane and/or fracture fluids.
Can be :
“EPA estimated that if 35,000 wells are hydraulically fractured annually in the US, the amount of water consumed would be equivalent to that used by 5 million people.”