technique used to get gas and oil from shale rock. The process of fracking is injecting the mixture of water, sand and chemicals into the rock at a high pressure to release gas (BBC, 2013). Fracking technology experiences long time of development. In 1947, Stanolind Oil conducted the first experimental fracturing to stimulate natural gas; in 1949 Halliburton conducted the first commercial fracturing to extract natural gas (Montgomery and Smith, 2010). Until 2003 fracking was used widely, energy companies…
Words 1921 - Pages 8
