2016年1月13日星期三

Hydraulic fracturing is a safe, proven and government-regulated technology

Hydraulic fracturing is a safe, proven and government-regulated technology that has been used in Canada for more than 60 years. In hydraulic fracturing, fluids are injected at pressures that exceed the natural stresses on the rock and cause it to crack, or fracture. Creating these fractures in hydrocarbon-bearing rock layers deep underground is not enough to allow oil and gas to flow into the wellbore.Once the fractured reservoir rock is held open with fluid pressure, proppant, usually sand or ceramic proppants, is introduced into the fluid to prop open the fractures. After the hydraulic fracturing process, the fracturing fluids are recovered and the fractures remain held open by proppant. The
hydrocarbons trapped inside the rocks can now flow more easily through the cracks to the wellbore.

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