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Canada's 500,000 Leaky Energy Wells: 'Threat to Public' -- Fracking Makes It Worse http://apocadocs.com/s.pl?1402021314
Alberta, for example, has failed to collect baseline data on the state of its groundwater resources prior to and after intense oil and gas activity for decades despite repeated warnings by scientists to do so. In recent years the increasing use of hydraulic fracturing has had the effect of drawing a red circle around the hidden liability of wellbore leakage.
Fracking has not only added more wellbores (and methane pathways) to the landscape in the rush to develop difficult hydrocarbons trapped in shale rock and coal but added more pressure and stress to wellbores causing more leaks.
The Waterloo report, quietly released last month, notes that the fluid injection of steam, water, sand or chemicals to force out more hydrocarbons "elevates the mechanical and thermal loading on wellbores, and significantly increases the probability of leakage problem development during the operational lifetime of the wellbore, before final abandonment."
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[Read more stories about:
fracking, methane release, climate impacts, corporate malfeasance]
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'Doc Jim says:
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This looks surprisingly like cause, followed inevitably by effect. How crazy is that?
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