08 Jan '12, 8pm

Fracking Earthquakes Becoming Serious Cause for Concern

New reports are surfacing that link fracking to earthquakes that occurred in January in Oklahoma. According to a new study by the Oklahoma Geological Survey [PDF ] , fracking is linked to 50 mini-earthquakes that occurred on January 18, 2011 in Oklahoma. The occurrence of so-called “induced seismicity” – seismic activity caused by human actions – in conjunction with fluid injection or extraction operations is a well-documented phenomenon. However, induced earthquakes large enough to be felt at the surface have typically been associated with large scale injection or withdrawal of fluids, such as water injection wells, geothermal energy production, and oil and gas production. It was generally thought that the risk of inducing large earthquakes through hydraulic fracturing was very low, because of the comparatively small volumes of fluid injected and relatively short time-fra...

Full article: http://www.desmogblog.com/fracking-earthquakes-becoming-s...

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