TodayEco.com

17 Jun '12, 6pm

NRC report concludes hydraulic fracturing poses low risk for causing earthquakes, but risks are higher for waste...

NRC report concludes hydraulic fracturing poses low risk for causing earthquakes, but risks are higher for waste...

Energy technology projects that are designed to maintain a balance between the amount of fluid being injected and withdrawn, such as most oil and gas development projects, appear to produce fewer seismic events than projects that do not maintain fluid balance. Hydraulic fracturing in a well for shale gas development, which involves injection of fluids to fracture the shale and release the gas up the well, has been confirmed as the cause for small felt seismic events at one location in the world. Waste water disposal from oil and gas production, including shale gas recovery, typically involves injection at relatively low pressures into large porous aquifers that are specifically targeted to accommodate large volumes of fluid. The majority of waste water disposal wells do not pose a hazard for induced seismicity though there have been induced seismic events with a very limit...

Full article: http://www.greencarcongress.com/2012/06/nrc-20120617.html

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