Thursday, September 19, 2013

Fracked Shale Formations Could Store Carbon Dioxide, Study Says

The Marcellus shale formation (beige) spans six states in the northeastern U.S. Red and black dots indicate locations of natural gas wells completed between 2003 and 2011. (Image credit: U.S. Energy Information Administration)
Storing carbon dioxide in the same shale formations that produce natural gas may be an effective way to sequester carbon dioxide produced by fossil fuel-burning power plants, according to a U.S. study. Computer models by researchers at the University of Virginia suggest the Marcellus Shale, a 600-square-mile formation in the northeastern U.S. that is a center of hydrofracturing natural gas, is capable of storing half the CO2 emitted by U.S. coal plants from now to 2030.

One advantage of using fracked shale formations for carbon storage is that it would not require building new infrastructure to sequester the CO2.

A question that needs to be answered is whether the stored carbon, injected in the wells in liquid form, would migrate back toward the surface in fracked shale formations.

Fracked Shale Formations Could Store Carbon Dioxide, Study Says

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