Truth Frequency Radio
Nov 06, 2013

fracking-injection-gas-wells-oil-natural-industry-earthquakes-truth-frequency-radio-chris-geo-sheree-geo-alternative-media-news-informationBy Tamarra Kemsley, Nature World News

The injection of massive amounts of gas underground may have triggered a spate of small earthquakes near Snyder, Texas between 2006 and 2011, a new study found.

Though no injuries or severe damage were linked to the earthquakes, researchers note that the study marks the first time underground gas injection has been linked to quakes greater than magnitude 3.

Published in the Proceedings of the National Academy of Sciences, the study also discovered that similar rates of injection failed to trigger quakes in other areas — an observation that adds weight to the possibility that underground gas injection does not result in major seismic events in many geologic settings.

The area examined, located in northwest Texas, is home to three large oil and gas fields that have been at work producing petroleum for more than half a century. Operators first began injecting CO2 in one of the fields in 1971 in order to boost production and a second field in 2001.

Wei Gan and Cliff Frohlich of the University of Texas at Austin’s Institute for Geophysics used a network of seismometers to identify 93 earthquakes that took place in the area of the second field known as the Cogdell between March 2009 to December 2010, all of which were greater than magnitude 3. These were followed by an even larger 4.4 magnitude earthquake in September 2011.

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