Fracking at greater depths can lead to ten times the risk of earthquakes, study finds

Earthquakes linked to fracking have been triggered around the world, including in multiple US states

Louise Boyle
New York
@LouiseB_NY
Friday 24 July 2020 19:51
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Pumpjacks at fracking sites. Drilling deeper for oil and gas has been linked to the increased likelihood of triggering earthquakes, according to a new study
Pumpjacks at fracking sites. Drilling deeper for oil and gas has been linked to the increased likelihood of triggering earthquakes, according to a new study

Fracking operations that drill deeper into the earth can make triggering an earthquake almost ten times more likely, according to a new study.

The report, published this week in the Bulletin of the Seismological Society of America (BSSA), is based on data from more than 1,300 single well sites across Oklahoma.

The study found that in one rock layer, the likelihood that fracking triggered seismic activity increased from 5 to 50 per cent with increasingly deeper well operations, from 0.9 to 3.4 miles (1.5 to 5.5km).

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