Wastewater

John Armbruster, a seismologist from Columbia University’s Lamont-Doherty Earth Observatory in Palisades, NY is one of the researchers investigating a string of 11 earthquakes near Youngstown, OH, the most recent of which occurred on New Year’s Eve in the afternoon. Armbruster says a local injection well, which injects wastewater from shale gas drilling under high pressure deep into the ground, is “almost certainly” the cause of the earthquakes.

As MDN pointed out yesterday, injection wells are not fracked gas wells (see this MDN story). But some politicians keep trying to tie the two together. A spokesman for Ohio Gov. John Kasich, Rob Nichols, does a great job in pointing out the difference:

Read More “Youngstown Earthquake Update”

A 4.0 earthquake in the Youngstown, OH area on Saturday afternoon is thought to be connected to a local injection well. MDN has chronicled previous episodes of earthquakes thought to be connected with injection wells in Arkansas and Texas. Saturday’s earthquake was the 11th in the Youngstown area in recent months, and by far the strongest. The theory is that fluid, which is pumped nearly two miles underground under very high pressure, had migrated to a nearby fault and is causing the fault to shift.

Until it can be determined what, exactly, is happening, all further injection of fluid into the well has been stopped. In fact, fluid injection had stopped a day earlier, on Friday, before Saturday’s quake. But pressure in the well would remain high for a period of time, likely leading to the 4.0 quake.

Read More “Youngstown Earthquake and Fracking: Is There a Connection?”