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After the recent quakes near fracking wells in Poland, why can’t we say that fracking causes



Published: Wed, April 2, 2014 @ 12:00 a.m.

After the recent quakes near fracking wells in Poland, why can’t we say that fracking causes earthquakes?

First of all, there has been no official link established between the seismic events and Hilcorp’s wells. The Ohio Department of Natural Resources is conducting a thorough investigation and reviewing all of Hilcorp’s logs, but it is simply too soon to make that determination.

Additionally, the link between the act of fracking and seismic disturbance is tenuous at best.

Earthquakes are known to be connected to deep injection wells, such as the one in Youngstown that caused as many as 109 quakes in 2011 and 2012. Those wells dispose of fracking wastewater, sand and chemicals deep underground. The industry refers to it as the safest and most efficient way of disposing of waste, but the practice has been scientifically linked to earthquakes.

The instances have been particularly high in the Barnett Shale play, around Dallas-Fort Worth, and the quakes are growing in both number and size.

In the case of the Youngstown injection well, owned by D&L Energy, the well was drilled too deep and penetrated the Precambrian formation, an ancient rock formation between 9,000 and 9,600 feet below the ground in this area. Since the rock is older, preexisting faults are under more stress and are more susceptible to being disturbed when lubricated with liquid.

That kind of connection between quakes and injection wells does not exist with fracking, though. There are only three instances where the U.S. Geological Survey can definitively say that fracking caused quakes.

Only one case happened in the United States—in Oklahoma, which has seen a dramatic rise in quakes between 2009 and 2013. The other two events occurred in British Columbia and England. That, certainly, is not enough evidence to say the practice of fracking, itself, triggers seismic activity.

What can be said, however, is that the underlying geology of certain areas may not be conducive to fracking, raising the probability that quakes will occur. That was the case in Oklahoma, and it may be the case in Poland, as well.

But if it does turn out that fracking was the trigger for the Poland tremors, it would be the exception, not the rule. According to FracTracker, there have been 1.1 million wells drilled in this country, and even more abroad. So the instances are extremely low.

For now, much remains unknown about what happened in Poland. We don’t have much information about what the geology is there, and ODNR continues to use a network of seismic monitors to better understand what happened there.

There have been calls for ODNR to move portable monitors to the site, but there has been no movement on that so far, and ODNR believes it has enough solid data at the moment to monitor the region as it continues its investigation. There has been outside interest from USGS and Lamont-Doherty Earth Observatory to move similar devises into the area, but they have not taken any action yet, likely as a professional courtesy to ODNR.

The picture will remain somewhat hazy until the investigation is complete. But for now, it is safe to say that fracking is not a definitive trigger for earthquakes, but if the geology of a certain drilling area is not right, tremors could occur.

Questions about shale development or the fracking process can be sent to news@shalesheet.com.


Comments

1handymandave(419 comments)posted 3 months, 4 weeks ago

The Natural Gas Companies who are making and spending millions on these wells don't want you associating they're fracking with earthquakes. As well they would appreciate it if you didn't blame them for water that you can ignite when your kitchen sink is running, global warming, unusual cancer diagnosis, and polluted lakes and rivers.

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2oh13voter(1200 comments)posted 3 months, 4 weeks ago

Shale development has nothing to do with methane in water wells (myth), global warming is a myth, there has never been a link made between shale development and any cancer diagnosis, what polluted lakes and rivers?

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3thirtyninedollars(173 comments)posted 3 months, 4 weeks ago

Oklahoma is still experiencing earthquake swarms as of this week.
How does fracking happen? Liquids are injected under high pressure. How is this much different than a deep injection well besides the depth of the well drilled?
Since fracking takes advantage of existing fractures, it is quite possible the fracking blew up the existing fractures like it was supposed to except one was a little too close to a fault..
Maybe those phd's are blinding common sense/science.

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4bunkpatrol(63 comments)posted 3 months, 4 weeks ago

It is indeed news that the Vindicator has been outed as being on Governor Kasich's "frack friendly" list along with numerous regulators, politicians, and other media outlets.

My comment suggesting this was censored. I was the first to comment this morning.

I'm done with this poor excuse for "news". No wonder this forum is so lopsided with big business cronies.

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5TheFarmersWife(7 comments)posted 3 months, 2 weeks ago

Oh the difference a week or so makes! Why can't we do energy w/o poisoning people and then trying to lie/ cover-up the facts?

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