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Fracking Firm Admits It Caused Earthquakes

RP Siegel | Friday November 11th, 2011 | 11 Comments

Ban FrackingGiven the twin concerns of peak oil and climate change, it’s no surprise that natural gas (with its lower carbon intensity than coal) has been hailed by many as the salvation of our modern way of life, at least for now. And with the discovery of enormous deposits under Marcellus Shale in the Eastern US, and other deposits in the Southwest, it’s even more appealing, since that is keeping prices relatively low.

In fact, according to EPA Administrator Lisa Jackson, President Obama “has made clear that natural gas has a central role to play in our energy economy.”

Unfortunately, in our eagerness to get our hands on all that shale gas, we have allowed what seemed to be an expedient solution to be applied, once again, without truly understanding its broader implications.

Apparently, we seem to be having a hard time learning the basic lesson that everything is connected to everything else, even if it’s underground. So, it seems that large volumes of water pumped into the ground at high pressure, in a process called hydraulic fracturing or fracking, does not simply disappear.

Unfortunately, once the water has finished doing its work of breaking up the shale layers to allow the gas to be collected, it doesn’t necessarily stay put. In fact it often finds its way into groundwater, wells and waterways.

According to Water Contamination From Shale, “Landowners in shale gas drilling areas have reported foul smells in tap water, and toxic chemicals, such as benzene, have been detected in water from wells near drilling sites. In some cases, tap water can even be set aflame because it is contaminated with volatile chemicals because of shale gas drilling.” Writing in Scientific American, Chris Moo0ney adds, ” “One risk is that this water has to be recovered and stored in surface ponds for re-use. About 75% returns to the surface and also carries whatever has been dissolved from the shales, which can be extremely hazardous.”

This, up until now, has been the primary objection that many groups have raised to the practice, which they claim, is reckless and is being implemented with insufficient consideration of the wider-ranging consequences.

Now, there appears to be another problem. Earthquakes. Given that the geological structures found beneath the ground are the result of dynamic processes and not of intentional design, they are not always as stable as they could possibly be. In some cases, the disturbance caused by the injection of high pressure water jets designed to fracture rock could cause them to collapse. This is apparently what happened at a fracking site near Blackpool, in England. This is not simply the pet theory of some fringe environmental group trying to pin the blame for a natural phenomenon on a company performing operations that they vigorously object to.  In fact, it was the fracking company itself, Cuadrilla Resources, who announced after an investigation that, “It is highly probable that the hydraulic fracturing of Cuadrilla’s Preese Hall-1 well did trigger a number of minor seismic events.”

The company went on to say that it was “due to an unusual combination of geology at the well site coupled with the pressure exerted by water injection as part of operations,” and that “this combination of geological factors was extremely rare and would be unlikely to occur together again at future well sites.”

But despite this last claim, the US Geological Survey recently announced findings indicating that fracking operations may have been responsible for as many as 50 earthquakes in Oklahoma last January. Here is an excerpt from the report.

Our analysis showed that shortly after hydraulic fracturing began small earthquakes started occurring, and more than 50 were identified, of which 43 were large enough to be located. Most of these earthquakes occurred within a 24 hour period after hydraulic fracturing operations had ceased.

While the report does not claim to definitively prove the connection (it is still under peer review), it does indicate, “strong correlation in time and space as well as a reasonable fit to a physical model suggest[ing] that there is a possibility these earthquakes were induced by hydraulic fracturing.”

So with all these problems, where does that leave fracking?

A recent article in the NY Times describes a new technique using liquefied propane gel instead of water which appears to be cleaner and safer. The magic behind this process lies in the fact that under high pressure and temperature, the propane gel turns into a gas when it’s done so that is be sucked up and collected and eventually burned along with the other natural gas it has been used to collect. The company behind this is GasFrac. As an added benefit, says their CTO Robert Lentz, “we leave the nasties in the ground, where they belong.” The “nasties” are all the chemical additives that are apparently required to release the gas from between the rock layers.

I’ve been saying all along that there has to be a better way of getting that gas out of there, if we need to, without doing so much in the way of collateral damage. I don’t know if this method is the best of all possible methods, but it sounds like a heck of an improvement over fracking.

[Image Credit: billb1961 :Flickr Creative Commons]

RP Siegel, PE, is the President of Rain Mountain LLC. He is also the co-author of the eco-thriller Vapor Trails, the first in a series covering the human side of various sustainability issues including energy, food, and water.  Like airplanes, we all leave behind a vapor trail. And though we can easily see others’, we rarely see our own.

Follow RP Siegel on Twitter.


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  • Witness

    As evidence to “prove” fraccing contaminates water you provide a link to a law firm ad actively soliciting clients? Ambulance chasers are your source of information? But no mention of the scientific studies by Duke and U Texas showing no such links to frac fluids??
    Pshaw! Your argument becomes farcical.
    If you want oppose something, better to have a rational fact based debate using the most recent information as opposed to your hysterical scare mongering.

    • http://www.triplepundit.com/author/bob-siegel/ RP Siegel

      The fact that fracking contaminates water is well established and does not need proof. There are many websites stating this and I just grabbed one at random, since this was not the point of the article at all, but merely establishing the background. The article is about the earthquakes which further illustrates the fact that rushing into this endeavor in pursuit of quick profit is the opposite of sustainable thinking. This clearly illustrates the point that the impacts of this technology are not well understood and the potential for catastrophic outcomes are real. It seems to me, the only ones defending it at this point are those who stand to profit from it. I am not against the use of natural gas as an interim energy source, but it must be done responsibly and safely. IF you took the time to read the article to the end, you would see that I describe a new technique for gas drilling that just might meet these criteria.

      • Rick Stiles

        Explain how fracking 1 mile deep contaminates a water well 1/25th of a mile deep, or causes an earthquake 5 to 15 miles deep.
        I live in central Oklahoma, have no financial ties to the energy market, but remain very skeptical of your comments that are “well established and does not need proof.” The “flat earth” concept and the “earth is the center of the universe” concept were both well established and did not need proof, until they were “proven” wrong.

  • Robert Finne

    There are hundreds of cases of contaminated water and the industry has been busy paying them off and silencing critics with non disclosure agreements. The Hollowell case in PA is the most recent and high profile.
    I can’t blame people for signing non disclosures either. Most of them just want to get as far away from the shale as they can.

    The EPA just yesterday released an initial report that water in Pavilion WY is tainted with fracking chemicals too.
    http://www.scientificamerican.com/article.cfm?id=epa-finds-fracking-compound-wyoming-aquifer

  • Robert Finne

    The industry has hidden behind non disclosure agreements on settlements for years now. The most recent high profile case is the Hollowells in PA.

    EPA released this report yesterday detailing water contamination from hydraulic fracturing.
    http://www.scientificamerican.com/article.cfm?id=epa-finds-fracking-compound-wyoming-aquifer

  • John Hughes

    In terms of your information sources, I agree with Witness. If its a well-established fact, then it should be no problem for you to find a peer-reviewed article from a science journal confirming such, instead of a random website.

    Or at the least, find a blog from a scientist, ie. http://all-geo.org/highlyallochthonous/2011/11/a-short-faq-on-earthquakes-and-fracking/

    Hack journalism starts with not knowing who are the real experts.

    • http://www.triplepundit.com/author/bob-siegel/ RP Siegel

      Fair enough. I admit to being a little hasty in selecting a source to illustrate the well-known fact that fracking runoff contains hazardous pollutants. I have added a second source to the post from the Wiley-Blackwell Earth Science website, which cites Scientific American.

      • http://www.triplepundit.com/author/sldi/ Terry Mock

        Bob, thanks once again for having the guts to stick your neck out, and the humility to correct yourself in light of legitimate criticism. As someone myself, who has hoped for domestic natural gas to fill the critical role of a bridge fuel to a sustainable future, I support your call for the industry to find ways to address realistic concerns about shortsighted practices.

  • http://www.facebook.com/people/Amanda-Crater/1215948604 Amanda Crater

    Great article. I recently attended an anti-fracking event held by the organization As You Sow, which pursues sustainability through shareholder initiatives. Here’s more info about that event: http://www.opportunitygreen.com/green-business-blog/2011/10/30/og-joins-as-you-sow-for-an-event-offering-a-look-into-the-shocking-future-of-fracking-in-la-and-other-cities/

  • Micah5five

    Ok I just wish people would make up their minds. They complain about gas and oil prices + more. Then they don’t want to let us Drill for our OWN Oil.. HUH??? Lets keep buying from our country create more jobs, and get out of debt, and not depend on other countries for oil….

  • ME

    Unfortunately these reports are all misleading.  The chemicals used in the fracking fluids have a half-life of less than 2 or 3 days, which means they become harmless.  The bacterial that is deep in the earth it one of the problems and the reason for the retaining ponds.  This bacteria does not live long in oxygen.
    There is available technology that can purify these fracking fluids quickly and simply.

    Because sand fills the cracks, earthquakes do not happen as a result of cracking the rock.
    The water table is too shallow compare to the depths of these well.