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Barry Stevens

Barry Stevens

Dr. Barry Stevens has over 25 years of proven international experience building technology-driven enterprises and bringing superior products and services to market ahead of the…

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Is Fracking the Only Explanation for Earthquakes in Dallas?

It’s time to think out-of-the-box in regards to the influence of hydraulic fracturing and deep injection wells to seismicity. The relationship of these activities to seismic activity is strong and most likely correct to some degree. But could there be other influencing factors?

Anyone experienced in experimental design methodology knows that factors causing a response typical typically consist of only a few variables. Out of a large number of possible variables, these key variables have a significant influence the response of interest. Of these, only one or two may be single component variables. The remaining variables are interactive. That is, the interaction of two, typically overlooked, variables, may act as one. Independently they might not have a significant effect, but together they have a large influence on the response in question Traditional experimental techniques, such as one factor (variable) at a time experimentation, would not likely find these two-factor interactive variables. Will get back to this shortly!

Two shale gas processes have been attributed to seismic events.

Related Article: The Shale Gas Boom: How Scared is the Kremlin?

First  is the process of hydraulic fracturing, which are known to cause micro-seismic events about magnitude  -2, a slip of one tenth of mm, generating less energy than a gallon of milk falling off a kitchen counter These events are minuscule and not felt but measurable. They pose no public health or safety risks and occur on a continuous basis around the earth.

The second, wastewater injection wells are more active, typically between 1 and 4 on the Richter scale. These earthquakes are typically felt but rarely cause damage. The estimated frequency of earthquakes of this magnitude is about 1.3 million a year around the world
Most geologist know that under the right conditions, every time pressure is applied or reduced from an underground rock formation there is at least a small risk of a seismic activity.

These disturbances also include mining operations, driving piles for bridge and building construction, in seismically active areas.

Another possible cause of seismicity in the Dallas Fort Worth Region worth investigating is road construction. Whether an independent or an interactive factor, road work can induce earth quakes, especially when drill shafts and piers are constructed for bridges and overpasses.

Road Work Dallas

“Dallas-Fort Worth has the best and most extensive freeway system of a major metropolitan area on a per-capita basis when considering lane-miles of freeway and tollway, centerline miles, the quantity of multi-level interchanges, grid-style network, and percentage of freeways/tollways with frontage roads.

Related Article: South Africa Decides to go Forward with Hydraulic Fracturing

“According to a 2010 article, Dallas-area traffic has been among the worst in the nation for years, and for many commuters it’s about to get a lot worse before it gets better. Call it growing pains, or just one big mess, but construction has either already started or soon will on no fewer than a half-dozen of the most heavily traveled – and already backed up – traffic corridors in North Texas, as the region embarks on what may be the most aggressive road-building program in the country.”

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In closing, both shale gas drilling and road construction are as common in North Texas, as cowboy boots and pickups. Again, this is not to say that injecting hydraulic fracturing flowback in deep wells is not a major factor causing earthquakes in the DFW region, but it may not be the only cause.

By. Dr. Barry Stevens


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Leave a comment
  • Robert F. on October 11 2012 said:
    Recently in Alberta, CA and Blackpool,UK experts noted tremors in the 2.0 range that are much more substantial than "milk falling off a kitchen counter."

    http://goo.gl/aGM9q

    I just think the US suffers from a lack of study of the issues because nobody really wants to know the answers.
  • Gary on October 11 2012 said:
    Are people really so stupid? Why are having small Earthquakes in Texas, the same reason the occur all over the world. Because of fault lines. And texas has a couple of them, one running right thur Dallas http://www.beg.utexas.edu/UTopia/contentpg_images/central/central_7708.jpg

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