New Study Blames Texas Earthquakes on Fracking

October 23, 2019

Houston Chronicle:

A new study from the University of Texas at Austin blames hydraulic fracturing for causing some earthquakes in the Permian Basin of West Texas, dispelling the widely held view that oilfield wastewater disposals wells were solely responsible for the man-made tremors.

In a study released Tuesday afternoon, scientists with the TexNet Seismic Monitoring Program at UT Austin reported that some earthquakes in Reeves, Pecos and Culberson counties may have been caused by fracking, the process of pumping water, sand and chemicals at high pressures deep underground to crack shale rock and unlock and oil natural gas.

Previous studies had blamed the earthquakes in oil-producing regions on disposal wells, into which wastewater from drilling, hydraulic fracturing and production activities is injected.

“The research done through this new study in West Texas, using a statistical approach to associate (earthquakes) with oil and gas operations, suggests that some (earthquakes are) more likely related to hydraulic fracturing than saltwater disposal,” Alexandros Savvaidis, a research scientist and manager of the TexNet Seismic Monitoring Program, said in a statement.

TexNet was created ted by the Texas Legislature in 2015 to study the growing number of earthquakes around the state and their relation to oil and gas drilling. TexNet, funded by the state and housed at UT Austin, has nearly 60 seismographs deployed across the state. Its research arm, the Center for Integrated Seismicity Research, or CISR, is funded by the state in partnership with companies such as Chevron, Exxon Mobil and Shell.

So far this year, TexNet seismographs have recorded 209 earthquakes across the state above a 2.0-magnitude, which the US. Geological Survey reports are not generally felt. The strongest of this year’s quakes was recorded near Synder on Oct. 1. — a 3.8-magnitude tremor, strong enough be felt by some people on the ground and those in the upper floors of buildings.

The number of earthquakes recorded this year have already outpaced the 192 recorded by TexNet last year when the strongest one recorded was on Oct. 20, 2018 near Amarillo — a 4.2-magnitude earthquake that should have been strong enough to be felt by people indoors in addition to rattling dishes, windows and doors.

Sharon Wilson, an anti-fracking activist and Dallas organizer for the environmental group Earthworks, said the study confirmed what she and others have been saying for years — that hydraulic fracturing can cause earthquakes.

While previous studies from Southern Methodist University, the U.S. Geological Survey and other sources blamed earthquakes in North Texas on saltwater disposal activity, Wilson and others insisted on calling the tremors “frackquakes.”

“It’s no surprise to communities affected by these quakes that science confirms they’re fracking-related,” Wilson told the Houston Chronicle. “But there’s a gap between what the science repeatedly shows and what Texas regulators require to protect the public. And that’s a chasm that Texas families and their homes have fallen into for years.”

Following a string of earthquakes in Azle and other towns in the Barnett Shale of North Texas in 2013, the Railroad Commission of Texas, the state agency that regulates the oil and gas industry, hired a seismologist and adopted stricter regulations for saltwater disposal wells in November 2014.

Over the last five years, the agency has received 657 disposal well applications in areas of where earthquakes has occurred historically. Of those proposed projects, 302 permits were issued with special conditions that include reducing maximum daily injection volumes and pressures.

Applications for 91 disposal sites were returned or withdrawn. Another 82 applications were sent to hearing while 25 permits were issued without special conditions and 157 applications are pending technical review

It remains to be seen how or if the new study will lead the Railroad Commission to consider new regulations. Railroad Commission seismologist Aaron Velasco, who serves as a technical advisor to TexNet, said the agency and its procedures are based on the best available science at the time.


6 Responses to “New Study Blames Texas Earthquakes on Fracking”

  1. rhymeswithgoalie Says:

    I think fracking as an investment is hitting the skids, both in terms of keeping plays viable and competition from oil producers desperate for cash while they can still get it.

  2. rhymeswithgoalie Says:

    Cenk is ranty in this, but he’s spot on:

  3. redskylite Says:

    Four years is a miniscule blip on the history of Earth deep time scale, but to me, in impatient human time, the Trump years are crawling by. The unthinkable is that he gets a further shot. He has powerful partners. Let’s hope his foes (and their partners) are up to the fight, this time around, else the future looks dim to me in human terms. The oil barons have a lot to sweat about, but that’s when they’re at their most dangerous.


    Warren’s 2020 ascent sends ripples through oil industry

    Elizabeth Warren’s rise in the 2020 Democratic primary fight is forcing oil companies and analysts to grapple with the potential effects of the liberal Massachusetts senator winning the White House.

    Why it matters: Warren, now challenging Joe Biden for frontrunner status, has pledged to halt hydraulic fracturing — the extraction technique that has enabled the U.S. oil and natural gas boom. She’s also pledged to end new leasing on federal lands.

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