News / Science & Technology

Oklahoma Earthquake Surge Linked to Gas Wastewater Wells

Seismic Surge Linked to Gas Industry Waste Wells in Oklahomai
X
Rosanne Skirble
July 03, 2014 11:47 PM
Earthquakes are shaking the Midwestern state of Oklahoma, more than any other state in the country, even quake-prone California. Before 2009, Oklahoma had about two earthquakes of magnitude 3.0 or greater annually. So far this year, the number has skyrocketed to more than 200. As VOA’s Rosanne Skirble reports, a new study finds clues to that increase in underground wells drilled by the gas and oil industry.
Seismic Surge Linked to Gas Industry Waste Wells in Oklahoma
Rosanne Skirble

There's a surge in earthquakes in Oklahoma, and a new study finds injecting wastewater into the ground, a common practice in oil and gas operations, is triggering those quakes.
 
Katie Keranen was at home in 2011 when the 5.6-magnitude earthquake, the biggest ever recorded in Oklahoma, struck.

“It shook my house pretty strongly. I was actually mildly scared," Keranen said. "You could look up and see the top of the roof shaking.”    

The earthquake certainly caught Keranen’s attention. Now a geophysics professor at Cornell University, she led a study to examine the huge expanding swarm of quakes in Oklahoma.

'We wanted to figure out what the root cause was, what was actually causing the entire part of central Oklahoma to light up,” she said.

Keranen suspected that gas and oil wells had something to do with it. Oklahoma has some 4,400 underground disposal wells, where wastewater is injected back deep in the earth after drilling.  Her team calculated how easily the fluid moved through the rocks and the rise in water pressure at 89 well sites.

“Once we had the earthquake locations and the fluid pressure increases in space and time, we were able to correlate those two together and figure out how much fluid pressure went up at each earthquake location from those wells," she said. "And what we were able to find is that the fluid pressure at the earthquakes went up enough to trigger the earthquakes in basically each case.”

Four highly active wells accounted for most of the increased water pressure.  Yet that rise was enough to trigger a front of seismic activity tens of kilometers away.  

Keranen hopes the study results, reported in Science, can help the oil and gas industry decide how to better manage and treat wastewater to mitigate any impact.  
 
"I think that industry can learn basically, what are the largest risks, what are the risk factors for wells for triggering earthquakes, and then design the wells to keep those sub-surface pressures lower to lower that risk of potentially triggering a quake,” she said.

Earthquakes Swarm in Central Oklahoma
Earthquakes Swarm in Central Oklahomai
|| 0:00:00
...    
🔇
X

The study also highlights the value of monitoring water pressure and seismic activity at injection wells, especially those near major faults.  

The oil and gas industry takes the issue very seriously, and will look at Keranen's findings, says Shawn Bennett, a spokesman for the Independent Petroleum Association of America, which represents oil and natural gas producers.  He says the industry is actively engaged in studying the problem. 

"Currently there are regulators from several states including Ohio, where I am from, who have formed the States Induced Seismicity Work Group in order to address this extremely rare occurrence,” he said. “ The oil and gas industry always looks forward to working with them to ensure that the safe production of our oil and gas resources are done in a proper manner."

Bennett says mechanisms are in place to mitigate earthquake risk at disposal well sites. It's a matter of finding out which approaches work best and then implementing them in a responsible manner.

You May Like

Kurdish President: More Needed to Defeat Islamic State

In interview with VOA's Persian Service, Massoud Barzani says peshmerga forces have not received weapons, logistical support needed to successfully fight IS in northern Iraq More

Sierra Leone's Stray Dog Population Doubles During Ebola Crisis

Many dog owners fear their pets could infect them with the virus and have abandoned them, leading to the increase and sparking fears of rabies More

Video New Brain Mapping Techniques Could Ease Chronic Pain

New methods for mapping pain in the brain not only validate sufferers of chronic pain but might someday also lead to better treatment More

This forum has been closed.
Comments
     
There are no comments in this forum. Be first and add one

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
New Brain Mapping Techniques Could Ease Chronic Paini
X
Shelley Schlender
April 20, 2015 7:03 PM
Pain has a purpose - it can stop you from touching a flame or from walking on a broken leg. As an injury heals, the pain goes away. Usually. But worldwide, one out of every five people suffers from pain that lasts for months and years, leading to lost jobs, depression, and rising despair when medical interventions fail or health experts hint that a pain sufferer is making it up. From Boulder, Colorado, Shelley Schlender reports that new methods for mapping pain in the brain are providing validation for chronic pain and might someday guide better treatment.
Video

Video New Brain Mapping Techniques Could Ease Chronic Pain

From Boulder, Colorado, Shelley Schlender reports that new methods for mapping pain in the brain are providing validation for chronic pain and might someday guide better treatment.
Video

Video Hope, Prayer Enter Fight Against S. Africa Xenophobia

South Africa has been swept by disturbing attacks on foreign nationals. Some blame the attacks on a legacy of colonialism, while others say the economy is to blame. Whatever the cause, ordinary South Africans - and South African residents from around the world - say they're praying for the siege of violence to end. Anita Powell reports from Johannesburg.
Video

Video Italy Rescues Migrants After Separate Deadly Capsize Incident

Italy continued its massive search and rescue operation in the Mediterranean Monday for the capsized boat off the coast of Libya that was carrying hundreds of migrants, while at the same time rescuing Syrian migrants from another vessel off the coast of Sicily. Thirteen children were among the 98 Syrian migrants whose boat originated from Turkey on the perilous journey to Europe.
Video

Video New Test Set to Be Game Changer in Eradicating Malaria

The World Health Organization estimates 3.4 billion people are at risk of malaria, with children under the age of five and pregnant women being the most vulnerable. As World Malaria Day approaches (April 25), mortality rates are falling, and a new test -- well into the last stage of trials -- is having positive results in Kenya. Lenny Ruvaga reports for VOA from Nairobi.
Video

Video Are Energy Needs Putting Thailand's Natural Beauty at Risk?

Thailand's appetite for more electricity has led to the construction of new dams along the Mekong River to the north and new coal plants near the country's famous beaches in the south. A proposed coal plant in a so-called "green zone" has touched off a debate. VOA's Steve Sandford reports.
Video

Video Overwhelmed by Migrants, Italy Mulls Military Action to Stabilize Libya

Thousands more migrants have arrived on the southern shores of Italy from North Africa in the past two days. Authorities say they expect the total number of arrivals this year to far exceed previous levels, and the government has said military action in Libya might be necessary to stem the flow. VOA's Henry Ridgwell reports.
Video

Video Putin Accuses Kyiv of ‘Cutting Off’ Eastern Ukraine

Russian President Vladimir Putin, in his annual televised call-in program, again denied there were any Russian troops fighting in Ukraine. He also said the West was trying to ‘contain’ Russia with sanctions. Henry Ridgwell reports on reactions to the president’s four-hour TV appearance.
Video

Video Eye Contact Secures Dog's Place in Human Heart

Dogs serve in the military, work with police and assist the disabled, and have been by our side for thousands of years serving as companions and loyal friends. We love them. They love us in return. VOA’s Rosanne Skirble reports on a new study that looks at the bio-chemical bond that cements that human-canine connection.
Video

Video Ukrainian Volunteers Search for Bodies of Missing Soldiers

As the cease-fire becomes more fragile in eastern Ukraine, a team of volunteer body collectors travels to the small village of Savur Mohyla in the what pro-Russian separatists call the Donetsk Peoples Republic - to retrieve bodies of fallen Ukrainian servicemen from rebel-held territories. Adam Bailes traveled with the team and has this report.
Video

Video Xenophobic Violence Sweeps South Africa

South Africa, long a haven for African immigrants, has been experiencing the worst xenophobic violence in years, with at least five people killed and hundreds displaced in recent weeks. From Johannesburg, VOA’s Anita Powell brings us this report.
Video

Video Apollo 13, NASA's 'Successful Failure,' Remembered

The Apollo 13 mission in 1970 was supposed to be NASA's third manned trip to the moon, but it became much more. On the flight's 45th anniversary, astronauts and flight directors gathered at Chicago's Adler Planetarium to talk about how the aborted mission changed manned spaceflight and continues to influence space exploration today. VOA’s Kane Farabaugh reports.
Video

Video Badly Burned Ukrainian Boy Bravely Fights Back

A 9-year-old Ukrainian boy has returned to his native country after intensive treatment in the United States for life-threatening burns. Volodia Bubela, burned in a house fire almost a year ago, battled back at a Boston hospital, impressing doctors with his bravery. Faith Lapidus narrates this report from VOA's Tetiana Kharchenko.
Video

Video US Maternity Leave Benefits Much Less Than Many Countries

It was almost 20 years ago that representatives of 189 countries met at a UN conference in Beijing and adopted a plan of action to achieve gender equality around the world. Now, two decades later, the University of California Los Angeles World Policy Analysis Center has issued a report examining what the Beijing Platform for Action has achieved. From Los Angeles, Elizabeth Lee has more.
Video

Video Endangered Hawaiian Birds Get Second Chance

Of the world's nearly 9,900 bird species, 13 percent are threatened with extinction, according to BirdLife International. Among them are two Hawaiian honeycreepers - tiny birds that live in the forest canopy, and, as the name implies, survive on nectar from tropical flowers. Scientists at the San Diego Zoo report they have managed to hatch half a dozen of their chicks in captivity, raising hopes that the birds will flutter back from the brink of extinction. VOA’s George Putic reports.
Video

Video Exhibit Brings Renaissance Master Out of the Shadows

The National Gallery of Art in Washington has raised the curtain on one of the most intriguing painters of the High Renaissance. Mostly ignored after his death in the early 1500s, Italian master Piero di Cosimo is now claiming his place alongside the best-known artists of the period. VOA’s Ardita Dunellari reports.

VOA Blogs