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USGS Suggests Connection Between Seismic Activity and Fracking
First time accepted submitter samazon writes "According to a recently proposed abstract by the United States Geological Survey, hydraulic fracturing, or more specifically the disposal of fracking wastewater, may be directly correlated to the increase in seismic activity in the midwest. Results of the paper will be presented on April 18th, but the language of the abstract seems to imply that there is a connection. After years of controversy regarding hydrofracking including ground water contamination and disclosure of chemical solutions, the results of the study, if conclusive, could influence the cost of natural gas due to increased regulations on wastewater disposal." The actual language of the abstract leaves a fair amount of wiggle room: "While the seismicity rate changes described here are almost certainly manmade, it remains to be determined how they are related to either changes in extraction methodologies or the rate of oil and gas production."
Another reason for some people to reinforce their belief that science is anti-business and that scientists should be dismissed, if not stopped.
They attributed quakes to Zeus and Hera fracking.
In Oklahoma, the rate of M >= 3 events abruptly increased in 2009 from 1.2/year in the previous half-century to over 25/year. This rate increase is exclusive of the November 2011 M 5.6 earthquake and its aftershocks.
A twenty-five-fold increase, that excludes the largest outlying event, in the number of earthquakes would seem to be statistically significant of something.
I got a catholic block.
No, for a number of reasons. Even if smaller quakes simply "relieved stress," preventing larger quakes, the Richter scale is logarithmic so it'd take many small quakes to prevent a large one. USGS agrees: http://earthquake.usgs.gov/learn/topics/megaqk_facts_fantasy.php
The earthquakes are all minor but groundwater being poisoned in areas without back up supplies is serious. They keep talking about how there's a layer of rock protecting the groundwater but the fracking shatters that layer of protective rock. It's hard to argue with tap water being flammable. Great we get 10 to 30 years of natural gas and the residents get to shower with bottled water for the next few hundred years. Some of the chemicals used are cancer causing so guess who gets stuck with that bill? Not the gas companies. If it's safe prove it's safe before you frack half the country. This got rammed through with zero oversight. Everyone can say who cares about the midwest but guess what that's where much of your food is grown. Also one of the hottest ares for potentially fracking is the very place New York City gets much of it's water from. Cheap gas may end up as very expensive water. This is about the rich getting richer, period. They were already getting plenty of gas out of the fields this is about getting 3X to 4X as much thus increasing profits. Who gets stuck with the environmental costs in the end? The tax payers. Which do we need more, water or natural gas? Well you can't raise corn and wheat or drink natural gas so I have to come down on the side of water. The gas companies don't care about groundwater because they make their money off gas and not groundwater. If they could charge a $100 a barrel for groundwater it'd be a very different story.
IIRC, two thirds of those quakes were within a half mile of drilling sites. Seems significant to me, anyway.
"Think about how stupid the average person is. Now, realise that half of them are dumber than that." - George Carlin
As opposed to what - the problem is solved, so let's decrease funding? The science is settled, so let's not study this anymore?
I swear, some people sound like they think everything should be funded via unicorn farts and rainbows. Yes, research costs money. Pay up, or end up in the dark ages. Of course, if that does happen, you'll find someone or something else to blame but your own shortsighted smugness that automatically equates every human endeavor with your own base motivation: more money.
Insightful my ass.
Those who can, do. Those who can't, sue.
Don't be silly. Fracture the crust? Are you insane? We can't drill that deep. The Crust is 50 MILES thick. We've NEVER directly sampled the mantle because it's not possible to drill that deep with current technology. We can't even drill 1/4 of the crust thickness. Maximum drilling depth is on the order of 5 miles or 1/10 the approximate crust thickness.
These are minor quakes, they are settlement and movement of sediment layers, not fault shifts. They happen anytime you drill at depth and push or pull material from the drill hole. They aren't anything to worry about, they've been happening for as long as we've been drilling (more than 100 years). I swear you east coasters feel a little shake and freak out.