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New Research Strengthens Link Between Shale Drilling And Earthquakes

Tyler Durden's picture




 

Submitted by Nick Cunningham via OilPrice.com,

A recent study from Cornell University finds a probable link between drilling activity and an increased frequency of earthquakes in Oklahoma. Published in the journal Science, the study indicates that the practice of injecting millions of gallons of wastewater underground after a well is hydraulically fractured may increase the occurrence of earthquakes.

Although scientists have yet to identify a concrete link between unconventional drilling and earthquakes, areas that have experienced an increase in oil and gas drilling have also seen an uptick in seismic activity. Oklahoma is currently the state with the highest number of magnitude 3.0 earthquakes for 2014.

“It's been a real puzzle how low seismic activity level can suddenly explode to make (Oklahoma) more active than California,” says Katie Keranan, the lead researcher of the study and geophysics professor at Cornell University.

A correlation between earthquakes and drilling have cropped up elsewhere, including Ohio, where regulators shut down several wells that were thought to have contributed directly to earthquakes.

As in previous cases, the latest Cornell study finds more culpability with injection wells rather than the fracking process itself. After a well is fractured, millions of gallons of wastewater flow back up the well.
Operators dispose of that wastewater by sending it to injection wells – the water is injected
underground in between impermeable layers of rock for long-term storage.

Ohio, in particular, has a large concentration of injection wells, and much of the wastewater from the thousands of fracked wells in places like West Virginia and Pennsylvania is trucked to Ohio for disposal. The injection wells are thought to be a contributor to earthquakes.

However, the Cornell study still does not find a conclusive and definitive link between injection wells and earthquake activity, a fact that the oil and gas industry was quick to point out. In any case, industry allies argue, places like Oklahoma and Ohio may have seen an increase in earthquake activity, but the relatively few instances pale in comparison to the thousands of injection wells used. For example, only four injection wells have been linked to earthquake activity, out of a total of 4,500 that have been drilled in Oklahoma.

Mike Terry, President of the Oklahoma Independent Petroleum Association (OIPA), doubts the veracity of the connection with earthquakes, and argues that wastewater disposal is not new to Oklahoma.

Disposal wells have been used in Oklahoma for more than half a century and have met and even exceeded current disposal volumes during that time. Because crude oil and natural gas is produced in 70 of Oklahoma’s 77 counties, any seismic activity within the state is likely to occur near oil and natural gas activity,” he said in a response to the Cornell study.

But although the report stops short of declaring a clear link between injection wells and earthquakes, the findings add to the growing body of evidence establishing that link. The research found that when migrating fluids run into fault lines, pressure can build up and contribute to the rupturing of a “critically stressed” fault line.

Cornell’s Katie Keranan says the results suggest that more monitoring is needed. “Earthquake and subsurface pressure monitoring should be routinely conducted in regions of wastewater disposal and all data from those should be publicly accessible,” Katie Keranan said. “This should also include detailed monitoring and reporting of pumping volumes and pressures.”

Predictably, the oil and gas industry is warning against any hasty moves to crack down on drillers. Mike Terry of OIPA cautioned against “a rush to judgment based on one researcher’s findings.”

That is because if the facts prove to be as damning as the research suggests, the industry could face stiffer regulations, which will increase costs, or in the worst case, curtail drilling activity.

In Ohio, regulators implemented several strict conditions to new permits, including requiring the installation of sensitive seismic monitoring equipment for all wells within three miles of a known fault line. Also, if a magnitude 1.0 earthquake occurs, drilling will be suspended while safety officials evaluate the area, and permanently halted if a link is found.

Oklahoma regulators have yet to apply such scrutiny. But the latest study will increase the pressure to do so.

 

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Mon, 07/07/2014 - 18:24 | 4933357 toady
toady's picture

My nephew is a fracker.

Damn regulators!

Mon, 07/07/2014 - 18:24 | 4933367 AlaricBalth
AlaricBalth's picture

My geological analysis has discovered massive shale oil deposits in, and around Washington DC. A vigorous drilling campaign should commence immediately.

It's for the future of our children.

Mon, 07/07/2014 - 18:27 | 4933378 Stackers
Stackers's picture

You cant even feel a 3.0 quake

Mon, 07/07/2014 - 18:35 | 4933413 Tulpa
Tulpa's picture

Good point.  According to the Wiki article on the Richter Scale, 3.0 is equivalent to the seismic shock wave from the 1995 OKC bombing, and about 1/1000 the energy of the 2011 Virginia earthquake that resulted only in some broken dishes, a few minor injuries, and threw the Washington Phallus out of whack.

Mon, 07/07/2014 - 22:22 | 4934147 juangrande
juangrande's picture

I remember hearing ( on Chuck Harder) that the OU geological school recorded 2 seismic shocks at the time of the OKC bombing.

Tue, 07/08/2014 - 07:33 | 4934750 DaddyO
DaddyO's picture

Articles like this are thought provoking...

Are you willing to give up flying, driving and all the plastic in the comforts of your home?

Peak oil? = Peak Luxury?

Look at the computer in front of you, how much oil to produce it?

Think people, think.

What's the alternative?

DaddyO

Mon, 07/07/2014 - 19:16 | 4933552 djsmps
djsmps's picture

You can feel a 4.6 quake from a long way away. We feel the OK quakes in Kansas.

Tue, 07/08/2014 - 00:52 | 4934442 Money Squid
Money Squid's picture

Why yes, yes you can. If you are at the epicenter and sitting still in your foreclosed home reading a book (if you can read) you can feel it. You might even feel a 2.0, but it would be a bit more difficult. It also depends on the soil/rock on which your crack shack is constructed.

Mon, 07/07/2014 - 19:00 | 4933511 Dublinmick
Dublinmick's picture

And yes it takes a village.

A 3.0 around sandstone or soft earth is a relatively mild event, however near a granite base it can certainly be felt.

Mon, 07/07/2014 - 21:13 | 4933956 Againstthelie
Againstthelie's picture

My nephew is a fracker.

You both should drink the poison he is injecting into the ground.

Mon, 07/07/2014 - 23:15 | 4934281 toady
toady's picture

Fuck that! You drink that shit!

My water comes from one of the purest sources in North America. Nothing but the best for my dog.

Mon, 07/07/2014 - 21:14 | 4933960 Canadian Dirtlump
Canadian Dirtlump's picture

This report seems to damn injection wells more than fracking. way to channel gawker, zerohedge.

Mon, 07/07/2014 - 18:23 | 4933361 buzzsaw99
buzzsaw99's picture

it isn't the fracking that causes the bigger ones it is wastewater disposal wells. they are very very deep and the water just drops right in because the formation is very porous. a lot of water, very deep.

Mon, 07/07/2014 - 18:29 | 4933387 Tulpa
Tulpa's picture

And as the article states, disposal wells have been used for decades in many other mining and hydrocarbon extraction activities with no earthquake increase.

Tue, 07/08/2014 - 13:57 | 4933394 buzzsaw99
buzzsaw99's picture

many millions of gallons at a depth of 20,000 feet? BOLLOCKS!

edit: link added http://finance.yahoo.com/news/study-shows-drilling-wastewater-causes-180...

Tue, 07/08/2014 - 08:33 | 4934873 Billy Sol Estes
Billy Sol Estes's picture

Go away with your thoughts that don't support the narrative!

I've been to many a conference and drilling workshop where guys in the field say the disposal wells are more to blame than fraking.

Fraking relieves pressure, disposal wells build pressure.

Mon, 07/07/2014 - 18:22 | 4933363 papaswamp
papaswamp's picture

You mean when you remove something from the ground , it then collapses ? Who would have thunk it?!

Mon, 07/07/2014 - 18:27 | 4933377 Tulpa
Tulpa's picture

Someone who is unfamiliar with the long history of mining that never produced earthquake epidemics, perhaps?

Mon, 07/07/2014 - 18:24 | 4933368 Zog the Bastiat
Zog the Bastiat's picture

Anecdotal & personal evidence is even stronger. After fracking in my area, you could feel little tremors every few weeks, bigger ones every few months. And the waterline for rural wells dropped drastically.

Mon, 07/07/2014 - 18:25 | 4933369 Tulpa
Tulpa's picture

"New Research Strengthens Link Between Shale Drilling And Earthquakes"

 

"although the report stops short of declaring a clear link between injection wells and earthquakes"

How can you strengthen a link if it does not exist?

Mon, 07/07/2014 - 18:43 | 4933437 djrichard
djrichard's picture

Honestly, let's let history be the judge.  Eventually history will figure out how to time travel and tell us what to do.  Until then, any authority is suspect.

Tue, 07/08/2014 - 00:46 | 4934435 Money Squid
Money Squid's picture

"New Research Strengthens Link Between Shale Drilling And Earthquakes"

If you stand right next to a drilling rig while it is drilling you can feel the ground vibrate. So, I guess its true that drilling causes earthquakes. So, before it was fracking causes earthquakes, now shale drilling causes earthquakes.

Mon, 07/07/2014 - 18:26 | 4933370 syntaxterror
syntaxterror's picture

more earthquakes = increased GDP = bullish

Mon, 07/07/2014 - 18:27 | 4933380 NOTaREALmerican
NOTaREALmerican's picture

To hell with the environment or the goddamn planet.  We need to emulate the Chinese.    What would confucius do (WWCD)? 

Mon, 07/07/2014 - 18:35 | 4933412 Totentänzerlied
Totentänzerlied's picture

Right now you can still kind of hear the anti-fracking crowd - if you listen, but as oil prices continue higher (and purchasing power and real income fall), the plebs will beg shale drillers to frack every last inch of the US. The environment is nice and all, but it doesnt get my SUV from my McMansion to Walmart. Just imagine how much we'll frack when the petrodollar dies.

Mon, 07/07/2014 - 18:46 | 4933449 BuddyEffed
BuddyEffed's picture

There'some truth to that, and from what readers hear at ZH can gather, the "earth will shake" for a lot of people, in one of several ways or another, as there are several active fault zones under stress in various local and not so local economic strata.

Mon, 07/07/2014 - 18:44 | 4933441 McMolotov
McMolotov's picture

Confucius say: Woman who douches with vinegar walks around with sour puss.

Mon, 07/07/2014 - 18:30 | 4933386 BuddyEffed
BuddyEffed's picture

The shock waves of the fracking blasts in strata normally stable and not seeing vibrations may be helping to trigger later shakes.  Plus the cracks formed in the immediate strata may be able to reach (lengthen) over time towards other nearby areas of strata that are under stress, compression, or tension and given some time those forces might release.  Plus introducing water and other lubricants down along those cracks would seem to add lubrication so that any strains or stresses that were borderline before might finally reach the straw that breaks the camels back so to say.  

Mon, 07/07/2014 - 18:31 | 4933397 Tulpa
Tulpa's picture

So the earthquake was going to happen anyway, all the wells do is time-shift it.

Mon, 07/07/2014 - 18:39 | 4933419 BuddyEffed
BuddyEffed's picture

Yes, just hope they don't time shift something large that wouldn't have been seen for some decades, hundreds, or thousands of years into the present.  Also, they may want to avoid fracking near the New Madrid areas, and any connecting finger faults to the main NM ones.

Mon, 07/07/2014 - 19:05 | 4933521 Dublinmick
Dublinmick's picture

The New Madrid is exactly where they frack, Arkansas, Oklahoma, Louisiana etc.

Mon, 07/07/2014 - 19:21 | 4933536 BuddyEffed
BuddyEffed's picture

Oh well, then it's probably good for a river to have the opportunity to run backwards every few hundred years or so.

Mon, 07/07/2014 - 20:29 | 4933771 snr-moment
snr-moment's picture

They fracked a 6.0 into many 1.0s

Figuring out how to save California in the process.

Awww Shit.  Stop the Fracking!

Mon, 07/07/2014 - 21:42 | 4934053 luckylogger
luckylogger's picture

100 thumbs up if possible.....

Great comment....

Tue, 07/08/2014 - 18:33 | 4937264 S.N.A.F.U.
S.N.A.F.U.'s picture

So you're saying instead of California abruptly sliding into the ocean in the distant future we can gently slide it into the ocean today?  Sounds good!

Mon, 07/07/2014 - 18:32 | 4933402 SIOP
SIOP's picture

I dont get it. The average depth of oil/gas wells here in Oklahoma is approx 5,000 ft. The typical depth of earthquakes here in Oklahoma is approx 16,000 ft. I'm not seeing a connection between the two.

But there is a geographical correlation and here's why.

When I worked for a large oil exploration company here in Oklahoma, I wrote software to search for "fault zones" because areas where the formations are broken up due to tectonic activity is also an attractive place to explore for and produce oil, in other words, oil companies drill in tectonically active areas because the deep formations are "pre-fracked" ! And so now people are finding a statistical correlation between drilling and earthquakes. tooo funny.

Mon, 07/07/2014 - 18:39 | 4933425 Escrava Isaura
Escrava Isaura's picture

SIOP

Would care to deliberate some more.

I found your comment interesting.


Mon, 07/07/2014 - 19:07 | 4933518 BuddyEffed
BuddyEffed's picture

Strata needs cracks and pores to store large amounts of oil.  Obviously oil is in between rocks down there.  There has to be some kind of gap for it.  Pores will only release any oil to flow if it is connecdted to some crack, otherwise it's trapped.  So we frack to crack and connect cracks.  Sedimentary layers without cracks and pores are uniform and won't hold much oil if any at all.  Natural cracks help, and are associated with strata that has broken and folded and churned some under the stresses and strains down there.

Tue, 07/08/2014 - 21:49 | 4938031 Escrava Isaura
Escrava Isaura's picture

BuddyEffed

Thanks

Mon, 07/07/2014 - 19:39 | 4933612 BuddyEffed
BuddyEffed's picture

Also for possible causation, consider that when you want something to come unstuck, an often successful strategy is to wiggle it.   Vibrating "wiggling" the deeper underground layers with fracking blasts could trigger those deeper things to wiggle free.

Mon, 07/07/2014 - 19:46 | 4933630 Bazza McKenzie
Bazza McKenzie's picture

Your glib, self-serving dismissal actually helps to explain what may be happening.

First, the article flags an INCREASED rate of earthquakes, so it is not a simple correlation of fracking locations with locations that already had high earthquake incidence.

Second, you make the point that "The typical depth of earthquakes here in Oklahoma is approx 16,000 ft".  Obvious question is that "typical" for earthquakes pre-fracking or post-fracking and has the proportion at various depths changed?  Likely you don't know the answer to that question.

Third, since you clearly state fracking is done in "tectonically active areas because the deep formations are "pre-fracked"".  Any reasonable person would acknowledge at least the possiblity that fracking in unstable areas will trigger geological events.

In seeking to rebut the case linking fracking to earthquakes, you have actually made the case.  Well done.

Mon, 07/07/2014 - 18:38 | 4933421 SWCroaker
SWCroaker's picture

In the 70s, everyone was freaked about the coming Ice Age.  (We are cyclically due).   The tentative idea that Co2 might, just maybe, serve as a poor greenhouse gas, and that industrialization might, just maybe, help stave off the coming Ice Age, was put forward by an unknown researcher, and latched onto by the policital machines of the time.

Earthquakes come when built-up stresses in the crust get released.  Fracking / injection wells seem to artifically trigger an early release of stresses in the earth's crust.    This is a problem?   Or is it the next politically correct way for mankind to eliminated severe earthquakes from this point forward?

Mon, 07/07/2014 - 18:47 | 4933450 djrichard
djrichard's picture

What would be the responsible thing to do?

Mon, 07/07/2014 - 22:11 | 4934113 nmewn
nmewn's picture

According to people who hate oil, retreat into caves, only venturing out to eat grass in the daytime for the rest of our lives, while subsidizing "green technology" billionaires who can afford to send Tesla S-Models & Fisker Roadsters driving employees around to collect our poop at night.

Apparently, its a kinder, gentler reverse Morlock-Eloi thingy ;-)

Mon, 07/07/2014 - 18:50 | 4933462 FieldingMellish
FieldingMellish's picture

How about something that links fracking and HFTs? It would be much more topical.

Mon, 07/07/2014 - 18:58 | 4933499 Dublinmick
Dublinmick's picture

Pumping acid and mercury into the ground near the New Madrid is a great idea. Progress is our most important product.

 

Mellish around here you are expected to have a general grip on the obvious, in most cases nobody will grab you by the hand and lead you to links. When you are told something here, just except it and move on.

Mon, 07/07/2014 - 19:00 | 4933514 Hulk
Hulk's picture

So quit building your houses on stacked rock foundations and stfua, jeebus...

Mon, 07/07/2014 - 19:08 | 4933531 Dublinmick
Dublinmick's picture

I just got phone call with a computer voice indicating that if I wanted to do the right thing and open more off shore drilling and fracking, press one and a letter will be sent to the interior department on my behalf. There was no number to press if you wanted them prosecuted over it.

Mon, 07/07/2014 - 19:22 | 4933562 UrbanBard
UrbanBard's picture

Some facts about earthquakes. Below 4.0, quakes  are barely noticeable. These minor earthquakes may feel like a dump truck is passing on the road outside. If you feel them, you forget about them quickly. But, once you have been sensitized, you notice them more often.

There have been no major quakes in Oklahoma. The largest was a moderate quake of 5.6 on Nov  06, not far from the eight recent minor (4.0 - 4.6) quakes in Logan county. This is in the center of the state, no where near the only real fault line (Meers) in the southwest part of the state. These quakes would be noticeable, with little to no damage.

There have been more quakes recently, but it's hard to tell what the cause is. Even if Fracking is producing these harmless quakes, that may be the price you pay for local prosperity.

Mon, 07/07/2014 - 20:42 | 4933817 PoliticalRefuge...
PoliticalRefugeefromCalif.'s picture

If it bleeds, it leads...

  Yeah just try and sell that "it's the price you pay for local prosperity" line to the permanently distraught hand wringers at Cornell.
 I was born in Oklahoma and I can tell you that Oklahoma has a lot more to worry about than earthquakes that are less noticeable than of one of Oprah's farts.

Mon, 07/07/2014 - 19:34 | 4933605 NoWayJose
NoWayJose's picture

Let's see - a big liberal university located in a state currently fighting fracking releases a report for carefully selected states that might or might not show a link between fracking and earthquakes then concludes that more study is needed (undoubtedly funded by big grants to a major liberal university). Could it have turned out any different?

Tue, 07/08/2014 - 00:59 | 4934456 Money Squid
Money Squid's picture

hydraulically induced earthquakes in contributing to global warming. When the earth shakes the atmosphere heats up causing super typhoons to strike Japan.

I just wish our global leaders would fly around the world in their fleet of private jets and limos constantly trying to raise money and lecture us on how carbon emissions are causing global warming.

Mon, 07/07/2014 - 19:39 | 4933616 NoWayJose
NoWayJose's picture

North Dakota has had six minor earthquakes - since 1915!

Mon, 07/07/2014 - 20:44 | 4933827 PoliticalRefuge...
PoliticalRefugeefromCalif.'s picture

Let's hear it for the Fighting Sioux!!

Libs won't leave anything alone..

Mon, 07/07/2014 - 20:10 | 4933696 Dublinmick
Dublinmick's picture

Sure

 

http://www.csmonitor.com/Environment/2014/0703/What-s-causing-all-those-...

 

A dramatic jump in the number of earthquakes in Oklahoma to a rate never seen there by scientists before, appears to be caused by a small number of wells where wastewater associated with oil and gas production is injected into the ground, a study released on Thursday said.

Just a few of these so-called disposal wells, operating at very high volumes, "create substantial anthropogenic seismic hazard," according to findings from Cornell University researchers published in the journal Science.

Earthquake activity in Oklahoma has skyrocketed in recent years, and the U.S. Geological Survey recently warned that the state faces increasing risk of more potentially damaging earth-shaking activity.

Mon, 07/07/2014 - 20:19 | 4933723 Roger Knights
Roger Knights's picture

If you can't get enough of this controversy, here's a WUWT thread with 109 comments:

http://wattsupwiththat.com/2014/07/05/quakes-fracking-hysteria-and-energ...

Mon, 07/07/2014 - 20:42 | 4933815 Jack Burton
Jack Burton's picture

The physics involved seem to point to this being self evident that fracking will cause earth quakes. The up side is that they will be very small and do no damage. Or this is what I am led to believe by yhe industry.

Mon, 07/07/2014 - 21:20 | 4933986 luckylogger
luckylogger's picture

Who cares????

3.0 earth quakes are a joke..


Mon, 07/07/2014 - 22:27 | 4934157 Midnight Rider
Midnight Rider's picture

It's the flaming kitchen sinks and toxic bathing water than causes the damage.

Tue, 07/08/2014 - 00:48 | 4934438 Money Squid
Money Squid's picture

"Only you can prevent faucet fires" - Smokey Bear

Tue, 07/08/2014 - 09:53 | 4935088 Incubus
Incubus's picture

My car runs on petrol.  Why can't I?

 

 

Tue, 07/08/2014 - 00:42 | 4934429 Money Squid
Money Squid's picture

The physics involved will demonstrate that hydraulic fracturing causes fractures by injecting sufficient volume of fluid at pressures exceeding the fracture gradient. Microseismic monitoring will show the location and magnitude of the fracture event in the subsurface. The used fluid is trucked to an offsite location where it is injected into the subsurface in disposal well. I have not yet seen, and have not looked, at the injection history or profiles (or gradient) for the disposal wells to know if the disposal wells are injecting over the fracture gradients and if the disposal wells are completed into a depleted zone.

So, yes, microquakes are detected, and can be easily monitored, when a frac job is done, but the issue seems to be larger earthquakes in proximity to certain disposal wells. there is no seismicity associated with many disposal wells. The injection history should be evaluated in connection with local tectonic stresses to better evaluate a potential relationship.

The rest is just hype.

Mon, 07/07/2014 - 20:49 | 4933855 dirty belly
dirty belly's picture

My tribe is from the Oklahoma territory.  See this:

Record Number of Oklahoma Tremors Raises Possibility of Damaging Earthquakes

http://earthquake.usgs.gov/regional/ceus/products/newsrelease_05022014.php

And this:

1 Day, Magnitude 2.5+ Worldwide

http://earthquake.usgs.gov/earthquakes/map/

Everyday there is a quake in Oklahoma, and since I am from there, I find the recent 'rash' of earthquakes interesting.

You must also take into account this:

Thanks to Active New Madrid Fault Zone, Midwest Earthquake Risk Still Looms

http://www.weather.com/news/science/thanks-active-new-madrid-fault-zone-...

Something really big is happening between

Puerto Madero, Mexico, Little Sitkin Island, Alaska and Indonesia.

Just in case, stock some extra containers of water.

Mon, 07/07/2014 - 20:52 | 4933875 PoliticalRefuge...
PoliticalRefugeefromCalif.'s picture

  Life has always suffered trade offs, I see no reason to suspend reality for this case- there could be a correlation but really no one knows the balance of benefit vs long term damage.

  At the moment I am more concerned with the Japanese situation than the Oklahoma situation- or maybe my priorities are all out of whack.

 

Mon, 07/07/2014 - 21:01 | 4933908 PoliticalRefuge...
PoliticalRefugeefromCalif.'s picture

  Actually depleting the Ogallala aquifer and all the other groundwater aquifers have probably contributed as well, I doubt West Texas where I grew up has near the groundwater it did in the fifties when I lived there.

  They have been sucking that thing dry for decades and I don't know if you can really recharge them or not- that is if we eventually get rainfall.  

 

Mon, 07/07/2014 - 21:18 | 4933974 luckylogger
luckylogger's picture

Another try at making illegal or unduly expensive the best fuel in the world?????

Good fuking luk.....
For you folks that cannot let the peak oil deal go, think about this...
Generally a typical reservoir is played out at 10% recovered...
A few months ago, Statoil put on a presentation in Norway where they figured by 2020 they will be able to extract 70% from a typical vertically drilled well.....
Now think about all the reservoirs that have only given up 10% of their oil... in maybe Sudi arabia or the gulf or alaska or russia or.....
Learn to deal with oil...
We are at peak oil price but not even close to peak oil production, that will come sometimes around 2500 if no other fuel discovered and we regress into the dark ages again...
Get a fuking grip and find out the truth!!!!!!!!!!!
The enviro idiots should quit hiring lawyers and start hiring engineers...
The stone age did not end with the end of stones...
Oil will not end with the end of oil....
Get used to it, cause it is true and PROVEN....

Mon, 07/07/2014 - 21:19 | 4933979 Reaper
Reaper's picture

Is fracking in Yellowstone causing earthquakes there? http://www.seis.utah.edu/req2webdir/recenteqs/Maps/Yellowstone.html

Tue, 07/08/2014 - 00:08 | 4934379 Gusher
Gusher's picture

I'm not claiming to know the answer, but there are no earthquakes in North Dakota. And there is some evidence that Oklohoma earthquakes are related to drought folowed by a lot of rain.

Tue, 07/08/2014 - 00:55 | 4934453 Money Squid
Money Squid's picture

Filling reservoirs can cause earthquakes. It can be the shear weight of the body of water, or the increased subsurface pressure from the increased head of the water infiltrating down.

Tue, 07/08/2014 - 11:54 | 4935531 Cthonic
Cthonic's picture

Unfortunately, in OK, most of the injection wells drill right through major aquifers.  The swarms could be a combination of injection, as well as overpumping from the overlying aquifers (for example the massive Garber-Wellington under OKC).

earthquakes

http://earthquake.usgs.gov/regional/ceus/products/OKeqanimation.php

aquifers

https://www.owrb.ok.gov/maps/pdf_map/GW%20Aquifers.pdf

injection wells

http://goo.gl/s7ATPw

oil and gas wells

http://goo.gl/fbx7jr

Tue, 07/08/2014 - 03:08 | 4934571 Laowei Gweilo
Laowei Gweilo's picture

my safely triggering smaller earthquakes on fault lines, we can avoid these fault lines becoming worse and over time becoming a big earthquake

 

it'd be a hilarious irony for these reports to lead fracking to be used as pro-safety and anti-earthquake control

Tue, 07/08/2014 - 03:31 | 4934584 nathan1234
nathan1234's picture

I heard there was a lot of shale oil in Washington DC

Tue, 07/08/2014 - 05:48 | 4934661 Antihuman
Antihuman's picture

You know, I liked the new BSG. The episode where the fuel refinery ship goes on strike was great. 

Tue, 07/08/2014 - 09:25 | 4935005 Ghostdog
Ghostdog's picture

Whoda thought that disrupting the ground below could disrupt the ground below?

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