Sentences with phrase «disposal wells»

Scientific studies have linked the majority of this increased activity to wastewater injection in deep disposal wells in several locations.

The current regulatory framework for wastewater disposal wells was designed to protect drinking water sources from contamination and does not address earthquake safety.

It was only after deep injection disposal wells used to house fracking's toxic wastewater went into operation that the earthquakes started.

The rapid filling of underground disposal wells can cause earthquakes.

The energy industry has its own category, Class 2, which includes disposal wells and wells in which fluids are injected to force out trapped oil and gas.

The more oil companies frack and drill, the more wastewater they inject into disposal wells near active faults, which can trigger damaging earthquakes.

«Given the large number of disposal wells in the U.S., it is critical for further investigation into the potential human and environmental health impacts.»

Goodnight Midstream, LLC will be adding five new saltwater disposal wells and 50 miles of produced w...

The quake was one of the strongest ever to hit the state and prompted its oil and gas regulator, the Oklahoma Corporation Commission, to order 37 disposal wells shut in a 725 - square - mile (1,878 - sq - km) area around Pawnee.

And so when you have 1,000 disposal wells operating at the same time, you start asking questions like, «At this point right here I'd like to know what happens when we have monthly averages of what they injected.»

According to the newspaper Tulsa World, Oklahoma boasts — if that's even the right word — some 3,200 active disposal wells that pumped a combined 1.1 billion barrels of wastewater into the ground in 2013, an increase of about 35 percent over 2010.

The number of earthquakes within central and eastern United States has increased dramatically over the past few years, coinciding with increased hydraulic fracturing of horizontally drilled wells, and the injection of wastewater in deep disposal wells in many locations, including Colorado, Oklahoma, Texas, Arkansas and Ohio.

More than 60 % of these quakes are linked to hydraulic fracture, about 30 - 35 % come from disposal wells, and only 5 to 10 % of the earthquakes have a natural tectonic origin, Atkinson said.

«It may be, however, that more earthquakes are being induced in Oklahoma because of an increase in disposal well operations and, indeed, research is going on now to investigate this possibility,» McGarr says.

She says she also received pushback from administrators at her university who were not convinced that a link between disposal wells and quakes could be demonstrated.

When Andrew Barbour of the U.S. Geological Survey and colleagues examined new injection data from nearby disposal wells in Osage County, they found a significant increase in injection rates in the years leading up to the Pawnee mainshock.

After using hydrogeologic models with the seismic data, Keranen and her colleagues concluded that four disposal wells southeast of Oklahoma City likely caused the Jones swarm, a group of earthquakes that accounted for 20 percent of seismicity in the central and eastern U.S. between 2008 and 2013.

Nor does the new research explain why large areas of the country — including North Dakota, the Gulf Coast, and the Michigan Basin — have experienced few earthquakes despite having disposal wells with high injection rates.

In South Florida, 20 of the nation's most stringently regulated disposal wells failed in the early 1990s, releasing partly treated sewage into aquifers that may one day be needed to supply Miami's drinking water.

Drilling produces copious amounts of waste, burdening regulators and demanding hundreds of additional disposal wells.

Instead, the increased risk for seismicity is more strongly linked with the subsequent injection of the wastewater from fracking and other oil - extraction processes into massive disposal wells that are thousands of feet underground.

The new rules require oil and gas companies to check local seismic data from the U.S. Geological Survey before opening a new waste disposal well.

On average, about 10 barrels of brine are produced with each barrel of crude oil.20 Once separated from the oil, brine typically is returned to the underground formation it came from (or a similar formation) via disposal wells managed under EPA Class II Underground Injection Control (UIC) regulations.

(And in the first articles in my series about injection disposal wells I cited several other cases in Ohio and Florida where it happened through natural pathways).

«This research opens new possibilities for the operation of wastewater disposal wells in ways that could reduce earthquake hazards,» Shirzaei said, in the release.

Although it has long been known that the injection of wastewater into disposal wells can trigger earthquakes by increasing pore pressure and destabilizing fault lines, rarely has fracking itself been identified as the source of tremors.

One mystery that the researchers puzzled over was why the seismicity only appeared to be associated with one saltwater disposal well, as there are more than 200 such wells active in the Barnett Shale production region.

Recycling produced water and reusing it for hydraulic fracturing and / or agricultural use provides more water for everyone's use, while eliminating the need for disposal wells.

Since then, the state has asked that more than 600 disposal wells operating in quake - prone areas cut injection volume by 40 percent below 2014 levels.

Scientists have tied the quakes to the injection of saltwater, a normal byproduct of oil and gas drilling, into deep disposal wells and underground caverns.

Oklahoma has been putting new restrictions on some of its thousands of disposal wells for more than a year to curb seismic activity.

It also asked the EPA to help shut disposal wells in a 211 square - mile (546.49 - sq - km) area of Osage County because the OCC lacked jurisdiction there.

«There may be a link between earthquakes and disposal wells, but we... still don't know enough about how wastewater injection impacts Oklahoma's underground faults,» said OKOGA President Chad Warmington, Reuters reported.

The Oklahoma Geological Survey has determined that the majority of recent earthquakes in central and north - central Oklahoma are very likely triggered by the injection of produced water in disposal wells.»

In turn, depending on the opposition and what Valverde feels suits the players at his disposal best, Barca have a lot of quality in the squad and it would be a surprise to not see them competing for major honours this season regardless of whether or not they were able to land all of their top targets this summer.

The more discipline tools you have at your disposal the better.

Moreover, scientists suspect that the injection of used fracking fluid into deep disposal wells may have triggered dozens of recent small earthquakes in northeastern Ohio and north Texas.

Experts have not yet tied the quake to oil and gas production, but the epicenter is near wastewater disposal wells, structures that have been implicated in earlier quakes in the state.

The U.S. Army shut down the disposal well that same year.

The OGS formally declared in April 2015 that disposal wells were triggering its quakes.

The team also collected data on nearby saltwater - disposal wells and built a 3 - D model to simulate pressure from injection wells and estimate how it would move through underground rock.

«The OGS considers it very likely that the majority of recent earthquakes, particularly those in central and north - central Oklahoma, are triggered by the injection of produced water in disposal wells,» it wrote in a statement.

Atkinson and her colleagues compared the relationship of 12,289 fracking wells and 1236 wastewater disposal wells to magnitude 3 or larger earthquakes in an area of 454,000 square kilometers near the border between Alberta and British Columbia, between 1985 and 2015.

«It had previously been believed that hydraulic fracturing couldn't trigger larger earthquakes because the fluid volumes were so small compared to that of a disposal well,» Atkinson explained.

The Pawnee earthquake occurred in a region with active wastewater disposal wells, and is potentially the largest such induced earthquake to have occurred in Oklahoma so far, write University of Oklahoma seismologists Xiaowei Chen and Norimitsu Nakata in their preface to the section.