Sentences with phrase «of fracking fluids»

A separate study at Cornell University recently identified yet another mechanism increasing the risk of carrying contaminants from the path of the fracking fluids into clean groundwater reservoirs: the same properties that make the fluids effective at fracking help fracking fluids dissolve contaminants like heavy metals that up until now have clung safely to soils in the form of colloids.

Investigating the Possible Effects of Fracking Fluids on Earthquakes

Before production can commence, the well must be «completed» by removal of the fracking fluids, which contain gas that can escape to the air.

The benefit of addressing public concern about the composition of the fracking fluids «outweighs the restriction on company action, the cost of reporting, and any intellectual property value of proprietary chemicals.»

In 2011, in response to growing public concern about the possible environmental and human health effects of fracking wastewater, Pennsylvania's Department of Environmental Protection requested that the discharge of fracking fluids and other unconventional oil and gas wastewater into surface waters be prohibited from central water - treatment facilities that release high salinity effluents.

Rozell said that the recycling of fracking fluid is helping to reduce the amount of water produced by each natural gas well, but the fluid can usually only be reused once.

It can then be sucked back out as the natural gas is extracted from the reservoir, meaning that there is a virtually complete recovery of the fracking fluid; water - based methods have roughly a 50 percent recovery rate.

During offshore fracking, a significant amount of fracking fluid returns to the surface and is either discharged into the ocean or transported for onshore ground injection.

In the past two years alone, a series of surface spills, including two blowouts at wells operated by Chesapeake Energy and EOG Resources and a spill of 8000 gallons of fracking fluid at a site in Dimock, Pa., have contaminated groundwater in the Marcellus Shale region.

During the fracking process, millions of gallons of fracking fluid — a mixture of water, sand and toxic chemicals — are injected into the ground to break up the shale and release natural gas.

Some of the fracking fluid remains underground where it could potentially contaminate groundwater in the future, but much of it is brought back to the surface as wastewater.

Not exact matches

Further, the Duke study did not detect fracking fluids in any of the wells tested.

But perusing newspapers from towns where fracking is going on reveals how the issue refuses to die, with headlines like «Fears of Tainted Water Well Up in Colorado,» «Collateral Damage: Residents Fear Murky Effects of Energy Boom,» and «Worker Believes Cancer Caused by Fracking Fluids» appearing refracking is going on reveals how the issue refuses to die, with headlines like «Fears of Tainted Water Well Up in Colorado,» «Collateral Damage: Residents Fear Murky Effects of Energy Boom,» and «Worker Believes Cancer Caused by Fracking Fluids» appearing reFracking Fluids» appearing regularly.

Fleets of trucks have to make hundreds of trips to carry the fracking fluid to and from each well site.

Though the fluids were natural and not the byproduct of drilling or hydraulic fracturing, the finding further stokes the red - hot controversy over fracking in the Marcellus Shale, suggesting that drilling waste and chemicals could migrate in ways previously thought to be impossible.

If they survive, then it will be a good demonstration that fracking is unlikely to harm New Yorkers, even if some of the fracking «fluid» seeps into our underground aquifers.

State Comptroller Thomas DiNapoli says Tuesday that Cabot has agreed to publicly disclose its policy and procedures for eliminating or minimizing the use of toxic substances in fracking fluids.

«It's absolutely unacceptable that the governor didn't prohibit all forms of hydraulic fluid fracking.»

They shared stories and fears of water being contaminated by fracking fluid; the political class reeled.

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.

As the gas comes up the well so does the fracking fluid, along with volumes of brine so salty it is hazardous.

«By measuring naturally occurring ammonium and iodide in numerous samples from different geological formations in the Appalachian Basin, including flowback waters from shale gas wells in the Marcellus and Fayetteville shale formations, we show that fracking fluids are not much different from conventional oil and gas wastes,» said Jennifer S. Harkness, lead author of the study and a PhD student at Duke's Nicholas School of the Environment.

«It's not only fracking fluids that pose a risk; produced water from conventional, or non-fracked, oil and gas wells also contains high levels of radium, which is a radioactive element.

Previous studies have shown that fracking fluids contain high levels of salts, barium and radioactive elements, in addition to human - made chemicals added in the process of hydraulic fracturing.

Both fracking and wastewater injections can increase the fluid pressure in the natural pores and fractures in rock, or change the state of stress on existing faults, to produce earthquakes.

EPA officials have repeatedly said that disclosure of the fluids used in fracking — something that would be required if the bill being debated in Congress were passed — would enable them to investigate contamination incidents faster, more conclusively and for less money.

The fracking process uses high - pressure injections of fluid to break apart rock and release trapped oil and natural gas.

California officials have ordered an emergency shut - down of 11 oil and gas waste injection sites and a review more than 100 others in the state's drought - wracked Central Valley out of fear that companies may have been pumping fracking fluids and other toxic waste into drinking water aquifers there.

In the 121 - page draft report released today, EPA officials said that the contamination near the town of Pavillion, Wyo., had most likely seeped up from gas wells and contained at least 10 compounds known to be used in frack fluids.

Some of the findings in the report also directly contradict longstanding arguments by the drilling industry for why the fracking process is safe: that hydrologic pressure would naturally force fluids down, not up; that deep geologic layers provide a watertight barrier preventing the movement of chemicals towards the surface; and that the problems with the cement and steel barriers around gas wells aren't connected to fracking.

The upshot is a growing — albeit incomplete — list of preferred chemicals that companies such as Apache can choose from as they design their fracking fluids.

Most of the drill sites flooded had already been fracked, and were actively producing oil or gas — so chemicals added to fracking fluids should not have been on site.

Then, in 2011, a congressional investigation found that in fact between 2005 and 2009, 12 companies had injected 32 million gallons of diesel fuel or fracking fluids containing diesel fuel in wells in 19 states.

Investigations by The New York Times last winter revealed that sewage - treatment plants processing fracking wastewater are discharging radioactive fluid into public waterways, in some cases upstream of intake sites for drinking water.

A range of hydrocarbons showed up in the deep wells, as did some synthetic organic chemicals associated with fracking fluids and drilling activities.

But according to a panel of geologists at the AAAS Annual Meeting, the culprit isn't hydraulic fracturing, or «fracking,» in which geologists crack open subsurface rocks to extract oil and gas; instead, it's the processes associated with pumping wastewater and other fluids back into the ground.

Fracking has already drawn considerable scrutiny from environmental groups, unhappy homeowners, and teams of lawyers who blame the drilling method for polluting pristine rivers, turning bucolic farmlands into noisy industrial zones, and leaking enough methane to make ordinary tap water as flammable as lighter fluid.

Liquefied petroleum gas (LPG) has a number of advantages over the chemical - laced water typically used as a fracking fluid.

Afterwards, companies need to pump out the fracking fluids, releasing bubbles of dissolved gas as well as burps of early gas production.

A bill now under consideration on Capitol Hill would grant the EPA oversight of fracking and force drilling companies, which are currently exempt from portions of the Clean Water Act, to disclose the chemicals they use in fracturing fluids.

The risk of human - made earthquakes due to fracking is greatly reduced if high - pressure fluid injection used to crack underground rocks is 895m away from faults in the Earth's crust, according to new research.

In the future, they say, drillers should take account of such risks, especially when they fail to recover fracking fluids.

Research lead author Miles Wilson, a PhD student in Durham University's Department of Earth Sciences, said: «Induced earthquakes can sometimes occur if fracking fluids reach geological faults.

Typically, fracking involves injections into impermeable rock layers that inhibit the spread of fluid and increase pore pressure.

They looked both at wells used for enhanced oil recovery — in which fluid is injected to flush lingering oil from a depleted reservoir — and at those used to dispose of wastewater from conventional oil and gas extraction or from hydraulic fracturing (fracking).

Their discovery could aid secure fracking — in which rocks below ground are split with high - pressure fluids — or extraction of methane gas from deep coal beds.

Hydraulic fracturing, or fracking, is a method of hydrocarbon recovery that uses high - pressure injections of fluid to break apart rock and release trapped oil and natural gas.

The report explains that along with natural gas, production wells in the Azle area of the NEGF can also bring to the surface significant volumes of water from the highly permeable Ellenburger Formation — both naturally occurring brine as well as fluids that were introduced during the fracking process.

Scientists don't know all of the hormone - like chemicals in fracking fluid yet, Linden notes.

And that is an underestimate of the amount of brine, fracking fluid and other contaminated water that flows back up a well along with the natural gas or oil, because it is based on incomplete data from state governments gathered in 2007.