Sentences with phrase «of fracking fluid»

«While restricting the disposal of fracking fluids to the environment was important, it's not enough,» he said.

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

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.

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.

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.

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.

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.»

Scientists review what's known about the fluids in ACS» journal Environmental Science & Technology and conclude that a comprehensive assessment of potential risks requires full disclosure of fracking fluid contents.

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.

Investigating the Possible Effects of Fracking Fluids on Earthquakes

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.

If the investigation documents the first case of fracking fluid seeping into groundwater directly from gas wells, drillers may be forced to abandon shallow deposits — which wouldn't affect Marcellus wells.

Gas companies that use the hydraulic fracturing process - a drilling technique that uses millions of gallons of water, combined with a fair amount of chemicals, to crack shale formations and extract natural gas - are exempt from the Safe Drinking Water Act, unless they use diesel as part of the frack fluid.

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.

As the Halliburton site notes, 99.5 % of fracking fluids is water and sand (the sand is carried into fractures, to keep them open and release the 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.