Sentences with phrase «in hydraulic fracturing fluid»

More on Fracking: Hydraulic Fracturing For Natural Gas Development Gets Added Regulatory Scrutiny US Congress May Undo Cheney's «Fracing» Exemption Tracer In The Hydraulic Fracturing Fluid: Accountability For...

The chemicals used in hydraulic fracturing fluid are considered proprietary, and the magnitude and frequency of water - contamination events are not well - documented.

Not exact matches

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.

That surge has coincided in time and place with the boom in unconventional oil and gas extraction such as hydraulic fracturing, or «fracking,» in which high - pressure fluid is injected into the ground to break up the underlying rock and release trapped gas or oil.

Other human activites linked to seismic activity include hydraulic fracturing, in which a water mixture gets pumped underground to break up rocks and release gas, and fluid withdrawal, which can refer to the withdrawal of oil and gas, groundwater or hot water / steam for geothermal power, the USGS says.

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.

Even in a seemingly implausible accidental - release scenario in which all of a well's hydraulic fracturing fluid and untreated wastewater were discharged directly into surface waters for the lifetime of the well, shale - gas electricity had a lower lifetime human toxicity impact, or HTI, than coal electricity, according to the study.

Of particular concern were compounds called adamantanes, a natural hydrocarbon found in gas that can be used to fingerprint its origin, and 2 - BE, listed as a common fracturing fluid in the EPA's 2004 research report on hydraulic fracturing.

«The presence of synthetic compounds such as glycol ethers... and the assortment of other organic components is explained as the result of direct mixing of hydraulic fracturing fluids with ground water in the Pavillion gas field,» the draft report states.

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 — or hydraulic fracturing — is a process in which rocks are deliberately fractured to release oil or gas by injecting highly pressurised fluid into a borehole.

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).

Modeling changes in the observed harmonic frequencies indicates that the spectral characteristics of seismic data can provide important information about hydraulic fracture geometry and fluid pressure at depth, leading to important insights into subglacial hydrologic processes.

When hydraulic fracturing or «fracking» to access unconventional oil and gas reserves was a hot topic in the fossil fuel industry, Ryerson was tapped to lead a team to develop GEOS — a dynamic computational rock mechanics and hydrologic tool — that can model facture propagation, resulting seismic signals and pressure - driven fluid flow through a rock mass.

However, other mechanisms such as fluid withdrawal, enhanced oil recovery, or hydraulic fracturing processes can also result in induced earthquakes.»

In work that offers insight into the magnitude of the hazards posed by earthquake faults in general, seismologists have developed a model to determine the size of an earthquake that could be triggered by the underground injection of fluids produced as a by - product of hydraulic fracturinIn work that offers insight into the magnitude of the hazards posed by earthquake faults in general, seismologists have developed a model to determine the size of an earthquake that could be triggered by the underground injection of fluids produced as a by - product of hydraulic fracturinin general, seismologists have developed a model to determine the size of an earthquake that could be triggered by the underground injection of fluids produced as a by - product of hydraulic fracturing.

The injection of the hydraulic fracturing fluids creates channels for flow in the formations (often shale formations), allowing methane and other hydrocarbon gases and liquids in the formation to migrate to the production well.

According to the Penn State Marcellus Center for Outreach and Research, during the first half of 2013 in the Marcellus shale play, 90 percent of the more than 14 million barrels of produced fluids from fracturing was reused.12 That represents a significant savings in the amount of new water needed for hydraulic fracturing elsewhere, and illustrates the industry's focus on environmental issues and efforts to reduce the impacts of energy development on resources and communities.

The shale energy surge also is spurring innovation: waterless hydraulic fracturing fluid, methods to decontaminate and recycle water used in fracking and more.

Ohio is in the final stages of making an Exxon trojan horse on hydrofracking into state law, and it appears that the American Legislative Exchange Council (ALEC) connected Exxon's lawyers with co-sponsors of Ohio Senate Bill 315: at least 33 of the 45 Ohio legislators who co-sponsored SB 315 are ALEC members, and language from portions of the state Senate bill is similar to ALEC's «Disclosure of Hydraulic Fracturing Fluid Composition Act.»

Three company spokesmen and a regulatory official said in separate interviews with ProPublica that as much as 85 percent of the fluids used during hydraulic fracturing is being left underground after wells are drilled in the Marcellus Shale, the massive gas deposit that stretches from New York to Tennessee.

The result is a 60 - page Watershed Plan [5](PDF) that dictates that Genesis will only use «green» hydraulic fracturing fluids, will reveal the chemical makeup of those fluids and will inject a tracer along with those fluids so any alleged contamination in the area can be quickly linked to its source.

The method combines a new form of horizontal drilling with hydraulic fracturing — more commonly known as fracking GThe process blasts open fissures in underground shale - rock formations by injecting a high pressure combination of fluids, chemicals and proppants causing the fossil fuel to flow to the production well.