Sentences with phrase «deep well injection»

If you want to understand what's happening with fracking, deep well injection, and seismic events, here's a good primer from The Grumpy Geophysicist...

Deep well injection takes place in 32 states, from Pennsylvania to Michigan to California.

Not exact matches

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.

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.

While most scientists agree that the surge has been triggered by the injection of wastewater from oil and gas production into deep wells, some have suggested these quakes are natural, arising from faults in the crust that move on their own every so often.

USGS scientists have found that at some locations the increase in seismicity coincides with the injection of wastewater in deep disposal wells.

At the moment, sewage from hotels and resorts is generally pumped into deep - injection wells 90 meters (about 300 feet) below ground level, sometimes straight into undersea caves.

Although LDEO scientists are not saying that the pumping caused the quakes, injection fluids have been implicated in other strike - slip earthquakes close to deep - injection wells.

However, some intraplate faults have experienced increased seismicity in recent years, likely due to deep injection wells used for wastewater disposal.

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.

When injection wells intersect with fracked wells and abandoned wells, the combined effect is that many of the natural protections assumed to be provided by deep underground geology no longer exist.

According to data provided by states to the EPA, deep well operators have been caught exceeding injection pressure limits more than 1,100 times since 2008.

The EPA requires that Class 1 and 2 injection wells be drilled the deepest to assure that the most toxic waste is pushed far below drinking water aquifers.

The collection wells and trenches are designed to remove contaminated ground water by drainage or active pumping and the injection wells are designed to flush the alluvial aquifer with clean water from deeper wells.

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

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They said it was «very likely» that several thousand weak to moderate earthquakes in recent years were triggered by deep - earth injection of water extracted from the ground as thousands of wells have been drilled into shale oil and gas deposits.

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

electric power plants are: (1) survey and assess the capacity, cost, and location of potential depleted gas and oil wells that are suitable CO -LCB- sub 2 -RCB- repositories (with the cooperation of the oil and gas industry); (2) conduct research on the feasibility of ocean disposal, with objectives of determining the cost, residence time, and environmental effects for different methods of CO -LCB- sub 2 -RCB- injection; (3) perform an in - depth survey of knowledge concerning the feasibility of using deep, confined aquifers for disposal and, if feasible, identify potential disposal locations (with the cooperation of the oil and gas industry); (4) evaluate, on a common basis, system and design alternatives for integration of CO -LCB- sub 2 -RCB- capture systems with emerging and advanced technologies for power generation; and prepare a conceptual design, an analysis of barrier issues, and a preliminary cost estimate for pipeline networks necessary to transport a significant portion of the CO -LCB- sub 2 -RCB- to potentially feasible disposal locations.

The research needs that have high priority in establishing the technical, environmental, and economic feasibility of large - scale capture and disposal of CO -LCB- sub 2 -RCB- from electric power plants are: (1) survey and assess the capacity, cost, and location of potential depleted gas and oil wells that are suitable CO -LCB- sub 2 -RCB- repositories (with the cooperation of the oil and gas industry); (2) conduct research on the feasibility of ocean disposal, with objectives of determining the cost, residence time, and environmental effects for different methods of CO -LCB- sub 2 -RCB- injection; (3) perform an in - depth survey of knowledge concerning the feasibility of using deep, confined aquifers for disposal and, if feasible, identify potential disposal locations (with the cooperation of the oil and gas industry); (4) evaluate, on a common basis, more» system and design alternatives for integration of CO -LCB- sub 2 -RCB- capture systems with emerging and advanced technologies for power generation; and prepare a conceptual design, an analysis of barrier issues, and a preliminary cost estimate for pipeline networks necessary to transport a significant portion of the CO -LCB- sub 2 -RCB- to potentially feasible disposal locations.

The USGS concurs that fracking injection wells may be the cause of earth quakes up to mag 3: http://earthquake.usgs.gov/research/induced/ «The increase in seismicity has been found to coincide with the injection of wastewater in deep disposal wells in several locations, including Colorado, Texas, Arkansas, Oklahoma and Ohio.

Texas has many deep underground injection wells, regulated by the U.S. Environmental Protection Agency, where companies dispose of the salty and chemical - and mineral - laden shale wastewater.

In addition, the injection of wastewater from oil and gas operations for disposal into deep underground wells is also altering the stresses of geologic faults, unleashing earthquakes [140].22 Increases in the frequency and magnitude of extreme weather events can impact agriculture and ecosystems [71,141].

The suspected culprit is fracking — or more specific to this case, the three injection wells in the area, which inject «vast volumes of salty, chemical - laced wastewater» deep into the ground.