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That process can cause very small earthquakes, but the fracking process doesn’t really, we think, induce large earthquakes,” USGS scientist Mike Blanpied said. “The thing that can induce larger earthquakes is the high-pressure waste fluid injection that’s done in some places.”
Questions have been raised about the possible connection between earthquake swarms and fracking – a process in which water, sand and often undisclosed chemicals are injected under high pressure deep into natural gas wells to fracture tight geological formations and free up more gas. Fracking occurs in about 90 percent of all natural gas wells in the United States. The fluids are often brought back up and stored on the surface for re-use and later disposed of in separate deep-injection wells. And it’s those disposal wells that in the past have prompted investigations by the USGS after rare earthquake swarms in southern Colorado, where in 2001 officials said they could “not rule out the possibility” the wells caused the quakes.
“Just to be clear, the connection between fracking and fluid injection and earthquakes is an area of active research and really we’re only starting to learn about how those things are connected.”
Last month, the Arkansas Oil and Gas Commission identified four disposal wells it says need to be shut down in the wake of earthquake swarms in that state last spring. The state also ordered a moratorium on new disposal wells in the area. The USGS cites a Colorado case in the 1960s as the most famous example of deep-injection wells causing an earthquake. “The largest and most widely known resulted from fluid injection at the Rocky Mountain Arsenal near Denver, Colo.,” the USGS states. “In 1967, an earthquake of magnitude 5.5 followed a series of smaller earthquakes. Injection had been discontinued at the site in the previous year once the link between the fluid injection and the earlier series of earthquakes was established.” The U.S. Army had been disposing of toxic fluids at depths of nearly 12,000 feet but had to discontinue the process after the quakes.
U.S. Government making plans? If it happens it will mean God will divide the U.S. down the middle. This is a WARNING! There are 15 nuclear power plants in the New Madrid fault zone that are of the same or similar design