Earthquakes Induced by Fluid Injection

No. Of more than 150,000 Class II injection wells in the United States, roughly 40,000 are waste fluid disposal wells for oil and gas operations.
Currently, there are no methods available to do this. Evidence from some case histories suggests that the magnitude of the largest earthquake tends to increase as the total volume of injected wastewater increases.
Earth's crust is pervasively fractured at depth by faults.
Of the case histories for which there is a scientific consensus that an injection operation induced earthquakes, the largest are magnitude*5.
No. Given enough time, the injected fluids can migrate substantial horizontal and vertical distances from the injection location. Induced earthquakes commonly occur several kilometers below the injection point.
So far, there is no conclusive example linking injection operations to triggering of major earthquakes, however we cannot eliminate this possibility. More research is needed to either confirm or refute this possibility.
There is a credible connection between the wastewater injection activities near Youngstown and the recent earthquakes, including the magnitude 4 earthquake that occurred on New Year’s Eve, 2011.
To produce natural gas from shale formations, it is necessary to increase the interconnectedness of the pore space (permeability) of the shale so that the gas can flow through the rock mass and be extracted through production wells.
USGS supports both internal and external (university-based) research on the causes of induced earthquakes. This research has a focus on injection-induced earthquakes, both from wastewater disposal and from enhanced geothermal technologies.