Study Finds No Drinking Water Pollution From FracturingSource: US Department of Energy | 18 September 2014
The US Department of Energy’s National Energy Technology Laboratory (NETL) has released a technical report on the results of a limited field study that monitored a hydraulic fracturing operation in Greene County, Pennsylvania, for upward fracture growth out of the target zone and upward gas and fluid migration. Results indicate that, under the conditions of this study, for this specific location, fracture growth ceased more than 5,000 ft below drinking water aquifers and there was no detectable upward migration of gas or fluids from the hydraulically fractured Marcellus shale.
The research study, led by NETL’s Office of Research and Development, used natural and man-made tracers to look for evidence that fluid and gas in this area from the hydraulically fractured Marcellus shale had migrated at least 3,800 ft upward to a gas producing zone of Upper De-vonian/Lower Mississippian age shale, midway between the Marcellus shale and the surface. Microseismic monitoring from geophone arrays placed in two vertical Marcellus shale gas wells were used to determine the upper extent of induced fractures.