This is a guest post by Joe Romm, republished with permission from the original on Climate Progress.
Satellite observations of huge oil and gas basins in East Texas and North Dakota confirm staggering 9 and 10 percent leakage rates of heat-trapping methane. “In conclusion,” researchers write, “at the current methane loss rates, a net climate benefit on all time frames owing to tapping unconventional resources in the analyzed tight formations is unlikely.”
In short, fracking speeds up human-caused climate change, thanks to methane leaks alone. Remember, natural gas is mostly methane, (CH4), a super-potent greenhouse gas, which traps 86 times as much heat as CO2 over a 20-year period. So even small leaks in the natural gas production and delivery system can have a large climate impact — enough to gut the entire benefit of switching from coal-fired power to gas.
Back in February, we reported that the climate will likely be ruined already well past most of our lifespans by the time natural gas has a net climate benefit. That was based on a study in Science called “Methane Leaks from North American Natural Gas Systems” reviewing more than 200 earlier studies. It concluded that natural gas leakage rates were about 5.4 percent.
The new study used satellites to look at actual “methane emissions for two of the fastest growing production regions in the United States, the Bakken and Eagle Ford formations,” between the periods 2006–2008 and 2009–2011. They found leakages rates of 10.1 percent and 9.1 percent respectively!