Wednesday, April 20, 2011

Shale gas seen as global warming factor

Wednesday, April 20, 2011

(ITHACA, n.y., April 12, UPI)-natural gas from shale formations a larger greenhouse gas footprint than conventional gas, oil and coal over a period of 20 years has, say US researchers.

This Footprint--in the form of methane emissions-the question is the use of gas extracted from shale, often as a climate-friendly alternative to fossil fuels promoted.

Researchers at Cornell University, gas footprint evaluated the greenhouse gas by high-volume hydraulic splitters slate Formationen--often referred to as "Fracking"- and estimated methane emissions created by the process won.

You calculated the lifetime of the average of a shale gas well, 4 to 8% of the total production of the fountain into the atmosphere than methane in routine ventilation and equipment leaks, as also with flow-back return occurs liquids during drilling after the fragmentation of the shale formations, an article in the journal climate change letters said.

"The large greenhouse-gas footprint of shale gas undercuts the logic of the use as a fuel bridging decades if the goal is to reduce global warming," said Cornell researcher Robert Howarth. "The complete footprint should be used, plan for alternative energy of futures, which are to take due account of global climate change."

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