API-ANGA blast EPA for exaggerating unconventional wellsite emissions

The US Environmental Protection Agency has overestimated methane emissions from unconventional natural gas well operations, including well completions and hydraulic fracturing, in its latest greenhouse gases emissions inventory, two trade associations said. The American Petroleum Institute and America's Natural Gas Alliance surveyed members about methane emissions from wells and commissioned URS Corp. and the Levon Group to analyze survey results and write a 48-page report, released in June (OGJ, June 11, 2012, p. 23). The ANGA-API report estimated methane emissions from gas wells at 4.42 million tonnes compared with the EPA's estimate of 8.79 million tonnes (see table). Meanwhile, EPA sa...

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