Sentences with phrase «leakage rate estimate»

Stefan Schwietzke, a research associate at the National Oceanic and Atmospheric Administration's Earth System Research Laboratory in Boulder, Colo., said Howarth may be overestimating methane emissions from shale gas because his 12 percent leakage rate estimate is based mostly on a single satellite study.

Not exact matches

If current estimates are correct that the leakage rate is around 3 percent, then we calculated that switching all coal plants to average - efficiency natural gas plants would have little effect on the power sector's contribution to climate change.

As a proportion of the total oil and gas produced at these fields, this represents a leakage rate of about 10 % for both fields, in good agreement with previous estimates for several other leaky formations around the United States.

The paper finds that just 1.2 percent overall methane emissions are attributable to the U.S. natural gas industry, based on the most recent EPA methane emission estimate of 1.2 percent of production, which is in line with a number of studies that find low U.S. leakage rates between 1 and 1.8 percent.

Estimates of leakage rates for action under the Kyoto Protocol ranged from 5 to 20 % as a result of a loss in price competitiveness, but these leakage rates were viewed as being very uncertain.

UT's sampling of well sites estimates the national leakage rate associated with the production phase of natural gas extraction to be equivalent to less than half of one percent of total natural gas produced.

Why not focus on the central questions: What's the estimated size of the Arctic carbon reservoir that's susceptible to warming, and what's the maximum estimate rate of leakage to the atmosphere?

Although the study's estimated leakage rate for production operations was in line with EPA's estimate, several processes leaked more than previously thought, while another (well completions) emitted much less due to the effectiveness of recent EPA rules.

Some of the research found lower rates of leakage — though the lowest estimates tended to come from estimates provided by industry, or from examinations of the best - performing wells.

1 ton = ~ 7.3 barrels oil estimated Gulf oil leakage rate ~ 21600 barrels / day (5 - 40,000 depending on who's estimating) or 3000 tons / day methane emission = 1.5 e3 ton / day = 1.5 e9 g / day at 50 % methane by weight in the leak (probably a high estimate) Gulf area = 1.5 e6 km ^ 2 = 1.5 e12 m ^ 2 Gulf average depth = 1.62 e3 m Gulf volume = ~ 2.4 e15 m ^ 3

Republicans and the oil and gas industry argue that the methane leakage rate has been estimated to be 50 times lower than the EPA's estimate.