The majority of methane emissions from the U.S. oil and gas industry can be attributed to a surprisingly small number of sources along its supply chain, according to a new study published by researchers this week.
“From the synthesis of 18 studies and over 15,000 individual measurements, we were able to identify a consistent finding from them," said Garvin Heath, a senior scientist with the National Renewable Energy Lab, and a co-author on the study.
The consistent finding was that 5 percent of sources are responsible for more than 50 percent of total volume of methane leaks.
Natural gas is viewed as a cleaner burning fuel compared to coal. But scientists in recent years have found that wells and production facilities leak methane. It's a greenhouse gas that traps 30 times more heat in the atmosphere than carbon dioxide.
The study was published in the journal Environmental Science & Technology.
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