Oil and gas flares are more dangerous than thought. Free Technical Library News

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Oil and gas flares are more dangerous than thought

10.10.2022

Experts from the USA studied the impact of oil and gas flares on the environment. The methane produced as a result of the operation of installations greatly harms the environment around the world.

According to oil and gas companies, flares burn 98% of the natural gas emitted. But observations of three US oil and gas fields show that the efficiency is only about 91%.

The natural gas leak is mostly methane. This greenhouse gas lingers in the atmosphere for only nine to 80 years, but its warming potential is 98 times that of carbon dioxide. So oil and gas companies are lighting flares by burning methane to produce less potent carbon dioxide and water. Industry and the US government assumed that these flares operated at XNUMX% efficiency. Previous research has shown that this may be overly optimistic.

Genevieve Plante, an atmospheric scientist at the University of Michigan at Ann Arbor, and her colleagues sent aircraft to take air samples from more than 300 flares in the Bakken Basin in North Dakota, as well as in the Permian and Eagle Ford Basins in Texas, which accounts for more than 80 percent of flaring in the US. The samples showed five times more unburned methane than previously thought.

The drop in efficiency from 98% to 91% may seem small, but the implications are significant. Any percentage that is in the methane phase instead of the CO 2 phase is significantly more problematic.

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