Millions of deserted oil and gas wells plunge thousands of feet into the earth after fossil fuels have been pumped out, combusted and released as carbon dioxide. They have long been symbols of pollution. Colorado lawmakers are considering a new solution that would give these wells a redemptive purpose: deep receptacles to trap carbon for millennia.
From Colorado's high desert to the wooded hills of northwest Pennsylvania, millions of deserted oil and gas wells plunge thousands of feet into the earth after fossil fuels have been pumped out, combusted and released as carbon dioxide. They have long been symbols of pollution.
If successful, experts say using biochar to help fill a portion of the over 3 million abandoned oil wells nationwide could help slow climate change. But extracting fossil fuels has unearthed carbon -- formed out of ancient plant matter over eons -- that's been stored underground largely since the Mesozoic Era, the age of dinosaurs over 65 million years ago.
What they have in common, said James Gaspard, the company's co-founder, is that they'd otherwise be doomed to rot in a landfill, oozing CO2. Instead, the wood debris is loaded into large kilns, where the heat burns at three times the temperature of fire and the oxygen is sucked from the chamber in a process called pyrolysis. What's left is biochar.
And like diamonds, biochar's pitch-black flakes and dust shimmer. It's lightweight -- like popcorn -- and porous like a sponge, which is why it already has an international market. The Colorado study will determine if biochar could make up a portion of the slurry pumped into wells, and if it could be used as an ingredient in the concrete that's poured as the plug.
المملكة العربية السعودية أحدث الأخبار, المملكة العربية السعودية عناوين
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