Penn State scientists believe nano-engineered cement may be the answer for leaky wells
Monday, December 21, 2020
A new nanomaterial cement mixture may be the solution for sealing leaking natural gas wells, according to Penn State scientists.
Leaky wells are considered a potential source of methane emissions. When wells are drilled cement is used to secure the pipe to the surrounding rock, creating a seal that prevents methane from migrating and entering waterways or the atmosphere. However, over time, cracks in a wells casing can allow methane to escape.
Scientists have developed a very flexible cement that is more resistant to cracking and a repair technique that utilizes nanomaterial to better seal cracks.
Learn more: EurekAlert! > Nanoengineered cement shows promise for sealing leaky gas wells
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Shale FAQ
What is fracking?
Fracking is a slang term for hydraulic fracturing. Fracturing is a process by which highly pressurized fluid is pumped thousands of feet into the ground to fracture rock formations. The goal is to release the natural gas that’s locked inside the rock.
Is it safe?
What most concerns people about fracturing is ground water contamination. The worry is that fractures underground, caused by the process, will extending upwards and into aquifers, releasing gas and chemicals into the ground water supply. There’s been no confirmed reports of such a thing happening. Though surface spills and drill site blowouts can lead to localized environmental concerns.
Will my water catch on fire?
Flammable water is caused by the release of methane gas into a drinking water supply. Methane gas occurs naturally and can be released by any kind of drilling, including water wells. In Pennsylvania officials fined Chesapeake Energy $1 million for contaminating ground water with methane. It was determined that the company had not properly cemented it’s boreholes and gas migrated up the well, between rock and into aquifers.