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