Fracking: How it works

The video tutorial explains the process of drilling deep into the Earth's crust to reach the water table, sealing the well with cement, and then drilling horizontally into shale formations. It details the use of perforation guns to create fissures in the rock and the injection of fracking fluid, a mixture of water, sand, and chemicals, to widen these fissures. Natural gas flows from the fissures into the well and up to the surface. The tutorial also highlights environmental concerns, such as the potential contamination of waterways and aquifers by fracking fluid and other chemicals, and the non-biodegradable nature of some substances left underground.

What are some potential environmental impacts of fracking fluid?

What happens to some of the fracking fluid after the process is completed?