The digging is now parallel to the ground above, but at an immense depth below the surface (anywhere around 7 , 000 to 12 , 000 feet). The well is surrounded by a protective steel casing, and it is surrounded by both steel and concrete when it is drilled past the underground aquifer level.
[header] How to better understand fracking [title] Drill a well. [step] A well is drilled vertically into the ground until it reaches the permeable shale layers. [substeps] Once the digging has hit the gas rich layers, redirect it horizontally into the rock layers.