DRILLING FOR GAS
Extracting gas from the Earth isn't that simple! The rock must be broken so that the natural gas can be collected.
To extract the greatest quantity of gas possible, the hole that has been drilled is lined with special materials designed to keep the gas in.
Next, electrical charges are sent down the well and this affects the rock around it. After the charges are set off, a highly pressurised liquid fracking solution is sent down the well.
This solution breaks up the rocks, releasing the natural gas. Since the gas is lighter than is the fracking solution, it rises to the top of the well where it is captured.
NEXT: Processing gas