1,500m-6,000m
Concrete casing
Shale rock
Bore
1
A vertical hole is drilled into the shale rock. The drill can run horizontally once it enters this layer of rock. Water supply for Cuadrilla in Lancashire will come from mains, from United Utilities
2
Bore is lined with concrete and an electric current is used to perforate holes into the casing and shale
Sand is used to
keep fissues open
3
High-pressure water, sand and various chemicals are pumped into the bore and perforated holes where it fractures the shale
4
Gas in the rock is forced into the bore and flows to the surface
1,500m-6,000m
Sand is used to
keep fissues open
Concrete casing
Shale rock
Bore
1
A vertical hole is drilled into the shale rock. The drill can run horizontally once it enters this layer of rock. Water supply for Cuadrilla in Lancashire will come from mains, from United Utilities
2
Bore is lined with concrete and an electric current is used to perforate holes into the casing and shale
3
High-pressure water, sand and various chemicals are pumped into the bore and perforated holes where it fractures the shale
4
Gas in the rock is forced into the bore and flows to the surface