Concrete casing
Sand is used to
keep fissues open
4
Gas in the rock is forced into the bore and flows to the surface
3
High-pressure water, sand and various chemicals are pumped into the bore and perforated holes where it fractures the shale
1,500m-6,000m
Bore
Shale rock
Vast reserves of natural gas can be found trapped in densely packed rock such as shale. Here is how it is reached
2
Bore is lined with concrete and an electric current is used to perforate holes into the casing and shale
1
A vertical hole is drilled into the shale rock. The drill can run horizontally once it enters this layer of rock
Concrete casing
Sand is used to
keep fissues open
4
Gas in the rock is forced into the bore and flows to the surface
3
High-pressure water, sand and various chemicals are pumped into the bore and perforated holes where it fractures the shale
1,500m-6,000m
Bore
Shale rock
Vast reserves of natural gas can be found trapped in densely packed rock such as shale. Here is how it is reached
2
Bore is lined with concrete and an electric current is used to perforate holes into the casing and shale
1
A vertical hole is drilled into the shale rock. The drill can run horizontally once it enters this layer of rock
1,500m-6,000m
Bore
Sand is used to
keep fissues open
Concrete casing
Shale rock
Vast reserves of natural gas can be found trapped in densely packed rock such as shale. Here is how it is reached
4
Gas in the rock is forced into the bore and flows to the surface
3
High-pressure water, sand and various chemicals are pumped into the bore and perforated holes where it fractures the shale
2
Bore is lined with concrete and an electric current is used to perforate holes into the casing and shale
1
A vertical hole is drilled into the shale rock. The drill can run horizontally once it enters this layer of rock