Lesson 1, Topic 1
In Progress
Unconventional Gas (Fracking)
- Coal seam gas, Coalbed methane
- present in coal seams (may or may not be viable for coal mining)
- methane adsorbed in the solid matrix of coal
- in a mine CH 4 is released as coal is excavated
- explosion risk, asphyxiation risk ( often flared as a waste product)
- Shale gas
- natural gas trapped within shale formation
- low pressure fracturing to release methane
- Tight gas
- natural gas trapped in reservoir rocks with low permeability
- high pressure fracturing to release methane