Is coal seam gas the same as natural gas?
What is coal seam gas and how is it extracted? Coal seam gas is natural gas found in coal deposits, typically 300-600 metres underground. During the formation of coal, large quantities of gas are generated and stored within the coal on internal surfaces.
Which is worse fracking or coal?
“Natural gas may be a marginally cleaner fossil fuel than coal, but obtaining it through the processing of fracking turns out to be more damaging to the climate than coal ever was.
Why is coal seam gas bad?
Coal seam gas extraction can affect water in a number of ways: it could contaminate underground water if there’s a leak that enters a water source; affected water could travel between underground water sources; loss of pressure could cause fluid to move between connected underground sources; or it could contaminate the …
Does fracking poison water?
California Council on Science & Technology (2015): “The study found no releases of hazardous hydraulic fracturing chemicals to surface waters in California and no direct impacts to fish or wildlife.” (p. 35) Stanford University (2015): Scientists find no evidence that fracking chemicals seeped into drinking water.
How do you extract gas from coal?
The process involves pumping oxygen and steam through a small borehole into the coal seam to produce a small and controlled combustion. Unlike coal-bed methane, therefore, the actual coal is converted from a solid state into gas.
Is coal seam gas renewable?
Coal seam gas is a non-renewable energy resource that is a by-product of coal. … The methane gas is contained within the coal seams by water from groundwater aquifers.
Why is methane called sweet gas?
It is called ‘sweet gas’ because it does not contain any hydrogen sulphide. The gas often contains up to a few percent of carbon dioxide. In the past, coalbed methane was often the cause of numerous explosions in underground mines.
Why is shale so bad?
Greenhouse gas emissions from shale gas are predominantly down to two things: carbon dioxide produced when the gas is burned, and methane that leaks out while the well is being exploited. … Over a 100-year timeframe, conventional gas is almost certainly better than coal – but shale gas could be worse.
Is natural gas more harmful than coal?
Natural gas is the cleanest fossil fuel to use, while coal has one of the biggest negative impacts on the environment. The natural gas is: Cheaper. Reliable.