Coal Seam Gas : Coal Gas Essay

Good Essays
Coal Seam Gas

What is coal seam gas?

Coal Seam Gas (CSG) is a natural methane gas found in coal seams made by coal forming under the earth for millions of years. Countries such as the United States and China have utilised it for energy needs. Methane lines the inside of the coal cracks, pores and micro-pores and is found in the open fractures (cleats) and seams. (1) CSG is also known as Coal bed methane (CBM) and Unconventional Gas. Unlike coal itself, the gas lacks hydrogen sulphide. It is extracted by drilling a steel encased hole into the coal seam known as fracking. The gas is released from the coal as water is pumped out, the water and gas are separated and the gas then compressed into a natural gas pipeline.

Where is it found in Australia?
The CSG industry in Australia is around 20 years old, with the first business construction of a well occurring in Queensland in the mid 1990s. Australia has substantial identified reserves of CSG occurring in coal basins in Queensland, New South Wales, Victoria, Western Australia, South Australia and Tasmania. (2)
The biggest known basin being the Surat basin: which occupies 300,000 km2 of Southern Queensland and Northern New South Wales. (1)

Fig 1.0 – The major basins in Australia that hold coal seam gas. (1)

What is "fracking"?

‘Fracking’ (Hydraulic Fracturing) is the technique of mining that extracts oil or gas from the underground via wells drilled into the seam. (3) Steel pipes are then put into the newly drilled hole and
Get Access