Coal seam gas or CGS is the term used for the occurring natural gas found beneath the ground coal seams trapped by ground pressure and water. Australia has the fairly big supply of CGS. Generally, methane is the commonly found gas in coal seams from which the term CBM or Coal Bed Methanine is mistakenly used for CGS.
CSG has the storage of both water and gas. Water which is pressurised by the overlying heavy rock material keeps this gas in its place. When the pressure of the water is reduced, gas begins to release. During the production or extraction procedure, water pressure gets reduced when well gets drilled into coal seam, slowly pumping out the water from the seam. It allows the flowing of gas to the well’s surface.
The drilling of CSG well does not go deeper than seven hundred meters, even if gas, at deeper drills, can be released from coal seams. As soon as the well is drilled, it turns to be the sole conduit for water and gas when arriving at the surface. These two products don’t mix together beneath the ground. Water gets transferred to the treatment and central collection areas, while gas gets piped to the processing facilities for drying, compressing and feeding into the commercial pipelines.
Gas-fired electrical stations produce less than one half of the gas emission of greenhouse which is the same as the size of coal-fired power location. USA has even experienced the reduced emission because of the increase in use of gas.
In Australia’s and Queensland’s coal basins, huge resources of CSG spread out the areas. CSG is produced commercially for fifteen years or more in Queensland. Presently, fuel is being supplied to produce seventeen percent of the electrical power needs of Queensland.
CSG is primarily used in fuelling appliances that require natural gas as well as in generating electricity. In general, it has the lower impact when climate changes than coal when utilised as the source of energy.
General idea of CSG
As the whole world becomes more mindful of the use of gas for electric power, coal seam gas has been the preferred resource. Natural gas can heat at homes, help set up dishes, and activate appliances like dryers and water heaters.
Is natural gas equivalent to methane?
Methane is made up of natural gas which in itself is flammable colorless and odorless hydrocarbon gas. Usually, it happens in deposits found under the earth’s crust areas. It happens over the surface of the petroleum deposits. The progress is just similar to petrol. As oil deposit takes place for years, this gas will roughly take the same length of years.
CSG Fast Facts
- CSG is a natural form of gas.
- It is a combination of gases but typically composed of methane.
- Below the ground, it is held inside the coal through the water pressure formation in coal fractures and cleats.
Although CSG has been mainly produced since 1970’s in USA, this is still a new industry for Australia, with initial production in 1996 in Bowen Basin, Queensland.