How does Composite draw the Methane out of the ground?
Once the drilling has been completed, a programme of dewatering starts to remove water from the coal. The dewatering process enables the methane to flow from the coal to the surface with the water, where it is removed and supplied to the gas network, local intensive users, or to Composite’s own electricity generation facility. In March 2007, Composite announced a CO2 storage project to evaluate the potential of using flue-gas injection as part of enhancing methane recovery. Composite believes that CO2 injection into the coals is a real way to enhance the recovery of methane, while at the same time offering a solution for CO2 storage. Whereas other CO2 storage projects store the gas in an underground void or rock-matrix, Composite’s programme will evaluate the ability of CO2 to chemically bond to coal. Coal can typically absorb five times more CO2 than the methane it release.
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