This paper describes application of an established coal seam gas (CSG) testing technology to the reservoir and production conditions prevalent in the Bowen basin, Queensland, Australia. The technology involves using Raman spectroscopy to measure gas partial pressure in single phase fluids produced under pressure from dewatering coal seam gas wells. The technique's efficacy has been described extensively in technical literature. Prior tests have been conducted on permeable coals that produce several hundred BWPD. Applying the technology to tight coals in the Bowen basin is not considered straightforward.

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