19 – Mining and the Lake Eyre Basin environment 185 gas from the Cooper–Eromanga Basin in South Australia and Queensland peaked in 2002, leading to a significant increase in production of unconventional gas from CSG fields (Fig. 19.9). This explains why the Queensland Government has increasingly supported CSG as a major gas supply (Queensland Department of Natural Resources and Mines 2015), rather 0 100 200 300 400 500 1964 1974 1984 1994 2004 2014 0 9000 18 000 27 000 36 000 45 000 2005 2007 2009 2011 2013 (a) (b) Fig. 19.9. (a) Annual conventional gas production in the Bowen–Surat Basin (black), Cooper–Eromanga Basin (South Australia, dark green Queensland, light green) and Denison Basin (yellow) and CSG in the Surat (red) and Bowen (blue) basins (b) six-monthly reporting of Queensland reserves of conventional gas in the Bowen–Surat Basin, Cooper–Eromanga and Denison basins (grey and black) and CSG in the Surat (red) and Bowen (blue) basins (equivalent data unavailable for South Australia) (data combined from Queensland Department of Natural Resources and Mines, 2004–2014 Australian Petroleum Production and Exploration Association 2015). Gas production (PJ/year) Gas reserves (PJ)