149 exploratory wells and 149 development wells. Greatest drilling activity in Queensland, South Australia, and Western Australia. The Cooper Basin was the principal area of new discoveries. Commercial significance of Jackson Field (Mesozoic) in Queensland. Natural gas production increased 4.5% in 1982 compared with 1981, to 12,528 million m 3 . Oil production in 1982 decreased by 11,189,151 m 3 (5.2%) to 21,584,172 m 3 , an average daily production of about 371,957 bbl.--Modified journal abstract.