Adavale Basin

The Adavale Basin is an entirely concealed subsurface basin in south central Queensland with an areal extent of 23,000 square miles (roughly the size of West Virginia). Only 60 exploration wells have been drilled in the basin to date. Two commercial gas discoveries, Gilmore and Log Creek, have been made and lie immediately north of ATP 865/866 and south of ATP 862/864. Gilmore is a 16 billion cubic feet gas field (2.5 million barrels of oil equivalent) that occupies a fold-related trap in Middle Devonian clastic rocks of the Log Creek Formation and the Lissoy Sandstone. The basin was actively explored in the 1960s but became a secondary target with the discovery of oil and gas in the Cooper–Eromanga basins in the early 1980s.

Cooper-Eromanga Basin

Presently the Cooper and Eromanga basins are Queensland’s major conventional hydrocarbon producing basins and while some areas have reached a relatively mature exploration and development stage, large areas remain underexplored. The Basin has delivered excellent drilling success with over 40% of all wells drill being successful.

Queensland Exploration Discoveries

Gas discoveries dominate the Permian to Triassic Cooper Basin with numerous profitable oil discoveries also made. The Jurassic to Early Cretaceous Eromanga Basin is mostly oil-prone. The distribution of gas and oil reflects source character, maturation levels and hydrocarbon migration history of the two basins.