Table C.15 Summary of shale and tight gas plays. Formation Age Environment Top Thickness Source rock(s) Source Source rock Play type Exploration status depth (m) (m) rock TOC maturity (Ro) (%) Koukandowie Early fluvial <700 Type II/III; DOM Generally main oil to dry Tight and/or preliminary exploration; currently 3.0–>20.0 Fm Jurassic m gas; 0.8–2.0% shale gas inactive (includes coal) Gatton Early fluvial <1,100 m Raceview Fm, Ipswich Generally main oil to dry Tight gas preliminary exploration; currently Sandstone Jurassic 1,500 m Coal Measures <1.0–3.0; gas; 0.8–2.4% inactive coal Raceview Fm Late fluvial <300 Type III Generally main oil to dry Tight and/or preliminary exploration; currently Triassic 2,400 m <1.0–3.0 gas; 0.8–2.4% shale gas inactive
Table C.15 Summary of shale and tight gas plays. Formation Age Environment Top depth (m) Thickness (m) Source rock(s) Source rock TOC (%) Source rock maturity (Ro) Play type Exploration status Koukandowie Fm Early Jurassic fluvial m <700 Type II/III; DOM Generally 3.0–>20.0 (includes coal) main oil to dry gas; 0.8–2.0% Tight and/or shale gas preliminary exploration; currently inactive Gatton Sandstone Early Jurassic fluvial m <1,100 m Raceview Fm, Ipswich Coal Measures Generally <1.0–3.0; coal main oil to dry gas; 0.8–2.4% Tight gas preliminary exploration; currently inactive Raceview Fm Late Triassic fluvial m <300 Type III Generally <1.0–3.0 main oil to dry gas; 0.8–2.4% Tight and/or shale gas preliminary exploration; currently inactive 1,500 2,400
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