ADAVALE BASIN, QUEENSLAND

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_________________________________________________________________________TRAP_________________________________________________________________________TRAP 2: Log Creek FormationDISCOVERY WELL: Gilmore No.1CONTENTS: Gas_________________________________________________________________________PETROLEUM-BEARING UNIT(S)_________________________________________________________________________PETROLEUM-BEARING UNIT 1: Deltaic unitPETROLEUM CONTENTS: GasPRODUCTION STATUS: NilFORMATION: Log Creek FormationAGE: Middle DevonianTRAPPING MECHANISM: Structural; fold-relatedLITHOLOGY: Sandstone: dolomitic in parts; interbedded with carbonaceousand micaceous shale and siltstone; minor conglomerateDEPTH TO TOP OF PETROLEUM-BEARING UNIT : 3813 m BKBPOROSITY: LowPERMEABILITY: Very lowTEMPERATURE GRADIENT: 3.1 ºC/100mPRESSURE GRADIENT: 11 300 Pa/mPETROLEUM-BEARING UNIT 2: Marine unitPETROLEUM CONTENTS: GasPRODUCTION STATUS: NilFORMATION: Log Creek FormationAGE: Middle DevonianTRAPPING MECHANISM: Structural; fold-relatedLITHOLOGY: Sandstone: calcareous and carbonaceous; interbedded withcalcareous and carbonaceous shale and siltstoneDEPTH TO TOP OF PETROLEUM-BEARING UNIT : 4065 m BKBPOROSITY: < 4%PERMEABILITY: < 4 mdTEMPERATURE GRADIENT: 3.1 ºC/100mPRESSURE GRADIENT: 11 300 Pa/m13
PETROLEUM ACCUMULATIONS SUMMARY SHEET_________________________________________________________________________ACCUMULATION: Log CreekCOMPILATION DATE: 22/4/87OPERATOR: Northern Michigan Exploration CompanyTYPE: Gas showCOMMERCIAL STATUS: Uneconomic and undevelopedLOCATION: 900 km west-northwest of Brisbane, QueenslandSTATE: QueenslandPETROLEUM TITLE(S): ATP 172PDISCOVERY WELL: Log Creek No.1 (Kyranis & McDonagh, 1966)- latitude: 25º15'56" longitude: 144º54'37"- discovery: gas- date total depth reached: May 1965NUMBER OF WELLS DRILLED: 1 explorationNil developmentSTRUCTURE: Anticline: northeast trending; bounded to the southeast bya parallel fault (Structure map, Plate 1)- areal closure: 7 sq.km- vertical closure: 100 mSUBDIVISION OF PETROLEUM ACCUMULATION:2 traps2 petroleum-bearing unitsNUMBER AND TYPE OF PRODUCING ZONES:- Nil gas Nil gas/condensate- Nil gas/oil Nil oilDRIVE MECHANISM: ? Gas expansionPRODUCTION COMMENCED: Nil, but raw gas was used to drill extension wellsPRODUCTION INFRASTRUCTURE: Nil14
Page 1 and 2: Department of Primary Industries an
Page 3 and 4: FOREWORDThis is the fourth in a ser
Page 5 and 6: ABSTRACTThe Adavale Basin, in south
Page 7 and 8: The Adavale Basin's major stratigra
Page 9 and 10: Exploration historyThe Phillips and
Page 11 and 12: Porosity and permeabilityThe petrol
Page 13 and 14: August 1987. A recent study, includ
Page 15 and 16: NOTES ON DEVELOPMENTSGILMORE: a for
Page 17: ___________________________________
Page 21 and 22: ___________________________________
Page 23 and 24: HEIKILA, H.H., 1966 - Palaeozoic of
Page 25: GLOSSARYAccumulation: Any petroleum

ADAVALE BASIN, QUEENSLAND

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