COMPOSITIONAL DATA : GAS : GAS PROPERTIES Puffin Fm RFT ...

Accumulation Number: 55SARATOGAORIGINAL OPERATOR:Kerr-McGee NW Shelf Australia Energy Pty LtdTYPE:GasSTATUS:Other DiscoveryLOCATION:475 km west of DarwinSTATE:Western AustraliaORIGINAL TITLE(S):WA-276-PBASIN:BonaparteSUB-BASIN:PetrelDISCOVERY WELL:Saratoga-1Longitude (E): 126.4237Latitude (S): -12.3296Date total depth reached: 17 DEC 00Water Depth:94.6 mKelly bushing:25 mOperator:Kerr-McGee NW Shelf Australia Energy Pty LtdTotal Depth:2,139 mRTNUMBER OF WELLS DRILLED: 1STRUCTURE/TRAP:Westnorthwest – eastsoutheast trending anticline withindependent fault closure at Elang/Plover formation level.AREAL CLOSURE: 11 km 2VERTICAL CLOSURE:55 mBOTTOM HOLE TEMPERATURE: 115.6 o C (at 2,102 m, by Shell method)PETROLEUM BEARING UNIT No.1: Flamingo GroupCONTENTS:GasFORMATION:Upper Flamingo FormationAGE:Late JurassicLITHOLOGY:Sandstone: fine, well to moderately well sorted,subarkosic, well cemented with quartz overgrowths,minor feldspar, glauconite and authigenic kaolinite. Poorto occasionally fair visual porosity, some secondaryporosity development.FORMATION TOP (mKB):1,757 mPOROSITY:18.2% (average log porosity)PERMEABILITY:84.3 mD (average from logs)GROSS HYDROCARBON COLUMN: 8.5 mNET PAY:4.3 mNET TO GROSS RATIO: 51%HYDROCARBON SATURATION: 57.3% (average)GAS/WATER CONTACT:1,768.7 m (logs and pressure data)TEST DATA FROM THE DISCOVERY WELL (Saratoga-1):RCI Bottomhole sample, 1,761.5 m Upper Flamingo FormationRecovered 840 cc of gas.