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

Accumulation Number: 62TENACIOUSORIGINAL OPERATOR:TYPE:STATUS:LOCATION:STATE:ORIGINAL TITLE(S):BASIN:SUB-BASIN:DISCOVERY WELL:Longitude (E): 124.9012Latitude (S): -11.8595Date total depth reached: 21 JUN 97Water Depth:Operator:Total Depth:NUMBER OF WELLS DRILLED:STRUCTURE/TRAP:Cultus Timor Sea LtdOil and GasPossible Future Producer650 km west-northwest of Darwin, 560 m northwest ofOctavius-2.Territory of Ashmore and Cartier Islands Adjacent AreaAC/P17BonaparteVulcan Sub-basinTenacious-1157 mCultus Timor Sea Ltd3,205 mKB2 (includes 1 deviated well, Tenacious-1 ST1)Tilted fault blockPETROLEUM BEARING UNIT No.1:CONTENTS:FORMATION:AGE:LITHOLOGY:DEPOSITIONAL ENVIRONMENT:GROSS HYDROCARBON COLUMN:NET PAY:NET TO GROSS RATIO:HYDROCARBON SATURATION:OIL/WATER CONTACT:OIL GRAVITY:GAS TO OIL RATIO:BUBBLE POINT:RESERVOIR PRESSURE:POROSITY:PERMEABILITY:Flamingo GroupOil and GasUpper Vulcan Formation (Tithonian Sandstone Member)Jurassic (Tithonian)Sandstone with interbedded shales. Sandstone: fine grainedto pebbly, clean, quarzose, poorly sorted with minordetrital feldspar and traces of clay.Low stand slope fan deposited as proximal submarinefacies adjacent to newly emergent fault blocks.28.7 m (Tenacious-1 ST1)22.9 m (Tenacious-1 ST1)5.4 m (Tenacious-1)57% (2,798.2 – 2,937 mRT, Tenacious-1)44% (Tenacious-1)67.6% (Tenacious-1 ST1)2,764.8 mSS to 2,775.2 mSS48 - 49 o API520 scf/stb2,000 psia>4,000 psia18% (average log porosity, 2,798.2 – 2,803.6 mRT)798 - 861 mD (DST data, Tenacious-1 ST1)TEST DATA FROM THE DISCOVERY WELL (Tenacious-1):RFT 1, 2,799.5 m,Recovered 6.1 litres of 50.8 o API oil and0.977 m 3 of gas.RFT 2, 2,802 m,Recovered 1.9 litres of oil, 0.26 m 3 ofgas and 17.3 litres of mud filtrate.Upper Vulcan Formation (Tithonian Sandstone Member)Upper Vulcan Formation (Tithonian Sandstone Member)