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

Accumulation Number: 19DELAMEREORIGINAL OPERATOR:TYPE:STATUS:LOCATION:STATE:ORIGINAL TITLE(S):BASIN:SUB-BASIN:DISCOVERY WELL:Longitude (E): 125.3042Latitude (S): -12.0005Date total depth reached: 20 AUG 90BHP Petroleum LtdGasOther Discovery600 km west of DarwinTerritory of Ashmore and Cartier Islands Adjacent Area(Northern Territory)AC/P4BonaparteVulcan Sub-basinDelamere-1Water Depth:101 mKelly bushing:22 mOperator:BHP Petroleum LtdTotal Depth:1,530 mKBNUMBER OF WELLS DRILLED: 1STRUCTURE/TRAP:Fault dependent closure (tilted fault block)AREAL CLOSURE: 1 km 2VERTICAL CLOSURE:10 mRESERVOIR UNITS: 1GROSS GAS PAY:9 m (1,267.5 – 1,276.6 mKB)GAS/WATER CONTACT:1,276.6 mKB (from RFT data)NET TO GROSS RATIO: 95%HYDROCARBON SATURATION: 69%RESERVOIR PRESSURE:1,848 psiaFORMATION TEMPERATURE: 61 o C (at 1,508.9 mKB, after 0.83 hours circulation, 11.33hours post circulation)PETROLEUM BEARING UNIT No.1:CONTENTS:FORMATION:AGE:LITHOLOGY:DEPOSITIONAL ENVIRONMENT:FORMATION TOP (mKB):POROSITY:PERMEABILITY:Flamingo GroupGasFlamingo GroupLate Jurassic to Early CretaceousSandstone, very coarse grained, subrounded to wellrounded, well sorted, moderate to high sphericity,glauconitic in part, quartzose.Lower shoreface environment at base of reservoir sectionto a coastal plain environment at the top (high standsystems tract).1,267 m26.6% (average log porosity)8.5-184 mD (core analysis)1,700 mD (average from RFT data)TEST DATA FROM THE DISCOVERY WELL (Delamere-1):RFT 1, 1,276.9 mRecovered 0.0014 m 3 of gas and 3.6 litresof filtrate and water.RFT 2, 1,274 m,Recovered 8.9 m 3 of gas and 1.8 litres offiltrate and water with a trace of oil.Flamingo GroupFlamingo Group