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

Accumulation Number: 44MAPLEORIGINAL OPERATOR:TYPE:STATUS:LOCATION:STATE:ORIGINAL TITLE(S):BASIN:SUB-BASIN:DISCOVERY WELL:Longitude (E): 124.5387Latitude (S): -12.0199Date total depth reached: 11 JAN 90BHP Petroleum Pty LtdOil and GasOther Discovery690 km west of DarwinTerritory of Ashmore and Cartier Islands Adjacent Area(Northern Territory)AC/P2BonaparteVulcan Sub-basinMaple-1Water Depth:125 mKelly bushing:22 mOperator:BHP Petroleum Pty LtdTotal Depth:4,230 mKBNUMBER OF WELLS DRILLED: 1STRUCTURE/TRAP:Tilted fault block adjacent to the Paqualin Graben on thenortheastern extension of the Puffin Horst.RESERVOIR UNITS:1 (multiple reservoir sands)GROSS HYDROCARBON COLUMN: 500 m + (complete reservoir section not penetrated)HYDROCARBON SATURATION: 69% (average, 3,650-3,805 mKB)NET TO GROSS RATIO:16% (average, 3,650-3,805 mKB)BOTTOM HOLE TEMPERATURE: 130.5 o C (after 3 hours circulation and 15 hours postcirculation)PETROLEUM BEARING UNIT No.1:CONTENTS:FORMATION:AGE:LITHOLOGY:DEPOSITIONAL ENVIRONMENT:FORMATION TOP (mKB):POROSITY:PERMEABILITY:Sahul GroupOil and GasChallis FormationUpper Triassic (Norian to Carnian)Sandstone, greenish-white, fine to medium grained,moderately well sorted, subangular to subround,extensively cemented with carbonate cement, thinlyinterbedded with light to dark grey claystones and minoroolitic limestones.Estuarine and tidal channel sand sequence.3,686 m8.4 -16.4% (log porosity, 3,650-3,805 mKB)13.6% average0.5 – 1,400 mD (RFT data)TEST DATA FROM THE DISCOVERY WELL (Maple-1):RFT 1, 3,718.3 m,Recovered 0.29 m 3 of gas and 12.7 litresof filtrate and water with a thin oil film.RFT 6, 3,718.5 m,Recovered 2.66 m 3 of gas, 0.3 litres ofoil/condensate and 11 litres of water.Challis FormationChallis Formation