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

Accumulation Number: 20EAST SWANORIGINAL OPERATOR:TYPE:STATUS:LOCATION:STATE:ORIGINAL TITLE(S):BASIN:SUB-BASIN:DISCOVERY WELL:Longitude (E): 124.5822Latitude (S): -12.3020Date total depth reached: 19 MAR 78Arco Australia LtdGasOther Discovery690 km west of DarwinTerritory of Ashmore and Cartier Islands Adjacent Area(Northern Territory)NT/P2BonaparteVulcan Sub-basinEast Swan-1Water Depth:103 mKelly bushing:21 mOperator:Arco Australia LtdTotal Depth:3,038 mKBNUMBER OF WELLS DRILLED: 2STRUCTURE/TRAP:Tilted fault blockRESERVOIR UNITS: 3BOTTOM HOLE TEMPERATURE: 247 o F (pseudo-Horner plot method)PETROLEUM BEARING UNIT No.1:CONTENTS:FORMATION:AGE:LITHOLOGY:FORMATION TOP (mKB):POROSITY:PETROLEUM BEARING UNIT No.2:CONTENTS:FORMATION:AGE:LITHOLOGY:DEPOSITIONAL ENVIRONMENT:FORMATION TOP (mKB):GROSS GAS COLUMNS:NET TO GROSS RATIOS:POROSITY:Bathurst Island GroupGasBathurst Island GroupCretaceousSandstone, fine to medium, occasionally coarse,subround, moderately well sorted, common sparitecement, trace of glauconite, rare foraminifera.1,824.2 m25% (average log porosity)Troughton GroupGasPlover Formation (2 discrete reservoirs)JurassicSandstone, very fine to coarse, predominantly mediumgrained, subangular to subround, fair to good sorting(bimodal grainsize distribution), kaolinitic matrix withcommon sparite cement, abundant quartz overgrowthsand pyrite.Fluvio-deltaic to marginal marine2,330.2 m20.2 m (2,695 – 2,715.2 mKB)18.3 m (2,792 – 2,810.3 mKB)50% (2,695 – 2,715.2 mKB)55% (2,792 – 2,810.3 mKB)7.4 - 17.9% (log porosity, 2,695 – 2,715.2 mKB)15.2 - 22.2% (log porosity, 2,792 – 2,810.3 mKB)