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

Accumulation Number: 32JAHALORIGINAL OPERATOR:BHP Petroleum Pty LtdTYPE:OilSTATUS:Other DiscoveryLOCATION:560 km northwest of DarwinSTATE:Zone of Cooperation, Part AORIGINAL TITLE(S): ZOCA 91-01BASIN:BonaparteSUB-BASIN:Laminaria HighDISCOVERY WELL:Jahal-1Longitude (E): 126.1025Latitude (S): -10.5676Date total depth reached: 06 MAY 96Water Depth:402.3 mKelly bushing:25 mOperator:BHP Petroleum Pty LtdTotal Depth:3,445 mKBNUMBER OF WELLS DRILLED: 1 (plus 1 sidetrack)STRUCTURE/TRAP:Tilted fault blockPETROLEUM BEARING UNIT No.1: Troughton GroupCONTENTS:OilFORMATION:Elang FormationAGE:Late Jurassic (Callovian)LITHOLOGY:Sandstone with interbedded claystone. Sandstone: very fineto medium, predominantly fine grained, subangular tosubrounded, well sorted, quartzose.DEPOSITIONAL ENVIRONMENT: Deltaic highstand and transgressive systems tracts.GROSS HYDROCARBON COLUMN: 33 m (Jahal-1ST1)10 m (Jahal-1)NET PAY:7.56 m (Jahal-1)13.69 m (Jahal-1ST1)HYDROCARBON SATURATION: 65.2%OIL/WATER CONTACT:3,308 mRT (3,283 mTVDSS)OIL GRAVITY:55 o APIPOROSITY:10.7% (average log porosity)PERMEABILITY:less than 10 mDTEST DATA FROM THE DISCOVERY WELL (Jahal-1 and Jahal-1/ST1):RFT, 3,306.5 m,Recovered 20.5 litres of oil and 0.5 m 3of gas.DST 1, 3,300-3,315 m,Flowed oil at 1,422 bbls/day and gas at2,548 m 3 /day through a 9.5 mm choke.Elang FormationElang Formation