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

Accumulation Number: 17CRUXORIGINAL OPERATOR:TYPE:STATUS:LOCATION:STATE:ORIGINAL TITLE(S):BASIN:SUB-BASIN:DISCOVERY WELL:Longitude (E): 124.4526Latitude (S): -12.9441Date total depth reached: 04 MAY 2000Nippon Oil Exploration (Vulcan) Pty LtdGasPossible Future Producer700 km west of Darwin.Territory of Ashmore and Cartier Islands Adjacent Area(Northern Territory)AC/P23BonaparteVulcan Sub-basinCrux-1Water Depth:168.0 mKelly bushing:26.5 mOperator:Nippon Oil Exploration (Vulcan) Pty LtdTotal Depth:3,955 mRTNUMBER OF WELLS DRILLED: 1STRUCTURE/TRAP:Fault dependent closure with internal four-way dip closure.PETROLEUM BEARING UNIT No.1: Sahul GroupCONTENTS:GasFORMATION:Nome FormationAGE:TriassicGROSS HYDROCARBON COLUMN: 244 m (3,640 – 3,884 mRT)GAS/CONDENSATE RATIO: 36.8 bbls/MMscf (DST 1)22.4 bbls/MMscf (DST 2)POROSITY:14% (average log porosity)PERMEABILITY:up to 5,500 mDTEST DATA FROM THE DISCOVERY WELL (Crux-1):DST 1, 3,816 – 3,853 m,Flowed gas at a maximum rate of890 m 3 /day and condensate at1160 bbls/day on a 96/64" choke.DST 2, 3,642 – 3,660 m,Flowed gas at a maximum rate of960 m 3 /day and condensate at761 bbls/day on a 80/64" choke.Nome FormationNome FormationRESERVES:Gas:1.365 TCFSource: Northern Territory Department of Business Industry and Resource Development,2000.REMARKS:Post well analyses indicate the Crux structure contains a palaeo oil column that has been breached in theMiocene. The structure has subsequently been charged with gas in the Pliocene to Pleistocene.