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

Accumulation Number: 47OLIVERORIGINAL OPERATOR:TYPE:STATUS:LOCATION:STATE:ORIGINAL TITLE(S):BASIN:SUB-BASIN:DISCOVERY WELL:Longitude (E): 125.0088Latitude (S): -11.6448Date total depth reached: 02 FEB 88BHP Petroleum Pty LtdOil and GasOther Discovery645 km west-northwest of DarwinTerritory of Ashmore and Cartier Islands Adjacent Area(Northern Territory)AC/P6BonaparteVulcan Sub-basinOliver-1Water Depth:305 mKelly bushing:17.7 mOperator:BHP Petroleum Pty LtdTotal Depth:3,500 mKBNUMBER OF WELLS DRILLED: 1STRUCTURE/TRAP:Northeast-southwest oriented tilted fault block located onthe eastern flank of the Cartier Trough.AREAL CLOSURE:9.9 km 2 (on the Callovian unconformity)VERTICAL CLOSURE:280 mRESERVOIR UNITS: 1GROSS GAS COLUMN:162.7 m TVT (2,929 – 3,091.7 mTVDSS)GROSS OIL COLUMN:13 to 16 mTVT (3,091.7 – 3,104.3 or 3,108.1 mTVDSS)OIL/WATER CONTACT:3,104 mTVDSSOIL GRAVITY:31.8 o APIGAS/OIL RATIO:628 scf/bblBOTTOM HOLE TEMPERATURE: 121 o CPETROLEUM BEARING UNIT No.1:CONTENTS:FORMATION:AGE:LITHOLOGY:DEPOSITIONAL ENVIRONMENT:FORMATION TOP (mKB):POROSITY:HORIZONTAL PERMEABILITY:VERTICAL PERMEABILITY:Troughton GroupOil and GasPlover FormationEarly Jurassic (Bathonian to Hettangian)Sandstone, clear to light grey, generally unconsolidated,fine to coarse grained (predominantly medium),subangular to subrounded, moderately well sorted withoccassional white kaolinitic matrix and siliceous cement,interbedded with claystones and minor shales andsiltstones with rare coal laminae.Marginal marine to lower deltaic. Predominantly infillingof a wide, distributary channel system but also includesmouth bars/delta fronts (reworked in places) and crevassesplay facies.2,948 m10.4 - 21.3% (average 16.3%, log analysis)12 - 15.4% (average 14.1%, core data, 2,972 – 2,980.8mKB)319 - 984 mD, 707 mD average (full diameter coresamples).650 mD (average from RFT data).37 - 799 mD (388 mD average)