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

Accumulation Number: 16CORALLINAORIGINAL OPERATOR:TYPE:STATUS:LOCATION:STATE:ORIGINAL TITLE(S):BASIN:SUB-BASIN:DISCOVERY WELL:Longitude (E): 125.9560Latitude (S): -10.5917Date total depth reached: 21 DEC 95Woodside Petroleum Development Pty LtdOilProducer570 km northwest of DarwinTerritory of Ashmore and Cartier Islands Adjacent Area(Northern Territory)AC/P8BonaparteLaminaria High, Sahul PlatformCorallina-1Water Depth:411 mKelly bushing:22 mOperator:Woodside Petroleum Development Pty LtdTotal Depth:3,340 mKBNUMBER OF WELLS DRILLED: 2STRUCTURE/TRAP:Fault dependent closure on the Corallina Horst.AREAL CLOSURE: 11 km 2VERTICAL CLOSURE:140 mRESERVOIR UNITS: 1GROSS HYDROCARBON COLUMN: 77 mNET TO GROSS RATIO: 90%HYDROCARBON SATURATION: 79%GAS/OIL RATIO:239 scf/stbBUBBLE POINT:350 psig at 84 o FOIL GRAVITY:60 o APIBOTTOM HOLE TEMPERATURE: 120 o CPETROLEUM BEARING UNIT No.1:CONTENTS:FORMATION:AGE:LITHOLOGY:DEPOSITIONAL ENVIRONMENT:FORMATION TOP:POROSITY:PERMEABILITY:Flamingo GroupOilLaminaria/Elang Formation (basal sand unit of theFlamingo Group)Middle Jurassic (Callovian)Sandstone: fine to medium grained, partly pyritic withsilica cement at the top, grading to interbedded sandstone,siltstone and claystone towards the base of the unit. Theuppermost 12 m of reservoir comprises siltstone and andvery fine grained, argillaceous sandstone of poor reservoirquality.Transgressive, estuarine dominated delta.3,154 mKB15.2% (average log porosity)15.7% (average core porosity)597 mD (average from core)TEST DATA FROM THE DISCOVERY WELL (Corallina-1):Production Test, 3,186-3,196 m,Flowed 60 o API oil 7,800 bbls/dayand gas at 10,477 m 3 /day through a 16 mmchoke at 870 psi and 136 o F.Laminaria/Elang Formation