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

Accumulation Number: 13CASSINIORIGINAL OPERATOR:TYPE:STATUS:LOCATION:STATE:ORIGINAL TITLE(S):BASIN:SUB-BASIN:DISCOVERY WELL:Longitude (E): 124.9681Latitude (S): -12.1465Date total depth reached: 18 JUL 88Water Depth:116 mKelly bushing:26 mOperator:BHP Petroleum Pty LtdTotal Depth:1,724 mKBNUMBER OF WELLS DRILLED: 2STRUCTURE/TRAP:AREAL CLOSURE: 1.2 km 2VERTICAL CLOSURE:15 mRESERVOIR UNITS:Multiple reservoir sands.GAS/OIL RATIO:250 scf/stbOIL GRAVITY:40 o APIDRIVE:Water driveBOTTOM HOLE TEMPERATURE: 71 o CPETROLEUM BEARING UNIT No.1:CONTENTS:FORMATION:AGE:LITHOLOGY:DEPOSITIONAL ENVIRONMENT:FORMATION TOP (mKB):POROSITY: 24-30%PERMEABILITY:Up to 10 darciesTEST DATA FROM THE DISCOVERY WELL (Cassini-1):DST 1, 1,435.3-1,437.1 m, Challis FormationFlowed 40 o API oil at 7,590 bbls/dayand gas at 37,520 m 3 /day through a 2 inchchoke.BHP Petroleum Pty LtdOilProducer650 km west of DarwinTerritory of Ashmore and Cartier Islands Adjacent Area(Northern Territory)AC/L3BonaparteVulcan Sub-basinCassini-1 (sidetracked)Fault dependent closure on the southern extremity of theCleghorn Horst, separated from the adjacent Challisaccumulation by a saddle area.Sahul GroupOilChallis FormationMiddle to Late TriassicQuartzose and commonly feldspathic sandstones,typically 10-20 m thick, separated by 25-50 m thickclaystone, siltstone and carbonate sequences withoccasional thin sandstone interbeds.Upper deltaic regressive sequence at base, gradingupwards to a sequence of barrier/shoreline sands whichtransgress lagoonal and tidal flat sediments.1,405 mKB