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

Accumulation Number: 25FISHBURNORIGINAL OPERATOR:BHP Petroleum Pty LtdTYPE:GasSTATUS:Other DiscoveryLOCATION:360 km west-southwest of DarwinSTATE:Western AustraliaORIGINAL TITLE(S):WA-218-PBASIN:BonaparteSUB-BASIN:Petrel Sub-basinDISCOVERY WELL:Fishburn-1Longitude (E): 127.5843Latitude (S): -12.9680Date total depth reached: 22 OCT 92Water Depth:63.6 mKelly bushing:30.4 mOperator:BHP Petroleum Pty LtdTotal Depth:2,870 mKBNUMBER OF WELLS DRILLED: 1STRUCTURE/TRAP:Tilted fault block with three-way dip closure.RESERVOIR UNITS: 1BOTTOM HOLE TEMPERATURE: 104 o C (after 1.2 hours circulation, 7.9 hours postcirculation)RESERVOIR PRESSURE:23,240 kpa (at 2,370 mKB)GROSS HYDROCARBON COLUMN: 51 m (2,319-2,370 mKB)NETT HYDROCARBON COLUMN: 27.7 mNETT TO GROSS RATIO: 54%HYDROCARBON SATURATION: 27% (average)GAS/WATER CONTACT:2,370 mKB (from logs)PETROLEUM BEARING UNIT No.1:CONTENTS:FORMATION:AGE:LITHOLOGY:Tern/Dombey/Cape Hay and Pearce MembersGasHyland Bay FormationLate Permian (Kazanian)Tern Member: Sandstone, off-white to pale brown, veryfine, subangular, poorly sorted, argillaceous, minorsiliceous cement, trace of carbonaceous material, feldsparand mica, grading to tan to dark grey silty claystonetowards top of unit.Dombey Member: Calcarenite, off-white, firm to hard,brittle, commonly recrystallised (crypto- tomicrocrystalline), fine to medium to coarse grained,angular to subangular, elongate to slightly spherical,poorly to moderately well sorted, common off-white,micritic and argillaceous matrix, fossiliferous.Cape Hay Member: Interbedded silty and arenaceousclaystone, sandstone and siltstone. Sandstone is off-whiteto light grey, clear to translucent quartz grains, very fineto medium, subangular to subrounded, moderately wellsorted, common calcareous cement and white,argillaceous matrix, trace of glauconite and carbonaceousmaterial.