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

DST (CASED), 3,006.5-3,068 m,Flowed oil at 5,800 bbls/day through a21 mm choke.Elang FormationAPPRAISAL AND DEVELOPMENT DRILLING :Elang-2 was drilled 1.7 km west of Elang-1 to further appraise the Elang discovery. A production testover the intervals 3,054 – 3,059 mKB and 3,062 – 3,067 mKB flow oil at a maximum stabilised rate of6,080 bbls/day from the Elang Formation through a 16 mm choke. The oil had an API gravity of 57 o anda gas/oil ratio of 400 cubic feet per barrel. The well was suspended as a possible future oil producer.Elang-3 was spudded 2 km east of Elang-1 in 1995 to appraise the northeast flank of the Elang structure.The well was plugged and abandoned after failing to encounter significant hydrocarbons in the primaryobjective.Elang West-1 was drilled 7 km to the west of Elang-1 in early 1995. The well flowed 40 o API oil at1,640 bbls/day through a 19 mm choke from the interval 2,822-2,983 mKB. The zone tested by ElangWest-1 was stratigraphically higher than the producing zones encountered in Elang-1 and Elang-2. ElangWest-1 was cased and suspended as a future oil producer.RESERVES :Oil :17 MMbbls (includes Kakatua)Source: Department of Resources Develoment, WA, 1998.REMARKS:The Elang/Kakatua oil development commenced production in 1998. Sub-sea completions at Kakatua-1,Elang-1 and Elang-2 are connected to an FPSO (the Modec Venture 1) moored over the Elang field.STRATIGRAPHY (Elang-1) :AGE UNIT FORMATION TOP(mKB)Undifferentiated 104.0TERTIARY WOODBINE Oliver Formation 476.0GROUP Hibernia Formation 923.5Johnson Formation 1740.5BATHURST Upper Wangarlu Formation 2088.0ISLAND Lower Wangarlu Formation 2488.5CRETACEOUS GROUP ‘Radiolarite’ 2850.0Darwin Formation 2881.5FLAMINGO Flamingo Group 2915.oJURASSIC GROUP Montara Formation 3006.5TROUGHTON GROUP Plover Formation 3099.0