The Echidna Prospect is located in exploration Block S-M-1102, approximately 20km north-east of Kangaroo.
The oil column has been identified from wireline pressure data across the Paleocene and Maastrichtian aged reservoir intervals. The recovered physical oil samples measured a 39.5 degree API oil gravity.
The Paleocene reservoir interval has a gross thickness of 75m, with an average porosity of 25%, whereas the Maastrichtian reservoir interval has a gross thickness of 113m, with an average porosity of 21%.
Drilled to a total depth of 2,379m, the well has completed the wireline logging program including pressure measurements, reservoir fluids sampling and petrophysical logging.
The well is due to undergo production testing within the Paleocene reservoir section.
Karoon managing director Robert Hosking said: "The Echidna discovery represents another significant achievement for Karoon.
"Echidna adds incremental resource to Karoon’s discovered Kangaroo oil field which further supports Karoon’s ambitions to develop an integrated production hub in the Santos Basin."
Karoon Gas Australia operates the block with 65% interest while Pacific Rubiales Energy holds the remaining stake in the block.
