Origin Energy, on behalf of the L11 Joint Venture parties, advised that the Weatherford drilling rig 826 is currently drilling the Redback South 1 exploration well. This well is being drilled as a sidetrack from the Redback 1 wellbore. Drilling in the sidetrack hole commenced on August 25 at a depth of 2007mMD.

At 0600 hours Western Standard Time today, preparations were being made to drill ahead after setting 7" casing to 3,136.5mMD.

Gas exploration well, Redback South prospect, North Perth Basin, Western Australia (L11 / EP 320)

Redback South 1 is being drilled as a directional well to intersect the reservoir interval approximately 570 meters SSE of the Redback 1 location at a vertical depth of 3,685 meters sub-sea. The major fault compartment being targeted by this well is on the downthrown side of a fault immediately south of the Redback 1 well, with closure independent of the Redback 1 structure.

Initial Interests Origin Energy Developments Pty Limited 67.00% ARC (Beharra Springs) Pty Ltd 33.00%

Tags: Origin Energy