Woollybutt-4H to add production

The Woollybutt-4H development well has kicked off the Woollybutt South development.

Offshore staff

PERTH, Western Australia -- The Woollybutt-4H development well has kicked off the Woollybutt South development. The well, in permit WA-25-L in the Barrow sub-basin, was sidetracked from the existing Woollybutt-4 well.

On Sept. 19, the Woollybutt-4H sidetrack had reached an intermediate depth of 2,800 m (9,186 ft) of a planned measured depth of 3,400 m (11,155 ft). When completed, the well will be tied back to an FPSO on the northern lobe of the development.

When Woollybutt-4H is completed, the rig will move to the Woollybutt-6 appraisal well to test the region south of Woollybutt-4 for additional reserves. If commercial quantities are discovered, Woollybutt-6 will be completed as a production well and tied back to the FPSO via subsea flowlines. The additional reserves are expected to increase oil production from the Woollybutt field to approximately 14,000 b/d of oil.

Eni Australia Ltd. operates the WA-25- L joint venture with 65% interest. Partners include Tap West Pty. Ltd. with 15% interest and Mobil Australia Resource Co. Pty. Ltd. with 20% interest.

9/19/2007

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