Woodside Updates Mauritanian Drilling Progress

PSC-B, Block 4
Tiof-4 Appraisal well and Tiof-3 ST2 Appraisal Well

Tiof-4 Appraisal well

The Stena Tay drill rig arrived at the Tiof-4 location on 9 November 2004 and drilled the bottom hole section to a final total depth of 2,908 meters.

Evaluation of logs acquired while drilling and wireline logging operations, including fluid sampling and downhole pressure measurements, has established that the well intersected a gross oil column of approximately 113 meters, containing several individual sands of variable thickness. The result was in line with pre-drill expectations.

At midnight on November 15, 2004 the Stena Tay was preparing to plug and abandon the Tiof-4 appraisal well as planned. The Stena Tay will then move to the Merou-A location.

Tiof-3 ST2 Appraisal Well

During the week some mechanical problems have resulted in a delay to commencing flow test operations. At midnight on 15 November 2004 the current operation was continuing preparations to flow text the well.

All reported drilling depths are referenced to the rig rotary table and all times are Universal Time (UTC) (Mauritanian time).

Wells are expected to be drilled in three production sharing contract areas during the campaign."

Dr John Doran, Chief Executive Officer of ROC commented that:

"The net oil pay within the overall gross oil column drilled at Tiof-4 lies within the 10% to 40% range established by the other discoveries and successful appraisal wells in the area."