ENSCO Has Re-boarded All Rigs with the Exception of the ENSCO 29

ENSCO International continues to make progress inspecting its Gulf of Mexico drilling rigs in the aftermath of Hurricane Katrina. Company personnel have re-boarded all rigs except one platform rig, and several rigs have resumed normal drilling operations.

Based on initial on-site assessments, none of the Company's jackup rigs appear to have sustained any significant damage. The Company's deepwater semisubmersible rig, ENSCO 7500, has returned to its pre-storm drilling location and preparations are underway to resume drilling operations. As previously reported, platform rig ENSCO 29 sustained significant damage as a consequence of the storm. ENSCO is working with its customer to assess the extent of damage and to determine appropriate remedial action.

Absent any significant developments, the Company does not anticipate any further reports on the condition of its Gulf of Mexico drilling rig fleet in the aftermath of Hurricane Katrina.

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