Ensco plc Announces New Multi-Year Contract with Petrobras

Ensco plc ESV announced today that a subsidiary of the Company has entered into a 950-day drilling contract with Petroleo Brasileiro S.A. - Petrobras PBR for ENSCO 7500, a 5th generation ultra-deepwater semisubmersible drilling rig that has operated for more than 10 years in the major offshore markets of Australia and the U.S. Gulf of Mexico. Following upgrades to the rig at a shipyard in Singapore, ENSCO 7500 is scheduled to commence operations in third quarter 2011. Petrobras may extend the term for up to 950 additional days at mutually agreed rates.