Ensco plc  Company Description Ensco plc (Ensco), formerly Ensco
International plc, is a global offshore contract drilling
company. The Company's business operates in four segments:
Deepwater, Asia Pacific, Europe and Africa and North and South
America. Each of its four operating segments provides one
service, contract drilling. The Company is engaged in the
drilling of offshore oil and natural gas wells by providing its
drilling rigs and crews under contracts with major
international, government-owned and independent oil and gas
companies. As of February 15, 2011, its offshore rig fleet
included 40 jackup rigs, five ultra-deepwater semisubmersible
rigs and one barge rig. Additionally, the Company had three
ultra-deepwater semisubmersible rigs and two ultra-high
specification harsh environment jackup rigs under construction.
The Company provides of offshore contract drilling services to
the international oil and gas industry.