Schlumberger buys Sema for $5.3 billion

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London--Schlumberger Ltd. agreed Monday to buy Sema plc for about $5.3 billion, expanding the oil field services company into computer consulting for the oil, utility and mobile phone industries. New York-based Schlumberger generates 73% of its $9.6 billion in annual revenue from drilling services. However, to spur further growth, the company in the last several years has diversified into computer consulting and other technology businesses. Sema provides software for mobile phones and electronic payment systems, and manages computers for the energy, transport, telecommunications and banking industries.
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