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Schlumberger Acquires GeothermEx

Strengthens Position to Support Geothermal Customers Worldwide

HOUSTON, April 27, 2010—Schlumberger announced today the acquisition of GeothermEx Inc., a California-based global provider of expert geothermal consulting services. The acquired team now operates as an integrated part of Schlumberger Geothermal Services, covering the full spectrum of resource exploration, development and production services.

“Schlumberger has been providing technologies and services to the geothermal industry for many years,” said Sanjaya Sood, vice president, Schlumberger Geothermal Services. “With the addition of GeothermEx our team is better-equipped to offer innovative techniques to efficiently develop geothermal projects worldwide.”

Established in 1973, GeothermEx has developed numerous pioneering techniques for optimizing geothermal resources. Serving hundreds of geothermal power projects in more than 50 countries, GeothermEx specializes in geosciences, drilling, engineering, project development, reservoir management, and economic analysis.

About Schlumberger

Schlumberger is the world’s leading supplier of technology, integrated project management and information solutions to customers working in the oil and gas industry worldwide. Employing approximately 78,000 people representing over 140 nationalities and working in approximately 80 countries, Schlumberger provides the industry’s widest range of products and services from exploration through production.

Schlumberger Limited has principal offices in Paris, Houston and The Hague and reported revenues of $22.7 billion in 2009. For more information, visit www.slb.com.

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For further information, contact:

Susan Ganz
Media Relations Manager
Schlumberger
Tel:+1 713 689 7142
sganz1@slb.com