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Schlumberger Acquires Techsia

Flagship Petrophysics Software Combined with Leading Log Acquisition and Reservoir Modeling Optimizes Reservoir Characterization and Real-Time Well Decisions

PARIS, May 20, 2009 - Schlumberger announced today that it has acquired the shares of Techsia SA, a supplier of petrophysical software based in Montpellier, France. Techsia, well-known in the industry for its flagship Techlog© product, will become the Schlumberger Petrophysics Software Center of Excellence for the development of state-of-the-art solutions for the oil and gas exploration and production industry.

“Techlog will form a powerful complement to the industry-leading Petrel* earth model through an integrated approach to log and core petrophysical interpretation. This will be particularly valuable in enabling real-time workflows for well construction. In addition, once operating in the Ocean* environment, Techlog will feature the same level of open-platform capability as the rest of our new-generation products,” said Tony Bowman, president of Schlumberger Information Solutions.

Stephanie Gottlib-Zeh, founder, president and chief executive officer of Techsia, added, “We see this move by Schlumberger as recognition of the high-quality software developed by Techsia. Accessing the Schlumberger global sales and business development organization will directly allow Techlog© to achieve greater market penetration and accelerate the realization of integrated workflows from the wellbore to the reservoir to change the game for reservoir management. I am convinced that the cultural fit between Techsia and Schlumberger will foster increasing innovation and create further opportunities.”

Techsia, currently employing 53 people, will continue to operate under its own name. Future product development will benefit from collaboration with a number of Schlumberger research and development centers that offer knowledge and expertise in geomechanics, well placement, production logging and fluid characterization. In addition, the introduction of the Techsia Malcom© solution for the chromatographic analysis of fluid samples will be enhanced by the global reach of Schlumberger.

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 more than 82,000 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 $27.16 billion in 2008. For more information, visit www.SLB.com.

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©Registered mark of Techsia
*Mark of Schlumberger

For further information, contact:

Stephen Whittaker
Director of Corporate Communications
Schlumberger Limited
Tel:+ 33 1 4062 1330
swhittaker@slb.com

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