SLB Schlumberger Ltd

The Board of Directors of Schlumberger Limited (NYSE:SLB) has declared a quarterly dividend of 12.5 cents per share on outstanding stock. The dividend is payable on July 7, 2006 to stockholders of record on June 7, 2006. About Schlumberger Schlumberger is the world's leading oilfield services company supplying technology, project management, and information solutions that optimize performance for customers working in the oil and gas industry. The company employs more than 60,000 people of over 140 nationalities working in more than 80 countries, and comprises two business segments. Schlumberger supplies a wide range of products and services from formation evaluation through directional drilling, well cementing and stimulation, well completions and productivity to consulting, software, information management, and IT infrastructure services that support core industry operational processes. WesternGeco, jointly owned with Baker Hughes, is the world's largest seismic company and provides advanced acquisition and data processing services. In 2005, Schlumberger operating revenue was $14.31 billion. For more information, visit www.SLB.com.