SLB Schlumberger Ltd

Schlumberger Limited (NYSE:SLB) will hold a conference call at 9:00am ET on July 21, 2006 to discuss the results for the second quarter ending on June 30, 2006. The results are expected to be released at 6:00am ET that same morning. To access the conference call attendees should contact the Conference Call Operator at 800-230-1074 within North America or 612-234-9960 outside of North America approximately 10 minutes prior to the call's start time, and ask for the "Schlumberger Earnings Conference Call." A replay of the conference call will be available until August 4, 2006, and can be accessed by dialing 800-475-6701 within North America or 320-365-3844 outside of North America, and giving the access code 831645. A live webcast of the conference call will be simultaneously broadcast at www.SLB.com/irwebcast on a listen-only basis. Attendees should log in 15 minutes prior to the start of the call to test their browsers and register for the webcast. Following the event, a replay will be available at the same URL until August 4, 2006. About Schlumberger Schlumberger is the world's leading oilfield services company supplying technology, information solutions and integrated project management that optimize reservoir performance for customers working in the oil and gas industry. The company employs more than 64,000 people of over 140 nationalities working in more than 80 countries. Schlumberger supplies a wide range of products and services from seismic acquisition and processing; formation evaluation; well testing and directional drilling to well cementing and stimulation; artificial lift and well completions; and consulting, software and information management. In 2005, Schlumberger operating revenue was $14.31 billion. For more information, visit www.SLB.com.