CORRECTING and REPLACING SchlumbergerSema Completes Delivery of All IT Application Solutions for the ATHENS 2004 Olympic Games.

Business Editors/High-Tech Writers

CORRECTION...by Schlumberger

ATHENS, Greece--(BUSINESS WIRE)--Dec. 4, 2003

In BW5769 issued Dec. 3, 2003: Headline should read SchlumbergerSema Completes Delivery of All IT Application Solutions for the ATHENS 2004 Olympic Games (sted Schlumberger Completes Delivery of All IT Application Solutions for the ATHENS 2004 Olympic Games). Additionally, all references to Schlumberger in the release, except for in the About Schlumberger paragraph, should read SchlumbergerSema (sted Schlumberger).

The corrected release reads:

SCHLUMBERGERSEMA COMPLETES DELIVERY OF ALL IT APPLICATION SOLUTIONS FOR THE ATHENS 2004 OLYMPIC GAMES

SchlumbergerSema (NYSE:SLB), the Worldwide Information Technology Partner for the Olympic Games, today announced that it has successfully completed and delivered the IT application solutions, called Pack4, to the ATHENS 2004, the Organizing Committee for the Olympic Games. The software delivery marks a critical milestone in the completion of the global IT infrastructure that will support the ATHENS 2004 Olympic Games next summer.

"We are proud that all IT system applications have been delivered nine months before the beginning of the Games," said Claude Philipps, SchlumbergerSema chief technology integrator for the ATHENS 2004 Olympic Games. "The combination of our Olympic Games experience since Salt Lake City 2002 and our knowledge transfer strategy has enabled us to deliver the IT system applications well before the Aug. 13, 2004 deadline, allowing ample time to perform extensive live testing and therefore minimize costs and risks."

The Pack4 delivery provides all the elements of the Info Diffusion System (IDS), the critical application for delivering all sports results data to various audiences. IDS applications include the Commentator Information System (CIS), which pushes real-time event results and other background information to international broadcast commentators, as well as the intranet system that provides similar information on demand to the media, athletes, judges, coaches, sponsors and other Olympic Family attendees via INFO 2004 kiosks that will be located throughout Olympic venues. Also included is direct data feed to the various world news agencies and the official ATHENS 2004 Web site.

The key Pack4 activity also encompasses the completion of system applications for delivering results data for seven sport events: Taekwondo, Boxing, Mountain Bike, Fencing, Gymnastics-Trampoline, Shooting and Synchronized Swimming. SchlumbergerSema will conduct rigorous software testing over the next several months in the Integration Test Laboratory in Athens and then release the applications into production at various venues for live test events scheduled during the first half of 2004.

The applications for results data delivery of the other 30 sports disciplines of the 2004 Games have already been completed and successfully tested.

"We are extremely pleased with SchlumbergerSema ability to deliver all the system application components well in advance of Games-time and with its leadership approach that is fundamental to the success of the Games," said Dimitris Beis, technology general manager for ATHENS 2004. "Long-term planning and exhaustive testing are essential to delivering a flawless IT infrastructure that will empower the world's greatest sporting event."

The SchlumbergerSema contract with the International Olympic Committee is the largest sports related IT contract covering four Olympic Games over eight years: Salt Lake City in 2002, Athens in 2004, Turin in 2006 and Beijing in 2008. SchlumbergerSema has primary responsibility for Information Technology that is related to consulting, systems integration, operations management, information security and software applications development for the Olympic Games. For the ATHENS 2004 Games, SchlumbergerSema, as the lead systems integrator, is managing a consortium of technology expert partners and suppliers. When the Games go live in Athens next summer, a team of 3,250 IT professionals and volunteers will run all IT systems and services including the Technology Operations Center (TOC), primary and secondary data centers, and 60 competition and non-competition venues.

About Schlumberger

Schlumberger is a global oilfield and information services company with major activity in the energy industry. The company employs 78,000 people of more than 140 nationalities working in 100 countries, and consists of three business segments including: Schlumberger Oilfield Services is the world's premier oilfield services company supplying a wide range of technology services and solutions to the international oil and gas industry. SchlumbergerSema is a leading supplier of IT consulting, systems integration, and network and infrastructure services to the energy industry, as well as to the public sector, telecommunications and finance markets. In 2002, Schlumberger revenue was $13.2 billion. For more information, visit www.slb.com.