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Item 9A Controls and Procedures
At the end of the period covered by this report, an evaluation was carried out under the supervision and with the participation of Schlumberger’s management, including the Chief Executive officer (“CEO”) and Chief Financial Officer (“CFO”), of the effectiveness of the design and operation of Schlumberger’s disclosure controls and procedures pursuant to Rule 13a – 15 of the Securities Exchange Act of 1934 (the “Exchange Act”). Based on that evaluation, the CEO and CFO have concluded that Schlumberger’s disclosure controls and procedures were effective as of December 31, 2003 to ensure that information required to be disclosed by Schlumberger in reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in Securities and Exchange Commission rules and forms. There has been no change in our internal controls over financial reporting that occurred during the year ended December 31, 2003 that has materially affected or is reasonably likely to materially affect, our internal controls over financial reporting.
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