Mr. Simon Ayat has been the Chief Financial Officer and Executive Vice President of Schlumberger Limited since March 01, 2007. Mr. Ayat served as Treasurer and Vice President of Schlumberger Limited from February 2005 to March 2007 and served as its Controller from December 2002 to February 2005, also served as its Vice President, Business Processes from December 2002 to February 2005 and served as its Vice President, Finance from April 2001 to December 2002. Mr. Ayat's 24-year career with Schlumberger spans a variety of management positions from Paris, Houston and Dallas, to the Middle East and Far East regions. He served as a Oilfield Services Controller of Schlumberger Limited, from September 1998 to April 2001 and served as its GeoMarket Manager Indonesia from February 1998 to September 1998. He began his career in 1982 as Division Controller for Forex Neptune. Mr. Ayat obtained Bachelor of Science degree in Business Administration with an emphasis on finance and accounting from the University of San Francisco.