• Print-friendly Annual Report:       English (size 912 KB)                         Part I     Part II     • Market for Schlumberger’s Common Stock and Related Stockholder Matters     • Selected Financial Data     • Management’s Discussion and Analysis of Financial Condition and Results of Operations     • Quantitative and Qualitative Disclosures About Market Risk     • Financial Statements and Supplementary Data       Consolidated Statement of Income       Consolidated Balance Sheet       Consolidated Statement of Cash Flow       Consolidated Statement of Stockholders' Equity       Shares of Common Stock     Notes to Consolidated Financial Statements       Report of Independent Auditors       Quarterly Results     • Changes in and Disagreements with Accountants on Account and Financial Disclosures     • Controls and Procedures     Part III     Part IV		Print friendly pdf of Form 10-K Part II Part II   Item 8    Notes to Consolidated Financial Statements   15.  Intangible Assets A summary of intangible assets follows:   (Stated in millions)     As at December 31, 2003 2002 Gross book value $796   $953 Less: Accumulated amortization 393   394   $403   $559     The amortization charged to income was $104 million in 2003 and $118 million in 2002. Intangible assets principally comprise patents, software, technology and other. At December 31, the gross book value, accumulated amortization and amortization periods of intangible assets were as follows: (Stated in millions)       2003   2002       Gross Book Value   Accumulated Amortization   Gross Book Value   Accumulated Amortization   Amortization Periods Software $ 401 $ 146   $ 458   $ 164   5 –10 years Technology 178 76     242     81   5 –10 years Patents 171 143     174     124   5 –10 years Other 46 28     79     25   1 –15 years   $ 796 $ 393   $ 953   $ 394         The weighted average amortization period for all intangible assets is approximately 7.5 years. Amortization charged to income for the subsequent five years is estimated, based on the December 31, 2003 Gross Book Value, to be 2004 - $99 million, 2005 - $77 million, 2006 - $61 million, 2007 - $47 million and 2008 - $37 million.     Go to Part II, Item 8, Notes: 16. Long-term Debt