SEC FORM 3 SEC Form 3
FORM 3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
 
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1. Name and Address of Reporting Person*
MARKS MICHAEL E

(Last) (First) (Middle)
C/O SCHLUMBERGER LIMITED
153 EAST 53RD STREET 57TH FLOOR

(Street)
NEW YORK NY 10022

(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
04/13/2005
3. Issuer Name and Ticker or Trading Symbol
SCHLUMBERGER LTD /NV/ [ SLB ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
Officer (give title below) Other (specify below)
5. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year) 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Explanation of Responses:
No securities are beneficially owned.
By: /S/JANET B GLASSMACHER ATTORNEY-IN-FACT For: MICHAEL E. MARKS 04/20/2005
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
                        SCHLUMBERGER LIMITED

                         POWER OF ATTORNEY

The undersigned in his capacity as a director or officer or both
of Schlumberger Limited, a Netherlands Antilles corporation (the "Company"),
does hereby appoint Janet B. Glassmacher, Lynda M. Quagliara and Ellen Summer,
and each of them severally, his true and lawful attorney-in fact with power
to act with or without the other and with full power of substitution and
resubstitution, to execute for him and in his name, place and stead, in his
capacity as a director or officer or both of the Company, a statement of
beneficial ownership on Form 3, Form 4 or Form 5, and to file the same or
cause the same to be filed with the Securities and Exchange Commission.  This
Power of Attorney shall remain in full force and effect until the undersigned
is no longer required to file Forms 3, 4 and 5.


April 15, 2005                     /s/ Michael E. Marks
                                    Michael E. Marks