Ownership Submission
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, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Corrigan Mark
 2. Date of Event Requiring Statement (Month/Day/Year)
04/01/2006		 3. Issuer Name and Ticker or Trading Symbol
SCHLUMBERGER LTD /NV/ [SLB]
(Last)
(First)
(Middle)
153 EAST 53RD STREET 57TH FLOOR		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Vice President
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

NEW YORK, NY 10022-4624		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
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)
Common Stock 5,987
D
 
Common Stock 1,061
I
SL Int'l P/S Plan

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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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 of Derivative Security: 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
Employee Stock Option (right to buy) w/ tandem Tx w/h right   (1) 07/16/2013 Common Stock 8,078 $ 46.02 D  
Employee Stock Option (right to buy) w/ tandem Tx w/h right   (2) 04/21/2009 Common Stock 2,005 $ 55.619 D  
Employee Stock Option (right to buy) w/ tandem Tx w/h right   (3) 04/17/2012 Common Stock 2,092 $ 55.745 D  
Employee Stock Option (right to buy) w/ tandem Tx w/h right   (4) 01/19/2015 Common Stock 18,460 $ 64.91 D  
Employee Stock Option (right to buy) w/ tandem Tx w/h right   (5) 07/21/2014 Common Stock 18,468 $ 65.235 D  
Employee Stock Option (right to buy) w/ tandem Tx w/h right   (6) 04/15/2008 Common Stock 1,099 $ 71.315 D  
Employee Stock Option (right to buy) w/ tandem Tx w/h right   (7) 10/19/2010 Common Stock 2,399 $ 82.282 D  
Employee Stock Option (right to buy) w/ tandem Tx w/h right   (8) 10/21/2007 Common Stock 5,495 $ 82.348 D  
Employee Stock Option (right to buy) w/ tandem Tx w/h right   (9) 01/18/2016 Common Stock 29,079 $ 108.47 D  
Incentive Stock Option (right to buy)   (1) 07/16/2013 Common Stock 1,922 $ 46.02 D  
Incentive Stock Option (right to buy)   (2) 04/21/2009 Common Stock 8,984 $ 55.619 D  
Incentive Stock Option (right to buy)   (3) 04/17/2012 Common Stock 2,908 $ 55.745 D  
Incentive Stock Option (right to buy)   (4) 01/19/2015 Common Stock 1,540 $ 64.91 D  
Incentive Stock Option (right to buy)   (5) 07/21/2014 Common Stock 1,532 $ 65.235 D  
Incentive Stock Option (right to buy)   (7) 10/19/2010 Common Stock 601 $ 82.282 D  
Incentive Stock Option (right to buy)   (9) 01/18/2016 Common Stock 921 $ 108.47 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Corrigan Mark
153 EAST 53RD STREET 57TH FLOOR
NEW YORK, NY 10022-4624		       Vice President  

Signatures

By: /s/Janet B. Glassmacher Attorney-in-Fact For: Mark Corrigan 04/05/2006
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) This option becomes exercisable in four equal annual installments beginning July 16, 2004.
(2) Exercisable in five equal annual installments beginning April 21, 2000.
(3) Exercisable in five equal annual installments beginning April 17,2003.
(4) This option becomes exercisable in four equal annual installments beginning January 19, 2006.
(5) This option becomes exercisable in four equal annual installments beginning July 21, 2005
(6) The options became exercisable in five equal annual installments on April 15, 1999.
(7) Exercisable in five equal annual installments beginning October 19, 2001.
(8) The option becomes exercisable in five equal annual installments beginning October 21, 1998.
(9) This option becomes exercisable in four equal annual installments beginning January 18, 2007.

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