AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JUNE 29, 2001

                                                      Registration No. 333-81717

================================================================================

                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549

                           _________________________

                         POST EFFECTIVE AMENDMENT NO. 1
                                       TO
                                    FORM S-8
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933

                           __________________________

                               SCHLUMBERGER N.V.
                             (SCHLUMBERGER LIMITED)
             (Exact name of registrant as specified in its charter)

      NETHERLANDS ANTILLES                                  52-0684746
  (State or other jurisdiction                           (I.R.S. Employer
of incorporation or organization)                       Identification No.)

153 EAST 53RD STREET, 57TH FLOOR
      NEW YORK, NEW YORK                                    10022-4624

   42, RUE SAINT-DOMINIQUE
        PARIS, FRANCE                                         75007

        PARKSTRAAT 83, THE HAGUE
            THE NETHERLANDS                                  2514 JG
(Addresses of Principal Executive Offices)                 (Zip Codes)

                          __________________________

                               CAMCO THRIFT PLAN
                           (Full title of the plan)

                          __________________________

                            James L. Gunderson, Esq.
                         GENERAL COUNSEL AND SECRETARY
                              SCHLUMBERGER LIMITED
                        153 EAST 53RD STREET, 57TH FLOOR
                         NEW YORK, NEW YORK  10022-4624
                    (Name and Address of agent for service)

                                 (212) 350-9400
         (Telephone number, including area code, of agent for service)

================================================================================


                      DEREGISTRATION OF UNSOLD SECURITIES

          Pursuant to Registration Statement No. 333-81717 on Form S-8 (the
"Registration Statement"), Schlumberger N.V., a Netherlands Antilles corporation
("Schlumberger"), registered 500,000 shares of its common stock, par value $.01
per share ("Schlumberger Common Stock"), to be offered under the Camco Thrift
Plan.

          In accordance with an undertaking made by Schlumberger in the
Registration Statement to remove from registration, by means of a post-effective
amendment, any of the securities which remain unsold at the termination of the
offering, Schlumberger hereby deregisters all shares of Schlumberger Common
Stock registered under the Registration Statement which remains unsold as of the
date hereof and all participation interests in the Camco Thrift Plan.


                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the registrant
certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing on Form S-8 and has duly caused this registration
statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of New York, State of New York, on June 29, 2001.

                                 SCHLUMBERGER N.V.
                                 (Schlumberger Limited)

                                 By: /s/ Jack Liu
                                    --------------------------------------
                                    Jack Liu
                                    Executive Vice President and
                                    Chief Financial Officer

     Pursuant to the requirements of the Securities Act of 1933, this
registration statement has been signed by the following persons on June 29,
2001 in the capacities indicated.

                *                                           *
------------------------------------       ------------------------------------
D. Euan Baird                              William T. McCormick, Jr.
Director, Chairman, President              Director
and Chief Executive Officer


                *                                           *
------------------------------------       ------------------------------------
Victor E. Grijalva                         Didier Primat
Director, Vice Chairman                    Director


/s/ Jack Liu                                                *
------------------------------------       ------------------------------------
Jack Liu                                   Nicolas Seydoux
Executive Vice President and               Director
Chief Financial Officer


/s/ Jean-Marc Perraud                                       *
------------------------------------       ------------------------------------
Jean-Marc Perraud                          Linda G. Stuntz
Controller and                             Director
Chief Accounting Officer


                *                                           *
------------------------------------       ------------------------------------
John Deutch                                Sven Ullring
Director                                   Director


                *                                           *
------------------------------------       ------------------------------------
Yoshihiko Wakumoto                         Andre Levy-Lang
Director                                   Director


                                                            *
------------------------------------       ------------------------------------
John C. Mayo                               Don E. Ackerman
Director                                   Director


*By:  /s/ Ellen S. Summer
    ---------------------------------
    Ellen S. Summer
    Attorney-in-Fact, pursuant to
    Power of Attorney dated July 16, 1998
    (filed as Exhibit 24 to Registration
    Statement on Form S-8
    (Registration No. 333-62545))


     Pursuant to the requirements of the Securities Act of 1933, the Plan
Administrator has duly caused this registration statement to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of New York,
State of New York, on June 29, 2001.

                                 CAMCO THRIFT PLAN


                                 By: /s/ Jack Kluepfel
                                    -----------------------------------------
                                    Name:  Jack Kluepfel
                                         ------------------------------------
                                    Title: Director of Employee Services
                                          -----------------------------------