UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549, U.S.A. SCHEDULE 13D Under the Securities and Exchange Act of 1934 COMPAGNIE GENERAL DE GEOPHYSIQUE (GENERAL GEOPHYSICS CO.) (Name of Issuer) ORDINARY SHARES, NOMINAL VALUE 2 EUROS PER SHARE, AND AMERICAN DEPOSITORY SHARES FOR WHICH SUCH ORDINARY SHARES ARE EXCHANGEABLE (Title of Class of Securities) 204-386-106 (American Depository Shares) (CUSIP Number) Georges Picard Institut Francais du Petrole 4, Avenue de Bois-Preau 92500 Rueil-Malmaison France Tel: 011-33-1-47-52-71-02 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) Copies of all notices should be sent to: Francine L. Alfandary, Esq. CMS Bureau Francis Lefebvre - New York 712 Fifth Avenue, 29th Floor New York, New York 10019 Tel: 212-246-8045 DECEMBER 9, 2002 (Date of Event which Requires Filing of this Statement) If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Sections 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box [ ] Schedule 13D CUSIP No. 878546209 1. Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only): Institut Francais du Petrole. I.R.S. Identification Nos.: None 2. Check the appropriate box if a member of a Group (see instructions): (a) [X] (b) [ ] 3. SEC Use Only _________________________________________________ _________________________________________________ 4. Source of Funds (See Instructions): OO 5. Check if Disclosure of Legal Proceedings is Required Pursuant to Items 2(d) or 2(e) [__] 6. Citizenship or Place of Organization: France 7. Number of Shares Beneficially Owned by each Reporting Person with Sole Voting Power: 1,436,622 8. Number of Shares Beneficially Owned by each Reporting Person with Shared Voting Power: 0 9. Number of Shares Beneficially Owned by each Reporting Person with Sole Dispositive Power: 1,436,622 10. Number of Shares Beneficially Owned by each Reporting Person with Shared Dispositive Power: 0 11. Aggregate Amount Beneficially Owned by Each Reporting Person: 1,436,622 12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions): [___] 13. Percent of Class Represented by Amount in Row (11): approximately 12.3% 14. Type of Reporting Person (See Instructions): OO Item 1. Security and Issuer This Statement on Schedule 13D (this "Schedule 13D") pertains to 1,436,622 ordinary shares, nominal value EURO 2 per share ("Ordinary Shares"), and American depository shares ("ADS's"), for which such Ordinary Shares may be exchanged of Compagnie General de Geophysique (General Geophysics Co.), a French societe anonyme with its principal offices located at 1, Leon Migaux, 91341 Massy Cedex, France (the "Issuer"). References herein to Ordinary Shares are references also to ADS's unless the context indicates otherwise. Item 2. Identity and Background This Schedule 13D is filed by Institut Francais du Petrole, a French etablissement professionnel ("IFP"). The purpose of IFP, with regard to petroleum, its derivatives and substitutes, and the use thereof, is as follows: ? To investigate or carry out investigations and research of importance in furthering scientific knowledge and industrial technology, and to develop the result of its work in all forms; ? To train personnel so as to render them capable of participating in the furtherance of, effective dissemination and application of new knowledge; ? To keep government services, industry, technicians and researchers documented on scientific knowledge and industrial technology. ? IFP may, to exploit the results of its activities, acquire shares in industrial or commercial companies. ? IFP is organized under the laws of the French Republic. Its principal place of business is 1 and 4, avenue de Bois-Preau 92852, Rueil-Malmaison Cedex, France. The list of the executive officers and directors, attached hereto as Schedule I and incorporated herein by reference, contains the following information with respect to each such person: (a) name; (b) present principal occupation or employment and the name, principal business and address of any corporation or other organization in which such employment is conducted; (c) business address; and (d) citizenship. During the last five years, neither IFP nor, to the best knowledge of the IFP, any of the persons named on Schedule I has either: (a) been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors); or (b) been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction as a result of which such person was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws. Item 3 Source and Amount of Funds or Other Consideration IFP is a party to a Memorandum of Understanding dated July 2, 2001 ("MOU") with Technip-Coflexip (formerly Technip) and ISIS (since merged into Technip-Coflexip). An English translation of the MOU is attached hereto as Exhibit 1. The MOU permitted ISIS to require IFP to exchange 511,253 ordinary shares of Technip-Coflexip held by IFP against 1,436,622 Ordinary Shares held by ISIS (the "Exchange Promise"). On November 7, 2001, IFP and ISIS committed to two exchange commitments related to the Exchange Promise. Pursuant to these commitments, ISIS was bound to exchange its 1,436,622 shares of Compagnie Generale de Geophysique (CGG) for 511,253 shares of Technip (since renamed Technip-Coflexip) held by IFP, and vice versa. Technip-Coflexip notified IFP on November 27, 2002 that it was triggering the commitments. The exchange was consummated on December 9, 2002, by IFP's exchanging 511,253 ordinary shares of Technip-Coflexip as consideration for 1,436,622 Ordinary Shares. In June 2002, ISIS was merged into Technip-Coflexip. IFP had obtained its Technip-Coflexip shares as a result of a public exchange offer by Technip for ISIS (the "ISIS Offer"). IFP formerly held approximately 52.8% of the shares of ISIS and 11.3% of the shares of Technip-Coflexip. Item 4. Purpose of the Transaction IFP acknowledges that according to the Issuer's 2002 Annual Report on Form 20-F, the Ordinary Shares may be exchanged for ADS's at an exchange rate of five (5) ADS's for each Ordinary Share. Pursuant to the MOU, upon the successful completion of the ISIS Offer, IFP entered into the Exchange Agreement with ISIS, by which, subject to certain exceptions, for a one year period beginning one year after the publication of the closing notice announcing the final results of the ISIS Offer, ISIS could require IFP to exchange 511,253 ordinary shares of Technip- Coflexip held by IFP against 1,436,622 Ordinary Shares that ISIS held, that is to say an exchange ratio of 2.81. Thereafter, for the one-year period beginning on the second anniversary of the publication of the closing notice announcing the final results of ISIS Offer, IFP could require ISIS to sell all of the Ordinary Shares held by ISIS to IFP for the 511,253 Technip- Coflexip ordinary shares. In either event, IFP had the option of delivering in lieu of Ordinary Shares the cash equivalent of the Ordinary Shares as of the date of exercise. ISIS was subsequently merged into Technip-Coflexip. Technip-Coflexip gave notice pursuant to the Exchange Agreement to IFP on November 27th, 2002 that it was triggering the Exchange Promise. The exchange of 511,253 Technip-Coflexip ordinary shares for 1,436,622 Ordinary Shares was completed on December 9, 2002 . Olivier Appert, the President of IFP, and Gerard Fries, an Executive Vice President of IFP, are members of the Board of Directors of the Issuer. IFP has no present intent to cause any further changes to the Issuer's Board of Directors. Except as set forth in this Schedule 13D, the Reporting Person has not formulated any plans or proposals which relate to or would result in: (a) the acquisition by any person of additional securities of the Issuer; (b) an extraordinary corporate transaction involving the Issuer or any of its subsidiaries; (c) a sale or transfer of a material amount of the assets of the Issuer or any of its subsidiaries; (d) any change in the Board of Directors or management of the Issuer; (e) any material change in the Issuer's capitalization or dividend policy; (f) any other material change in the Issuer's business or corporate structure; (g) any change in the Issuer's charter or bylaws or other instrument corresponding thereto or other action which may impede the acquisition of control of the Issuer by any person; (h) causing a class of the Issuer's securities to be deregistered or delisted; (i) a class of equity securities of the Issuer becoming eligible for termination of registration or (j) any action similar to any of those enumerated above. All references to, and descriptions of, the MOU and the Exchange Agreement set forth in this Schedule 13D are qualified in their entirety by reference to the English translations of the MOU and the Exchange Agreement included as Exhibits 1 and 2, respectively, to this Schedule 13D and incorporated herein by reference. Item 5. Interest In Securities of the Issuer (a) As at March 31, 2003, the Reporting Person is the beneficial owner of 1,436,622 Ordinary Shares that represents approximately 12.3% of the outstanding Ordinary Shares. (b) As at March 31, 2003, the Reporting Person has the sole power to vote and dispose of the 1,436,622 Ordinary Shares beneficially owned. (c) The information contained in Items 3 and 4 of this Schedule 13D is hereby incorporated in its entirety in this Item 5. Except as described in this Schedule 13D, neither the Reporting Person nor any other person referred to in Schedule 1 attached hereto has acquired any Ordinary Shares during the past 60 days. (d) Not applicable (e) Not applicable Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer The information contained in Item 4 of this Schedule 13D is hereby incorporated in its entirety in this Item 6. Except as set forth in this Schedule 13D, there are no contracts, arrangements, understandings or relationships among the persons named in Item 2 and between any such persons and any person with respect to any securities of the Issuer, including, but not limited to, transfer or voting of any of the securities of the Issuer, finder's fees, joint ventures, loan or option arrangements, puts or calls, guarantees of profits, division of profits or loss, or the giving or withholding of proxies. Item 7. Material to be Filed as Exhibits Exhibit 1 English translation of the Memorandum of Understanding dated July 2, 2001 among Institut Francais du Petrole, ISIS and Technip Schedule I List of the Officers and Directors of Institut Francais du Petrole SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this Schedule 13D is true, complete and correct. Date: July 21, 2003 Paris, France Institut Francais du Petrole By: /s/ Georges Picard Name: Georges Picard Title: Executive Vice President Schedule I to Schedule 13 D filed by Institut Francais du Petrole The name, present principal occupation or employment, business address and country of citizenship of Institut Francais du Petrole's executive officers and directors is as follows: Executive Officers Name: Olivier APPERT Job Title: Chairman and Chief Executive Oficer Business address: Institut Francais du Petrole 4, avenue de Bois-Preau 92500 Rueil-Malmaison Citizenship: France Name: Edouard FREUND Job Title: Executive Vice President Business address: Institut Francais du Petrole 4, avenue de Bois-Preau 92500 Rueil-Malmaison Citizenship: France Name: Gerard FRIES Job Title: Executive Vice President Business address: Institut Francais du Petrole 4, avenue de Bois-Preau, 92500 Rueil-Malmaison Citizenship: France Name: Georges PICARD Job Title: Executive Vice President Business address: Institut Francais du Petrole 4, avenue de Bois-Preau, 92500 Rueil-Malmaison Citizenship: France Directors Name: Claude MANDIL Job title: President Business address: Institut Francais du Petrole 4, avenue de Bois-Preau, 92500 Rueil-Malmaison Citizenship: France Name Michel BENEZIT Job title: Directeur Afrique Business address: Total Fina Elf Tour Coupole 2, Place de la Coupole 6920786 Paris La Defense Citizenship: France Name: Bernard CABARET Job title: President Business address: BRGM Tour Mirabeau 39-43, Quai Andre Citroen- 75739 Paris Cedex 15 Citizenship: France Name: Christian CARRERAS Job title: Reprsentant du Syndicat Business address: 3, rue des Cedres 64150-Lagor Citizenship: France Name: Yves COLLIOU Job title: Directeur General Adjoint Business address: GAZ DE FRANCE 23, rue Philibert Delorme 75017 Paris Citizenship: France Name: Pascal COLOMBANI Job title: Associate Director Business address: A.T. Kearney 7, place d'Iena B.P. 2109 75751 Paris Cedex Citizenship: France Name: Alfonso CORTINA Job title: President Directeur General Business address: Societe REPSOL YPF Paseo de la Castellana 278-280-28046-Madrid Citizenship: Spain Name: Jean-Paul CRESSY Job title: Secretaire National Business address: Federation Chimie Energie CFDT 47/49, Avenue Simon Bolivar 75950-Paris Cedex 19 Citizenship: France Name: Georges DOUIN Job title: Directeur Plan-Produits et Operations internationales Business address: RENAULT S.A 7eme etage 13-15,Quai Le Gallo 92513- Boulogne-Billancourt Citizenship: France Name: Michel de FABIANI Job title: President Europe du groupe BP Business address: BP France Btiment Newton Parc St.Christophe 10, avenue de l'Entreprise 95866-Cergy Pontoise Citizenship: France Name: Jean Pierre LAMOURE Job title: President Directeur General Business address: Societe SOLETANCHE-BACHY 6, rue de Watford 92000-Nanterre Citizenship: France Name: Dominique MAILLARD Job title: Directeur General de l'Energie et des Matieres Premieres Business address: 61,bd Vincent Auriol 75703-Paris Cedex 13 Citizenship: France Name: Charles MATTENET Job title: Direction Gnerale Exploration-Production Directeur Strategie Croissance Business address: Total Fina Elf 2, Place de la Coupole 92078 Paris La Defense 6 Citizenship: France Name: Gerard MEGIE Job title: President Business address: C.N.R.S 3, rue Michel-Ange 75794-Paris Cedex 16 Name: Peter MELLBYE Job title: Executive Vice President Business address: STATOIL N-4035-STAVANGER Citizenship: Norway Name: Robert PEUGEOT Job title: Directeur Innovation et Qualite de PSA Business address: PSA Peugeot Citroen 18, rue de Fauvelles 92250-La Garenne Colombes Citizenship: France Name: Daniel VALOT Job title: President Directeur General Business address: TECHNIP-COFLEXIP Tour Technip 170, Place Henri Regnault 92973-Paris La Defense 6 Citizenship: France Name: Jean-Paul VETTIER Job title: Directeur General Business address: Raffinage/marketing Total Fina Elf Tour Total 24, cours Michelet 92069-Paris La Defense Cedex Citizenship: France CGG Schedule 13D.doc