UNITED STATES SECURITIES AND EXCHANGE COMMISSION
 WASHINGTON, D.C. 20549
 FORM 20-F/A
 AMENDMENT NO. 1
ANNUAL REPORT
PURSUANT TO SECTION 13 OR 15(d)
OF THE SECURITIES EXCHANGE ACT OF 1934
 for the fiscal year ended December 31, 2009
 Commission File Number 001-15106
    
    Commission File Number: 001-33121Petróleo Brasileiro S.A.Petrobras
    
    Petrobras International Finance Company(Exact name of registrant as
specified in its charter)Brazilian Petroleum CorporationPetrobras(Translation of registrants name into English)
    
    (Exact name of registrant as specified in its charter)
 The Federative Republic of Brazil
    
    Cayman Islands(Jurisdiction of incorporation or organization)
    
    (Jurisdiction of incorporation or organization)
 
 Avenida República do Chile, 65
    
    4th Floor , Harbour Place20031-912  Rio de Janeiro  RJ
    
    103 South Church StreetBrazil
    
    P.O. Box 1034GT  BWI(Address of principal executive offices)
    
    George Town, Grand CaymanCayman Islands(Address of principal executive offices)Almir Guilherme Barbassa(55 21) 3224-2040  barbassa@petrobras.com.br
    
    Sérvio Túlio da Rosa TinocoAvenida República do Chile, 65  23rdFloor
    
    (55 21) 3224-1410  ttinoco@petrobras.com.br20031-912  Rio de Janeiro  RJ
    
    Avenida República do Chile, 65  3rdFloorBrazil
    
    20031-912  Rio de Janeiro  RJBrazil
 (Name, telephone, e-mail
and/or facsimile number and address of company contact person)
    
    (Name, telephone, e-mail
and/or facsimile number and address of company contact person)
 
 Securities registered or to be registered pursuant to Section 12(b) of the Act:
 Title of each class:
    
    Name of each exchange on which registered:Petrobras Common Shares, without par value*
    
    New York Stock Exchange*Petrobras American Depositary Shares, or ADSs
    
    New York Stock Exchange(evidenced by American Depositary Receipts, or ADRs),each representing 2 Common SharesPetrobras Preferred Shares, without par value*
    
    New York Stock Exchange*Petrobras American Depositary Shares
    
    New York Stock Exchange(as evidenced by American Depositary Receipts),each representing 2 Preferred Shares6.125% Global Notes due 2016, issued by PifCo
    
    New York Stock Exchange5.875% Global Notes due 2018, issued by PifCo
    
    New York Stock Exchange7.875% Global Notes due 2019, issued by PifCo
    
    New York Stock Exchange5.75% Global Notes due 2020, issued by PifCo
    
    New York Stock Exchange6.875% Global Notes due 2040, issued by PifCo
    
    New York Stock Exchange
 *
    
    Not for trading, but only in connection with the registration of American Depositary Shares
pursuant to the requirements of the New York Stock Exchange. Securities registered or to be registered pursuant to Section 12(g) of the Act: None
Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act:
Title of each class:
 The number of outstanding shares of each class of stock of Petrobras and PifCo as of December 31, 2009 was:
 Indicate by check mark if the registrant is a well-known seasoned issuer, as defined by Rule
405 of the Securities Act.
 Yes þ No o
 If this report is an annual or transitional report, indicate by check mark if the registrant is not
required to file reports pursuant to section 13 or 15(d) of the Securities Exchange Act of 1934.
 Yes o No þ
 Indicate by check mark whether the registrant (1) has filed all reports required to be filed by
Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for
such shorter period that the registrant was required to file such reports), and (2) has been
subject to such filing requirements for the past 90 days.
 Yes þ No o
 Indicate by check mark whether the registrant has submitted electronically and posted on its
corporate Web site, if any, every Interactive Data File required to be submitted and posted
pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months
(or for such shorter period that the registrant was required to submit and post such files).
 Yes þ [Petrobras] No o
 Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer,
or a non-accelerated filer. See definition of accelerated filer in Rule 12b-2 of the Exchange
Act. (Check one):
 Large accelerated filer þ [Petrobras]
    
    Accelerated filero
    
    Non-accelerated filer þ [PifCo](Do not check if a smaller reporting company)
    
    Smaller reporting companyo
 Indicate by check mark which basis of accounting the registrant has used to prepare the financial
statements included in this filing:
 U.S. GAAPþ    International Financial Reporting Standards as issued by the International Accounting Standards Boardo    Othero
 If Other has been checked in response to the previous question, indicate by check mark which
financial statement item the registrant has elected to follow.
 Item 17 o Item 18 o
 If this is an annual report, indicate by check mark whether the registrant is a shell company (as
defined in Rule 12b-2 of the Exchange Act).
 Yes o No þ




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EXPLANATORY NOTE
   
    
    With respect to the report relating to Petrobras domestic reserves located onshore and
offshore Brazil, D&M revised its original report to (1) include a more complete discussion
of the methods employed by the third-party engineer to arrive at its conclusion that there
was no material difference between the net proved reserve estimates prepared by Petrobras
and D&M; (2) present 12-month average adjusted and benchmark price information for oil and
natural gas used to determine reserve volumes; and (3) state the aggregate percentage
difference between the net proved reserve estimates of Petrobras and D&M.
    
    D&Ms report relating Petrobras international reserves located at certain selected
properties in North America and South America (outside of Brazil) has been revised to
include the 12-month average adjusted and benchmark pricing information for oil and natural
gas used to determine reserve volumes.
    
    D&M deleted language from the final paragraph of each of its reports purporting to limit
reliance on the report.
   2




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Item 19. Exhibits
 No.
    
    Description1.1
    
    Amended Bylaws of Petróleo Brasileiro S.A.-Petrobras (together with an English
version) (incorporated by reference to the Annual Report on Form 20-F of Petróleo
Brasileiro S.A.Petrobras, filed with the Securities and Exchange Commission on
June 30, 2004 (File No. 1-15106)).1.2
    
    Memorandum and Articles of Association of Petrobras International Finance Company
(incorporated by reference to Exhibit 1 to the Annual Report on Form 20-F of
Petrobras International Finance Company, filed with the Securities and Exchange
Commission on July 1, 2002, and amendments to which were filed on December 13,
2002, March 20, 2003 (File No. 333-14168) and June 26, 2007 and May 19, 2008 (File
No. 001-331121). PifCos Memorandum and Articles of Association were last amended
on February 23, 2008.2.1
    
    Form of Amended and Restated Deposit Agreement, dated as of January 2007, among
Petrobras, JPMorgan Chase Bank, N.A., as depositary, and registered holders and
beneficial owners from time to time of the American depositary shares, representing
the common shares of Petrobras (incorporated by reference to Exhibit 4.1 of the
Registration Statement of Petrobras and Petrobras International Finance Company on
Form F-3 filed with the Securities and Exchange Commission on December 11, 2009
(File No. 333-163665).2.2
    
    Amendment No. 1, dated as of June 2007, to the Amended and Restated Deposit
Agreement, dated as of January 2, 2007, among Petrobras, JPMorgan Chase Bank, N.A.,
as depositary, and registered holders and beneficial owners from time to time of
the American depositary shares, representing the common shares of Petrobras
(incorporated by reference to Exhibit 4.2 of the Registration Statement of
Petrobras and Petrobras International Finance Company on Form F-3 filed with the
Securities and Exchange Commission on December 11, 2009 (File No. 333-163665)).2.3
    
    Form of American Depositary Receipt evidencing American Depositary Shares
representing the common shares of Petrobras (incorporated by reference to Exhibit
4.3 of the Registration Statement of Petrobras and Petrobras International Finance
Company on Form F-3 filed with the Securities and Exchange Commission on December
11, 2009 (File No. 333-163665)).2.4
    
    Form of Amended and Restated Deposit Agreement, dated as of January 2007, among
Petrobras, JPMorgan Chase Bank, N.A., as depositary, and registered holders and
beneficial owners from time to time of the American depositary shares, representing
the preferred shares of Petrobras (incorporated by reference to Exhibit 4.4 of the
Registration Statement of Petrobras and Petrobras International Finance Company on
Form F-3 filed with the Securities and Exchange Commission on December 11, 2009
(File No. 333-163665)).2.5
    
    Amendment No. 1, dated as of June 2007, to the Amended and Restated Deposit
Agreement, dated as of January 2, 2007, among Petrobras, JPMorgan Chase Bank, N.A.,
as depositary, and registered holders and beneficial owners from time to time of
the American depositary shares, representing the preferred shares of Petrobras
(incorporated by reference to Exhibit 4.5 of the Registration Statement of
Petrobras and Petrobras International Finance Company on Form F-3 filed with the
Securities and Exchange Commission on December 11, 2009 (File No. 333-163665)).2.6
    
    Form of American depositary receipt evidencing American depositary shares
representing the preferred shares of Petrobras (incorporated by reference to
Exhibit 4.6 of the Registration Statement of Petrobras and Petrobras International
Finance Company on Form F-3 filed with the Securities and Exchange Commission on
December 11, 2009 (File No. 333-163665)).2.7
    
    Indenture, dated as of July 19, 2002, between Petrobras International Finance
Company and JPMorgan Chase Bank, as Trustee (incorporated by reference to exhibit
4.5 of the Registration Statement of Petrobras International Finance Company and
Petrobras on Form F-3, filed with the Securities and Exchange Commission on July 5,
2002, and amendments to which were filed on July 19, 2002 and August 14, 2002 (File
No. 333-92044-01)).2.8
    
    Amended and Restated First Supplemental Indenture, originally dated as of July 6,
2001, as supplemented as of November 26, 2001, as amended and restated as of March
31, 2010, between Petrobras International Finance Company (PifCo) and The Bank of
New York Mellon, as Trustee, relating to the 9.750% Senior Notes due 2011
(incorporated by reference to Exhibit 2.8 to the Annual Report on Form 20-F of
Petrobras and PifCo, filed with the Securities and Exchange Commission on May 19,
2010 (File Nos. 1-15106 and 1-33121)).2.9
    
    Amended and Restated Second Supplemental Indenture, initially dated as of July 2,
2003, as amended and restated as of September 18, 2003, as amended and restated as
of March 31, 2010, between Petrobras International Finance Company (PifCo) and
JPMorgan Chase Bank, as Trustee, relating to the 9.125% Global Notes due 2013
(incorporated by reference to Exhibit 2.9 to the Annual Report on Form 20-F of
Petrobras and PifCo, filed with the Securities and Exchange Commission on May 19,
2010 (File Nos. 1-15106 and 1-33121)).2.10
    
    Amended and Restated Third Supplemental Indenture, initially dated as of December
10, 2003, as amended and restated as of March 31, 2010, between Petrobras
International Finance Company (PifCo) and JPMorgan Chase Bank, as Trustee, relating
to the 8.375% Global Notes due 2018 (incorporated by reference to Exhibit 2.10 to
the Annual Report on Form 20-F of Petrobras and Petrobras International Finance
Company, filed with the Securities and Exchange Commission on May 19, 2010 (File
Nos. 1-15106 and 1-33121)).2.11
    
    Indenture, dated as of July 6, 2001, between Petrobras International Finance
Company and The Bank of New York Mellon, as
 3




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No.
    
    DescriptionTrustee, relating to the 9 3/4% Senior
Notes due 2011 (incorporated by reference to Exhibit 4.1 to the Registration
Statement of Petrobras International Finance Company and Petróleo Brasileiro S.A.
Petrobras on Form F-4, filed with the Securities and Exchange Commission on
December 6, 2001 (File No. 333-14170)).2.12
    
    Amended and Restated Fourth Supplemental Indenture, initially dated as of September
15, 2004, as amended and restated as of March 31, 2010, between Petrobras
International Finance Company (PifCo) and JPMorgan Chase Bank, as Trustee, and
Petróleo Brasileiro S.A. Petrobras relating to the 7.75% Global Notes due 2014
(incorporated by reference to Exhibit 2.12 to the Annual Report on Form 20-F of
Petrobras and PifCo, filed with the Securities and Exchange Commission on May 19,
2010 (File Nos. 1-15106 and 1-33121)).2.13
    
    Registration Rights Agreement, dated as of July 6, 2001, among Petrobras
International Finance Company, Petróleo Brasileiro S.A. Petrobras, and USB
Warburg LLC, Banc of America Securities LLC, J.P. Morgan Securities Inc., RBC
Dominion Securities Corporation and Santander Central Hispano Investment Securities
Inc. (incorporated by reference to Exhibit 4.4 to the Registration Statement of
Petrobras International Finance Company and Petróleo Brasileiro S.A. Petrobras on
Form F-4, filed with the Securities and Exchange Commission on December 6, 2001
(File No. 333-14170)).2.14
    
    Amended and Restated Fifth Supplemental Indenture, initially dated as of October 6,
2006, as amended and restated as of February 7, 2007, as amended and restated as of
March 31, 2010, between Petrobras International Finance Company (PifCo) and the
Bank of New York Mellon, as successor to JPMorgan Chase Bank, N.A., as Trustee, and
Petróleo Brasileiro S.A. Petrobras relating to the 6.125% Global Notes due 2016
(incorporated by reference to Exhibit 2.14 to the Annual Report on Form 20-F of
Petrobras and PifCo, filed with the Securities and Exchange Commission on May 19,
2010 (File Nos. 1-15106 and 1-33121)).2.15
    
    Amended and Restated First Supplemental Indenture, initially dated as of November
1, 2007, as amended and restated as of January 11, 2008, as amended and restated as
of March 31, 2010, between Petrobras International Finance Company (PifCo) and The
Bank of New York Mellon, as Trustee, and Petróleo Brasileiro S.A. Petrobras
relating to the 5.875% Global Notes due 2018 (incorporated by reference to Exhibit
2.15 to the Annual Report on Form 20-F of Petrobras and PifCo, filed with the
Securities and Exchange Commission on May 19, 2010 (File Nos. 1-15106 and
1-33121)).2.16
    
    Guaranty for the 9.750% Senior Notes due 2011, dated as of March 31, 2010, between
Petróleo Brasileiro S.A. Petrobras and The Bank of New York Mellon, as Trustee
(incorporated by reference to Exhibit 2.16 to the Annual Report on Form 20-F of
Petrobras and Petrobras International Finance Company, filed with the Securities
and Exchange Commission on May 19, 2010 (File Nos. 1-15106 and
1-33121)).2.17
    
    Guaranty for the 9.125% Global Notes due 2013, dated as of March 31, 2010, between
Petróleo Brasileiro S.A. Petrobras and The Bank of New York Mellon, as Trustee
(incorporated by reference to Exhibit 2.17 to the Annual Report on Form 20-F of
Petrobras and Petrobras International Finance Company, filed with the Securities
and Exchange Commission on May 19, 2010 (File Nos. 1-15106 and
1-33121)).2.18
    
    Guaranty for the 8.375% Global Notes due 2018, dated as of March 31, 2010, between
Petróleo Brasileiro S.A. Petrobras and The Bank of New York Mellon, as Trustee
(incorporated by reference to Exhibit 2.18 to the Annual Report on Form 20-F of
Petrobras and Petrobras International Finance Company, filed with the Securities
and Exchange Commission on May 19, 2010 (File Nos. 1-15106 and
1-33121)).2.19
    
    Master Export Contract, dated as of December 21, 2001, between Petróleo Brasileiro
S.A. Petrobras and Petrobras Finance Ltd. (incorporated by reference to Exhibit
2.14 to the Annual Report on Form 20-F of Petrobras International Finance Company,
filed with the Securities and Exchange Commission on July 1, 2002, and amendments
to which were filed on December 13, 2002 and March 20, 2003 (File No. 333-14168)).2.20
    
    Amendment to the Master Export Contract, dated as of May 21, 2003, among Petróleo
Brasileiro S.A. Petrobras and Petrobras Finance Ltd. (incorporated by reference
to Exhibit 2.18 to the Annual Report on Form 20-F of Petrobras International
Finance Company, filed with the Securities and Exchange Commission on June 19, 2003
(File No. 333-14168)).2.21
    
    Depositary Agreement, dated as of December 21, 2001, among U.S. Bank, National
Association, Cayman Islands Branch, in capacity as Trustee of the PF Export
Receivables Master Trust, Citibank, N.A., in capacity as Securities Intermediary,
and Petrobras Finance Ltd. (incorporated by reference to Exhibit 2.15 to the Annual
Report on Form 20-F of Petrobras International Finance Company, filed with the
Securities and Exchange Commission on July 1, 2002, and amendments to which were
filed on December 13, 2002 and March 20, 2003 (File No. 333-14168)).2.22
    
    Letter Agreement relating to the Depositary Agreement, dated as of May 16, 2003
(incorporated by reference to Exhibit 2.20 to the Annual Report on Form 20-F of
Petrobras International Finance Company, filed with the Securities and Exchange
Commission on June 19, 2003 (File No. 333-14168)).2.23
    
    Administrative Services Agreement, dated as of December 21, 2001, between Petróleo
Brasileiro S.A. Petrobras, as Delivery and Sales Agent, and Petrobras Finance
Ltd. (incorporated by reference to Exhibit 2.16 to the Annual Report on Form 20-F
of Petrobras International Finance Company, filed with the Securities and Exchange
Commission on July 1, 2002, and amendments to which were filed on December 13, 2002
and March 20, 2003 (File No. 333-14168)).2.24
    
    Letter Agreement relating to the Administrative Services Agreement, dated as of May
16, 2003 (incorporated by reference to Exhibit 2.22 to the Annual Report on Form
20-F of Petrobras International Finance Company, filed with the Securities and
 4




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No.
    
    DescriptionExchange Commission on June 19, 2003 (File No. 333-14168)).2.25
    
    Amended and Restated Trust Deed, dated as of December 21, 2001, among U.S. Bank,
National Association, Cayman Islands Branch, in capacity as Trustee of the PF
Export Receivables Master Trust, Citibank, N.A., in capacity as Paying Agent,
Transfer Agent, Registrar and Depositary Bank, and Petrobras International Finance
Company, as Servicer (incorporated by reference to Exhibit 2.17 to the Annual
Report on Form 20-F of Petrobras International Finance Company, filed with the
Securities and Exchange Commission on July 1, 2002, and amendments to which were
filed on December 13, 2002 and March 20, 2003 (File No. 333-14168)).2.26
    
    Receivables Purchase Agreement, dated as of December 21, 2001, among Petrobras
Finance Ltd., Petróleo Brasileiro S.A. Petrobras and U.S. Bank, National
Association, Cayman Islands Branch, solely in capacity as Trustee of the PF Export
Receivables Master Trust (incorporated by reference to Exhibit 2.18 to the Annual
Report on Form 20-F of Petrobras International Finance Company, filed with the
Securities and Exchange Commission on July 1, 2002, and amendments to which were
filed on December 13, 2002 and March 20, 2003 (File No. 333-14168)).2.27
    
    Amended and Restated Receivables Purchase Agreement, dated as of May 21, 2003,
among Petrobras Finance Ltd., Petróleo Brasileiro S.A. Petrobras and U.S. Bank,
National Association, Cayman Islands Branch, solely in capacity as Trustee of the
PF Export Receivables Master Trust (incorporated by reference to Exhibit 2.25 to
the Annual Report on Form 20-F of Petrobras International Finance Company, filed
with the Securities and Exchange Commission on June 19, 2003 (File No. 333-14168)).2.28
    
    Prepayment Agreement, dated as of December 21, 2001, between Petróleo Brasileiro
S.A. Petrobras and Petrobras Finance Ltd. (incorporated by reference to Exhibit
2.26 to the Annual Report on Form 20-F of Petrobras International Finance Company,
filed with the Securities and Exchange Commission on June 19, 2003 (File No.
333-14168)).2.29
    
    Amended and Restated Prepayment Agreement, dated as of May 2, 2003, between
Petróleo Brasileiro S.A. Petrobras and Petrobras Finance Ltd. (incorporated by
reference to Exhibit 2.27 to the Annual Report on Form 20-F of Petrobras
International Finance Company, filed with the Securities and Exchange Commission on
June 19, 2003 (File No. 333-14168)).2.30
    
    Guaranty for the 7.75% Global Notes due 2014, dated as of March 31, 2010, between
Petróleo Brasileiro S.A. Petrobras and The Bank of New York Mellon, as Trustee
(incorporated by reference to Exhibit 2.30 to the Annual Report on Form 20-F of
Petrobras and Petrobras International Finance Company, filed with the Securities
and Exchange Commission on May 19, 2010 (File Nos. 1-15106 and
1-33121)).2.31
    
    Guaranty for the 6.125% Global Notes due 2016, dated as of March 31, 2010, between
Petróleo Brasileiro S.A. Petrobras and The Bank of New York Mellon, as Trustee
(incorporated by reference to Exhibit 2.31 to the Annual Report on Form 20-F of
Petrobras and Petrobras International Finance Company, filed with the Securities
and Exchange Commission on May 19, 2010 (File Nos. 1-15106 and
1-33121)).2.32
    
    Guaranty for the 5.875% Global Notes due 2018, dated as of March 31, 2010, between
Petróleo Brasileiro S.A. Petrobras and The Bank of New York Mellon, as Trustee
(incorporated by reference to Exhibit 2.32 to the Annual Report on Form 20-F of
Petrobras and Petrobras International Finance Company, filed with the Securities
and Exchange Commission on May 19, 2010 (File Nos. 1-15106 and
1-33121)).2.33
    
    Amended and Restated Second Supplemental Indenture, initially dated as of February
11,2009, as amended and restated as of July 9, 2009, between Petrobras
International Finance Company (PifCo) and the Bank of New York Mellon, as Trustee,
and Petróleo Brasileiro S.A. Petrobras relating to the 7.875% Global Notes due
2019 (incorporated by reference to Exhibit 2.33 to the Annual Report on Form 20-F
of Petrobras and PifCo, filed with the Securities and Exchange Commission on May
19, 2010 (File Nos. 1-15106 and 1-33121)).2.34
    
    Amended and Restated Guaranty, initially dated as of February 11, 2009, as amended
and restated as of July 9, 2009, between Petróleo Brasileiro S.A. Petrobras and
The Bank of New York Mellon, as Trustee (incorporated by reference to Exhibit 2.34
to the Annual Report on Form 20-F of Petrobras and Petrobras International Finance
Company, filed with the Securities and Exchange Commission on May 19, 2010 (File
Nos. 1-15106 and 1-33121)).2.35
    
    Third Supplemental Indenture, dated as of October 30, 2009, between Petrobras
International Finance Company (PifCo) and The Bank of New York Mellon, as Trustee,
and Petróleo Brasileiro S.A. Petrobras relating to the 5.75% Global Notes due
2020 (incorporated by reference to Exhibit 2.35 to the Annual Report on Form 20-F
of Petrobras and PifCo, filed with the Securities and Exchange Commission on May
19, 2010 (File Nos. 1-15106 and 1-33121)).2.36
    
    Fourth Supplemental Indenture, dated as of October 30, 2009, between Petrobras
International Finance Company (PifCo) and The Bank of New York Mellon, as Trustee,
and Petróleo Brasileiro S.A. Petrobras relating to the 6.875% Global Notes due
2040 (incorporated by reference to Exhibit 2.36 to the Annual Report on Form 20-F
of Petrobras and Petrobras International Finance Company, filed with the Securities
and Exchange Commission on May 19, 2010 (File Nos. 1-15106 and
1-33121)).2.37
    
    Guaranty for the 5.75% Global Notes due 2020, dated as of October 30, 2009, between
Petróleo Brasileiro S.A. Petrobras and The Bank of New York Mellon, as Trustee
(incorporated by reference to Exhibit 2.37 to the Annual Report on Form 20-F of
Petrobras and Petrobras International Finance Company, filed with the Securities
and Exchange Commission on May 19, 2010 (File Nos. 1-15106 and
1-33121)).
 5




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No.
    
    Description2.38
    
    Guaranty for the 6.975% Global Notes due 2040, dated as of October 30, 2009,
between Petróleo Brasileiro S.A. Petrobras and The Bank of New York Mellon, as
Trustee (incorporated by reference to Exhibit 2.38 to the Annual Report on Form
20-F of Petrobras and Petrobras International Finance Company, filed with the
Securities and Exchange Commission on May 19, 2010 (File Nos. 1-15106 and
1-33121)).The amount of long-term debt securities of Petrobras authorized under any given
instrument does not exceed 10% of its total assets on a consolidated basis.
Petrobras hereby agrees to furnish to the SEC, upon its request, a copy of any
instrument defining the rights of holders of its long-term debt or of its
subsidiaries for which consolidated or unconsolidated financial statements are
required to be filed.4.1
    
    Form of Concession Agreement for Exploration, Development and Production of crude
oil and natural gas executed between Petrobras and ANP (incorporated by reference
to Exhibit 10.1 of Petrobras Registration Statement on Form F-1 filed with the
Securities and Exchange Commission on July 14, 2000 (File No. 333-12298)).4.2
    
    Purchase and Sale Agreement of natural gas, executed between Petrobras and
Yacimientos Petrolíferos Fiscales Bolivianos-YPFB (together with and English
version) (incorporated by reference to Exhibit 10.2 to Petrobras Registration
Statement on Form F-1 filed with the Securities and Exchange Commission on July 14,
2000 (File No. 333-12298)).8.1
    
    List of subsidiaries (incorporated by reference to Exhibit 8.1 to the Annual Report
on Form 20-F of Petrobras and Petrobras International Finance Company, filed with
the Securities and Exchange Commission on May 19, 2010 (File Nos. 1-15106 and
1-33121)).12.1
    
    Petrobras Certifications Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.12.2
    
    PifCos Certifications Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.13.1
    
    Petrobras Certifications Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.13.2
    
    PifCos Certifications Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.15.1
    
    Consent letter of KPMG (incorporated by reference to Exhibit 15.1 to the Annual
Report on Form 20-F of Petrobras and Petrobras International Finance Company, filed
with the Securities and Exchange Commission on May 19, 2010 (File Nos. 1-15106 and
1-33121)).15.2
    
    Consent letter of KPMG (incorporated by reference to Exhibit 15.2 to the Annual
Report on Form 20-F of Petrobras and Petrobras International Finance Company, filed
with the Securities and Exchange Commission on May 19, 2010 (File Nos. 1-15106 and
1-33121)).15.3
    
    Consent letter of DeGolyer and MacNaughton (incorporated by reference to Exhibit
15.3 to the Annual Report on Form 20-F of Petrobras and Petrobras International
Finance Company, filed with the Securities and Exchange Commission on May 19, 2010
(File Nos. 1-15106 and 1-33121)).99.1
    
    Third-Party Reports of DeGolyer and MacNaughton.
 6




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SIGNATURES
  Petróleo Brasileiro S.A.PETROBRASBy:
    /s/ José Sergio Gabrielli de AzevedoName:
    José Sergio Gabrielli de AzevedoTitle:
    Chief Executive OfficerBy:
    /s/ Almir Guilherme BarbassaName:
    Almir Guilherme BarbassaTitle:
    Chief Financial Officer and Chief Investor Relations Officer 7




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SIGNATURES
  Petrobras International Finance CompanyPifCoBy:
    /s/ Daniel Lima de OliveiraName:
    Daniel Lima de OliveiraTitle:
    Chairman and Chief Executive OfficerBy:
    /s/ Sérvio Túlio da Rosa TinocoName:
    Sérvio Túlio da Rosa TinocoTitle:
    Chief Financial Officer 8